#Script Module : VMware.Hv.Helper
#Version       : 1.3.1

#Copyright © 2016 VMware, Inc. All Rights Reserved.

#Permission is hereby granted, free of charge, to any person obtaining a copy of
#this software and associated documentation files (the "Software"), to deal in
#the Software without restriction, including without limitation the rights to
#use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
#of the Software, and to permit persons to whom the Software is furnished to do
#so, subject to the following conditions:

#The above copyright notice and this permission notice shall be included in all
#copies or substantial portions of the Software.

#THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
#IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
#FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
#AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
#LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
#OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
#SOFTWARE.

function Get-HVObject {
  param(
    [Parameter(Mandatory = $true)]
    [string]$TypeName,

    [Parameter(Mandatory = $false)]
    [System.Collections.Hashtable]$PropertyName
  )
  $objStr = 'VMware.Hv.' + $typeName
  return New-Object $objStr -Property $propertyName
}

function Get-ViewAPIService {
  param(
    [Parameter(Mandatory = $false)]
    $HvServer
  )
  if ($null -ne $hvServer) {
    if ($hvServer.GetType().name -ne 'ViewServerImpl') {
      $type = $hvServer.GetType().name
      Write-Error "Expected hvServer type is ViewServerImpl, but received: [$type]"
      return $null
    }
    elseif ($hvServer.IsConnected) {
      return $hvServer.ExtensionData
    }
  } elseif ($global:DefaultHVServers.Length -gt 0) {
     $hvServer = $global:DefaultHVServers[0]
     return $hvServer.ExtensionData
  }
  return $null
}

function Get-HVModuleVersion {
  if (-not (Get-Module -Name "Vmware.VimAutomation.HorizonView" -ErrorAction "SilentlyContinue") ) {
    Import-Module -Name "Vmware.VimAutomation.HorizonView" -ErrorAction Stop
  }
  $hvModules = @( Get-Module -Name "Vmware.VimAutomation.HorizonView" -ErrorAction SilentlyContinue);
  return $($hvModules.version | measure -Maximum).Maximum
}

function Get-HVBaseImageVmList {
  param(
    [Parameter(Mandatory = $true)]
    $vcID
  )
  $BaseImage_service_helper = New-Object VMware.Hv.BaseImageVmService
  if ((Get-HVModuleVersion) -lt [version] "12.2") {
    return $BaseImage_service_helper.BaseImageVm_List($services, $vcID)
  } else {
    return $BaseImage_service_helper.BaseImageVm_List($services, $vcID, $null)
  }
}

function Get-HVConfirmFlag {
  Param(
    [Parameter(Mandatory = $true)]
    $keys
  )
  if (($keys -contains 'Confirm') -or ($keys -contains 'WhatIf')) {
    return $true
  }
  return $false
}

function Get-VcenterID {
  param(
    [Parameter(Mandatory = $true)]
    $Services,

    [Parameter(Mandatory = $false)]
    [string]
    $Vcenter
  )
  $vc_service_helper = New-Object VMware.Hv.VirtualCenterService
  $vcList = $vc_service_helper.VirtualCenter_List($services)
  if ($vCenter) {
    #ServerSpec.ServerName is IP/FQDN of the vCenter server. Input vCenter will be IP/FQDN of the vcenter server
    $virtualCenterId = ($vcList | Where-Object { $_.ServerSpec.ServerName -eq $vCenter }).id
    if ($virtualCenterId.Count -ne 1) {
      Write-Error "vCenter Server not found: [$vCenter], please make sure vCenter is added in Connection Server"
      return $null
    }
  }
  else {
    if ($vcList.Count -ne 1) {
      Write-Error "Multiple Vcenter servers found, please specify the vCenter Name"
      return $null
    }
    else { $virtualCenterId = $vcList.id }
  }
  return $virtualCenterId
}

function Get-HVvCenterServer {
  <#
  .Synopsis
    Gets a list of all configured vCenter Servers

  .DESCRIPTION
    Queries and returns the vCenter Servers configured for the pod of the specified HVServer.

  .PARAMETER HvServer
    Reference to Horizon View Server to query the virtual machines from. If the value is not passed or null then
    first element from global:DefaultHVServers would be considered inplace of hvServer

  .PARAMETER Name
    A string value to query a vCenter Server by Name, if it is known.

  .EXAMPLE
    Get-HVvCenterServer

  .EXAMPLE
    Get-HVvCenterServer -Name 'vCenter1'

  .OUTPUTS
    Returns array of object type VMware.Hv.VirtualCenterInfo

  .NOTES
      Author                      : Matt Frey.
      Author email                : mfrey@vmware.com
      Version                     : 1.0

      ===Tested Against Environment====
      Horizon View Server Version : 7.7
      PowerCLI Version            : PowerCLI 11.2.0
      PowerShell Version          : 5.1
  #>

  param(
    [Parameter(Mandatory = $false)]
    $HvServer = $null,

    [Parameter(Mandatory = $false)]
    [string]$Name = $null
  )

  begin {
    $services = Get-ViewAPIService -hvServer $hvServer

    if ($null -eq $services) {
      Write-Error "Could not retrieve ViewApi services from connection object"
      break
    }
  }

  process {

    if ($null -ne $PSBoundParameters.Name) {
      $vCenterList = $services.VirtualCenter.VirtualCenter_List() | Where-Object {$_.ServerSpec.ServerName -eq $Name}
    } else {
      $vCenterList = $services.VirtualCenter.VirtualCenter_List()
    }

  }

  end {

    return $vCenterList

  }
}

function Get-HVvCenterServerHealth {
  <#
  .Synopsis
    Gets a the health info for a given vCenter Server.

  .DESCRIPTION
    Queries and returns the VirtualCenterHealthInfo specified HVServer.

  .PARAMETER HvServer
    Reference to Horizon View Server to query the virtual machines from. If the value is not passed or null then
    first element from global:DefaultHVServers would be considered inplace of hvServer

  .PARAMETER VirtualCenter
    A parameter to specify which vCenter Server to check health for. If not specified, this function will return the
    health info for all vCenter Servers.

  .EXAMPLE
    Get-HVvCenterServerHealth -VirtualCenter 'vCenter1'

  .EXAMPLE
    Get-HVvCenterServerHealth -VirtualCenter $vCenter1

  .EXAMPLE
    Get-HVvCenterServerHealth

  .OUTPUTS
    Returns array of object type VMware.Hv.VirtualCenterInfo

  .NOTES
      Author                      : Matt Frey.
      Author email                : mfrey@vmware.com
      Version                     : 1.0

      ===Tested Against Environment====
      Horizon View Server Version : 7.7
      PowerCLI Version            : PowerCLI 11.2.0
      PowerShell Version          : 5.1
  #>

  param(
    [Parameter(Mandatory = $false)]
    $HvServer = $null,

    [Parameter(Mandatory = $false)]
    $VirtualCenter = $null
  )

  begin {
    $services = Get-ViewAPIService -hvServer $hvServer

    Write-Warning "Get-HvVcenterServerHealth is targeted for deprecation in a future release. Use Get-HVHealth -Servicename VirtualCenter instead."

    if ($null -eq $services) {
      Write-Error "Could not retrieve ViewApi services from connection object"
      break
    }
  }

  process {

    if ($null -eq $PSBoundParameters.VirtualCenter) {
      $VirtualCenterHealth = $services.VirtualCenterHealth.VirtualCenterHealth_List()
    } else {
      $objType = $VirtualCenter.getType() | Select-Object -ExpandProperty Name
      Switch ($objType) {
        'String' {
          $VirtualCenterHealth = $services.VirtualCenterHealth.VirtualCenterHealth_Get($(Get-HVvCenterServer -Name $VirtualCenter | Select-Object -ExpandProperty Id))
        }
        'VirtualCenterInfo' {
          $VirtualCenterHealth = $services.VirtualCenterHealth.VirtualCenterHealth_Get($($VirtualCenter | Select-Object -ExpandProperty Id))
        }
        'VirtualCenterId' {
          $VirtualCenterHealth = $services.VirtualCenterHealth.VirtualCenterHealth_Get($VirtualCenter)
        }
      }
    }

  }

  end {

    return $VirtualCenterHealth

  }
}

function Get-JsonObject {
  param(
    [Parameter(Mandatory = $true)]
    [string]$SpecFile
  )
  try {
    return Get-Content -Raw $specFile | ConvertFrom-Json
  } catch {
    throw "Failed to read json file [$specFile], $_"
  }
}

function Get-MapEntry {
  param(
    [Parameter(Mandatory = $true)]
    $Key,

    [Parameter(Mandatory = $true)]
    $Value
  )

  $update = New-Object VMware.Hv.MapEntry
  $update.key = $key
  $update.value = $value
  return $update
}

function Get-RegisteredPhysicalMachine ($Services,$MachinesList) {
  [VMware.Hv.MachineId[]]$machines = $null
  $query_service_helper = New-Object VMware.Hv.QueryServiceService
  foreach ($machineName in $machinesList) {
    $QueryFilterEquals = New-Object VMware.Hv.QueryFilterEquals
    $QueryFilterEquals.memberName = 'machineBase.name'
    $QueryFilterEquals.value = $machineName

    $defn = New-Object VMware.Hv.QueryDefinition
    $defn.queryEntityType = 'RegisteredPhysicalMachineInfo'
    $defn.Filter = $QueryFilterEquals

    $queryResults = $query_service_helper.QueryService_Query($services,$defn)
    $res = $queryResults.results
    $machines += $res.id
  }
  return $machines
}

function Get-RegisteredRDSServer ($Services,$ServerList) {
  [VMware.Hv.RDSServerId[]]$servers = $null
  $query_service_helper = New-Object VMware.Hv.QueryServiceService
  foreach ($serverName in $serverList) {
    $QueryFilterEquals = New-Object VMware.Hv.QueryFilterEquals
    $QueryFilterEquals.memberName = 'base.name'
    $QueryFilterEquals.value = $serverName

    $defn = New-Object VMware.Hv.QueryDefinition
    $defn.queryEntityType = 'RDSServerInfo'
    $defn.Filter = $QueryFilterEquals

    $queryResults = $query_service_helper.QueryService_Query($services,$defn)

    $servers += $queryResults.results.id
  }
  if ($null -eq $servers) {
    throw "No Registered RDS server found with name: [$serverList]"
  }
  return $servers
}

function Add-HVDesktop {
<#
.SYNOPSIS
Adds virtual machine to existing pool

.DESCRIPTION
The Add-HVDesktop adds virtual machines to already exiting pools by using view API service object(hvServer) of Connect-HVServer cmdlet. VMs can be added to any of unmanaged manual, managed manual or Specified name. This advanced function do basic checks for pool and view API service connection existance, hvServer object is bound to specific connection server.

.PARAMETER PoolName
    Pool name to which new VMs are to be added.

.PARAMETER Machines
    List of virtual machine names which need to be added to the given pool.

.PARAMETER Users
    List of virtual machine users for given machines.

.PARAMETER Vcenter
    Virtual Center server-address (IP or FQDN) of the given pool. This should be same as provided to the Connection Server while adding the vCenter server.

.PARAMETER HvServer
    View API service object of Connect-HVServer cmdlet.

.EXAMPLE
    Add-HVDesktop -PoolName 'ManualPool' -Machines 'manualPool1', 'manualPool2' -Confirm:$false
    Add managed manual VMs to existing manual pool

.EXAMPLE
    Add-HVDesktop -PoolName 'SpecificNamed' -Machines 'vm-01', 'vm-02' -Users 'user1', 'user2'
    Add virtual machines to automated specific named dedicated pool

.EXAMPLE
    Add-HVDesktop -PoolName 'SpecificNamed' -Machines 'vm-03', 'vm-04'
    Add machines to automated specific named Floating pool

.EXAMPLE
    Add-HVDesktop -PoolName 'Unmanaged' -Machines 'desktop-1.eng.vmware.com'
    Add machines to unmanged manual pool

.NOTES
    Author                      : Praveen Mathamsetty.
    Author email                : pmathamsetty@vmware.com
    Version                     : 1.1
    Dependencies                : Make sure pool already exists before adding VMs to it.

    ===Tested Against Environment====
    Horizon View Server Version : 7.0.2, 7.1.0
    PowerCLI Version            : PowerCLI 6.5, PowerCLI 6.5.1
    PowerShell Version          : 5.0

#>
  [CmdletBinding(
    SupportsShouldProcess = $true,
    ConfirmImpact = 'High'
  )]
  param
  (
    [Parameter(Mandatory = $true)]
    [string]
    $PoolName,

    [Parameter(Mandatory = $true)]
    [string[]]
    $Machines,

    [Parameter(Mandatory = $false)]
    [string[]]
    $Users,

    [Parameter(Mandatory = $false)]
    [string]
    $Vcenter,

    [Parameter(Mandatory = $false)]
    $HvServer = $null
  )

  begin {
    $services = Get-ViewAPIService -hvServer $hvServer
    if ($null -eq $services) {
      Write-Error "Could not retrieve ViewApi services from connection object"
      break
    }
  }

  process {
    $confirmFlag = Get-HVConfirmFlag -keys $PsBoundParameters.Keys
    try {
      $desktopPool = Get-HVPoolSummary -poolName $poolName -hvServer $hvServer
    } catch {
      Write-Error "Make sure Get-HVPoolSummary advanced function is loaded, $_"
      break
    }
    if ($desktopPool) {
      $id = $desktopPool.id
      $type = $desktopPool.desktopsummarydata.type
      $source = $desktopPool.desktopsummarydata.source
      $userAssignment = $desktopPool.desktopsummarydata.userAssignment
    } else {
      Write-Error "Unable to retrieve DesktopSummaryView with given poolName: [$poolName]"
      break
    }

    $desktop_service_helper = New-Object VMware.Hv.DesktopService
    $user_assignement_helper = $desktop_service_helper.getDesktopUserAssignmentHelper()
    switch ($type) {
      'AUTOMATED' {
        if (($userAssignment -eq $user_assignement_helper.USER_ASSIGNMENT_DEDICATED) -and ($machines.Length -ne $users.Length)) {
          Write-Error "Parameters machines length: [$machines.Length] and users length: [$users.Length] should be of same size"
          return
        }
        [VMware.Hv.DesktopSpecifiedName[]]$desktopSpecifiedNameArray = @()
        $cnt = 0
        foreach ($machine in $machines) {
          $specifiedNames = New-Object VMware.Hv.DesktopSpecifiedName
          $specifiedNames.vmName = $machine
          if ($userAssignment -eq $user_assignement_helper.USER_ASSIGNMENT_DEDICATED -and $users) {
            try {
              $specifiedNames.user = Get-UserId -user $users[$cnt]
            } catch {
              Write-Error "Unable to retrieve UserOrGroupId for user: [$users[$cnt]], $_"
              return
            }
          }
          $desktopSpecifiedNameArray += $specifiedNames
          $cnt += 1
        }
        $desktop_service_helper.Desktop_AddMachinesToSpecifiedNamingDesktop($services,$id,$desktopSpecifiedNameArray)
      }
      'MANUAL' {
        if ($source -eq 'UNMANAGED') {
          $machineList = Get-RegisteredPhysicalMachine -services $services -machinesList $machines
          if ($machineList.Length -eq 0) {
            Write-Error "Failed to retrieve registerd physical machines with the given machines parameter"
            return
          }
        } else {
		  $vcId = Get-VcenterID -services $services -vCenter $vCenter
          $machineList = Get-MachinesByVCenter -machineList $machines -vcId $vcId
          if ($machineList.Length -eq 0) {
            Write-Error "Failed to get any Virtual Center machines with the given machines parameter"
            return
          }
        }
        if (!$confirmFlag -OR  $pscmdlet.ShouldProcess($machines)) {
          $desktop_service_helper.Desktop_AddMachinesToManualDesktop($services,$id,$machineList)
        }
        write-host "Successfully added desktop(s) to pool"
      }
      default {
        Write-Error "Only Automated/Manual pool types support this add operation"
        break
      }
    }
  }

  end {
    [System.gc]::collect()
  }
}

function Get-UserId ($User) {

  $defn = New-Object VMware.Hv.QueryDefinition
  $defn.queryEntityType = 'ADUserOrGroupSummaryView'
  $groupfilter = New-Object VMware.Hv.QueryFilterEquals -Property @{ 'memberName' = 'base.group'; 'value' = $false }
  $userNameFilter = New-Object VMware.Hv.QueryFilterEquals -Property @{ 'memberName' = 'base.name'; 'value' = $user }
  $treeList = @()
  $treeList += $userNameFilter
  $treelist += $groupfilter
  $filterAnd = New-Object VMware.Hv.QueryFilterAnd
  $filterAnd.Filters = $treelist
  $defn.Filter = $filterAnd
  $query_service_helper = New-Object VMware.Hv.QueryServiceService
  $res = $query_service_helper.QueryService_Query($services,$defn)
  if ($null -eq $res.results) {
    throw "Query service did not return any users with given user name: [$user]"
  }
  return $res.results.id
}

function Get-MachinesByVCenter ($MachineList,$VcId) {

  [VMware.Hv.MachineId[]]$machines = $null
  $virtualMachine_helper = New-Object VMware.Hv.VirtualMachineService
  $vcMachines = $virtualMachine_helper.VirtualMachine_List($services,$vcId)
  $machineDict = @{}
  foreach ($vMachine in $vcMachines) {
    $machineDict.Add($vMachine.name,$vMachine.id)
  }
  foreach ($machineName in $machineList) {
    if ($machineDict.Contains($machineName)) {
      $machines += $machineDict.$machineName
    }
  }
  return $machines
}

function Add-HVRDSServer {
<#
.SYNOPSIS
    Add RDS Servers to an existing farm.

.DESCRIPTION
    The Add-HVRDSServer adds RDS Servers to already exiting farms by using view API service object(hvServer) of Connect-HVServer cmdlet. We can add RDSServers to manual farm type only. This advanced function do basic checks for farm and view API service connection existance. This hvServer is bound to specific connection server.

.PARAMETER FarmName
    farm name to which new RDSServers are to be added.

.PARAMETER RdsServers
    RDS servers names which need to be added to the given farm. Provide a comma separated list for multiple names.

.PARAMETER HvServer
    View API service object of Connect-HVServer cmdlet.

.EXAMPLE
    Add-HVRDSServer -Farm "manualFarmTest" -RdsServers "vm-for-rds","vm-for-rds-2" -Confirm:$false
    Add RDSServers to manual farm

.OUTPUTS
    None

.NOTES
    Author                      : praveen mathamsetty.
    Author email                : pmathamsetty@vmware.com
    Version                     : 1.1
    Dependencies                : Make sure farm already exists before adding RDSServers to it.

    ===Tested Against Environment====
    Horizon View Server Version : 7.0.2, 7.1.0
    PowerCLI Version            : PowerCLI 6.5, PowerCLI 6.5.1
    PowerShell Version          : 5.0
#>
  [CmdletBinding(
    SupportsShouldProcess = $true,
    ConfirmImpact = 'High'
  )]
  param(
    [Parameter(Mandatory = $true,ValueFromPipeline = $true)]
    $FarmName,

    [Parameter(Mandatory = $true)]
    [string[]]
    $RdsServers,

    [Parameter(Mandatory = $false)]
    $HvServer = $null
  )

  begin {
    $services = Get-ViewAPIService -hvServer $hvServer
    if ($null -eq $services) {
      Write-Error "Could not retrieve ViewApi services from connection object"
      break
    }
  }

  process {
    $confirmFlag = Get-HVConfirmFlag -keys $PsBoundParameters.Keys
    try {
      $farmSpecObj = Get-HVFarmSummary -farmName $farmName -hvServer $hvServer -suppressInfo $true
    } catch {
      Write-Error "Make sure Get-HVFarmSummary advanced function is loaded, $_"
      break
    }
    if ($farmSpecObj) {
      $id = $farmSpecObj.id
      $type = $farmSpecObj.data.type

    } else {
      Write-Error "Unable to retrieve FarmSummaryView with given farmName: [$farmName]"
      break
    }
    $farm_service_helper = New-Object VMware.Hv.FarmService
    switch ($type) {
      'AUTOMATED' {
        Write-Error "Only Manual farm types supported for this add operation"
        break
      }
      'MANUAL' {
        try {
          $serverList = Get-RegisteredRDSServer -services $services -serverList $rdsServers
          if (!$confirmFlag -OR  $pscmdlet.ShouldProcess($rdsServers)) {
            $farm_service_helper.Farm_AddRDSServers($services, $id, $serverList)
          }
          write-host "Successfully added RDS Server(s) to Farm"
        } catch {
          Write-Error "Failed to Add RDS Server to Farm with error: $_"
          break
        }
      }
    }
  }

  end {
    [System.gc]::collect()
  }
}

function Connect-HVEvent {
<#
.SYNOPSIS
   This function is used to connect to the event database configured on Connection Server.

.DESCRIPTION
   This function queries the specified Connection Server for event database configuration and returns the connection object to it. If event database is not configured on specified connection server, it will return null.
   Currently, Horizon 7 is supporting SQL server and Oracle 12c as event database servers. To configure event database, goto 'Event Database Configuration' tab in Horizon admin UI.

.PARAMETER HvServer
   View API service object of Connect-HVServer cmdlet.

.PARAMETER DbUserName
   User name to be used in database connection. If not passed, default database user name on the Connection Server will be used.

.PARAMETER DbPassword
   Password corresponds to 'dbUserName' user.

.EXAMPLE
   Connect-HVEvent -HvServer $hvServer
   Connecting to the database with default username configured on Connection Server $hvServer.

.EXAMPLE
   $hvDbServer = Connect-HVEvent -HvServer $hvServer -DbUserName 'system'
   Connecting to the database configured on Connection Server $hvServer with customised user name 'system'.

.EXAMPLE
   $hvDbServer = Connect-HVEvent -HvServer $hvServer -DbUserName 'system' -DbPassword 'censored'
   Connecting to the database with customised user name and password.

.EXAMPLE
   $password = Read-Host 'Database Password' -AsSecureString
   $hvDbServer = Connect-HVEvent -HvServer $hvServer -DbUserName 'system' -DbPassword $password
   Connecting to the database with customised user name and password, with password being a SecureString.

.OUTPUTS
   Returns a custom object that has database connection as 'dbConnection' property.

.NOTES
    Author                      : Paramesh Oddepally.
    Author email                : poddepally@vmware.com
    Version                     : 1.1

    ===Tested Against Environment====
    Horizon View Server Version : 7.0.2, 7.1.0
    PowerCLI Version            : PowerCLI 6.5, PowerCLI 6.5.1
    PowerShell Version          : 5.0
#>
  [CmdletBinding()]
  param(
    [Parameter(Mandatory = $false)]
    [SecureString]$DbPassword = $null,

    [Parameter(Mandatory = $false)]
    $HvServer = $null,

    [Parameter(Mandatory = $false)]
    [string]$DbUserName = $null
  )

  begin {
    [System.Reflection.Assembly]::LoadWithPartialName("System.Data.OracleClient") | Out-Null
    # Connect to Connection Server and call the View API service
    $services = Get-ViewAPIService -hvServer $hvServer
    if ($null -eq $services) {
      Write-Error "Could not retrieve ViewApi services from connection object"
      break
    }
    $EventDatabaseHelper = New-Object VMware.Hv.EventDatabaseService
    $EventDatabaseInfo = $EventDatabaseHelper.EventDatabase_Get($services)

    # Check whether event database is configured on the connection server
    # If not, return empty
    if (!$EventDatabaseInfo.EventDatabaseSet) {
      Write-Error "Event Database is not configured on Connection Server. To configure Event DB, go to 'Events Configuration' Tab in Horizon Admin UI"
      break
    }

    $dbServer = $EventDatabaseInfo.Database.server
    $dbType = $EventDatabaseInfo.Database.type
    $dbPort = $EventDatabaseInfo.Database.port
    $dbName = $EventDatabaseInfo.Database.name
    if (!$dbUserName) { $dbUserName = $EventDatabaseInfo.Database.userName }
    $dbTablePrefix = $EventDatabaseInfo.Database.tablePrefix

    if (!$dbPassword) { $dbPassword = Read-Host 'Database Password for' $dbUserName@$dbServer -AsSecureString }

    if ($dbType -eq "SQLSERVER") {
      if ($dbPassword.GetType().name -eq 'SecureString') {
        $password = $dbPassword
      } else {
        Write-Error "Unsupported type recieved for dbPassword: [$dbPassword]. dbpassword should SecureString type."
	    break
      }
      $connectionString = "Data Source=$dbServer, $dbPort; Initial Catalog=$dbName;"
      $connection = New-Object System.Data.SqlClient.SqlConnection ($connectionString)
      $password.MakeReadOnly()
      $connection.Credential = New-Object System.Data.SqlClient.SqlCredential($dbUserName, $password);
    } elseif ($dbType -eq "ORACLE") {
      if ($dbPassword.GetType().name -eq 'SecureString'){
        $password = [Runtime.InteropServices.Marshal]::PtrToStringAuto([Runtime.InteropServices.Marshal]::SecureStringToBSTR($dbPassword))
      }  elseif ($dbPassword.GetType().name -eq 'String') {
        $password = $dbPassword
      } else {
        Write-Error "Unsupported type recieved for dbPassword: [$dbPassword]. dbpassword should either be String or SecureString type. "
	    break
      }
      $dataSource = "(DESCRIPTION = " +
      "(ADDRESS = (PROTOCOL = TCP)(HOST = $dbServer)(PORT = $dbPort))" +
      "(CONNECT_DATA =" +
      "(SERVICE_NAME = $dbName))" +
      ");"
      $connectionString = "Data Source=$dataSource;User Id=$dbUserName;Password=$password;"
      $connection = New-Object System.Data.OracleClient.OracleConnection ($connectionString)
    } else {
      Write-Error "Unsupported DB type received: [$dbType]"
      break
    }
  }

  process {
    try {
      $connection.Open()
    } catch {
      Write-Error "Failed to connect to database server: [$dbServer], $_"
      break
    }
    Write-Host "Successfully connected to $dbType database: [$dbServer]"
    return New-Object pscustomobject -Property @{ dbConnection = $connection; dbTablePrefix = $dbTablePrefix; }
  }

  end {
    [System.gc]::collect()
  }
}

function Disconnect-HVEvent {
<#
.SYNOPSIS
   This function is used to disconnect the database connection.

.DESCRIPTION
   This function will disconnect the database connection made earlier during Connect-HVEvent function.

.PARAMETER HvDbServer
   Connection object returned by Connect-HVEvent advanced function. This is a mandatory input.

.EXAMPLE
   Disconnect-HVEvent -HvDbServer $hvDbServer
   Disconnecting the database connection on $hvDbServer.

.OUTPUTS
   None

.NOTES
    Author                      : Paramesh Oddepally.
    Author email                : poddepally@vmware.com
    Version                     : 1.1

    ===Tested Against Environment====
    Horizon View Server Version : 7.0.2, 7.1.0
    PowerCLI Version            : PowerCLI 6.5, PowerCLI 6.5.1
    PowerShell Version          : 5.0
#>

  [CmdletBinding()]
  param(
    [Parameter(Mandatory = $true)]
    [pscustomobject]$HvDbServer
  )

  begin {
    $dbConnection = $hvDbServer.dbConnection

    # Validate the hvDbServer type. If not of expected type, dbConnection will be null.
    if ($null -eq $dbConnection) {
      Write-Error "No valid connection object found on hvDbServer parameter: [$hvDbServer]"
      break
    }

    # validate the user connection type of dbConnection
    if (!$dbConnection.GetType().name.Equals("SqlConnection") -and !$dbConnection.GetType().name.Equals("OracleConnection")) {
      Write-Error "The dbConnection object in hvDbServer parameter is not an SQL/Oracle DB connection: [$hvDbServer.GetType().Name]"
      break
    }
  }

  process {
    $dbConnection.Close()
    Write-Host "Successfully closed the database connection"
  }

  end {
    [System.gc]::collect()
  }
}

function Get-HVEvent {
<#
.SYNOPSIS
   Queries the events from event database configured on Connection Server.

.DESCRIPTION
   This function is used to query the events information from event database. It returns the object that has events in five columns as UserName, Severity, EventTime, Module and Message. EventTime will show the exact time when the event got registered in the database and it follows timezone on database server.
   User can apply different filters on the event columns using the filter parameters userFilter, severityFilter, timeFilter, moduleFilter, messageFilter. Mention that when multiple filters are provided then rows which satisify all the filters will be returned.

.PARAMETER HvDbServer
   Connection object returned by Connect-HVEvent advanced function.

.PARAMETER TimePeriod
   Timeperiod of the events that user is interested in. It can take following four values:
      'day' - Lists last one day events from database
      'week' - Lists last 7 days events from database
      'month' - Lists last 30 days events from database
      'all' - Lists all the events stored in database

.PARAMETER FilterType
   Type of filter action to be applied. The parameters userfilter, severityfilter, timefilter, modulefilter, messagefilter can be used along with this. It can take following values:
      'contains' - Retrieves the events that contains the string specified in filter parameters
      'startsWith' - Retrieves the events that starts with the string specified in filter parameters
      'isExactly' - Retrieves the events that exactly match with the string specified in filter parameters

.PARAMETER UserFilter
   String that can applied in filtering on 'UserName' column.

.PARAMETER SeverityFilter
   String that can applied in filtering on 'Severity' column.

.PARAMETER TimeFilter
   String that can applied in filtering on 'EventTime' column.

.PARAMETER ModuleFilter
   String that can applied in filtering on 'Module' column.

.PARAMETER MessageFilter
   String that can applied in filtering on 'Message' column.

.PARAMETER SqlTimeout
   Data query command timeout in seconds, default is 30 seconds.

.EXAMPLE
   $e = Get-HVEvent -hvDbServer $hvDbServer
   $e.Events
   Querying all the database events on database $hvDbServer.

.EXAMPLE
   $e = Get-HVEvent -HvDbServer $hvDbServer -TimePeriod 'all' -FilterType 'startsWith' -UserFilter 'aduser' -SeverityFilter 'err' -TimeFilter 'HH:MM:SS.fff' -ModuleFilter 'broker' -MessageFilter 'aduser'
   $e.Events | Export-Csv -Path 'myEvents.csv' -NoTypeInformation
   Querying all the database events where user name startswith 'aduser', severity is of 'err' type, having module name as 'broker', message starting with 'aduser' and time starting with 'HH:MM:SS.fff'.
   The resulting events will be exported to a csv file 'myEvents.csv'.

.OUTPUTS
   Returns a custom object that has events information in 'Events' property. Events property will have events information with five columns: UserName, Severity, EventTime, Module and Message.

.NOTES
    Author                      : Paramesh Oddepally.
    Author email                : poddepally@vmware.com
    Version                     : 1.1

    ===Tested Against Environment====
    Horizon View Server Version : 7.0.2, 7.1.0
    PowerCLI Version            : PowerCLI 6.5, PowerCLI 6.5.1
    PowerShell Version          : 5.0
#>

  [CmdletBinding()]
  param(
    [Parameter(Mandatory = $true)]
    [pscustomobject]$HvDbServer,

    [Parameter(Mandatory = $false)]
    [ValidateSet('day','week','month','all')]
    [string]$TimePeriod = 'all',

    [Parameter(Mandatory = $false)]
    [ValidateSet('contains','startsWith','isExactly')]
    [string]$FilterType = 'contains',

    [Parameter(Mandatory = $false)]
    [string]$UserFilter = "",

    [Parameter(Mandatory = $false)]
    [string]$SeverityFilter = "",

    [Parameter(Mandatory = $false)]
    [string]$TimeFilter = "",

    [Parameter(Mandatory = $false)]
    [string]$ModuleFilter = "",

    [Parameter(Mandatory = $false)]
    [string]$MessageFilter = "",

    [Parameter(Mandatory = $false)]
    [int]$SqlTimeout = 30
  )

  begin {
    $dbConnection = $hvDbServer.dbConnection
    $dbTablePrefix = $hvDbServer.dbTablePrefix

    # database table names
    $eventTable = $dbTablePrefix + "event"
    $eventDataTable = $dbTablePrefix + "event_data"

    # Verify the connection type in connectObject type
    $isSqlType = $dbConnection.GetType().name.Equals("SqlConnection")
    $isOracleType = $dbConnection.GetType().name.Equals("OracleConnection")

    if ($isSqlType) {
      $command = New-Object System.Data.Sqlclient.Sqlcommand
      $adapter = New-Object System.Data.SqlClient.SqlDataAdapter
    } elseif ($isOracleType) {
      $command = New-Object System.Data.OracleClient.OracleCommand
      $adapter = New-Object System.Data.OracleClient.OracleDataAdapter
    } else {
      Write-Error "The dbConnection object in hvDbServer parameter is not an SQL/Oracle DB connection:[$dbConnection.GetType().Name] "
      break
    }
  }

  process {
    $command.Connection = $dbConnection

    # Extract the filter parameters and build the filterQuery string
    $filterQuery = ""

    if ($userFilter -ne "") {
      $filterQuery = $filterQuery + " UserSID.StrValue"
      if ($filterType -eq 'contains') { $filterQuery = $filterQuery + " LIKE '%$userFilter%'" }
      elseif ($filterType -eq 'startsWith') { $filterQuery = $filterQuery + " LIKE '$userFilter%'" }
      else { $filterQuery = $filterQuery + " LIKE '$userFilter'" }
    }

    if ($severityFilter -ne "") {
      if ($filterQuery -ne "") { $filterQuery = $filterQuery + " AND" }
      $filterQuery = $filterQuery + " Severity"
      if ($filterType -eq 'contains') { $filterQuery = $filterQuery + " LIKE '%$severityFilter%'" }
      elseif ($filterType -eq 'startsWith') { $filterQuery = $filterQuery + " LIKE '$severityFilter%'" }
      else { $filterQuery = " LIKE '$severityFilter'" }
    }

    if ($moduleFilter -ne "") {
      if ($filterQuery -ne "") { $filterQuery = $filterQuery + " AND" }
      $filterQuery = $filterQuery + " Module"
      if ($filterType -eq 'contains') { $filterQuery = $filterQuery + " LIKE '%$moduleFilter%'" }
      elseif ($filterType -eq 'startsWith') { $filterQuery = $filterQuery + " LIKE '$moduleFilter%'" }
      else { $filterQuery = " LIKE '$moduleFilter'" }
    }

    if ($messageFilter -ne "") {
      if ($filterQuery -ne "") { $filterQuery = $filterQuery + " AND" }
      $filterQuery = $filterQuery + " ModuleAndEventText"
      if ($filterType -eq 'contains') { $filterQuery = $filterQuery + " LIKE '%$messageFilter%'" }
      elseif ($filterType -eq 'startsWith') { $filterQuery = $filterQuery + " LIKE '$messageFilter%'" }
      else { $filterQuery = " LIKE '$messageFilter'" }
    }

    if ($timeFilter -ne "") {
      if ($filterQuery -ne "") { $filterQuery = $filterQuery + " AND" }

      if ($isSqlType) { $filterQuery = $filterQuery + " FORMAT(Time, 'MM/dd/yyyy HH:mm:ss.fff')" }
      else { $timePeriodQuery = $filterQuery = $filterQuery + " TO_CHAR(Time, 'MM/DD/YYYY HH24:MI:SS.FF3')" }

      if ($filterType -eq 'contains') { $filterQuery = $filterQuery + " LIKE '%$timeFilter%'" }
      elseif ($filterType -eq 'startsWith') { $filterQuery = $filterQuery + " LIKE '$timeFilter%'" }
      else { $filterQuery = " LIKE '$timeFilter'" }
    }


    # Calculate the Timeperiod and build the timePeriodQuery string
    # It queries the current time from database server and calculates the time range
    if ($timePeriod -eq 'day') {
      $timeInDays = 1
    } elseif ($timePeriod -eq 'week') {
      $timeInDays = 7
    } elseif ($timePeriod -eq 'month') {
      $timeInDays = 30
    } else {
      $timeInDays = 0
    }

    if ($isSqlType) {
      $query = "SELECT CURRENT_TIMESTAMP"
    } else {
      $query = "SELECT CURRENT_TIMESTAMP from dual"
    }

    $command.CommandText = $query
    $adapter.SelectCommand = $command
    $DataTable = New-Object System.Data.DataTable
    $adapter.Fill($DataTable) | Out-Null

    $toDate = $DataTable.Rows[0][0]
    $fromDate = $toDate.AddDays(- ($timeInDays))

    if ($timePeriod -eq 'all') {
      if ($isSqlType) { $timePeriodQuery = " FORMAT(Time, 'MM/dd/yyyy HH:mm:ss.fff') < '" + $toDate + "'" }
      else { $timePeriodQuery = " TO_CHAR(Time, 'MM/DD/YYYY HH24:MI:SS.FF3') < '" + $toDate + "'" }
    } else {
      if ($isSqlType) { $timePeriodQuery = " FORMAT(Time, 'MM/dd/yyyy HH:mm:ss.fff')   BETWEEN '" + $fromDate + "' AND  '" + $toDate + "'" }
      else { $timePeriodQuery = " TO_CHAR(Time, 'MM/DD/YYYY HH24:MI:SS.FF3') BETWEEN '" + $fromDate + "' AND  '" + $toDate + "'" }
    }


    # Build the Query string based on the database type and filter parameters
    if ($isSqlType) {
      $query = "SELECT  UserSID.StrValue AS UserName, Severity, FORMAT(Time, 'MM/dd/yyyy HH:mm:ss.fff') as EventTime, Module, ModuleAndEventText AS Message FROM $eventTable " +
      " LEFT OUTER JOIN (SELECT EventID, StrValue FROM $eventDataTable WITH (NOLOCK)  WHERE (Name = 'UserDisplayName')) UserSID ON $eventTable.EventID = UserSID.EventID "
      $query = $query + " WHERE $timePeriodQuery"
      if ($filterQuery -ne "") { $query = $query + " AND $filterQuery" }
      $query = $query + " ORDER BY EventTime DESC"
    } else {
      $query = " SELECT UserSID.StrValue AS UserName, Severity, TO_CHAR(Time, 'MM/DD/YYYY HH24:MI:SS.FF3') AS EventTime, Module, ModuleAndEventText AS Message FROM $eventTable " +
      " LEFT OUTER JOIN (SELECT EventID, StrValue FROM $eventDataTable WHERE (Name = 'UserDisplayName')) UserSID ON $eventTable.EventID = UserSID.EventID"
      $query = $query + " WHERE $timePeriodQuery"
      if ($filterQuery -ne "") { $query = $query + " AND $filterQuery" }
      $query = $query + " ORDER BY EventTime DESC"
    }

    $command.CommandText = $query
    $adapter.SelectCommand = $command

    $DataTable = New-Object System.Data.DataTable
    $adapter.SelectCommand.CommandTimeout = $SqlTimeout
    $adapter.Fill($DataTable) | Out-Null

    Write-Host "Number of records found : " $DataTable.Rows.Count

    <#
     # This code allows the events to get printed on console
      Write-Host " User     Time     Severity     Module     ModuleAndEventText "
      Foreach($row in $DataTable.Rows) {
        Write-Host $row[0]  "   "  $row[1]  " "  $row[2]  " "  $row[3]  " "  $row[4]  " "
      }#>
    return New-Object pscustomobject -Property @{ Events = $DataTable; }
  }

  end {
    [System.gc]::collect()
  }
}

function Get-HVFarm {
<#
.SYNOPSIS
    This function is used to find farms based on the search criteria provided by the user.

.DESCRIPTION
    This function queries the specified Connection Server for farms which are configured on the server. If no farm is configured on the specified connection server or no farm matches the given search criteria, it will return null.

.PARAMETER FarmName
    farmName to be searched

.PARAMETER FarmDisplayName
    farmDisplayName to be searched

.PARAMETER FarmType
    farmType to be searched. It can take following values:
    "AUTOMATED"	- search for automated farms only
    'MANUAL' - search for manual farms only

.PARAMETER Enabled
    search for farms which are enabled

.PARAMETER SuppressInfo
    Suppress text info, when no farm found with given search parameters

.PARAMETER HvServer
    Reference to Horizon View Server to query the data from. If the value is not passed or null then first element from global:DefaultHVServers would be considered in-place of hvServer.

.EXAMPLE
     Get-HVFarm -FarmName 'Farm-01'
     Queries and returns farmInfo based on given parameter farmName

.EXAMPLE
     Get-HVFarm -FarmName 'Farm-01' -FarmDisplayName 'Sales RDS Farm'
     Queries and returns farmInfo based on given parameters farmName, farmDisplayName

.EXAMPLE
     Get-HVFarm -FarmName 'Farm-01' -FarmType 'MANUAL'
     Queries and returns farmInfo based on given parameters farmName, farmType

.EXAMPLE
     Get-HVFarm -FarmName 'Farm-01' -FarmType 'MANUAL' -Enabled $true
     Queries and returns farmInfo based on given parameters farmName, FarmType etc

.EXAMPLE
     Get-HVFarm -FarmName 'Farm-0*'
     Queries and returns farmInfo based on parameter farmName with wild character *

.OUTPUTs
    Returns the list of FarmInfo object matching the query criteria.

.NOTES
    Author                      : praveen mathamsetty.
    Author email                : pmathamsetty@vmware.com
    Version                     : 1.1

    ===Tested Against Environment====
    Horizon View Server Version : 7.0.2, 7.1.0
    PowerCLI Version            : PowerCLI 6.5, PowerCLI 6.5.1
    PowerShell Version          : 5.0
#>

  [CmdletBinding()]

  param(
    [Parameter(Mandatory = $false)]
    [string]
    $FarmName,

    [Parameter(Mandatory = $false)]
    [string]
    $FarmDisplayName,

    [Parameter(Mandatory = $false)]
    [ValidateSet('MANUAL','AUTOMATED')]
    [string]
    $FarmType,

    [Parameter(Mandatory = $false)]
    [boolean]
    $Enabled,

	[Parameter(Mandatory = $false)]
    [boolean]
    $SuppressInfo = $false,

    [Parameter(Mandatory = $false)]
    $HvServer = $null
  )

  $services = Get-ViewAPIService -hvServer $hvServer
  if ($null -eq $services) {
    Write-Error "Could not retrieve ViewApi services from connection object"
    break
  }
  $farmList = Find-HVFarm -Param $PSBoundParameters
  if (! $farmList) {
    if (! $SuppressInfo) {
      Write-Host "Get-HVFarm: No Farm Found with given search parameters"
	  }
  }
  $farm_service_helper = New-Object VMware.Hv.FarmService
  $queryResults = @()
  foreach ($id in $farmList.id) {
    $info = $farm_service_helper.Farm_Get($services,$id)
    $queryResults += $info
  }
  $farmList = $queryResults
  return $farmList
}

function Get-HVFarmSummary {
<#
.SYNOPSIS
    This function is used to find farms based on the search criteria provided by the user.

.DESCRIPTION
    This function queries the specified Connection Server for farms which are configured on the server. If no farm is configured on the specified connection server or no farm matches the given search criteria, it will return null.

.PARAMETER FarmName
    FarmName to be searched

.PARAMETER FarmDisplayName
    FarmDisplayName to be searched

.PARAMETER FarmType
    FarmType to be searched. It can take following values:
    "AUTOMATED"	- search for automated farms only
    'MANUAL' - search for manual farms only

.PARAMETER Enabled
    Search for farms which are enabled

.PARAMETER SuppressInfo
    Suppress text info, when no farm found with given search parameters

.PARAMETER HvServer
    Reference to Horizon View Server to query the data from. If the value is not passed or null then first element from global:DefaultHVServers would be considered in-place of hvServer.

.EXAMPLE
     Get-HVFarmSummary -FarmName 'Farm-01'
     Queries and returns farmSummary objects based on given parameter farmName

.EXAMPLE
     Get-HVFarmSummary -FarmName 'Farm-01' -FarmDisplayName 'Sales RDS Farm'
     Queries and returns farmSummary objects based on given parameters farmName, farmDisplayName

.EXAMPLE
     Get-HVFarmSummary -FarmName 'Farm-01' -FarmType 'MANUAL'
     Queries and returns farmSummary objects based on given parameters farmName, farmType

.EXAMPLE
     Get-HVFarmSummary -FarmName 'Farm-01' -FarmType 'MANUAL' -Enabled $true
     Queries and returns farmSummary objects based on given parameters farmName, FarmType etc

.EXAMPLE
     Get-HVFarmSummary -FarmName 'Farm-0*'
     Queries and returns farmSummary objects based on given parameter farmName with wild character *

.OUTPUTs
    Returns the list of FarmSummary object matching the query criteria.

.NOTES
    Author                      : Praveen Mathamsetty.
    Author email                : pmathamsetty@vmware.com
    Version                     : 1.1

    ===Tested Against Environment====
    Horizon View Server Version : 7.0.2, 7.1.0
    PowerCLI Version            : PowerCLI 6.5, PowerCLI 6.5.1
    PowerShell Version          : 5.0
#>

  [CmdletBinding()]

  param(
    [Parameter(Mandatory = $false)]
    [string]
    $FarmName,

    [Parameter(Mandatory = $false)]
    [string]
    $FarmDisplayName,

    [Parameter(Mandatory = $false)]
    [ValidateSet('MANUAL','AUTOMATED')]
    [string]
    $FarmType,

    [Parameter(Mandatory = $false)]
    [boolean]
    $Enabled,

	[Parameter(Mandatory = $false)]
    [boolean]
    $SuppressInfo = $false,

    [Parameter(Mandatory = $false)]
    $HvServer = $null
  )

  $services = Get-ViewAPIService -hvServer $hvServer
  if ($null -eq $services) {
    Write-Error "Could not retrieve ViewApi services from connection object"
    break
  }
  $farmList = Find-HVFarm -Param $PSBoundParameters
  if (!$farmList -and !$SuppressInfo) {
    Write-Host "Get-HVFarmSummary: No Farm Found with given search parameters"
  }
  Return $farmList
}

function Find-HVFarm {
   [CmdletBinding()]
   param(
    [Parameter(Mandatory = $true)]
    $Param
  )
  #
  # This translates the function arguments into the View API properties that must be queried
  $farmSelectors = @{
    'farmName' = 'data.name';
    'farmDisplayName' = 'data.displayName';
    'enabled' = 'data.enabled';
    'farmType' = 'data.type';
  }

  $params = $Param

  $query_service_helper = New-Object VMware.Hv.QueryServiceService
  $query = New-Object VMware.Hv.QueryDefinition

  $wildcard = $false
  # build the query values
  if ($params['FarmName'] -and $params['FarmName'].contains('*')) {
    $wildcard = $true
  }
  if ($params['FarmDisplayName'] -and $params['FarmDisplayName'].contains('*')) {
    $wildcard = $true
  }

  $query.queryEntityType = 'FarmSummaryView'
  if (! $wildcard) {
    [VMware.Hv.queryfilter[]]$filterSet = @()
    foreach ($setting in $farmSelectors.Keys) {
      if ($null -ne $params[$setting]) {
        $equalsFilter = New-Object VMware.Hv.QueryFilterEquals
        $equalsFilter.memberName = $farmSelectors[$setting]
        $equalsFilter.value = $params[$setting]
        $filterSet += $equalsFilter
      }
    }
    if ($filterSet.Count -gt 0) {
      $queryList = New-Object VMware.Hv.QueryFilterAnd
      $queryList.Filters = $filterset
      $query.Filter = $queryList
    }

    $queryResults = $query_service_helper.QueryService_Query($services, $query)
    $farmList = $queryResults.results
  } elseif ($wildcard -or [string]::IsNullOrEmpty($farmList)){
    $query.Filter = $null
    $queryResults = $query_service_helper.QueryService_Query($services,$query)
    $strFilterSet = @()
    foreach ($setting in $farmSelectors.Keys) {
      if ($null -ne $params[$setting]) {
        if ($wildcard -and (($setting -eq 'FarmName') -or ($setting -eq 'FarmDisplayName')) ) {
          $strFilterSet += '($_.' + $farmSelectors[$setting] + ' -like "' + $params[$setting] + '")'
        } else {
          $strFilterSet += '($_.' + $farmSelectors[$setting] + ' -eq "' + $params[$setting] + '")'
        }
      }
    }
    $whereClause =  [string]::Join(' -and ', $strFilterSet)
    $scriptBlock = [Scriptblock]::Create($whereClause)
    $farmList = $queryResults.results | Where-Object $scriptBlock
  }
  Return $farmList
}

function Get-HVPool {
<#
.Synopsis
   Gets pool(s) information with given search parameters.

.DESCRIPTION
   Queries and returns pools information, the pools list would be determined based on
   queryable fields poolName, poolDisplayName, poolType, userAssignment, enabled,
   provisioningEnabled. When more than one fields are used for query the pools which
   satisfy all fields criteria would be returned.

.PARAMETER PoolName
   Pool name to query for.
   If the value is null or not provided then filter will not be applied,
   otherwise the pools which has name same as value will be returned.

.PARAMETER PoolDisplayName
   Pool display name to query for.
   If the value is null or not provided then filter will not be applied,
   otherwise the pools which has display name same as value will be returned.

.PARAMETER PoolType
   Pool type to filter with.
   If the value is null or not provided then filter will not be applied.
   If the value is MANUAL then only manual pools would be returned.
   If the value is AUTOMATED then only automated pools would be returned
   If the value is RDS then only Remote Desktop Service Pool pools would be returned

.PARAMETER UserAssignment
   User Assignment of pool to filter with.
   If the value is null or not provided then filter will not be applied.
   If the value is DEDICATED then only dedicated pools would be returned.
   If the value is FLOATING then only floating pools would be returned

.PARAMETER Enabled
   Pool enablement to filter with.
   If the value is not provided then then filter will not be applied.
   If the value is true then only pools which are enabled would be returned.
   If the value is false then only pools which are disabled would be returned.

.PARAMETER SuppressInfo
   Suppress text info, when no pool found with given search parameters

.PARAMETER HvServer
    Reference to Horizon View Server to query the pools from. If the value is not passed or null then
    first element from global:DefaultHVServers would be considered in-place of hvServer

.EXAMPLE
   Get-HVPool -PoolName 'mypool' -PoolType MANUAL -UserAssignment FLOATING -Enabled $true -ProvisioningEnabled $true
   Queries and returns pool object(s) based on given parameters poolName, poolType etc.

.EXAMPLE
   Get-HVPool -PoolType AUTOMATED -UserAssignment FLOATING
   Queries and returns pool object(s) based on given parameters poolType and userAssignment

.EXAMPLE
   Get-HVPool -PoolName 'myrds' -PoolType RDS -UserAssignment DEDICATED -Enabled $false
   Queries and returns pool object(s) based on given parameters poolName, PoolType etc.

.EXAMPLE
   Get-HVPool -PoolName 'myrds' -PoolType RDS -UserAssignment DEDICATED -Enabled $false -HvServer $mycs
   Queries and returns pool object(s) based on given parameters poolName and HvServer etc.

.OUTPUTS
   Returns list of objects of type DesktopInfo

.NOTES
    Author                      : Praveen Mathamsetty.
    Author email                : pmathamsetty@vmware.com
    Version                     : 1.1

    ===Tested Against Environment====
    Horizon View Server Version : 7.0.2, 7.1.0
    PowerCLI Version            : PowerCLI 6.5, PowerCLI 6.5.1
    PowerShell Version          : 5.0
#>

  [CmdletBinding()]

  param(
    [Parameter(Mandatory = $false)]
    [string]
    $PoolName,

    [Parameter(Mandatory = $false)]
    [string]
    $PoolDisplayName,

    [Parameter(Mandatory = $false)]
    [ValidateSet('MANUAL','AUTOMATED','RDS')]
    [string]
    $PoolType,

    [Parameter(Mandatory = $false)]
    [ValidateSet('FLOATING','DEDICATED')]
    [string]
    $UserAssignment,

    [Parameter(Mandatory = $false)]
    [boolean]
    $Enabled,

    [Parameter(Mandatory = $false)]
    [boolean]
    $ProvisioningEnabled,

    [Parameter(Mandatory = $false)]
    [boolean]
    $SuppressInfo = $false,

    [Parameter(Mandatory = $false)]
    $HvServer = $null
  )

  $services = Get-ViewAPIService -hvServer $hvServer
  if ($null -eq $services) {
    Write-Error "Could not retrieve ViewApi services from connection object"
    break
  }
  $poolList = Find-HVPool -Param $PSBoundParameters
  if (! $poolList) {
    if (! $SuppressInfo) {
      Write-Host "Get-HVPool: No Pool Found with given search parameters"
	}
    return $poolList
  }
  $queryResults = @()
  $desktop_helper = New-Object VMware.Hv.DesktopService
  foreach ($id in $poolList.id) {
    $info = $desktop_helper.Desktop_Get($services,$id)
    $queryResults += $info
  }
  $poolList = $queryResults
  return $poolList
}

function Get-HVPoolSummary {
<#
.Synopsis
   Gets pool summary with given search parameters.

.DESCRIPTION
   Queries and returns pools information, the pools list would be determined based on
   queryable fields poolName, poolDisplayName, poolType, userAssignment, enabled,
   provisioningEnabled. When more than one fields are used for query the pools which
   satisfy all fields criteria would be returned.

.PARAMETER PoolName
   Pool name to query for.
   If the value is null or not provided then filter will not be applied,
   otherwise the pools which has name same as value will be returned.

.PARAMETER PoolDisplayName
   Pool display name to query for.
   If the value is null or not provided then filter will not be applied,
   otherwise the pools which has display name same as value will be returned.

.PARAMETER PoolType
   Pool type to filter with.
   If the value is null or not provided then filter will not be applied.
   If the value is MANUAL then only manual pools would be returned.
   If the value is AUTOMATED then only automated pools would be returned
   If the value is RDS then only Remote Desktop Service Pool pools would be returned

.PARAMETER UserAssignment
   User Assignment of pool to filter with.
   If the value is null or not provided then filter will not be applied.
   If the value is DEDICATED then only dedicated pools would be returned.
   If the value is FLOATING then only floating pools would be returned

.PARAMETER Enabled
   Pool enablement to filter with.
   If the value is not provided then then filter will not be applied.
   If the value is true then only pools which are enabled would be returned.
   If the value is false then only pools which are disabled would be returned.

.PARAMETER SuppressInfo
   Suppress text info, when no pool found with given search parameters

.PARAMETER HvServer
    Reference to Horizon View Server to query the pools from. If the value is not passed or null then
    first element from global:DefaultHVServers would be considered in-place of hvServer

.EXAMPLE
   Get-HVPoolSummary -PoolName 'mypool' -PoolType MANUAL -UserAssignment FLOATING -Enabled $true -ProvisioningEnabled $true
   Queries and returns desktopSummaryView based on given parameters poolName, poolType etc.

.EXAMPLE
   Get-HVPoolSummary -PoolType AUTOMATED -UserAssignment FLOATING
   Queries and returns desktopSummaryView based on given parameters poolType, userAssignment.

.EXAMPLE
   Get-HVPoolSummary -PoolName 'myrds' -PoolType RDS -UserAssignment DEDICATED -Enabled $false
   Queries and returns desktopSummaryView based on given parameters poolName, poolType, userAssignment etc.

.EXAMPLE
   Get-HVPoolSummary -PoolName 'myrds' -PoolType RDS -UserAssignment DEDICATED -Enabled $false -HvServer $mycs
   Queries and returns desktopSummaryView based on given parameters poolName, HvServer etc.

.OUTPUTS
   Returns list of DesktopSummaryView

.NOTES
    Author                      : Praveen Mathamsetty.
    Author email                : pmathamsetty@vmware.com
    Version                     : 1.1

    ===Tested Against Environment====
    Horizon View Server Version : 7.0.2, 7.1.0
    PowerCLI Version            : PowerCLI 6.5, PowerCLI 6.5.1
    PowerShell Version          : 5.0
#>

  [CmdletBinding()]

  param(
    [Parameter(Mandatory = $false)]
    [string]
    $PoolName,

    [Parameter(Mandatory = $false)]
    [string]
    $PoolDisplayName,

    [Parameter(Mandatory = $false)]
    [ValidateSet('MANUAL','AUTOMATED','RDS')]
    [string]
    $PoolType,

    [Parameter(Mandatory = $false)]
    [ValidateSet('FLOATING','DEDICATED')]
    [string]
    $UserAssignment,

    [Parameter(Mandatory = $false)]
    [boolean]
    $Enabled,

    [Parameter(Mandatory = $false)]
    [boolean]
    $ProvisioningEnabled,

    [Parameter(Mandatory = $false)]
    [boolean]
    $SuppressInfo = $false,

    [Parameter(Mandatory = $false)]
    $HvServer = $null
  )

  $services = Get-ViewAPIService -hvServer $hvServer
  if ($null -eq $services) {
    Write-Error "Could not retrieve ViewApi services from connection object"
    break
  }
  $pool_list = Find-HVPool -Param $psboundparameters
  if (!$pool_list -and !$suppressInfo) {
	Write-Host "Get-HVPoolSummary: No Pool Found with given search parameters"
  }
  Return $pool_list
}

function Find-HVPool {
  [CmdletBinding()]
  param(
    [Parameter(Mandatory = $true)]
    $Param
  )

  # This translates the function arguments into the View API properties that must be queried
  $poolSelectors = @{
    'poolName' = 'desktopSummaryData.name';
    'poolDisplayName' = 'desktopSummaryData.displayName';
    'enabled' = 'desktopSummaryData.enabled';
    'poolType' = 'desktopSummaryData.type';
    'userAssignment' = 'desktopSummaryData.userAssignment';
    'provisioningEnabled' = 'desktopSummaryData.provisioningEnabled'
  }

  $params = $Param

  $query_service_helper = New-Object VMware.Hv.QueryServiceService
  $query = New-Object VMware.Hv.QueryDefinition

  $wildCard = $false
  #Only supports wild card '*'
  if ($params['PoolName'] -and $params['PoolName'].contains('*')) {
    $wildcard = $true
  }
  if ($params['PoolDisplayName'] -and $params['PoolDisplayName'].contains('*')) {
    $wildcard = $true
  }
  # build the query values
  $query.queryEntityType = 'DesktopSummaryView'
  if (! $wildcard) {
    [VMware.Hv.queryfilter[]]$filterSet = @()
    foreach ($setting in $poolSelectors.Keys) {
      if ($null -ne $params[$setting]) {
        $equalsFilter = New-Object VMware.Hv.QueryFilterEquals
        $equalsFilter.memberName = $poolSelectors[$setting]
        $equalsFilter.value = $params[$setting]
        $filterSet += $equalsFilter
      }
    }
    if ($filterSet.Count -gt 0) {
      $andFilter = New-Object VMware.Hv.QueryFilterAnd
      $andFilter.Filters = $filterset
      $query.Filter = $andFilter
    }
    $queryResults = $query_service_helper.QueryService_Query($services,$query)
    $poolList = $queryResults.results
  }
  if ($wildcard -or [string]::IsNullOrEmpty($poolList)) {
    $query.Filter = $null
    $queryResults = $query_service_helper.QueryService_Query($services,$query)
    $strFilterSet = @()
    foreach ($setting in $poolSelectors.Keys) {
      if ($null -ne $params[$setting]) {
        if ($wildcard -and (($setting -eq 'PoolName') -or ($setting -eq 'PoolDisplayName')) ) {
          $strFilterSet += '($_.' + $poolSelectors[$setting] + ' -like "' + $params[$setting] + '")'
        } else {
          $strFilterSet += '($_.' + $poolSelectors[$setting] + ' -eq "' + $params[$setting] + '")'
        }
      }
    }
    $whereClause =  [string]::Join(' -and ', $strFilterSet)
    $scriptBlock = [Scriptblock]::Create($whereClause)
    $poolList = $queryResults.results | Where-Object $scriptBlock
  }
  Return $poolList
}


function Get-HVQueryFilter {
<#
.Synopsis
    Creates a VMware.Hv.QueryFilter based on input provided.

.DESCRIPTION
    This is a factory method to create a VMware.Hv.QueryFilter. The type of the QueryFilter would be determined based on switch used.

.PARAMETER MemberName
    Property path separated by . (dot) from the root of queryable data object which is being queried for

.PARAMETER MemberValue
    Value of property (memberName) which is used for filtering

.PARAMETER Eq
    Switch to create QueryFilterEquals filter

.PARAMETER Ne
    Switch to create QueryFilterNotEquals filter

.PARAMETER Contains
    Switch to create QueryFilterContains filter

.PARAMETER Startswith
    Switch to create QueryFilterStartsWith filter

.PARAMETER Not
    Switch to create QueryFilterNot filter, used for negating existing filter

.PARAMETER And
    Switch to create QueryFilterAnd filter, used for joing two or more filters

.PARAMETER Or
    Switch to create QueryFilterOr filter, used for joing two or more filters

.PARAMETER Filter
    Filter to used in QueryFilterNot to negate the result

.PARAMETER Filters
    List of filters to join using QueryFilterAnd or QueryFilterOr


.EXAMPLE
    Get-HVQueryFilter data.name -Eq vmware
    Creates queryFilterEquals with given parameters memberName(position 0) and memberValue(position 2)

.EXAMPLE
    Get-HVQueryFilter -MemberName data.name -Eq -MemberValue vmware
    Creates queryFilterEquals with given parameters memberName and memberValue

.EXAMPLE
    Get-HVQueryFilter data.name -Ne vmware
    Creates queryFilterNotEquals filter with given parameters memberName and memberValue

.EXAMPLE
    Get-HVQueryFilter data.name -Contains vmware
    Creates queryFilterContains with given parameters memberName and memberValue

.EXAMPLE
    Get-HVQueryFilter data.name -Startswith vmware
    Creates queryFilterStartsWith with given parameters memberName and memberValue

.EXAMPLE
    $filter = Get-HVQueryFilter data.name -Startswith vmware
    Get-HVQueryFilter -Not $filter
    Creates queryFilterNot with given parameter filter

.EXAMPLE
    $filter1 = Get-HVQueryFilter data.name -Startswith vmware
    $filter2 = Get-HVQueryFilter data.name -Contains pool
    Get-HVQueryFilter -And @($filter1, $filter2)

    Creates queryFilterAnd with given parameter filters array

.EXAMPLE
    $filter1 = Get-HVQueryFilter data.name -Startswith vmware
    $filter2 = Get-HVQueryFilter data.name -Contains pool
    Get-HVQueryFilter -Or @($filter1, $filter2)
    Creates queryFilterOr with given parameter filters array

.OUTPUTS
    Returns the QueryFilter object

.NOTES
    Author                      : Kummara Ramamohan.
    Author email                : kramamohan@vmware.com
    Version                     : 1.1

    ===Tested Against Environment====
    Horizon View Server Version : 7.0.2, 7.1.0
    PowerCLI Version            : PowerCLI 6.5, PowerCLI 6.5.1
    PowerShell Version          : 5.0
#>
  [CmdletBinding()]
  param(
    # Type 1 parametersets which requires memberName, memberValue as input
    [Parameter(ParameterSetName = 'eq',Mandatory = $true,Position = 0)]
    [Parameter(ParameterSetName = 'contains',Mandatory = $true,Position = 0)]
    [Parameter(ParameterSetName = 'startswith',Mandatory = $true,Position = 0)]
    [Parameter(ParameterSetName = 'ne',Mandatory = $true,Position = 0)]
    [string]$MemberName,

    [Parameter(ParameterSetName = "eq",Mandatory = $true,Position = 1)]
    [switch]$Eq,

    [Parameter(ParameterSetName = "contains",Mandatory = $true,Position = 1)]
    [switch]$Contains,

    [Parameter(ParameterSetName = "startswith",Mandatory = $true,Position = 1)]
    [switch]$Startswith,

    [Parameter(ParameterSetName = "ne",Mandatory = $true,Position = 1)]
    [switch]$Ne,

    [Parameter(ParameterSetName = 'eq',Mandatory = $true,Position = 2)]
    [Parameter(ParameterSetName = 'contains',Mandatory = $true,Position = 2)]
    [Parameter(ParameterSetName = 'startswith',Mandatory = $true,Position = 2)]
    [Parameter(ParameterSetName = 'ne',Mandatory = $true,Position = 2)]
    [System.Object]$MemberValue,

    # Negation #
    [Parameter(ParameterSetName = "not",Mandatory = $true,Position = 0)]
    [switch]$Not,

    [Parameter(ParameterSetName = 'not',Mandatory = $true,Position = 1)]
    [VMware.Hv.QueryFilter]$Filter,

    # Aggregators to join more than 1 filters #
    [Parameter(ParameterSetName = 'and',Mandatory = $true,Position = 0)]
    [switch]$And,

    [Parameter(ParameterSetName = "or",Mandatory = $true,Position = 0)]
    [switch]$Or,

    [Parameter(ParameterSetName = "and",Mandatory = $true,Position = 1)]
    [Parameter(ParameterSetName = "or",Mandatory = $true,Position = 1)]
    [VMware.Hv.QueryFilter[]]$Filters
  )

  begin {
    $switchToClassName = @{
      'eq' = 'QueryFilterEquals';
      'startswith' = 'QueryFilterStartsWith';
      'contains' = 'QueryFilterContains';
      'ne' = 'QueryFilterNotEquals';
      'not' = 'QueryFilterNot';
      'and' = 'QueryFilterAnd';
      'or' = 'QueryFilterOr';
    }
  }
  process {
    $queryFilter = Get-HVObject -typeName $switchToClassName[$PsCmdlet.ParameterSetName]

    switch ($PsCmdlet.ParameterSetName) {

      { @( 'eq','startswith','contains','ne') -icontains $_ } {
        $queryFilter.memberName = $memberName
        $queryFilter.value = $membervalue
      }

      { @( 'and','or') -icontains $_ } {
        $queryFilter.filters = $filters
      }

      { @( 'not') -icontains $_ } {
        $queryFilter.filter = $filter
      }
    }
  }
  end {
    return $queryFilter
  }
}

function Get-HVQueryResult {
<#
.Synopsis
    Returns the query results from ViewApi Query Service

.DESCRIPTION
    Get-HVQueryResult is a API to query the results using ViewApi. The filtering of the returned
    list would be done based on input parameters filter, sortDescending, sortyBy, limit

.PARAMETER EntityType
    ViewApi Queryable entity type which is being queried for.The return list would be containing objects of entityType

.PARAMETER Filter
    Filter to used for filtering the results, See Get-HVQueryFilter for more information

.PARAMETER SortBy
    Data field path used for sorting the results

.PARAMETER SortDescending
    If the value is set to true (default) then the results will be sorted in descending order
    If the value is set to false then the results will be sorted in ascending order

.PARAMETER Limit
    Max number of objects to retrieve. Default would be 0 which means retieve all the results

.PARAMETER HvServer
    Reference to Horizon View Server to query the data from. If the value is not passed or null then
    first element from global:DefaultHVServers would be considered in-place of hvServer

.EXAMPLE
    Get-HVQueryResult DesktopSummaryView
    Returns query results of entityType DesktopSummaryView(position 0)

.EXAMPLE
    Get-HVQueryResult DesktopSummaryView (Get-HVQueryFilter data.name -Eq vmware)
    Returns query results of entityType DesktopSummaryView(position 0) with given filter(position 1)

.EXAMPLE
    Get-HVQueryResult -EntityType DesktopSummaryView -Filter (Get-HVQueryFilter desktopSummaryData.name -Eq vmware)
    Returns query results of entityType DesktopSummaryView with given filter

.EXAMPLE
    $myFilter = Get-HVQueryFilter data.name -Contains vmware
    Get-HVQueryResult -EntityType DesktopSummaryView -Filter $myFilter -SortBy desktopSummaryData.displayName -SortDescending $false
    Returns query results of entityType DesktopSummaryView with given filter and also sorted based on dispalyName

.EXAMPLE
    Get-HVQueryResult DesktopSummaryView -Limit 10
    Returns query results of entityType DesktopSummaryView, maximum count equal to limit

.OUTPUTS
    Returns the list of objects of entityType

.NOTES
    Author                      : Kummara Ramamohan.
    Author email                : kramamohan@vmware.com
    Version                     : 1.1

    ===Tested Against Environment====
    Horizon View Server Version : 7.0.2, 7.1.0,7.4
    PowerCLI Version            : PowerCLI 6.5, PowerCLI 6.5.1, PowerCLI 10.1.1
    PowerShell Version          : 5.0
#>

  [CmdletBinding()]
  param(
    [Parameter(Position = 0,Mandatory = $true)]
    [ValidateSet('ADUserOrGroupSummaryView','ApplicationIconInfo','ApplicationInfo','DesktopSummaryView',
      'EntitledUserOrGroupGlobalSummaryView','EntitledUserOrGroupLocalSummaryView','FarmHealthInfo',
      'FarmSummaryView','GlobalApplicationEntitlementInfo','GlobalEntitlementSummaryView',
      'MachineNamesView','MachineSummaryView','PersistentDiskInfo','PodAssignmentInfo',
      'RDSServerInfo','RDSServerSummaryView','RegisteredPhysicalMachineInfo','SampleInfo',
      'SessionLocalSummaryView','TaskInfo','URLRedirectionInfo','UserHomeSiteInfo','EventSummaryView','GlobalApplicationEntitlementInfo')]
    [string]$EntityType,

    [Parameter(Position = 1,Mandatory = $false)]
    [VMware.Hv.QueryFilter]$Filter = $null,

    [Parameter(Position = 2,Mandatory = $false)]
    [string]$SortBy = $null,

    [Parameter(Position = 3,Mandatory = $false)]
    [bool]$SortDescending = $true,

    [Parameter(Position = 4,Mandatory = $false)]
    [int16]$Limit = 0,

    [Parameter(Position = 5,Mandatory = $false)]
    $HvServer = $null
  )

  begin {
    $services = Get-ViewAPIService -hvServer $hvServer

    if ($null -eq $services) {
      Write-Error "Could not retrieve ViewApi services from connection object"
      break
    }
  }

  process {
    $queryDef = New-Object VMware.Hv.QueryDefinition
    $queryDef.queryEntityType = $entityType
    $queryDef.sortDescending = $sortDescending

    if ($sortBy) {
      $queryDef.sortBy = $sortBy
    }

    if ($limit -gt 0) {
      $queryDef.limit = $limit
    }

    $queryDef.filter = $filter

    $returnList = @()
    $query_service_helper = New-Object VMware.Hv.QueryServiceService
    $queryResults = $query_service_helper.QueryService_Create($services,$queryDef)
    $returnList += $queryResults.results

    while ($queryResults -and ($queryResults.RemainingCount -gt 0)) {
      $queryResults = $query_service_helper.QueryService_GetNext($services,$queryResults.id)
      $returnList += $queryResults.results
    }

    if ($queryResults.id) {
      $query_service_helper.QueryService_Delete($services,$queryResults.id)
    }
  }

  end {
    return $returnList
  }
}


function New-HVFarm {
<#
.Synopsis
   Creates a new farm.

.DESCRIPTION
   Creates a new farm, the type would be determined based on input parameters.

.PARAMETER LinkedClone
   Switch to Create Automated Linked Clone farm.

.PARAMETER InstantClone
   Switch to Create Automated Instant Clone farm.

.PARAMETER Manual
   Switch to Create Manual farm.

.PARAMETER FarmName
   Name of the farm.

.PARAMETER FarmDisplayName
   Display name of the farm.

.PARAMETER Description
   Description of the farm.

.PARAMETER AccessGroup
   View access group can organize the servers in the farm.
   Default Value is 'Root'.

.PARAMETER Enable
    Set true to enable the farm otherwise set to false.

.PARAMETER Vcenter
    Virtual Center server-address (IP or FQDN) where the farm RDS Servers are located. This should be same as provided to the Connection Server while adding the vCenter server.

.PARAMETER ParentVM
    Base image VM for RDS Servers.
    Applicable to Linked Clone and Instant Clone farms.

.PARAMETER SnapshotVM
    Base image snapshot for RDS Servers.

.PARAMETER VmFolder
    VM folder to deploy the RDSServers to.
    Applicable to Linked Clone and Instant Clone farms.

.PARAMETER HostOrCluster
    Host or cluster to deploy the RDSServers in.
    Applicable to Linked Clone and Instant Clone farms.

.PARAMETER ResourcePool
    Resource pool to deploy the RDSServers.
    Applicable to Linked Clone and Instant Clone farms.

.PARAMETER Datastores
    Datastore names to store the RDSServer.
    Applicable to Linked Clone and Instant Clone farms.

.PARAMETER UseVSAN
    Whether to use vSphere VSAN. This is applicable for vSphere 5.5 or later.
    Applicable to Linked Clone and Instant Clone farms.

.PARAMETER EnableProvisioning
    Set to true to enable provision of RDSServers immediately in farm.
    Applicable to Linked Clone and Instant Clone farms.

.PARAMETER StopProvisioningOnError
    Set to true to stop provisioning of all RDSServers on error.
    Applicable to Linked Clone and Instant Clone farms.

.PARAMETER TransparentPageSharingScope
    The transparent page sharing scope.
    The default value is 'VM'.

.PARAMETER NamingMethod
    Determines how the VMs in the farm are named.
    Set PATTERN to use naming pattern.
    The default value is PATTERN. Currently only PATTERN is allowed.

.PARAMETER NamingPattern
    RDS Servers will be named according to the specified naming pattern.
    Value would be considered only when $namingMethod = PATTERN
    The default value is farmName + '{n:fixed=4}'.

.PARAMETER MinReady
    Minimum number of ready (provisioned) Servers during View Composer maintenance operations.
    The default value is 0.
    Applicable to Linked Clone farms.

.PARAMETER MaximumCount
    Maximum number of Servers in the farm.
    The default value is 1.
    Applicable to Linked Clone and Instant Clone farms.

.PARAMETER AdContainer
    This is the Active Directory container which the Servers will be added to upon creation.
    The default value is 'CN=Computers'.
    Applicable to Linked Clone and Instant Clone farms.

.PARAMETER NetBiosName
    Domain Net Bios Name.
    Applicable to Linked Clone and Instant Clone farms.

.PARAMETER DomainAdmin
    Domain Administrator user name which will be used to join the domain.
    Default value is null.
    Applicable to Linked Clone and Instant Clone farms.

.PARAMETER SysPrepName
    The customization spec to use.
    Applicable to Linked Clone farms.

.PARAMETER PowerOffScriptName
    Power off script. ClonePrep can run a customization script on instant-clone machines before they are powered off. Provide the path to the script on the parent virtual machine.
    Applicable to Instant Clone farms.

.PARAMETER PowerOffScriptParameters
    Power off script parameters. Example: p1 p2 p3
    Applicable to Instant Clone farms.

.PARAMETER PostSynchronizationScriptName
    Post synchronization script. ClonePrep can run a customization script on instant-clone machines after they are created or recovered or a new image is pushed. Provide the path to the script on the parent virtual machine.
    Applicable to Instant Clone farms.

.PARAMETER PostSynchronizationScriptParameters
    Post synchronization script parameters. Example: p1 p2 p3
    Applicable to Instant Clone farms.

.PARAMETER RdsServers
    List of existing registered RDS server names to add into manual farm.
    Applicable to Manual farms.

.PARAMETER Spec
    Path of the JSON specification file.

.PARAMETER NumCPU
    Number of CPU of the Vm Instances

.PARAMETER Ram
    Ram of the Vm Instances
    Units in MB for Ram parameter

.PARAMETER CoresPerSocket
    CoresPerSocket of the Vm Instances

.PARAMETER HvServer
    Reference to Horizon View Server to query the farms from. If the value is not passed or null then first element from global:DefaultHVServers would be considered in-place of hvServer.

.EXAMPLE
    New-HVFarm -LinkedClone -FarmName 'LCFarmTest' -ParentVM 'Win_Server_2012_R2' -SnapshotVM 'Snap_RDS' -VmFolder 'PoolVM' -HostOrCluster 'cls' -ResourcePool 'cls' -Datastores 'datastore1 (5)' -FarmDisplayName 'LC Farm Test' -Description 'created LC Farm from PS' -EnableProvisioning $true -StopProvisioningOnError $false -NamingPattern "LCFarmVM_PS" -MinReady 1 -MaximumCount 1  -SysPrepName "RDSH_Cust2" -NetBiosName "adviewdev"
    Creates new linkedClone farm by using naming pattern

.EXAMPLE
    New-HVFarm -InstantClone -FarmName 'ICFarmCL' -ParentVM 'vm-rdsh-ic' -SnapshotVM 'Snap_5' -VmFolder 'Instant_Clone_VMs' -HostOrCluster 'vimal-cluster' -ResourcePool 'vimal-cluster' -Datastores 'datastore1' -FarmDisplayName 'IC Farm using CL' -Description 'created IC Farm from PS command-line' -EnableProvisioning $true -StopProvisioningOnError $false -NamingPattern "ICFarmCL-" -NetBiosName "ad-vimalg"
    Creates new linkedClone farm by using naming pattern

.EXAMPLE
    New-HVFarm -Spec C:\VMWare\Specs\LinkedClone.json -Confirm:$false
    Creates new linkedClone farm by using json file

.EXAMPLE
    New-HVFarm -Spec C:\VMWare\Specs\InstantCloneFarm.json -Confirm:$false
    Creates new instantClone farm by using json file

.EXAMPLE
    New-HVFarm -Manual -FarmName "manualFarmTest" -FarmDisplayName "manualFarmTest" -Description "Manual PS Test" -RdsServers "vm-for-rds.eng.vmware.com","vm-for-rds-2.eng.vmware.com" -Confirm:$false
    Creates new manual farm by using rdsServers names

.EXAMPLE
    New-HVFarm -Spec C:\VMWare\Specs\AutomatedInstantCloneFarm.json -FarmName 'InsPool' -NamingPattern 'InsFarm-'
    Creates new instant clone farm by reading few parameters from json and few parameters from command line.

.OUTPUTS
  None

.NOTES
    Author                      : praveen mathamsetty.
    Author email                : pmathamsetty@vmware.com
    Version                     : 1.1

    ===Tested Against Environment====
    Horizon View Server Version : 7.0.2, 7.1.0
    PowerCLI Version            : PowerCLI 6.5, PowerCLI 6.5.1
    PowerShell Version          : 5.0
#>

  [CmdletBinding(
    SupportsShouldProcess = $true,
    ConfirmImpact = 'High'
  )]
  param(

    [Parameter(Mandatory = $true,ParameterSetName = "LINKED_CLONE")]
    [switch]
    $LinkedClone,

    [Parameter(Mandatory = $true,ParameterSetName = "INSTANT_CLONE")]
    [switch]
    $InstantClone,

    [Parameter(Mandatory = $true,ParameterSetName = 'MANUAL')]
    [switch]
    $Manual,

    #farmSpec.farmData.name
    [Parameter(Mandatory = $true,ParameterSetName = 'MANUAL')]
    [Parameter(Mandatory = $true,ParameterSetName = "LINKED_CLONE")]
    [Parameter(Mandatory = $true,ParameterSetName = "INSTANT_CLONE")]
    [Parameter(Mandatory = $false,ParameterSetName = 'JSON_FILE')]
    [string]
    $FarmName,

    #farmSpec.farmData.displayName
    [Parameter(Mandatory = $false)]
    [string]
    $FarmDisplayName = $farmName,

    #farmSpec.farmData.description
    [Parameter(Mandatory = $false)]
    [string]
    $Description = ' ',

    #farmSpec.farmData.accessGroup
    [Parameter(Mandatory = $false)]
    [string]
    $AccessGroup = 'Root',

    #farmSpec.farmData.enabled
    [Parameter(Mandatory = $false)]
    [boolean]
    $Enable = $true,

    #farmSpec.data.settings.disconnectedSessionTimeoutPolicy
    [Parameter(Mandatory = $false)]
    [ValidateSet("IMMEDIATE","NEVER","AFTER")]
    [string]
    $DisconnectedSessionTimeoutPolicy  = "NEVER",

    #farmSpec.data.settings.disconnectedSessionTimeoutMinutes
    [Parameter(Mandatory = $false)]
    [ValidateRange(1,[Int]::MaxValue)]
    [int]
    $DisconnectedSessionTimeoutMinutes,

    #farmSpec.data.settings.emptySessionTimeoutPolicy
    [Parameter(Mandatory = $false)]
    [ValidateSet("NEVER","AFTER")]
    [string]
    $EmptySessionTimeoutPolicy = "AFTER",

    #farmSpec.data.settings.emptySessionTimeoutMinutes
    [Parameter(Mandatory = $false)]
    [ValidateSet(1,[Int]::MaxValue)]
    [int]
    $EmptySessionTimeoutMinutes = 1,

    #farmSpec.data.settings.logoffAfterTimeout
    [Parameter(Mandatory = $false)]
    [boolean]
    $LogoffAfterTimeout = $false,

    #farmSpec.data.displayProtocolSettings.defaultDisplayProtocol
    [Parameter(Mandatory = $false)]
    [ValidateSet("RDP","PCOIP","BLAST")]
    [string]
    $DefaultDisplayProtocol = "PCOIP",

    #farmSpec.data.displayProtocolSettings.allowDisplayProtocolOverride
    [Parameter(Mandatory = $false)]
    [boolean]
    $AllowDisplayProtocolOverride = $true,

    #farmSpec.data.displayProtocolSettings.enableHTMLAccess
    [Parameter(Mandatory = $false)]
    [boolean]
    $EnableHTMLAccess = $false,

    #farmSpec.data.displayProtocolSettings.EnableCollaboration
    [Parameter(Mandatory = $false)]
    [boolean]
    $EnableCollaboration = $false,

    #farmSpec.data.displayProtocolSettings.EnableGRIDvGPUs
    [Parameter(Mandatory = $false)]
    [boolean]
    $EnableGRIDvGPUs = $false,

    #farmSpec.data.displayProtocolSettings.VGPUGridProfile
    [Parameter(Mandatory = $false)]
    [string]
    $VGPUGridProfile,

    #farmSpec.data.serverErrorThreshold
    [Parameter(Mandatory = $false)]
    [ValidateRange(0,[Int]::MaxValue)]
    $ServerErrorThreshold = 0,

    #farmSpec.data.mirageConfigurationOverrides.overrideGlobalSetting
    [Parameter(Mandatory = $false)]
    [boolean]
    $OverrideGlobalSetting = $false,

    #farmSpec.data.mirageConfigurationOverrides.enabled
    [Parameter(Mandatory = $false)]
    [boolean]
    $MirageServerEnabled,

    #farmSpec.data.mirageConfigurationOverrides.url
    [Parameter(Mandatory = $false)]
    [string]
    $Url,

    #farmSpec.data.lbSettings.lbMetricsSettings.includeSessionCount
    [Parameter(Mandatory = $false)]
    [boolean]
    $includeSessionCount = $true,

    #farmSpec.data.lbSettings.lbMetricsSettings.cpuThreshold
    [ValidateRange(0, 100)]
    [Parameter(Mandatory = $false)]
    [int]
    $cpuThreshold = 0,

    #farmSpec.data.lbSettings.lbMetricsSettings.memThreshold
    [ValidateRange(0, 100)]
    [Parameter(Mandatory = $false)]
    [int]
    $memThreshold = 0,

    #farmSpec.data.lbSettings.lbMetricsSettings.diskQueueLengthThreshold
    [Parameter(Mandatory = $false)]
    [int]
    $diskQueueLengthThreshold = 0,

    #farmSpec.data.lbSettings.lbMetricsSettings.diskReadLatencyThreshold
    [Parameter(Mandatory = $false)]
    [int]
    $diskReadLatencyThreshold = 0,

    #farmSpec.data.lbSettings.lbMetricsSettings.diskWriteLatencyThreshold
    [Parameter(Mandatory = $false)]
    [int]
    $diskWriteLatencyThreshold = 0,

    #farmSpec.automatedfarmSpec.VirtualCenterProvisioningSettings.VirtualCenterProvisioningData.ComputeProfile
    [Parameter(Mandatory = $false)]
    [ValidateRange(1,[Int]::MaxValue)]
    [int]
    $NumCPU = 4,

    #farmSpec.automatedfarmSpec.VirtualCenterProvisioningSettings.VirtualCenterProvisioningData.ComputeProfile
    [Parameter(Mandatory = $false)]
    [ValidateRange(1,[Int]::MaxValue)]
    [int]
    $Ram = 16384,

    #farmSpec.automatedfarmSpec.VirtualCenterProvisioningSettings.VirtualCenterProvisioningData.ComputeProfile
    [Parameter(Mandatory = $false)]
    [ValidateRange(1,[Int]::MaxValue)]
    [int]
    $CoresPerSocket = 1,

    #farmSpec.automatedfarmSpec.virtualCenter if LINKED_CLONE, INSTANT_CLONE
    [Parameter(Mandatory = $false,ParameterSetName = "LINKED_CLONE")]
    [Parameter(Mandatory = $false,ParameterSetName = 'INSTANT_CLONE')]
    [string]
    $Vcenter,

    #farmSpec.automatedfarmSpec.virtualCenterProvisioningSettings.virtualCenterProvisioningData.parentVM if LINKED_CLONE, INSTANT_CLONE
    [Parameter(Mandatory = $true,ParameterSetName = "LINKED_CLONE")]
    [Parameter(Mandatory = $true,ParameterSetName = 'INSTANT_CLONE')]
    [string]
    $ParentVM,

    #farmSpec.automatedfarmSpec.virtualCenterProvisioningSettings.virtualCenterProvisioningData.snapshotVM if LINKED_CLONE, INSTANT_CLONE
    [Parameter(Mandatory = $true,ParameterSetName = "LINKED_CLONE")]
    [Parameter(Mandatory = $true,ParameterSetName = 'INSTANT_CLONE')]
    [string]
    $SnapshotVM,

    #farmSpec.automatedfarmSpec.virtualCenterProvisioningSettings.virtualCenterProvisioningData.vmFolder if LINKED_CLONE, INSTANT_CLONE
    [Parameter(Mandatory = $true,ParameterSetName = "LINKED_CLONE")]
    [Parameter(Mandatory = $true,ParameterSetName = 'INSTANT_CLONE')]
    [string]
    $VmFolder,

    #farmSpec.automatedfarmSpec.virtualCenterProvisioningSettings.virtualCenterProvisioningData.hostOrCluster if LINKED_CLONE, INSTANT_CLONE
    [Parameter(Mandatory = $true,ParameterSetName = "LINKED_CLONE")]
    [Parameter(Mandatory = $true,ParameterSetName = 'INSTANT_CLONE')]
    [string]
    $HostOrCluster,

    #farmSpec.automatedfarmSpec.virtualCenterProvisioningSettings.virtualCenterProvisioningData.resourcePool if LINKED_CLONE, INSTANT_CLONE
    [Parameter(Mandatory = $true,ParameterSetName = "LINKED_CLONE")]
    [Parameter(Mandatory = $true,ParameterSetName = 'INSTANT_CLONE')]
    [string]
    $ResourcePool,

    #farmSpec.automatedfarmSpec.virtualCenterProvisioningSettings.virtualCenterProvisioningData.dataCenter if LINKED_CLONE, INSTANT_CLONE
    [Parameter(Mandatory = $false,ParameterSetName = "LINKED_CLONE")]
    [Parameter(Mandatory = $false,ParameterSetName = 'INSTANT_CLONE')]
    [string]
    $dataCenter,

    #farmSpec.automatedfarmSpec.virtualCenterProvisioningSettings.virtualCenterStorageSettings.datastore if LINKED_CLONE, INSTANT_CLONE
    [Parameter(Mandatory = $true,ParameterSetName = "LINKED_CLONE")]
    [Parameter(Mandatory = $true,ParameterSetName = 'INSTANT_CLONE')]
    [string[]]
    $Datastores,

    #farmSpec.automatedfarmSpec.virtualCenterProvisioningSettings.virtualCenterStorageSettings.datastores.storageOvercommit if LINKED_CLONE, INSTANT_CLONE
    [Parameter(Mandatory = $false,ParameterSetName = "LINKED_CLONE")]
    [Parameter(Mandatory = $false,ParameterSetName = 'INSTANT_CLONE')]
    [string[]]
    $StorageOvercommit = $null,

    #farmSpec.automatedfarmSpec.virtualCenterProvisioningSettings.virtualCenterStorageSettings.useVSAN if LINKED_CLONE, INSTANT_CLONE
    [Parameter(Mandatory = $false,ParameterSetName = "LINKED_CLONE")]
    [Parameter(Mandatory = $false,ParameterSetName = 'INSTANT_CLONE')]
    [boolean]
    $UseVSAN = $false,

    #farmSpec.automatedfarmSpec.virtualCenterProvisioningSettings.enableProvsioning if LINKED_CLONE, INSTANT_CLONE
    [Parameter(Mandatory = $false,ParameterSetName = "LINKED_CLONE")]
    [Parameter(Mandatory = $false,ParameterSetName = 'INSTANT_CLONE')]
    [boolean]
    $EnableProvisioning = $true,

    #farmSpec.automatedfarmSpec.virtualCenterProvisioningSettings.stopProvisioningOnError if LINKED_CLONE, INSTANT_CLONE
    [Parameter(Mandatory = $false,ParameterSetName = "LINKED_CLONE")]
    [Parameter(Mandatory = $false,ParameterSetName = 'INSTANT_CLONE')]
    [boolean]
    $StopProvisioningOnError = $true,

    [Parameter(Mandatory = $false,ParameterSetName = "LINKED_CLONE")]
    [Parameter(Mandatory = $false,ParameterSetName = 'INSTANT_CLONE')]
    [string]
    $TransparentPageSharingScope = 'VM',

    #farmSpec.automatedfarmSpec.rdsServerNamingSpec.namingMethod if LINKED_CLONE, INSTANT_CLONE
    [Parameter(Mandatory = $false,ParameterSetName = "LINKED_CLONE")]
    [Parameter(Mandatory = $false,ParameterSetName = 'INSTANT_CLONE')]
    [ValidateSet('PATTERN')]
    [string]
    $NamingMethod = 'PATTERN',

    #farmSpec.automatedfarmSpec.rdsServerNamingSpec.patternNamingSettings.namingPattern if LINKED_CLONE, INSTANT_CLONE
    [Parameter(Mandatory = $false,ParameterSetName = "LINKED_CLONE")]
    [Parameter(Mandatory = $false,ParameterSetName = 'INSTANT_CLONE')]
    [Parameter(Mandatory = $false,ParameterSetName = 'JSON_FILE')]
    [string]
    $NamingPattern = $farmName + '{n:fixed=4}',

    #farmSpec.automatedfarmSpec.virtualCenterProvisioningSettings.minReadyVMsOnVComposerMaintenance if LINKED_CLONE, INSTANT_CLONE
    [Parameter(Mandatory = $false,ParameterSetName = "LINKED_CLONE")]
    [Parameter(Mandatory = $false,ParameterSetName = 'INSTANT_CLONE')]
    [int]
    $MinReady = 0,

    #farmSpec.automatedfarmSpec.rdsServerNamingSpec.patternNamingSettings.maxNumberOfRDSServers if LINKED_CLONE, INSTANT_CLONE
    [Parameter(Mandatory = $false,ParameterSetName = "LINKED_CLONE")]
    [Parameter(Mandatory = $false,ParameterSetName = 'INSTANT_CLONE')]
    [int]
    $MaximumCount = 1,

	#farmSpec.automatedfarmSpec.virtualCenterProvisioningSettings.virtualCenterStorageSettings.viewComposerStorageSettings.useSeparateDatastoresReplicaAndOSDisks if INSTANT_CLONE, LINKED_CLONE
    [Parameter(Mandatory = $false,ParameterSetName = "LINKED_CLONE")]
    [Parameter(Mandatory = $false,ParameterSetName = 'INSTANT_CLONE')]
    [boolean]
    $UseSeparateDatastoresReplicaAndOSDisks = $false,

    #farmSpec.automatedfarmSpec.virtualCenterProvisioningSettings.virtualCenterStorageSettings.viewComposerStorageSettings.replicaDiskDatastore, if LINKED_CLONE, INSTANT_CLONE
    [Parameter(Mandatory = $false,ParameterSetName = "LINKED_CLONE")]
    [Parameter(Mandatory = $false,ParameterSetName = 'INSTANT_CLONE')]
    [string]
    $ReplicaDiskDatastore,

    #farmSpec.automatedfarmSpec.virtualCenterProvisioningSettings.virtualCenterStorageSettings.viewComposerStorageSettings.useNativeSnapshots, if LINKED_CLONE, INSTANT_CLONE
    [Parameter(Mandatory = $false,ParameterSetName = "LINKED_CLONE")]
    [Parameter(Mandatory = $false,ParameterSetName = 'INSTANT_CLONE')]
    [boolean]
    $UseNativeSnapshots = $false,

    #farmSpec.automatedfarmSpec.virtualCenterProvisioningSettings.virtualCenterStorageSettings.viewComposerStorageSettings.spaceReclamationSettings.reclaimVmDiskSpace, if LINKED_CLONE, INSTANT_CLONE
    [Parameter(Mandatory = $false,ParameterSetName = "LINKED_CLONE")]
    [Parameter(Mandatory = $false,ParameterSetName = 'INSTANT_CLONE')]
    [boolean]
    $ReclaimVmDiskSpace = $false,

    #farmSpec.automatedfarmSpec.virtualCenterProvisioningSettings.virtualCenterStorageSettings.viewComposerStorageSettings.spaceReclamationSettings.reclamationThresholdGB
    [Parameter(Mandatory = $false,ParameterSetName = "LINKED_CLONE")]
    [ValidateRange(0,[Int]::MaxValue)]
    [int]
    $ReclamationThresholdGB = 1,

    #farmSpec.automatedfarmSpec.virtualCenterProvisioningSettings.virtualCenterStorageSettings.viewComposerStorageSettings.spaceReclamationSettings.blackoutTimes
    [Parameter(Mandatory = $false,ParameterSetName = "LINKED_CLONE")]
    [VMware.Hv.FarmBlackoutTime[]]
    $BlackoutTimes,

    #farmSpec.automatedfarmSpec.customizationSettings.adContainer if LINKED_CLONE, INSTANT_CLONE
    [Parameter(Mandatory = $false,ParameterSetName = 'LINKED_CLONE')]
    [Parameter(Mandatory = $false,ParameterSetName = "INSTANT_CLONE")]
    [string]
    $AdContainer = 'CN=Computers',

    #farmSpec.automatedfarmSpec.customizationSettings.domainAdministrator
    #farmSpec.automatedfarmSpec.customizationSettings.cloneprepCustomizationSettings.instantCloneEngineDomainAdministrator
    [Parameter(Mandatory = $true,ParameterSetName = 'LINKED_CLONE')]
    [Parameter(Mandatory = $true,ParameterSetName = 'INSTANT_CLONE')]
    [string]
    $NetBiosName,

    #farmSpec.automatedfarmSpec.customizationSettings.domainAdministrator
    #farmSpec.automatedfarmSpec.customizationSettings.cloneprepCustomizationSettings.instantCloneEngineDomainAdministrator
    [Parameter(Mandatory = $false,ParameterSetName = 'LINKED_CLONE')]
    [Parameter(Mandatory = $false,ParameterSetName = "INSTANT_CLONE")]
    [string]
    $DomainAdmin = $null,

    #farmSpec.automatedfarmSpec.customizationSettings.reusePreExistingAccounts
    [Parameter(Mandatory = $false,ParameterSetName = 'LINKED_CLONE')]
    [Parameter(Mandatory = $false,ParameterSetName = "INSTANT_CLONE")]
    [Boolean]
    $ReusePreExistingAccounts = $false,

    #farmSpec.automatedfarmSpec.customizationSettings.sysprepCustomizationSettings.customizationSpec if LINKED_CLONE
    [Parameter(Mandatory = $true,ParameterSetName = "LINKED_CLONE")]
    [string]
    $SysPrepName,

    #desktopSpec.automatedfarmSpec.customizationSettings.cloneprepCustomizationSettings.powerOffScriptName if INSTANT_CLONE
    [Parameter(Mandatory = $false,ParameterSetName = 'INSTANT_CLONE')]
    [string]
    $PowerOffScriptName,

    #farmSpec.automatedfarmSpec.customizationSettings.cloneprepCustomizationSettings.powerOffScriptParameters if INSTANT_CLONE
    [Parameter(Mandatory = $false,ParameterSetName = 'INSTANT_CLONE')]
    [string]
    $PowerOffScriptParameters,

    #farmSpec.automatedfarmSpec.customizationSettings.cloneprepCustomizationSettings.postSynchronizationScriptName if INSTANT_CLONE
    [Parameter(Mandatory = $false,ParameterSetName = 'INSTANT_CLONE')]
    [string]
    $PostSynchronizationScriptName,

    #farmSpec.automatedfarmSpec.customizationSettings.cloneprepCustomizationSettings.postSynchronizationScriptParameters if INSTANT_CLONE
    [Parameter(Mandatory = $false,ParameterSetName = 'INSTANT_CLONE')]
    [string]
    $PostSynchronizationScriptParameters,

    #farmSpec.automatedfarmSpec.rdsServerMaxSessionsData.maxSessionsType if LINKED_CLONE, INSTANT_CLONE
    [Parameter(Mandatory = $false,ParameterSetName = "LINKED_CLONE")]
    [Parameter(Mandatory = $false,ParameterSetName = "INSTANT_CLONE")]
    [ValidateSet("UNLIMITED", "LIMITED")]
    [string]
    $MaxSessionsType = "UNLIMITED",

    #farmSpec.automatedfarmSpec.rdsServerMaxSessionsData.maxSessionsType if LINKED_CLONE, INSTANT_CLONE
    [Parameter(Mandatory = $false,ParameterSetName = "LINKED_CLONE")]
    [Parameter(Mandatory = $false,ParameterSetName = "INSTANT_CLONE")]
    [ValidateRange(1, [int]::MaxValue)]
    [int]
    $MaxSessions,

    #farmSpec.manualfarmSpec.rdsServers
    [Parameter(Mandatory = $true,ParameterSetName = 'MANUAL')]
    [string[]]
    $RdsServers,

    [Parameter(Mandatory = $false,ParameterSetName = 'JSON_FILE')]
    [string]
    $Spec,

    [Parameter(Mandatory = $false)]
    $HvServer = $null

  )
  #
  # farmSpec/FarmInfo
  #   *farmData
  #        +AccessGroupId
  #		 +FarmSessionSettings
  #   FarmAutomatedfarmSpec/FarmAutomatedFarmData
  #        */+VirtualCenterId
  #        FarmRDSServerNamingSpec/FarmVirtualMachineNamingSettings
  #                FarmPatternNamingSpec/FarmPatternNamingSettings
  #        FarmVirtualCenterProvisioningSettings
  #                FarmVirtualCenterProvisioningData/virtualCenterProvisioningData
  #                FarmVirtualCenterStorageSettings
  #                FarmVirtualCenterNetworkingSettings
  #        FarmVirtualCenterManagedCommonSettings
  #        FarmCustomizationSettings
  #                ViewComposerDomainAdministratorId
  #                ADContainerId
  #                FarmSysprepCustomizationSettings
  #                      CustomizationSpecId
  #                FarmCloneprepCustomizationSettings
  #                      InstantCloneEngineDomainAdministratorId
  #
  #   FarmManualfarmSpec
  #        RDSServerId[]
  #

  begin {
    $services = Get-ViewAPIService -hvServer $hvServer
    if ($null -eq $services) {
      Write-Error "Could not retrieve ViewApi services from connection object"
      break
    }
  }

  process {
    $confirmFlag = Get-HVConfirmFlag -keys $PsBoundParameters.Keys
    if ($farmName) {
      try {
        $sourceFarm = Get-HVFarmSummary -farmName $farmName -hvServer $hvServer -suppressInfo $true
      } catch {
        Write-Error "Make sure Get-HVFarmSummary advanced function is loaded, $_"
        break
      }
      if ($sourceFarm) {
        Write-Error "Farm with name [$farmName] already exists"
        return
      }
    }
    $farm_service_helper = New-Object VMware.Hv.FarmService
    if ($spec) {
      try {
        $jsonObject = Get-JsonObject -specFile $spec
      } catch {
        Write-Error "Json file exception, $_"
        break
      }
      try {
        Test-HVFarmSpec -PoolObject $jsonObject
      } catch {
        Write-Error "Json object validation failed, $_"
        break
      }
      if ($jsonObject.type -eq 'AUTOMATED') {
        $farmType = 'AUTOMATED'
        $provisioningType = $jsonObject.ProvisioningType
        if ($null -ne $jsonObject.AutomatedFarmSpec.VirtualCenter) {
          $vCenter = $jsonObject.AutomatedFarmSpec.VirtualCenter
        }

        $netBiosName = $jsonObject.NetBiosName
        if (!$jsonObject.AutomatedFarmSpec.CustomizationSettings.AdContainer) {
          Write-Host "adContainer was empty using CN=Computers"
        } else {
          $AdContainer = $jsonObject.AutomatedFarmSpec.CustomizationSettings.AdContainer
        }

        #populate customization settings attributes based on the cutomizationType
        if ($jsonObject.AutomatedFarmSpec.ProvisioningType -eq "INSTANT_CLONE_ENGINE") {
          $InstantClone = $true
          if ($null -ne $jsonObject.AutomatedFarmSpec.CustomizationSettings.CloneprepCustomizationSettings) {
            $DomainAdmin = $jsonObject.AutomatedFarmSpec.CustomizationSettings.CloneprepCustomizationSettings.InstantCloneEngineDomainAdministrator
            $powerOffScriptName = $jsonObject.AutomatedFarmSpec.CustomizationSettings.CloneprepCustomizationSettings.PowerOffScriptName
            $powerOffScriptParameters = $jsonObject.AutomatedFarmSpec.CustomizationSettings.CloneprepCustomizationSettings.PowerOffScriptParameters
            $postSynchronizationScriptName = $jsonObject.AutomatedFarmSpec.CustomizationSettings.CloneprepCustomizationSettings.PostSynchronizationScriptName
            $postSynchronizationScriptParameters = $jsonObject.AutomatedFarmSpec.CustomizationSettings.CloneprepCustomizationSettings.PostSynchronizationScriptParameters
            $reusePreExistingAccounts = $jsonObject.AutomatedFarmSpec.CustomizationSettings.ReusePreExistingAccounts
          }
        } elseif ($jsonObject.AutomatedFarmSpec.ProvisioningType -eq "VIEW_COMPOSER") {
            $LinkedClone = $true
            $DomainAdmin = $jsonObject.AutomatedFarmSpec.CustomizationSettings.domainAdministrator
            $reusePreExistingAccounts = $jsonObject.AutomatedFarmSpec.CustomizationSettings.ReusePreExistingAccounts
            $sysPrepName = $jsonObject.AutomatedFarmSpec.CustomizationSettings.SysprepCustomizationSettings.CustomizationSpec
        }

        $namingMethod = $jsonObject.AutomatedFarmSpec.RdsServerNamingSpec.NamingMethod
        if ($NamingPattern -eq '{n:fixed=4}') {
          $namingPattern = $jsonObject.AutomatedFarmSpec.RdsServerNamingSpec.patternNamingSettings.namingPattern
        }
        $maximumCount = $jsonObject.AutomatedFarmSpec.RdsServerNamingSpec.patternNamingSettings.maxNumberOfRDSServers
        $enableProvisioning = $jsonObject.AutomatedFarmSpec.VirtualCenterProvisioningSettings.EnableProvisioning
        $stopProvisioningOnError = $jsonObject.AutomatedFarmSpec.VirtualCenterProvisioningSettings.StopProvisioningOnError
        $minReady = $jsonObject.AutomatedFarmSpec.VirtualCenterProvisioningSettings.MinReadyVMsOnVComposerMaintenance

        $transparentPageSharingScope = $jsonObject.AutomatedFarmSpec.virtualCenterManagedCommonSettings.TransparentPageSharingScope

        if ($null -ne $jsonObject.AutomatedFarmSpec.VirtualCenterProvisioningSettings.VirtualCenterProvisioningData.ParentVm) {
          $parentVM = $jsonObject.AutomatedFarmSpec.VirtualCenterProvisioningSettings.VirtualCenterProvisioningData.ParentVm
        }
        if ($null -ne $jsonObject.AutomatedFarmSpec.VirtualCenterProvisioningSettings.VirtualCenterProvisioningData.Snapshot) {
          $snapshotVM = $jsonObject.AutomatedFarmSpec.VirtualCenterProvisioningSettings.VirtualCenterProvisioningData.Snapshot
        }
        $vmFolder = $jsonObject.AutomatedFarmSpec.VirtualCenterProvisioningSettings.VirtualCenterProvisioningData.VmFolder
        $hostOrCluster = $jsonObject.AutomatedFarmSpec.VirtualCenterProvisioningSettings.VirtualCenterProvisioningData.HostOrCluster
        $resourcePool = $jsonObject.AutomatedFarmSpec.VirtualCenterProvisioningSettings.VirtualCenterProvisioningData.ResourcePool
        $dataStoreList = $jsonObject.AutomatedFarmSpec.VirtualCenterProvisioningSettings.VirtualCenterStorageSettings.Datastores

        foreach ($dtStore in $dataStoreList) {
          $datastores += $dtStore.Datastore
          $storageOvercommit += $dtStore.StorageOvercommit
        }
        $useVSan =  $jsonObject.AutomatedFarmSpec.VirtualCenterProvisioningSettings.virtualCenterStorageSettings.UseVSan

        ## ViewComposerStorageSettings for Linked-Clone farms
        if ($LinkedClone -or $InstantClone) {
          $useSeparateDatastoresReplicaAndOSDisks = $jsonObject.AutomatedFarmSpec.VirtualCenterProvisioningSettings.virtualCenterStorageSettings.ViewComposerStorageSettings.UseSeparateDatastoresReplicaAndOSDisks
          if ($useSeparateDatastoresReplicaAndOSDisks) {
            $replicaDiskDatastore = $jsonObject.AutomatedFarmSpec.VirtualCenterProvisioningSettings.virtualCenterStorageSettings.ViewComposerStorageSettings.ReplicaDiskDatastore
          }
          if ($LinkedClone) {
            #For Instant clone desktops, this setting can only be set to false
            $useNativeSnapshots = $jsonObject.AutomatedFarmSpec.VirtualCenterProvisioningSettings.virtualCenterStorageSettings.ViewComposerStorageSettings.UseNativeSnapshots
            $reclaimVmDiskSpace = $jsonObject.AutomatedFarmSpec.VirtualCenterProvisioningSettings.virtualCenterStorageSettings.ViewComposerStorageSettings.SpaceReclamationSettings.ReclaimVmDiskSpace
            if ($reclaimVmDiskSpace) {
                $ReclamationThresholdGB = $jsonObject.AutomatedFarmSpec.VirtualCenterProvisioningSettings.virtualCenterStorageSettings.ViewComposerStorageSettings.SpaceReclamationSettings.ReclamationThresholdGB
                if ($null -ne $jsonObject.AutomatedFarmSpec.VirtualCenterProvisioningSettings.virtualCenterStorageSettings.ViewComposerStorageSettings.SpaceReclamationSettings.blackoutTimes) {
                    $blackoutTimesList = $jsonObject.AutomatedFarmSpec.VirtualCenterProvisioningSettings.virtualCenterStorageSettings.ViewComposerStorageSettings.SpaceReclamationSettings.blackoutTimes
                    foreach ($blackout in $blackoutTimesList) {
                        $blackoutObj  = New-Object VMware.Hv.DesktopBlackoutTime
                        $blackoutObj.Days = $blackout.Days
                        $blackoutObj.StartTime = $blackout.StartTime
                        $blackoutObj.EndTime = $blackoutObj.EndTime
                        $blackoutTimes += $blackoutObj
                    }
                }
            }
          }
        }

        $maxSessionsType = $jsonObject.AutomatedFarmSpec.RdsServerMaxSessionsData.MaxSessionsType
        if ($maxSessionsType -eq "LIMITED") {
            $maxSessions = $jsonObject.AutomatedFarmSpec.RdsServerMaxSessionsData.MaxSessions
        }

      } elseif ($jsonObject.type -eq 'MANUAL') {
        $manual = $true
        $farmType = 'MANUAL'
        $RdsServersObjs = $jsonObject.ManualFarmSpec.RdsServers

        foreach ($RdsServerObj in $RdsServersObjs) {
          $rdsServers += $RdsServerObj.rdsServer
        }
      }
      $farmDisplayName = $jsonObject.Data.DisplayName
      $description = $jsonObject.Data.Description
      $accessGroup = $jsonObject.Data.AccessGroup
      if (! $FarmName) {
        $farmName = $jsonObject.Data.name
      }
      if ($null -ne $jsonObject.Data.Enabled) {
        $enable = $jsonObject.Data.Enabled
      }
      if ($null -ne $jsonObject.Data.Settings) {
        $disconnectedSessionTimeoutPolicy = $jsonObject.Data.Settings.DisconnectedSessionTimeoutPolicy
        $disconnectedSessionTimeoutMinutes = $jsonObject.Data.Settings.DisconnectedSessionTimeoutMinutes
        $emptySessionTimeoutPolicy = $jsonObject.Data.Settings.EmptySessionTimeoutPolicy
        $emptySessionTimeoutMinutes = $jsonObject.Data.Settings.EmptySessionTimeoutMinutes
        $logoffAfterTimeout = $jsonObject.Data.Settings.LogoffAfterTimeout
      }
      if ($null -ne $jsonObject.Data.DisplayProtocolSettings) {
        $defaultDisplayProtocol = $jsonObject.Data.DisplayProtocolSettings.DefaultDisplayProtocol
        $allowDisplayProtocolOverride = $jsonObject.Data.DisplayProtocolSettings.AllowDisplayProtocolOverride
        $enableHTMLAccess = $jsonObject.Data.DisplayProtocolSettings.EnableHTMLAccess
        $EnableCollaboration = $jsonObject.Data.DisplayProtocolSettings.EnableCollaboration

        if ($null -ne $jsonObject.Data.DisplayProtocolSettings.VGPUGridProfile) {
          $EnableGRIDvGPUs = $jsonObject.Data.DisplayProtocolSettings.EnableGRIDvGPUs
          $VGPUGridProfile = $jsonObject.Data.DisplayProtocolSettings.VGPUGridProfile
        }
      }
      if ($null -ne $jsonObject.Data.serverErrorThreshold) {
        $serverErrorThreshold = $jsonObject.Data.serverErrorThreshold
      }
      if ($null -ne $jsonObject.Data.MirageConfigurationOverrides) {
        $overrideGlobalSetting = $jsonObject.Data.MirageConfigurationOverrides.OverrideGlobalSetting
        $mirageserverEnabled = $jsonObject.Data.MirageConfigurationOverrides.Enabled
        $url = $jsonObject.Data.MirageConfigurationOverrides.url
      }
    }

    if ($linkedClone) {
      $farmType = 'AUTOMATED'
      $provisioningType = 'VIEW_COMPOSER'
    } elseif ($InstantClone) {
      $farmType = 'AUTOMATED'
      $provisioningType = 'INSTANT_CLONE_ENGINE'
    }elseif ($manual) {
      $farmType = 'MANUAL'
    }

    $script:farmSpecObj = Get-FarmSpec -farmType $farmType -provisioningType $provisioningType -namingMethod $namingMethod

    #
    # build out the infrastructure based on type of provisioning
    #
    $handleException = $false
    switch ($farmType) {

      'MANUAL' {
        try {
          $serverList = Get-RegisteredRDSServer -services $services -serverList $rdsServers
          $farmSpecObj.ManualFarmSpec.RdsServers = $serverList
        } catch {
          $handleException = $true
          Write-Error "Failed to create Farm with error: $_"
          break
        }
      }
      default {
        #
        # accumulate properties that are shared among various type
        #

        #
        # vCenter: if $vcenterID is defined, then this is a clone
        #           if the user specificed the name, then find it from the list
        #          if none specified, then automatically use the vCenter if there is only one
        #

        if (!$virtualCenterID) {
          $virtualCenterID = Get-VcenterID -services $services -vCenter $vCenter
        }

        if ($null -eq $virtualCenterID) {
          $handleException = $true
          break
        }

        #
        # transparentPageSharingScope
        #

        if (!$farmVirtualCenterManagedCommonSettings) {
          if ($farmSpecObj.AutomatedFarmSpec) {
            $farmSpecObj.AutomatedFarmSpec.virtualCenterManagedCommonSettings.TransparentPageSharingScope = $transparentPageSharingScope
          }
          $farmVirtualCenterManagedCommonSettings = $farmSpecObj.AutomatedFarmSpec.virtualCenterManagedCommonSettings
        }

        if ($farmSpecObj.AutomatedFarmSpec.RdsServerNamingSpec) {
          $farmSpecObj.AutomatedFarmSpec.RdsServerNamingSpec.NamingMethod = $namingMethod
          $farmSpecObj.AutomatedFarmSpec.RdsServerNamingSpec.patternNamingSettings.namingPattern = $namingPattern
          $farmSpecObj.AutomatedFarmSpec.RdsServerNamingSpec.patternNamingSettings.maxNumberOfRDSServers = $maximumCount
        } else {
          $vmNamingSpec = New-Object VMware.Hv.FarmRDSServerNamingSpec
          $vmNamingSpec.NamingMethod = $namingMethod
          $vmNamingSpec.patternNamingSettings = New-Object VMware.Hv.FarmPatternNamingSettings
          $vmNamingSpec.patternNamingSettings.namingPattern = $namingPattern
          $vmNamingSpec.patternNamingSettings.maxNumberOfRDSServers = $maximumCount
          $farmSpecObj.AutomatedFarmSpec.RdsServerNamingSpec = $vmNamingSpec
        }

        $farmSpecObj.AutomatedFarmSpec.VirtualCenterProvisioningSettings.VirtualCenterProvisioningData.ComputeProfile.NumCPU = $NumCPU
        $farmSpecObj.AutomatedFarmSpec.VirtualCenterProvisioningSettings.VirtualCenterProvisioningData.ComputeProfile.Ram = $Ram
        $farmSpecObj.AutomatedFarmSpec.VirtualCenterProvisioningSettings.VirtualCenterProvisioningData.ComputeProfile.CoresPerSocket = $CoresPerSocket

        #
        # build the VM LIST
        #
        try {
          $farmVirtualCenterProvisioningData = Get-HVFarmProvisioningData -vc $virtualCenterID -vmObject $farmVirtualCenterProvisioningData

          $HostOrCluster_helper = New-Object VMware.Hv.HostOrClusterService
          $hostClusterIds = (($HostOrCluster_helper.HostOrCluster_GetHostOrClusterTree($services, $farmVirtualCenterProvisioningData.datacenter)).treeContainer.children.info).Id
          $farmVirtualCenterStorageSettings = Get-HVFarmStorageObject -hostclusterIDs $hostClusterIds -storageObject $farmVirtualCenterStorageSettings
          $farmVirtualCenterNetworkingSettings = Get-HVFarmNetworkSetting -networkObject $farmVirtualCenterNetworkingSettings
          $farmCustomizationSettings = Get-HVFarmCustomizationSetting -vc $virtualCenterID -customObject $farmCustomizationSettings
        } catch {
          $handleException = $true
          Write-Error "Failed to create Farm with error: $_"
          break
        }

        $farmSpecObj.AutomatedFarmSpec.RdsServerMaxSessionsData.MaxSessionsType = $maxSessionsType
        if ($maxSessionsType -eq "LIMITED") {
            $farmSpecObj.AutomatedFarmSpec.RdsServerMaxSessionsData.MaxSessions = $maxSessions
        }
        $farmSpecObj.AutomatedFarmSpec.VirtualCenterProvisioningSettings.enableProvisioning = $enableProvisioning
        $farmSpecObj.AutomatedFarmSpec.VirtualCenterProvisioningSettings.stopProvisioningOnError = $stopProvisioningOnError
        $farmSpecObj.AutomatedFarmSpec.VirtualCenterProvisioningSettings.minReadyVMsOnVComposerMaintenance = $minReady
        $farmSpecObj.AutomatedFarmSpec.VirtualCenterProvisioningSettings.VirtualCenterProvisioningData = $farmVirtualCenterProvisioningData
        $farmSpecObj.AutomatedFarmSpec.VirtualCenterProvisioningSettings.VirtualCenterStorageSettings = $farmVirtualCenterStorageSettings
        $farmSpecObj.AutomatedFarmSpec.VirtualCenterProvisioningSettings.VirtualCenterNetworkingSettings = $FarmVirtualCenterNetworkingSettings

		$farmSpecObj.AutomatedFarmSpec.CustomizationSettings = $farmCustomizationSettings
        $farmSpecObj.AutomatedFarmSpec.ProvisioningType = $provisioningType
        $farmSpecObj.AutomatedFarmSpec.VirtualCenter = $virtualCenterID
      }
    }

    if ($handleException) {
      break
    }

    $farmData = $farmSpecObj.data
    $AccessGroup_service_helper = New-Object VMware.Hv.AccessGroupService
    $farmData.AccessGroup = Get-HVAccessGroupID $AccessGroup_service_helper.AccessGroup_List($services)

    $farmData.name = $farmName
    $farmData.DisplayName = $farmDisplayName
    $farmData.Description = $description
    if ($farmData.Settings) {
        $farmData.Settings.DisconnectedSessionTimeoutPolicy = $disconnectedSessionTimeoutPolicy
        if ($disconnectedSessionTimeoutPolicy -eq "AFTER") {
            $farmData.Settings.DisconnectedSessionTimeoutMinutes = $disconnectedSessionTimeoutMinutes
        }
        $farmData.Settings.EmptySessionTimeoutPolicy = $emptySessionTimeoutPolicy
        if ($emptySessionTimeoutPolicy -eq "AFTER") {
            $farmData.Settings.EmptySessionTimeoutMinutes = $emptySessionTimeoutMinutes
        }
        $logoffAfterTimeout = $farmData.Settings.logoffAfterTimeout
    }

    # Load Balancing
    if ($farmData.LbSettings) {
        If ($farmdata.LbSettings.LbMetricsSettings){
            $farmData.LbSettings.LbMetricsSettings.IncludeSessionCount = $includeSessionCount
            $farmData.LbSettings.LbMetricsSettings.CpuThreshold = $cpuThreshold
            $farmData.LbSettings.LbMetricsSettings.MemThreshold = $memThreshold
            $farmData.LbSettings.LbMetricsSettings.DiskQueueLengthThreshold = $diskQueueLengthThreshold
            $farmData.LbSettings.LbMetricsSettings.DiskReadLatencyThreshold = $diskReadLatencyThreshold
            $farmData.LbSettings.LbMetricsSettings.DiskWriteLatencyThreshold = $diskWriteLatencyThreshold
        }
    }

    if ($farmData.DisplayProtocolSettings) {
        $farmData.DisplayProtocolSettings.DefaultDisplayProtocol = $defaultDisplayProtocol
        $farmData.DisplayProtocolSettings.AllowDisplayProtocolOverride = $AllowDisplayProtocolOverride
        $farmData.DisplayProtocolSettings.EnableHTMLAccess = $enableHTMLAccess
        $farmData.DisplayProtocolSettings.EnableCollaboration = $EnableCollaboration
        if($VGPUGridProfile -ne $false){
          $farmData.DisplayProtocolSettings.EnableGRIDvGPUs = $EnableGRIDvGPUs
          $farmData.DisplayProtocolSettings.VGPUGridProfile = $VGPUGridProfile
        }
    }
    if ($farmData.MirageConfigurationOverrides){
        $farmData.MirageConfigurationOverrides.OverrideGlobalSetting = $overrideGlobalSetting
        $farmData.MirageConfigurationOverrides.Enabled = $mirageServerEnabled
        if ($url) {
            $farmData.MirageConfigurationOverrides.Url = $url
        }
    }
    $farmSpecObj.type = $farmType

    if ($FarmAutomatedFarmSpec) {
      $farmSpecObj.AutomatedFarmSpec = $FarmAutomatedFarmSpec
    }
    if ($FarmManualFarmSpec) {
      $farmSpecObj.ManualFarmSpec = $FarmManualFarmSpec
    }

    If ($DebugPreference -ne 'SilentlyContinue') {
      $myDebug = convertto-json -InputObject $farmSpecObj -depth 12
      $DebugOutput = "c:\temp\copiedfarm.json"
      $myDebug | Out-File -filepath $DebugOutput
      Write-Debug "Output Farm Spec to $DebugOutput."
    }

    if (!$confirmFlag -OR  $pscmdlet.ShouldProcess($farmSpecObj.data.name)) {
      $Id = $farm_service_helper.Farm_Create($services, $farmSpecObj)
    } else {
	  try {
        Test-HVFarmSpec -PoolObject $farmSpecObj
      } catch {
        Write-Error "FarmSpec object validation failed, $_"
		break
      }
	}
    return $farmSpecObj
  }

  end {
    [System.gc]::collect()
  }

}

function Test-HVFarmSpec {
  param(
    [Parameter(Mandatory = $true)]
    $PoolObject
  )
  if ($null -eq $PoolObject.Type) {
    Throw "Specify type of farm"
  }
  $jsonFarmTypeArray = @('AUTOMATED','MANUAL')
  if (! ($jsonFarmTypeArray -contains $PoolObject.Type)) {
    Throw "Farm type must be AUTOMATED or MANUAL"
  }
  if ($null -eq $PoolObject.Data.Name) {
    Throw "Specify farm name"
  }
  if ($null -eq $PoolObject.Data.AccessGroup) {
    Throw "Specify horizon access group"
  }
  if ($PoolObject.Type -eq "AUTOMATED"){
    $jsonProvisioningType = $PoolObject.AutomatedFarmSpec.ProvisioningType
    if ($null -eq $jsonProvisioningType) {
        Throw "Must specify provisioningType"
    }
    if ($null -eq $PoolObject.AutomatedFarmSpec.RdsServerNamingSpec.namingMethod) {
        Throw "Must specify naming method to PATTERN"
    }
    if ($null -eq  $PoolObject.AutomatedFarmSpec.RdsServerNamingSpec.patternNamingSettings) {
        Throw "Specify Naming pattern settings"
    }
    if ($null -eq $PoolObject.AutomatedFarmSpec.RdsServerNamingSpec.patternNamingSettings.namingPattern) {
        Throw "Specify specified naming pattern"
    }
    if ($null -eq $PoolObject.AutomatedFarmSpec.virtualCenterProvisioningSettings.enableProvisioning) {
        Throw "Specify Whether to enable provisioning or not"
    }
    if ($null -eq $PoolObject.AutomatedFarmSpec.virtualCenterProvisioningSettings.stopProvisioningOnError) {
        Throw "Specify Whether provisioning on all VMs stops on error"
    }
    $jsonTemplate = $PoolObject.AutomatedFarmSpec.VirtualCenterProvisioningSettings.virtualCenterProvisioningData.Template
    $jsonParentVm = $PoolObject.AutomatedFarmSpec.VirtualCenterProvisioningSettings.virtualCenterProvisioningData.ParentVm
    $jsonSnapshot = $PoolObject.AutomatedFarmSpec.VirtualCenterProvisioningSettings.virtualCenterProvisioningData.Snapshot
    $jsonVmFolder = $PoolObject.AutomatedFarmSpec.VirtualCenterProvisioningSettings.virtualCenterProvisioningData.VmFolder
    $jsonHostOrCluster = $PoolObject.AutomatedFarmSpec.VirtualCenterProvisioningSettings.virtualCenterProvisioningData.HostOrCluster
    $ResourcePool = $PoolObject.AutomatedFarmSpec.VirtualCenterProvisioningSettings.virtualCenterProvisioningData.ResourcePool
    if (!( ($null -ne $jsonTemplate) -or (($null -ne $jsonParentVm) -and ($null -ne $jsonSnapshot) )) ) {
       Throw "Must specify Template or (ParentVm and Snapshot) names"
    }
    if ($null -eq $jsonVmFolder) {
       Throw "Must specify VM folder to deploy the VMs"
    }
    if ($null -eq $jsonHostOrCluster) {
       Throw "Must specify Host or cluster to deploy the VMs"
    }
    if ($null -eq $resourcePool) {
       Throw "Must specify Resource pool to deploy the VMs"
    }
    if ($null -eq $PoolObject.AutomatedFarmSpec.VirtualCenterProvisioningSettings.VirtualCenterStorageSettings.Datastores) {
       Throw "Must specify datastores names"
    }
    if ($null -eq $PoolObject.AutomatedFarmSpec.VirtualCenterProvisioningSettings.VirtualCenterStorageSettings.useVSan) {
       Throw "Must specify whether to use virtual SAN or not"
    }
    $customizationType = $PoolObject.AutomatedFarmSpec.CustomizationSettings.customizationType
    if ($null -eq $customizationType) {
        Throw "Specify customization type"
    }
    if ($customizationType -eq 'SYS_PREP' -and $null -eq $PoolObject.AutomatedFarmSpec.CustomizationSettings.SysprepCustomizationSettings) {
        Throw "Specify sysPrep customization settings"
    }
    if ($customizationType -eq 'CLONE_PREP' -and $null -eq $PoolObject.AutomatedFarmSpec.CustomizationSettings.CloneprepCustomizationSettings) {
        Throw "Specify clone customization settings"
    }
    if ($null -eq $PoolObject.AutomatedFarmSpec.RdsServerMaxSessionsData.MaxSessionsType) {
        Throw "Specify MaxSessionsType"
    }
  } elseif ($PoolObject.Type -eq "MANUAL") {
    if ($null -eq $PoolObject.manualFarmSpec.rdsServers) {
        Throw "Specify rdsServers name"
    }
  }
}

function Get-HVFarmProvisioningData {
  param(
    [Parameter(Mandatory = $false)]
    [VMware.Hv.FarmVirtualCenterProvisioningData]$VmObject,

    [Parameter(Mandatory = $true)]
    [VMware.Hv.VirtualCenterId]$VcID
  )
  if (!$vmObject) {
    $vmObject = $farmSpecObj.AutomatedFarmSpec.VirtualCenterProvisioningSettings.VirtualCenterProvisioningData
  }
  if ($parentVM) {
    $parentList = Get-HVBaseImageVmList -vcID $vcID
    $parentVMObj = $parentList | Where-Object { $_.name -eq $parentVM }
    if ($null -eq $parentVMObj) {
      throw "No Parent VM found with name: [$parentVM]"
    }
    $vmObject.ParentVm = $parentVMObj.id
    $dataCenterID = $parentVMObj.datacenter
    if ($dataCenter -and $dataCenterID) {
        $baseImageVmInfo = $base_imageVm_helper.BaseImageVm_ListByDatacenter($dataCenterID)
        if (! ($baseImageVmInfo.Path -like "/$dataCenter/*")) {
            throw "$parentVM not exists in datacenter: [$dataCenter]"
        }
    }
    $vmObject.datacenter = $dataCenterID
  }
  if ($snapshotVM) {
    $BaseImageSnapshot_service_helper = New-Object VMware.Hv.BaseImageSnapshotService
    $snapshotList = $BaseImageSnapshot_service_helper.BaseImageSnapshot_List($services, $parentVMObj.id)
    $snapshotVMObj = $snapshotList | Where-Object { $_.name -eq $snapshotVM }
    if ($null -eq $snapshotVMObj) {
      throw "No Snapshot found with name: [$snapshotVM] for VM name: [$parentVM] "
    }
    $vmObject.Snapshot = $snapshotVMObj.id
  }
  if ($vmFolder) {
    $VmFolder_service_helper = New-Object VMware.Hv.VmFolderService
    $folders = $VmFolder_service_helper.VmFolder_GetVmFolderTree($services, $vmObject.datacenter)
    $folderList = @()
    $folderList += $folders
    while ($folderList.Length -gt 0) {
      $item = $folderList[0]
      if ($item -and !$_.folderdata.incompatiblereasons.inuse -and !$_.folderdata.incompatiblereasons.viewcomposerreplicafolder -and ($item.folderdata.name -eq $vmFolder)) {
        $vmObject.VmFolder = $item.id
        break
      }
      foreach ($folderItem in $item.children) {
        $folderList += $folderItem
      }
      $folderList = $folderList[1..$folderList.Length]
    }
    if ($null -eq $vmObject.VmFolder) {
      throw "No VM Folder found with name: [$vmFolder]"
    }
  }
  if ($hostOrCluster) {
    $HostOrCluster_service_helper = New-Object VMware.Hv.HostOrClusterService
    $vmObject.HostOrCluster = Get-HVHostOrClusterID $HostOrCluster_service_helper.HostOrCluster_GetHostOrClusterTree($services,$vmobject.datacenter)
    if ($null -eq $vmObject.HostOrCluster) {
      throw "No hostOrCluster found with Name: [$hostOrCluster]"
    }
  }
  if ($resourcePool) {
    $ResourcePool_service_helper = New-Object VMware.Hv.ResourcePoolService
    $vmObject.ResourcePool = Get-HVResourcePoolID $ResourcePool_service_helper.ResourcePool_GetResourcePoolTree($services,$vmobject.HostOrCluster)
    if ($null -eq $vmObject.ResourcePool) {
      throw "No Resource Pool found with Name: [$resourcePool]"
    }
  }
  return $vmObject
}

function Get-HVFarmStorageObject {
  param(

    [Parameter(Mandatory = $true)]
    [VMware.Hv.HostOrClusterId[]]$HostClusterIDs,

	[Parameter(Mandatory = $false)]
    [VMware.Hv.FarmVirtualCenterStorageSettings]$StorageObject
  )
  if (!$storageObject) {
    $storageObject = New-Object VMware.Hv.FarmVirtualCenterStorageSettings

    $FarmSpaceReclamationSettings = New-Object VMware.Hv.FarmSpaceReclamationSettings -Property @{ 'reclaimVmDiskSpace' = $false }
    if ($reclaimVmDiskSpace) {
        $FarmSpaceReclamationSettings.ReclamationThresholdGB = $reclamationThresholdGB
        if ($blackoutTimes) {
          $FarmSpaceReclamationSettings.BlackoutTimes = $blackoutTimes
        }
    }

    $FarmViewComposerStorageSettingsList = @{
      'useSeparateDatastoresReplicaAndOSDisks' = $UseSeparateDatastoresReplicaAndOSDisks;
      'useNativeSnapshots' = $useNativeSnapshots;
      'spaceReclamationSettings' = $FarmSpaceReclamationSettings;
    }

    $storageObject.ViewComposerStorageSettings = New-Object VMware.Hv.FarmViewComposerStorageSettings -Property $FarmViewComposerStorageSettingsList
  }

  if ($datastores) {
    if ($StorageOvercommit -and  ($datastores.Length -ne  $StorageOvercommit.Length) ) {
        throw "Parameters datastores length: [$datastores.Length] and StorageOvercommit length: [$StorageOvercommit.Length] should be of same size"
    }
    $Datastore_service_helper = New-Object VMware.Hv.DatastoreService
    foreach ($hostClusterID in $hostClusterIDs) {
        $datastoreList += $Datastore_service_helper.Datastore_ListDatastoresByHostOrCluster($services, $hostClusterID)
    }
    $datastoresSelected = @()
    foreach ($ds in $datastores) {
      $datastoresSelected += ($datastoreList | Where-Object { $_.datastoredata.name -eq $ds }).id
    }
    if (! $storageOvercommit) {
      foreach ($ds in $datastoresSelected) {
        $storageOvercommit += ,'UNBOUNDED'
      }
    }
    $StorageOvercommitCnt = 0
    foreach ($ds in $datastoresSelected) {
      $datastoresObj = New-Object VMware.Hv.FarmVirtualCenterDatastoreSettings
      $datastoresObj.Datastore = $ds
      $datastoresObj.StorageOvercommit =  $storageOvercommit[$StorageOvercommitCnt]
      $StorageObject.Datastores += $datastoresObj
    }
    if ($useSeparateDatastoresReplicaAndOSDisks) {
        $StorageObject.ViewComposerStorageSettings.UseSeparateDatastoresReplicaAndOSDisks = $UseSeparateDatastoresReplicaAndOSDisks
        $FarmReplicaDiskDatastore = ($datastoreList | Where-Object { $_.datastoredata.name -eq $replicaDiskDatastore }).id
        $StorageObject.ViewComposerStorageSettings.ReplicaDiskDatastore = $FarmReplicaDiskDatastore
    }

  }
  if ($storageObject.Datastores.Count -eq 0) {
    throw "No datastores found with name: [$datastores]"
  }
  if ($useVSAN) { $storageObject.useVSAN = $useVSAN }
  return $storageObject
}

function Get-HVFarmNetworkSetting {
  param(
    [Parameter(Mandatory = $false)]
    [VMware.Hv.FarmVirtualCenterNetworkingSettings]$NetworkObject
  )
  if (!$networkObject) {
    $networkObject = $farmSpecObj.AutomatedFarmSpec.VirtualCenterProvisioningSettings.VirtualCenterNetworkingSettings
  }
  return $networkObject
}

function Get-HVFarmCustomizationSetting {
  param(
    [Parameter(Mandatory = $false)]
    [VMware.Hv.FarmCustomizationSettings]$CustomObject,

    [Parameter(Mandatory = $true)]
    [VMware.Hv.VirtualCenterId]$VcID
  )
  if (!$customObject) {
    # View Composer and Instant Clone Engine Active Directory container for QuickPrep and ClonePrep. This must be set for Instant Clone Engine or SVI sourced desktops.
    if ($InstantClone -or $LinkedClone) {
        $ad_domain_helper = New-Object VMware.Hv.ADDomainService
        $ADDomains = $ad_domain_helper.ADDomain_List($services)
        if ($netBiosName) {
          $adDomianId = ($ADDomains | Where-Object { $_.NetBiosName -eq $netBiosName } | Select-Object -Property id)
          if ($null -eq $adDomianId) {
            throw "No Domain found with netBiosName: [$netBiosName]"
          }
        } else {
          $adDomianId = ($ADDomains[0] | Select-Object -Property id)
          if ($null -eq $adDomianId) {
            throw "No Domain configured in view administrator UI"
          }
        }
        $ad_container_helper = New-Object VMware.Hv.AdContainerService
        $adContainerId = ($ad_container_helper.ADContainer_ListByDomain($services,$adDomianId.id) | Where-Object { $_.Rdn -eq $adContainer } | Select-Object -Property id).id
        if ($null -eq $adContainerId) {
          throw "No AdContainer found with name: [$adContainer]"
        }
        $farmSpecObj.AutomatedFarmSpec.CustomizationSettings.AdContainer = $adContainerId
    }

    if ($InstantClone) {
      $farmSpecObj.AutomatedFarmSpec.CustomizationSettings.CustomizationType = 'CLONE_PREP'
      $instantCloneEngineDomainAdministrator_helper = New-Object VMware.Hv.InstantCloneEngineDomainAdministratorService
      $insDomainAdministrators = $instantCloneEngineDomainAdministrator_helper.InstantCloneEngineDomainAdministrator_List($services)
      $strFilterSet = @()
      if (![string]::IsNullOrWhitespace($netBiosName)) {
        $strFilterSet += '$_.namesData.dnsName -match $netBiosName'
      }
      if (![string]::IsNullOrWhitespace($domainAdmin)) {
        $strFilterSet += '$_.base.userName -eq $domainAdmin'
      }
      $whereClause =  [string]::Join(' -and ', $strFilterSet)
      $scriptBlock = [Scriptblock]::Create($whereClause)
      $instantCloneEngineDomainAdministrator = $insDomainAdministrators | Where-Object $scriptBlock
      If ($null -ne $instantCloneEngineDomainAdministrator) {
        $instantCloneEngineDomainAdministrator = $instantCloneEngineDomainAdministrator[0].id
      } elseif ($null -ne  $insDomainAdministrators) {
        $instantCloneEngineDomainAdministrator = $insDomainAdministrators[0].id
      }
      if ($null -eq $instantCloneEngineDomainAdministrator) {
        throw "No Instant Clone Engine Domain Administrator found with netBiosName: [$netBiosName]"
      }
      $farmSpecObj.AutomatedFarmSpec.CustomizationSettings.CloneprepCustomizationSettings = New-Object VMware.Hv.FarmClonePrepCustomizationSettings
      $farmSpecObj.AutomatedFarmSpec.CustomizationSettings.CloneprepCustomizationSettings.InstantCloneEngineDomainAdministrator = $instantCloneEngineDomainAdministrator
      $farmSpecObj.AutomatedFarmSpec.CustomizationSettings.CloneprepCustomizationSettings.powerOffScriptName = $powerOffScriptName
      $farmSpecObj.AutomatedFarmSpec.CustomizationSettings.CloneprepCustomizationSettings.powerOffScriptParameters = $powerOffScriptParameters
      $farmSpecObj.AutomatedFarmSpec.CustomizationSettings.CloneprepCustomizationSettings.postSynchronizationScriptName = $postSynchronizationScriptName
      $farmSpecObj.AutomatedFarmSpec.CustomizationSettings.CloneprepCustomizationSettings.postSynchronizationScriptParameters = $postSynchronizationScriptParameters
      $farmSpecObj.AutomatedFarmSpec.CustomizationSettings.ReusePreExistingAccounts = $reusePreExistingAccounts
      $customObject = $farmSpecObj.AutomatedFarmSpec.CustomizationSettings
    } elseif ($LinkedClone) {
      $ViewComposerDomainAdministrator_service_helper = New-Object VMware.Hv.ViewComposerDomainAdministratorService
      $lcDomainAdministrators = $ViewComposerDomainAdministrator_service_helper.ViewComposerDomainAdministrator_List($services, $vcID)
      $strFilterSet = @()
      if (![string]::IsNullOrWhitespace($netBiosName)) {
        $strFilterSet += '$_.base.domain -match $netBiosName'
      }
      if (![string]::IsNullOrWhitespace($domainAdmin)) {
        $strFilterSet += '$_.base.userName -ieq $domainAdmin'
      }
      $whereClause =  [string]::Join(' -and ', $strFilterSet)
      $scriptBlock = [Scriptblock]::Create($whereClause)
      $ViewComposerDomainAdministratorID = $lcDomainAdministrators | Where-Object $scriptBlock
      if ($null -ne $ViewComposerDomainAdministratorID) {
        $ViewComposerDomainAdministratorID = $ViewComposerDomainAdministratorID[0].id
      } elseif ($null -ne $lcDomainAdministrators) {
        $ViewComposerDomainAdministratorID = $lcDomainAdministrators[0].id
      }
      if ($null -eq $ViewComposerDomainAdministratorID) {
        throw "No Composer Domain Administrator found with netBiosName: [$netBiosName]"
      }

      #Support only Sysprep Customization
      $farmSpecObj.AutomatedFarmSpec.CustomizationSettings.SysprepCustomizationSettings = New-Object VMware.Hv.FarmSysprepCustomizationSettings
      $sysprepCustomizationSettings = $farmSpecObj.AutomatedFarmSpec.CustomizationSettings.SysprepCustomizationSettings

      # Get SysPrep CustomizationSpec ID
      $CustomizationSpec_service_helper = New-Object VMware.Hv.CustomizationSpecService
      $sysPrepIds = $CustomizationSpec_service_helper.CustomizationSpec_List($services, $vcID) | Where-Object { $_.customizationSpecData.name -eq $sysPrepName } | Select-Object -Property id
      if ($sysPrepIds.Count -eq 0) {
        throw "No Sysprep Customization spec found with Name: [$sysPrepName]"
      }
      $sysprepCustomizationSettings.CustomizationSpec = $sysPrepIds[0].id

      $farmSpecObj.AutomatedFarmSpec.CustomizationSettings.CustomizationType = 'SYS_PREP'
      $farmSpecObj.AutomatedFarmSpec.CustomizationSettings.DomainAdministrator = $ViewComposerDomainAdministratorID
      $farmSpecObj.AutomatedFarmSpec.CustomizationSettings.ReusePreExistingAccounts = $reusePreExistingAccounts
      $farmSpecObj.AutomatedFarmSpec.CustomizationSettings.SysprepCustomizationSettings = $sysprepCustomizationSettings
      $customObject = $farmSpecObj.AutomatedFarmSpec.CustomizationSettings
    }
  }
  return $customObject
}

function Get-FarmSpec {
  param(
    [Parameter(Mandatory = $true)]
    [string]$FarmType,

    [Parameter(Mandatory = $false)]
    [string]$ProvisioningType,

    [Parameter(Mandatory = $false)]
    [string]$NamingMethod
  )

  $farm_helper = New-Object VMware.Hv.FarmService
  $farm_spec_helper = $farm_helper.getFarmSpecHelper()
  $farm_spec_helper.setType($farmType)
  if ($farmType -eq 'AUTOMATED') {
    $farm_spec_helper.getDataObject().AutomatedFarmSpec.RdsServerNamingSpec.PatternNamingSettings = $farm_helper.getFarmPatternNamingSettingsHelper().getDataObject()
    $farm_spec_helper.getDataObject().AutomatedFarmSpec.VirtualCenterProvisioningSettings.VirtualCenterStorageSettings.ViewComposerStorageSettings = $farm_helper.getFarmViewComposerStorageSettingsHelper().getDataObject()
    $farm_spec_helper.getDataObject().AutomatedFarmSpec.VirtualCenterProvisioningSettings.VirtualCenterProvisioningData.ComputeProfile = $farm_helper.getFarmComputeProfileSpecHelper().getDataObject()
  }
  $farm_spec_helper.getDataObject().Data.Settings = $farm_helper.getFarmSessionSettingsHelper().getDataObject()
  $farm_spec_helper.getDataObject().Data.LbSettings = $farm_helper.getRDSHLoadBalancingSettingsHelper().getDataObject()
  $farm_spec_helper.getDataObject().Data.LbSettings.LbMetricsSettings = $farm_helper.getRDSHLoadBalancingMetricsSettingsHelper().getDataObject()
  $farm_spec_helper.getDataObject().Data.DisplayProtocolSettings = $farm_helper.getFarmDisplayProtocolSettingsHelper().getDataObject()
  $farm_spec_helper.getDataObject().Data.MirageConfigurationOverrides = $farm_helper.getFarmMirageConfigurationOverridesHelper( ).getDataObject()
  return $farm_spec_helper.getDataObject()
}

function New-HVPool {
<#
.Synopsis
   Creates new desktop pool.

.DESCRIPTION
   Creates new desktop pool, the type and user assignment type would be
   determined based on input parameters.

.PARAMETER InstantClone
   Switch to Create Instant Clone pool.

.PARAMETER LinkedClone
   Switch to Create Linked Clone pool.

.PARAMETER FullClone
   Switch to Create Full Clone pool.

.PARAMETER Manual
   Switch to Create Manual Clone pool.

.PARAMETER Rds
   Switch to Create RDS pool.

.PARAMETER PoolName
   Name of the pool.

.PARAMETER PoolDisplayName
   Display name of pool.

.PARAMETER Description
   Description of pool.

.PARAMETER AccessGroup
   View access group can organize the desktops in the pool.
   Default Value is 'Root'.

.PARAMETER GlobalEntitlement
   Description of pool.
   Global entitlement to associate the pool.

.PARAMETER UserAssignment
    User Assignment type of pool.
    Set to DEDICATED for dedicated desktop pool.
    Set to FLOATING for floating desktop pool.

.PARAMETER AutomaticAssignment
    Automatic assignment of a user the first time they access the machine.
    Applicable to dedicated desktop pool.

.PARAMETER Enable
    Set true to enable the pool otherwise set to false.

.PARAMETER ConnectionServerRestrictions
    Connection server restrictions.
    This is a list of tags that access to the desktop is restricted to.
    No list means that the desktop can be accessed from any connection server.

.PARAMETER PowerPolicy
    Power policy for the machines in the desktop after logoff.
	This setting is only relevant for managed machines

.PARAMETER AutomaticLogoffPolicy
    Automatically log-off policy after disconnect.
	This property has a default value of "NEVER".

.PARAMETER AutomaticLogoffMinutes
    The timeout in minutes for automatic log-off after disconnect.
	This property is required if automaticLogoffPolicy is set to "AFTER".

.PARAMETER AllowUsersToResetMachines
    Whether users are allowed to reset/restart their machines.

.PARAMETER AllowMultipleSessionsPerUser
    Whether multiple sessions are allowed per user in case of Floating User Assignment.

.PARAMETER DeleteOrRefreshMachineAfterLogoff
	Whether machines are to be deleted or refreshed after logoff in case of Floating User Assignment.

.PARAMETER RefreshOsDiskAfterLogoff
	Whether and when to refresh the OS disks for dedicated-assignment, linked-clone machines.

.PARAMETER RefreshPeriodDaysForReplicaOsDisk
    Regular interval at which to refresh the OS disk.

.PARAMETER RefreshThresholdPercentageForReplicaOsDisk
	With the 'AT_SIZE' option for refreshOsDiskAfterLogoff, the size of the linked clone's OS disk in the datastore is compared to its maximum allowable size.

.PARAMETER SupportedDisplayProtocols
	The list of supported display protocols for the desktop.

.PARAMETER DefaultDisplayProtocol
    The default display protocol for the desktop. For a managed desktop, this will default to "PCOIP". For an unmanaged desktop, this will default to "RDP".

.PARAMETER AllowUsersToChooseProtocol
    Whether the users can choose the protocol.

.PARAMETER Renderer3D
    Specify 3D rendering dependent types hardware, software, vsphere client etc.

.PARAMETER EnableGRIDvGPUs
    Whether GRIDvGPUs enabled or not

.PARAMETER VRamSizeMB
    VRAM size for View managed 3D rendering. More VRAM can improve 3D performance.

.PARAMETER MaxNumberOfMonitors
    The greater these values are, the more memory will be consumed on the associated ESX hosts

.PARAMETER MaxResolutionOfAnyOneMonitor
    The greater these values are, the more memory will be consumed on the associated ESX hosts.

.PARAMETER EnableHTMLAccess
    HTML Access, enabled by VMware Blast technology, allows users to connect to View machines from Web browsers.

.PARAMETER Quality
    This setting determines the image quality that the flash movie will render. Lower quality results in less bandwidth usage.

.PARAMETER Throttling
    This setting affects the frame rate of the flash movie. If enabled, the frames per second will be reduced based on the aggressiveness level.

.PARAMETER OverrideGlobalSetting
    Mirage configuration specified here will be used for this Desktop

.PARAMETER Enabled
	Whether a Mirage server is enabled.

.PARAMETER Url
    The URL of the Mirage server. This should be in the form "<(DNS name)|(IPv4)|(IPv6)><:(port)>". IPv6 addresses must be enclosed in square brackets.

.PARAMETER Vcenter
    Virtual Center server-address (IP or FQDN) where the pool virtual machines are located. This should be same as provided to the Connection Server while adding the vCenter server.

.PARAMETER Template
    Virtual machine Template name to clone Virtual machines.
    Applicable only to Full Clone pools.

.PARAMETER ParentVM
    Parent Virtual Machine to clone Virtual machines.
    Applicable only to Linked Clone and Instant Clone pools.

.PARAMETER SnapshotVM
    Base image VM for Linked Clone pool and current Image for Instant Clone Pool.

.PARAMETER VmFolder
    VM folder to deploy the VMs to.
    Applicable to Full, Linked, Instant Clone Pools.

.PARAMETER HostOrCluster
    Host or cluster to deploy the VMs in.
    Applicable to Full, Linked, Instant Clone Pools.

.PARAMETER ResourcePool
    Resource pool to deploy the VMs.
    Applicable to Full, Linked, Instant Clone Pools.

.PARAMETER Datastores
    Datastore names to store the VM
    Applicable to Full, Linked, Instant Clone Pools.

.PARAMETER StorageOvercommit
    Storage overcommit determines how View places new VMs on the selected datastores.
    Supported values are 'UNBOUNDED','AGGRESSIVE','MODERATE','CONSERVATIVE','NONE' and are case sensitive.

.PARAMETER UseVSAN
    Whether to use vSphere VSAN. This is applicable for vSphere 5.5 or later.
    Applicable to Full, Linked, Instant Clone Pools.

.PARAMETER UseSeparateDatastoresReplicaAndOSDisks
    Whether to use separate datastores for replica and OS disks.

.PARAMETER ReplicaDiskDatastore
    Datastore to store replica disks for View Composer and Instant clone engine sourced machines.

.PARAMETER UseNativeSnapshots
    Native NFS Snapshots is a hardware feature, specify whether to use or not

.PARAMETER ReclaimVmDiskSpace
    virtual machines can be configured to use a space efficient disk format that supports reclamation of unused disk space.

.PARAMETER ReclamationThresholdGB
    Initiate reclamation when unused space on VM exceeds the threshold.

.PARAMETER RedirectWindowsProfile
    Windows profiles will be redirected to persistent disks, which are not affected by View Composer operations such as refresh, recompose and rebalance.

.PARAMETER UseSeparateDatastoresPersistentAndOSDisks
    Whether to use separate datastores for persistent and OS disks. This must be false if redirectWindowsProfile is false.

.PARAMETER PersistentDiskDatastores
    Name of the Persistent disk datastore

.PARAMETER PersistentDiskStorageOvercommit
    Storage overcommit determines how view places new VMs on the selected datastores.
    Supported values are 'UNBOUNDED','AGGRESSIVE','MODERATE','CONSERVATIVE','NONE' and are case sensitive.

.PARAMETER DiskSizeMB
    Size of the persistent disk in MB.

.PARAMETER DiskDriveLetter
    Persistent disk drive letter.

.PARAMETER RedirectDisposableFiles
    Redirect disposable files to a non-persistent disk that will be deleted automatically when a user's session ends.

.PARAMETER NonPersistentDiskSizeMB
    Size of the non persistent disk in MB.

.PARAMETER NonPersistentDiskDriveLetter
    Non persistent disk drive letter.

.PARAMETER UseViewStorageAccelerator
    Whether to use View Storage Accelerator.

.PARAMETER ViewComposerDiskTypes
    Disk types to enable for the View Storage Accelerator feature.

.PARAMETER RegenerateViewStorageAcceleratorDays
    How often to regenerate the View Storage Accelerator cache.

.PARAMETER BlackoutTimes
    A list of blackout times.

.PARAMETER StopProvisioningOnError
    Set to true to stop provisioning of all VMs on error.
    Applicable to Full, Linked, Instant Clone Pools.

.PARAMETER TransparentPageSharingScope
    The transparent page sharing scope.
    The default value is 'VM'.

.PARAMETER NamingMethod
    Determines how the VMs in the desktop are named.
    Set SPECIFIED to use specific name.
    Set PATTERN to use naming pattern.
    The default value is PATTERN. For Instant Clone pool the value must be PATTERN.

.PARAMETER NamingPattern
    Virtual machines will be named according to the specified naming pattern.
    Value would be considered only when $namingMethod = PATTERN.
    The default value is poolName + '{n:fixed=4}'.

.PARAMETER MinReady
    Minimum number of ready (provisioned) machines during View Composer maintenance operations.
    The default value is 0.
    Applicable to Linked Clone Pools.

.PARAMETER MaximumCount
    Maximum number of machines in the pool.
    The default value is 1.
    Applicable to Full, Linked, Instant Clone Pools

.PARAMETER SpareCount
    Number of spare powered on machines in the pool.
    The default value is 1.
    Applicable to Full, Linked, Instant Clone Pools.

.PARAMETER ProvisioningTime
    Determines when machines are provisioned.
    Supported values are ON_DEMAND, UP_FRONT.
    The default value is UP_FRONT.
    Applicable to Full, Linked, Instant Clone Pools.

.PARAMETER MinimumCount
    The minimum number of machines to have provisioned if on demand provisioning is selected.
    The default value is 0.
    Applicable to Full, Linked, Instant Clone Pools.

.PARAMETER SpecificNames
    Specified names of VMs in the pool.
    The default value is <poolName>-1
    Applicable to Full, Linked and Cloned Pools.

.PARAMETER StartInMaintenanceMode
    Set this to true to allow virtual machines to be customized manually before users can log
    in and access them.
    the default value is false
    Applicable to Full, Linked, Instant Clone Pools.

.PARAMETER NumUnassignedMachinesKeptPoweredOn
    Number of unassigned machines kept powered on. value should be less than max number of vms in the pool.
    The default value is 1.
    Applicable to Full, Linked, Instant Clone Pools.
    When JSON Spec file is used for pool creation, the value will be read from JSON spec.

.PARAMETER AdContainer
    This is the Active Directory container which the machines will be added to upon creation.
    The default value is 'CN=Computers'.
    Applicable to Instant Clone Pool.

.PARAMETER NetBiosName
    Domain Net Bios Name.
    Applicable to Full, Linked, Instant Clone Pools.

.PARAMETER DomainAdmin
    Domain Administrator user name which will be used to join the domain.
    Default value is null.
    Applicable to Full, Linked, Instant Clone Pools.

.PARAMETER CustType
    Type of customization to use.
    Supported values are 'CLONE_PREP','QUICK_PREP','SYS_PREP','NONE'.
    Applicable to Full, Linked Clone Pools.

.PARAMETER SysPrepName
    The customization spec to use.
    Applicable to Full, Linked Clone Pools.

.PARAMETER PowerOffScriptName
    Power off script. ClonePrep/QuickPrep can run a customization script on instant/linked clone machines before they are powered off. Provide the path to the script on the parent virtual machine.
    Applicable to Linked, Instant Clone pools.

.PARAMETER PowerOffScriptParameters
    Power off script parameters. Example: p1 p2 p3
    Applicable to Linked, Instant Clone pools.

.PARAMETER PostSynchronizationScriptName
    Post synchronization script. ClonePrep/QuickPrep can run a customization script on instant/linked clone machines after they are created or recovered or a new image is pushed. Provide the path to the script on the parent virtual machine.
    Applicable to Linked, Instant Clone pools.

.PARAMETER PostSynchronizationScriptParameters
    Post synchronization script parameters. Example: p1 p2 p3
    Applicable to Linked, Instant Clone pools.

.PARAMETER Source
    Source of the Virtual machines for manual pool.
    Supported values are 'VIRTUAL_CENTER','UNMANAGED'.
    Set VIRTUAL_CENTER for vCenter managed VMs.
    Set UNMANAGED for Physical machines or VMs which are not vCenter managed VMs.
    Applicable to Manual Pools.

.PARAMETER VM
    List of existing virtual machine names to add into manual pool.
    Applicable to Manual Pools.

.PARAMETER Farm
    Farm to create RDS pools
    Applicable to RDS Pools.

.PARAMETER Spec
    Path of the JSON specification file.

.PARAMETER ClonePool
    Existing pool info to clone a new pool.

.PARAMETER HvServer
    Reference to Horizon View Server to query the pools from. If the value is not passed or null then
    first element from global:DefaultHVServers would be considered in-place of hvServer.

.EXAMPLE
    New-HVPool -LinkedClone -PoolName 'vmwarepool' -UserAssignment FLOATING -ParentVM 'Agent_vmware' -SnapshotVM 'kb-hotfix' -VmFolder 'vmware' -HostOrCluster 'CS-1' -ResourcePool 'CS-1' -Datastores 'datastore1' -NamingMethod PATTERN -PoolDisplayName 'vmware linkedclone pool' -Description  'created linkedclone pool from ps' -EnableProvisioning $true -StopProvisioningOnError $false -NamingPattern  "vmware2" -MinReady 0 -MaximumCount 1 -SpareCount 1 -ProvisioningTime UP_FRONT -SysPrepName vmwarecust -CustType SYS_PREP -NetBiosName adviewdev -DomainAdmin root
    Create new automated linked clone pool with naming method pattern

.EXAMPLE
    New-HVPool -Spec C:\VMWare\Specs\LinkedClone.json -Confirm:$false
    Create new automated linked clone pool by using JSON spec file

.EXAMPLE
   Get-HVPool -PoolName 'vmwarepool' | New-HVPool -PoolName 'clonedPool' -NamingPattern 'clonelnk1';
   (OR)
   $vmwarepool = Get-HVPool -PoolName 'vmwarepool';  New-HVPool -ClonePool $vmwarepool -PoolName 'clonedPool' -NamingPattern 'clonelnk1';
   Clones new pool by using existing pool configuration

.EXAMPLE
  New-HVPool -InstantClone -PoolName "InsPoolvmware" -PoolDisplayName "insPool" -Description "create instant pool" -UserAssignment FLOATING -ParentVM 'Agent_vmware' -SnapshotVM 'kb-hotfix' -VmFolder 'vmware' -HostOrCluster  'CS-1' -ResourcePool 'CS-1' -NamingMethod PATTERN -Datastores 'datastore1' -NamingPattern "inspool2" -NetBiosName 'adviewdev' -DomainAdmin root
  Create new automated instant clone pool with naming method pattern

.EXAMPLE
  New-HVPool -FullClone -PoolName "FullClone" -PoolDisplayName "FullClonePra" -Description "create full clone" -UserAssignment DEDICATED -Template 'powerCLI-VM-TEMPLATE' -VmFolder 'vmware' -HostOrCluster 'CS-1' -ResourcePool 'CS-1'  -Datastores 'datastore1' -NamingMethod PATTERN -NamingPattern 'FullCln1' -SysPrepName vmwarecust -CustType SYS_PREP -NetBiosName adviewdev -DomainAdmin root
  Create new automated full clone pool with naming method pattern

.EXAMPLE
  New-HVPool -MANUAL -PoolName 'manualVMWare' -PoolDisplayName 'MNLPUL' -Description 'Manual pool creation' -UserAssignment FLOATING -Source VIRTUAL_CENTER -VM 'PowerCLIVM1', 'PowerCLIVM2'
  Create new managed manual pool from virtual center managed VirtualMachines.

.EXAMPLE
  New-HVPool -MANUAL -PoolName 'unmangedVMWare' -PoolDisplayName 'unMngPl' -Description 'unmanaged Manual Pool creation' -UserAssignment FLOATING -Source UNMANAGED -VM 'myphysicalmachine.vmware.com'
  Create new unmanaged manual pool from unmanaged VirtualMachines.

.EXAMPLE
  New-HVPool -spec 'C:\Json\InstantClone.json' -PoolName 'InsPool1'-NamingPattern 'INSPool-'
  Creates new instant clone pool by reading few parameters from json and few parameters from command line.

.OUTPUTS
  None

.NOTES
    Author                      : Praveen Mathamsetty.
    Author email                : pmathamsetty@vmware.com
    Version                     : 1.1

    ===Tested Against Environment====
    Horizon View Server Version : 7.0.2, 7.1.0
    PowerCLI Version            : PowerCLI 6.5, PowerCLI 6.5.1
    PowerShell Version          : 5.0
#>

  [CmdletBinding(
    SupportsShouldProcess = $true,
    ConfirmImpact = 'High'
  )]
  param(

    [Parameter(Mandatory = $true,ParameterSetName = 'INSTANT_CLONE')]
    [switch]
    $InstantClone,

    [Parameter(Mandatory = $true,ParameterSetName = "LINKED_CLONE")]
    [switch]
    $LinkedClone,

    [Parameter(Mandatory = $true,ParameterSetName = 'FULL_CLONE')]
    [switch]
    $FullClone,

    [Parameter(Mandatory = $true,ParameterSetName = 'MANUAL')]
    [switch]
    $Manual,

    [Parameter(Mandatory = $true,ParameterSetName = 'RDS')]
    [switch]
    $Rds,

    [Parameter(Mandatory = $true,ParameterSetName = 'JSON_FILE')]
    [string]
    $Spec,

    [Parameter(Mandatory = $true,ValueFromPipeline = $true,ParameterSetName = 'CLONED_POOL')]
    $ClonePool,

    #desktopSpec.desktopBase.name
    [Parameter(Mandatory = $true,ParameterSetName = 'MANUAL')]
    [Parameter(Mandatory = $true,ParameterSetName = "LINKED_CLONE")]
    [Parameter(Mandatory = $true,ParameterSetName = 'INSTANT_CLONE')]
    [Parameter(Mandatory = $true,ParameterSetName = 'FULL_CLONE')]
    [Parameter(Mandatory = $true,ParameterSetName = 'RDS')]
    [Parameter(Mandatory = $true,ParameterSetName = 'CLONED_POOL')]
    [Parameter(Mandatory = $false,ParameterSetName = 'JSON_FILE')]
    [string]
    $PoolName,

    #desktopSpec.desktopBase.displayName
    [Parameter(Mandatory = $false)]
    [string]
    $PoolDisplayName = $poolName,

    #desktopSpec.desktopBase.description
    [Parameter(Mandatory = $false)]
    [string]
    $Description = ' ',

    #desktopSpec.desktopBase.accessGroup
    [Parameter(Mandatory = $false)]
    [string]
    $AccessGroup = 'Root',

    #desktopSpec.globalEntitlement
    [Parameter(Mandatory = $false)]
    [string]
    $GlobalEntitlement,

    #desktopSpec.automatedDesktopSpec.desktopUserAssignment.userAssigment if LINKED_CLONE, INSTANT_CLONE, FULL_CLONE
    #desktopSpec.manualDesktopSpec.desktopUserAssignment.userAssigment if MANUAL
    [Parameter(Mandatory = $true,ParameterSetName = 'MANUAL')]
    [Parameter(Mandatory = $true,ParameterSetName = "LINKED_CLONE")]
    [Parameter(Mandatory = $true,ParameterSetName = 'INSTANT_CLONE')]
    [Parameter(Mandatory = $true,ParameterSetName = 'FULL_CLONE')]
    [ValidateSet('FLOATING','DEDICATED')]
    [string]
    $UserAssignment,

    #desktopSpec.automatedDesktopSpec.desktopUserAssignment.automaticAssignment
    [Parameter(Mandatory = $false,ParameterSetName = 'MANUAL')]
    [Parameter(Mandatory = $false,ParameterSetName = "LINKED_CLONE")]
    [Parameter(Mandatory = $false,ParameterSetName = 'INSTANT_CLONE')]
    [Parameter(Mandatory = $false,ParameterSetName = 'FULL_CLONE')]
    [boolean]
    $AutomaticAssignment = $true,

    #desktopSpec.desktopSettings.enabled
    [Parameter(Mandatory = $false)]
    [boolean]
    $Enable = $true,

    #desktopSpec.desktopSettings.connectionServerRestrictions
    [Parameter(Mandatory = $false)]
    [string[]]
    $ConnectionServerRestrictions,

    #desktopSpec.desktopSettings.logoffSettings.powerPolicy
    [Parameter(Mandatory = $false,ParameterSetName = 'FULL_CLONE')]
    [Parameter(Mandatory = $false,ParameterSetName = "LINKED_CLONE")]
    [Parameter(Mandatory = $false,ParameterSetName = 'MANUAL')]
    [ValidateSet('TAKE_NO_POWER_ACTION', 'ALWAYS_POWERED_ON', 'SUSPEND', 'POWER_OFF')]
    [string]$PowerPolicy = 'TAKE_NO_POWER_ACTION',

    #desktopSpec.desktopSettings.logoffSettings.automaticLogoffPolicy
    [Parameter(Mandatory = $false,ParameterSetName = 'FULL_CLONE')]
    [Parameter(Mandatory = $false,ParameterSetName = 'INSTANT_CLONE')]
    [Parameter(Mandatory = $false,ParameterSetName = "LINKED_CLONE")]
    [Parameter(Mandatory = $false,ParameterSetName = 'MANUAL')]
    [ValidateSet('IMMEDIATELY', 'NEVER', 'AFTER')]
    [string]$AutomaticLogoffPolicy = 'NEVER',

    #desktopSpec.desktopSettings.logoffSettings.automaticLogoffMinutes
    [Parameter(Mandatory = $false,ParameterSetName = 'FULL_CLONE')]
    [Parameter(Mandatory = $false,ParameterSetName = 'INSTANT_CLONE')]
    [Parameter(Mandatory = $false,ParameterSetName = "LINKED_CLONE")]
    [ValidateRange(1,[int]::MaxValue)]
    [int]$AutomaticLogoffMinutes = 120,

    #desktopSpec.desktopSettings.logoffSettings.allowUsersToResetMachines
    [Parameter(Mandatory = $false,ParameterSetName = 'FULL_CLONE')]
    [Parameter(Mandatory = $false,ParameterSetName = 'INSTANT_CLONE')]
    [Parameter(Mandatory = $false,ParameterSetName = "LINKED_CLONE")]
    [Parameter(Mandatory = $false,ParameterSetName = 'MANUAL')]
    [boolean]$allowUsersToResetMachines = $false,

    #desktopSpec.desktopSettings.logoffSettings.allowMultipleSessionsPerUser
    [Parameter(Mandatory = $false,ParameterSetName = 'INSTANT_CLONE')]
    [Parameter(Mandatory = $false,ParameterSetName = "LINKED_CLONE")]
    [Parameter(Mandatory = $false,ParameterSetName = 'MANUAL')]
    [boolean]$allowMultipleSessionsPerUser = $false,

    #desktopSpec.desktopSettings.logoffSettings.deleteOrRefreshMachineAfterLogoff
    [Parameter(Mandatory = $false,ParameterSetName = 'INSTANT_CLONE')]
    [Parameter(Mandatory = $false,ParameterSetName = "LINKED_CLONE")]
    [ValidateSet('NEVER', 'DELETE', 'REFRESH')]
    [string]$deleteOrRefreshMachineAfterLogoff = 'NEVER',

    #desktopSpec.desktopSettings.logoffSettings.refreshOsDiskAfterLogoff
    [Parameter(Mandatory = $false,ParameterSetName = "LINKED_CLONE")]
    [ValidateSet('NEVER', 'ALWAYS', 'EVERY', 'AT_SIZE')]
    [string]$refreshOsDiskAfterLogoff = 'NEVER',

    #desktopSpec.desktopSettings.logoffSettings.refreshPeriodDaysForReplicaOsDisk
    [Parameter(Mandatory = $false,ParameterSetName = "LINKED_CLONE")]
    [int]$refreshPeriodDaysForReplicaOsDisk = 120,

    #desktopSpec.desktopSettings.logoffSettings.refreshThresholdPercentageForReplicaOsDisk
    [Parameter(Mandatory = $false,ParameterSetName = "LINKED_CLONE")]
    [ValidateRange(1,100)]
    [int]$refreshThresholdPercentageForReplicaOsDisk,

    #DesktopDisplayProtocolSettings
    [Parameter(Mandatory = $false,ParameterSetName = 'MANUAL')]
    [boolean]$enableCollaboration = $true,
    
    #desktopSpec.desktopSettings.logoffSettings.supportedDisplayProtocols
    [Parameter(Mandatory = $false,ParameterSetName = 'FULL_CLONE')]
    [Parameter(Mandatory = $false,ParameterSetName = 'INSTANT_CLONE')]
    [Parameter(Mandatory = $false,ParameterSetName = "LINKED_CLONE")]
    [Parameter(Mandatory = $false,ParameterSetName = 'MANUAL')]
    [ValidateSet('RDP', 'PCOIP', 'BLAST')]
    [string[]]$supportedDisplayProtocols = @('RDP', 'PCOIP', 'BLAST'),

    #desktopSpec.desktopSettings.logoffSettings.defaultDisplayProtocol
    [Parameter(Mandatory = $false,ParameterSetName = 'FULL_CLONE')]
    [Parameter(Mandatory = $false,ParameterSetName = 'INSTANT_CLONE')]
    [Parameter(Mandatory = $false,ParameterSetName = 'LINKED_CLONE')]
    [Parameter(Mandatory = $false,ParameterSetName = 'MANUAL')]
    [ValidateSet('RDP', 'PCOIP', 'BLAST')]
    [string]$defaultDisplayProtocol = 'PCOIP',

    #desktopSpec.desktopSettings.logoffSettings.allowUsersToChooseProtocol
    [Parameter(Mandatory = $false,ParameterSetName = 'FULL_CLONE')]
    [Parameter(Mandatory = $false,ParameterSetName = 'INSTANT_CLONE')]
    [Parameter(Mandatory = $false,ParameterSetName = "LINKED_CLONE")]
    [Parameter(Mandatory = $false,ParameterSetName = 'MANUAL')]
    [int]$allowUsersToChooseProtocol = $true,

    #desktopSpec.desktopSettings.logoffSettings.enableHTMLAccess
    [Parameter(Mandatory = $false,ParameterSetName = 'FULL_CLONE')]
    [Parameter(Mandatory = $false,ParameterSetName = 'INSTANT_CLONE')]
    [Parameter(Mandatory = $false,ParameterSetName = "LINKED_CLONE")]
    [Parameter(Mandatory = $false,ParameterSetName = 'MANUAL')]
    [boolean]$enableHTMLAccess = $false,

    # DesktopPCoIPDisplaySettings
    #desktopSpec.desktopSettings.DisplayProtocolSettings.pcoipDisplaySettings.renderer3D
    [Parameter(Mandatory = $false,ParameterSetName = 'INSTANT_CLONE')]
    [Parameter(Mandatory = $false,ParameterSetName = "LINKED_CLONE")]
    [Parameter(Mandatory = $false,ParameterSetName = 'MANUAL')]
    [ValidateSet('MANAGE_BY_VSPHERE_CLIENT', 'AUTOMATIC', 'SOFTWARE', 'HARDWARE', 'DISABLED')]
    [string]$renderer3D = 'DISABLED',

    #desktopSpec.desktopSettings.DisplayProtocolSettings.pcoipDisplaySettings.enableGRIDvGPUs
    [Parameter(Mandatory = $false,ParameterSetName = "LINKED_CLONE")]
    [Parameter(Mandatory = $false,ParameterSetName = 'MANUAL')]
    [Parameter(Mandatory = $false,ParameterSetName = 'INSTANT_CLONE')]
    [boolean]$enableGRIDvGPUs = $false,

    #desktopSpec.desktopSettings.DisplayProtocolSettings.pcoipDisplaySettings.VGPUGridProfile
    [Parameter(Mandatory = $false,ParameterSetName = "LINKED_CLONE")]
    # [Parameter(Mandatory = $false,ParameterSetName = 'MANUAL')]
    [Parameter(Mandatory = $false,ParameterSetName = 'INSTANT_CLONE')]
    [ValidateSet('grid_m10-0b','grid_m10-1b','grid_m10-2b','grid_m10-0q','grid_m10-1q','grid_m10-2q','grid_m10-4q','grid_m10-8q')]
    [string]$VGPUGridProfile = $null,

    #desktopSpec.desktopSettings.logoffSettings.pcoipDisplaySettings.vRamSizeMB
    [Parameter(Mandatory = $false,ParameterSetName = "LINKED_CLONE")]
    [ValidateRange(64,512)]
    [int]$vRamSizeMB = 96,

    #desktopSpec.desktopSettings.logoffSettings.pcoipDisplaySettings.maxNumberOfMonitors
    [Parameter(Mandatory = $false,ParameterSetName = 'FULL_CLONE')]
    [Parameter(Mandatory = $false,ParameterSetName = "LINKED_CLONE")]
    [ValidateRange(1,4)]
    [int]$maxNumberOfMonitors = 2,

    #desktopSpec.desktopSettings.logoffSettings.pcoipDisplaySettings.maxResolutionOfAnyOneMonitor
    [Parameter(Mandatory = $false,ParameterSetName = 'FULL_CLONE')]
    [Parameter(Mandatory = $false,ParameterSetName = "LINKED_CLONE")]
    [ValidateSet('WUXGA', 'WSXGA_PLUS', 'WQXGA', 'UHD')]
    [string]$maxResolutionOfAnyOneMonitor = 'WUXGA',

    # flashSettings
    #desktopSpec.desktopSettings.flashSettings.quality
    [Parameter(Mandatory = $false,ParameterSetName = "LINKED_CLONE")]
    [Parameter(Mandatory = $false,ParameterSetName = 'INSTANT_CLONE')]
    [Parameter(Mandatory = $false,ParameterSetName = 'FULL_CLONE')]
    [Parameter(Mandatory = $false,ParameterSetName = 'MANUAL')]
    [ValidateSet('NO_CONTROL', 'LOW', 'MEDIUM', 'HIGH')]
    [string]$Quality = 'NO_CONTROL',

    #desktopSpec.desktopSettings.flashSettings.throttling
    [Parameter(Mandatory = $false,ParameterSetName = "LINKED_CLONE")]
    [Parameter(Mandatory = $false,ParameterSetName = 'INSTANT_CLONE')]
    [Parameter(Mandatory = $false,ParameterSetName = 'FULL_CLONE')]
    [Parameter(Mandatory = $false,ParameterSetName = 'MANUAL')]
    [ValidateSet('DISABLED', 'CONSERVATIVE', 'MODERATE', 'AGGRESSIVE')]
    [string]$Throttling = 'DISABLED',

    #mirageConfigurationOverrides
    #desktopSpec.desktopSettings.mirageConfigurationOverrides.overrideGlobalSetting
    [Parameter(Mandatory = $false,ParameterSetName = "LINKED_CLONE")]
    [boolean]$overrideGlobalSetting = $false,

    #desktopSpec.desktopSettings.mirageConfigurationOverrides.enabled
    [Parameter(Mandatory = $false,ParameterSetName = "LINKED_CLONE")]
    [boolean]$enabled = $true,

    #desktopSpec.desktopSettings.mirageConfigurationOverrides.url
    [Parameter(Mandatory = $false,ParameterSetName = "LINKED_CLONE")]
    [string]$url = $true,

    #desktopSpec.automatedDesktopSpec.virtualCenter if LINKED_CLONE, INSTANT_CLONE, FULL_CLONE
    #desktopSpec.manualDesktopSpec.virtualCenter if MANUAL
    [Parameter(Mandatory = $false,ParameterSetName = 'MANUAL')]
    [Parameter(Mandatory = $false,ParameterSetName = "LINKED_CLONE")]
    [Parameter(Mandatory = $false,ParameterSetName = 'INSTANT_CLONE')]
    [Parameter(Mandatory = $false,ParameterSetName = 'FULL_CLONE')]
    [string]
    $Vcenter,

    #desktopSpec.automatedDesktopSpec.virtualCenterProvisioningSettings.virtualCenterProvisioningData.template if FULL_CLONE
    [Parameter(Mandatory = $true,ParameterSetName = 'FULL_CLONE')]
    [string]
    $Template,

    #desktopSpec.automatedDesktopSpec.virtualCenterProvisioningSettings.virtualCenterProvisioningData.parentVM if LINKED_CLONE, INSTANT_CLONE
    [Parameter(Mandatory = $true,ParameterSetName = "LINKED_CLONE")]
    [Parameter(Mandatory = $true,ParameterSetName = 'INSTANT_CLONE')]
    [string]
    $ParentVM,

    #desktopSpec.automatedDesktopSpec.virtualCenterProvisioningSettings.virtualCenterProvisioningData.snapshotVM if LINKED_CLONE, INSTANT_CLONE
    [Parameter(Mandatory = $true,ParameterSetName = "LINKED_CLONE")]
    [Parameter(Mandatory = $true,ParameterSetName = 'INSTANT_CLONE')]
    [string]
    $SnapshotVM,

    #desktopSpec.automatedDesktopSpec.virtualCenterProvisioningSettings.addVirtualTPM if INSTANT_CLONE, ???
    # [Parameter(Mandatory = $true,ParameterSetName = "LINKED_CLONE")]
    [Parameter(Mandatory = $false,ParameterSetName = 'INSTANT_CLONE')]
    [ValidateNotNullOrEmpty()]
    [boolean]$addVirtualTPM = $false,

    #desktopSpec.automatedDesktopSpec.virtualCenterProvisioningSettings.virtualCenterProvisioningData.vmFolder if LINKED_CLONE, INSTANT_CLONE, FULL_CLONE
    [Parameter(Mandatory = $true,ParameterSetName = "LINKED_CLONE")]
    [Parameter(Mandatory = $true,ParameterSetName = 'INSTANT_CLONE')]
    [Parameter(Mandatory = $true,ParameterSetName = 'FULL_CLONE')]
    [string]
    $VmFolder,

    #desktopSpec.automatedDesktopSpec.virtualCenterProvisioningSettings.virtualCenterProvisioningData.hostOrCluster if LINKED_CLONE, INSTANT_CLONE, FULL_CLONE
    [Parameter(Mandatory = $true,ParameterSetName = "LINKED_CLONE")]
    [Parameter(Mandatory = $true,ParameterSetName = 'INSTANT_CLONE')]
    [Parameter(Mandatory = $true,ParameterSetName = 'FULL_CLONE')]
    [string]
    $HostOrCluster,

    #desktopSpec.automatedDesktopSpec.virtualCenterProvisioningSettings.virtualCenterProvisioningData.resourcePool if LINKED_CLONE, INSTANT_CLONE, FULL_CLONE
    [Parameter(Mandatory = $true,ParameterSetName = "LINKED_CLONE")]
    [Parameter(Mandatory = $true,ParameterSetName = 'INSTANT_CLONE')]
    [Parameter(Mandatory = $true,ParameterSetName = 'FULL_CLONE')]
    [string]
    $ResourcePool,

    #desktopSpec.automatedDesktopSpec.virtualCenterProvisioningSettings.virtualCenterProvisioningData.datacenter if LINKED_CLONE, INSTANT_CLONE, FULL_CLONE
    [Parameter(Mandatory = $false,ParameterSetName = "LINKED_CLONE")]
    [Parameter(Mandatory = $false,ParameterSetName = 'INSTANT_CLONE')]
    [Parameter(Mandatory = $false,ParameterSetName = 'FULL_CLONE')]
    [string]
    $datacenter,

    #desktopSpec.automatedDesktopSpec.virtualCenterProvisioningSettings.virtualCenterStorageSettings.datastore if LINKED_CLONE, INSTANT_CLONE, FULL_CLONE
    [Parameter(Mandatory = $true,ParameterSetName = "LINKED_CLONE")]
    [Parameter(Mandatory = $true,ParameterSetName = 'INSTANT_CLONE')]
    [Parameter(Mandatory = $true,ParameterSetName = 'FULL_CLONE')]
    [string[]]
    $Datastores,

    #desktopSpec.automatedDesktopSpec.virtualCenterProvisioningSettings.virtualCenterStorageSettings.datastores.storageOvercommit if LINKED_CLONE, INSTANT_CLONE, FULL_CLONE
    [Parameter(Mandatory = $false,ParameterSetName = "LINKED_CLONE")]
    [Parameter(Mandatory = $false,ParameterSetName = 'INSTANT_CLONE')]
    [Parameter(Mandatory = $false,ParameterSetName = 'FULL_CLONE')]
    [string[]]
    $StorageOvercommit = $null,

    #desktopSpec.automatedDesktopSpec.virtualCenterProvisioningSettings.virtualCenterStorageSettings.useVSAN if LINKED_CLONE, INSTANT_CLONE, FULL_CLONE
    [Parameter(Mandatory = $false,ParameterSetName = "LINKED_CLONE")]
    [Parameter(Mandatory = $false,ParameterSetName = 'INSTANT_CLONE')]
    [Parameter(Mandatory = $false,ParameterSetName = 'FULL_CLONE')]
    [boolean]
    $UseVSAN =  $false,

    #desktopSpec.automatedDesktopSpec.virtualCenterProvisioningSettings.virtualCenterStorageSettings.viewComposerStorageSettings.useSeparateDatastoresReplicaAndOSDisks if LINKED_CLONE, INSTANT_CLONE
    [Parameter(Mandatory = $false,ParameterSetName = "LINKED_CLONE")]
    [Parameter(Mandatory = $false,ParameterSetName = 'INSTANT_CLONE')]
    [boolean]
    $UseSeparateDatastoresReplicaAndOSDisks = $false,

    #desktopSpec.automatedDesktopSpec.virtualCenterProvisioningSettings.virtualCenterStorageSettings.viewComposerStorageSettings.replicaDiskDatastore if LINKED_CLONE, INSTANT_CLONE
    [Parameter(Mandatory = $false,ParameterSetName = "LINKED_CLONE")]
    [Parameter(Mandatory = $false,ParameterSetName = 'INSTANT_CLONE')]
    [string]
    $ReplicaDiskDatastore,

	#desktopSpec.automatedDesktopSpec.virtualCenterProvisioningSettings.virtualCenterStorageSettings.viewComposerStorageSettings.UseNativeSnapshots if LINKED_CLONE, INSTANT_CLONE
    [Parameter(Mandatory = $false,ParameterSetName = "LINKED_CLONE")]
    [Parameter(Mandatory = $false,ParameterSetName = 'INSTANT_CLONE')]
    [boolean]
    $UseNativeSnapshots = $false,

    #desktopSpec.automatedDesktopSpec.virtualCenterProvisioningSettings.virtualCenterStorageSettings.viewComposerStorageSettings.spaceReclamationSettings.reclaimVmDiskSpace if LINKED_CLONE, INSTANT_CLONE
    [Parameter(Mandatory = $false,ParameterSetName = "LINKED_CLONE")]
    [Parameter(Mandatory = $false,ParameterSetName = 'INSTANT_CLONE')]
    [boolean]
    $ReclaimVmDiskSpace = $false,

    #desktopSpec.automatedDesktopSpec.virtualCenterProvisioningSettings.virtualCenterStorageSettings.viewComposerStorageSettings.spaceReclamationSettings.reclamationThresholdGB if LINKED_CLONE
    [Parameter(Mandatory = $false,ParameterSetName = "LINKED_CLONE")]
    [ValidateRange(0,[Int]::MaxValue)]
    [int]
    $ReclamationThresholdGB =  1,

    #desktopSpec.automatedDesktopSpec.virtualCenterProvisioningSettings.virtualCenterStorageSettings.viewComposerStorageSettings.persistentDiskSettings.redirectWindowsProfile if LINKED_CLONE, INSTANT_CLONE
    [Parameter(Mandatory = $false,ParameterSetName = "LINKED_CLONE")]
    [Parameter(Mandatory = $false,ParameterSetName = 'INSTANT_CLONE')]
    [boolean]
    $RedirectWindowsProfile = $true,

    #desktopSpec.automatedDesktopSpec.virtualCenterProvisioningSettings.virtualCenterStorageSettings.viewComposerStorageSettings.persistentDiskSettings.useSeparateDatastoresPersistentAndOSDisks if LINKED_CLONE
    [Parameter(Mandatory = $false,ParameterSetName = "LINKED_CLONE")]
    [boolean]
    $UseSeparateDatastoresPersistentAndOSDisks = $false,

    #desktopSpec.automatedDesktopSpec.virtualCenterProvisioningSettings.virtualCenterStorageSettings.viewComposerStorageSettings.persistentDiskSettings.PersistentDiskDatastores if LINKED_CLONE
    [Parameter(Mandatory = $false,ParameterSetName = "LINKED_CLONE")]
    [string[]]
    $PersistentDiskDatastores,

    #desktopSpec.automatedDesktopSpec.virtualCenterProvisioningSettings.virtualCenterStorageSettings.viewComposerStorageSettings.persistentDiskSettings.PersistentDiskDatastores if LINKED_CLONE
    [Parameter(Mandatory = $false,ParameterSetName = "LINKED_CLONE")]
    [string[]]
    $PersistentDiskStorageOvercommit = $null,

    #desktopSpec.automatedDesktopSpec.virtualCenterProvisioningSettings.virtualCenterStorageSettings.viewComposerStorageSettings.persistentDiskSettings.diskSizeMB if LINKED_CLONE
    [Parameter(Mandatory = $false,ParameterSetName = "LINKED_CLONE")]
    [ValidateRange(128,[Int]::MaxValue)]
    [int]
    $DiskSizeMB = 2048,

    #desktopSpec.automatedDesktopSpec.virtualCenterProvisioningSettings.virtualCenterStorageSettings.viewComposerStorageSettings.persistentDiskSettings.diskDriveLetter if LINKED_CLONE
    [Parameter(Mandatory = $false,ParameterSetName = "LINKED_CLONE")]
    [ValidatePattern("^[D-Z]$")]
    [string]
    $DiskDriveLetter = "D",

    #desktopSpec.automatedDesktopSpec.virtualCenterProvisioningSettings.virtualCenterStorageSettings.viewComposerStorageSettings.nonPersistentDiskSettings.redirectDisposableFiles if LINKED_CLONE
    [Parameter(Mandatory = $false,ParameterSetName = "LINKED_CLONE")]
    [boolean]
    $redirectDisposableFiles,

    #desktopSpec.automatedDesktopSpec.virtualCenterProvisioningSettings.virtualCenterStorageSettings.viewComposerStorageSettings.nonPersistentDiskSettings.diskSizeMB if LINKED_CLONE
    [Parameter(Mandatory = $false,ParameterSetName = "LINKED_CLONE")]
    [ValidateRange(512,[Int]::MaxValue)]
    [int]
    $NonPersistentDiskSizeMB = 4096,

    #desktopSpec.automatedDesktopSpec.virtualCenterProvisioningSettings.virtualCenterStorageSettings.viewComposerStorageSettings.nonPersistentDiskSettings.diskDriveLetter if LINKED_CLONE
    [Parameter(Mandatory = $false,ParameterSetName = "LINKED_CLONE")]
    [ValidatePattern("^[D-Z]|Auto$")]
    [string]
    $NonPersistentDiskDriveLetter = "Auto",

    #desktopSpec.automatedDesktopSpec.virtualCenterProvisioningSettings.virtualCenterStorageSettings.viewStorageAcceleratorSettings.useViewStorageAccelerator if LINKED_CLONE
    [Parameter(Mandatory = $false,ParameterSetName = "LINKED_CLONE")]
    [boolean]
    $UseViewStorageAccelerator =  $false,

    #desktopSpec.automatedDesktopSpec.virtualCenterProvisioningSettings.virtualCenterStorageSettings.viewStorageAcceleratorSettings.useViewStorageAccelerator if LINKED_CLONE
    [Parameter(Mandatory = $false,ParameterSetName = "LINKED_CLONE")]
    [string]
    $ViewComposerDiskTypes = "OS_DISKS",

    #desktopSpec.automatedDesktopSpec.virtualCenterProvisioningSettings.virtualCenterStorageSettings.viewStorageAcceleratorSettings.regenerateViewStorageAcceleratorDays if LINKED_CLONE
    [Parameter(Mandatory = $false,ParameterSetName = "LINKED_CLONE")]
    [ValidateRange(1,999)]
    [int]
    $RegenerateViewStorageAcceleratorDays = 7,

    #desktopSpec.automatedDesktopSpec.virtualCenterProvisioningSettings.virtualCenterStorageSettings.viewStorageAcceleratorSettings.blackoutTimes if LINKED_CLONE
    [Parameter(Mandatory = $false,ParameterSetName = "LINKED_CLONE")]
    [VMware.Hv.DesktopBlackoutTime[]]
    $BlackoutTimes,

    #desktopSpec.automatedDesktopSpec.virtualCenterProvisioningSettings.virtualCenterNetworkingSettings.nics
    [Parameter(Mandatory = $false,ParameterSetName = "LINKED_CLONE")]
    [Parameter(Mandatory = $false,ParameterSetName = 'INSTANT_CLONE')]
    [Parameter(Mandatory = $false,ParameterSetName = 'FULL_CLONE')]
    [VMware.Hv.DesktopNetworkInterfaceCardSettings[]]
    $Nics,

    #desktopSpec.automatedDesktopSpec.virtualCenterProvisioningSettings.enableProvsioning if LINKED_CLONE, INSTANT_CLONE, FULL_CLONE
    [Parameter(Mandatory = $false,ParameterSetName = "LINKED_CLONE")]
    [Parameter(Mandatory = $false,ParameterSetName = 'INSTANT_CLONE')]
    [Parameter(Mandatory = $false,ParameterSetName = 'FULL_CLONE')]
    [boolean]
    $EnableProvisioning = $true,

    #desktopSpec.automatedDesktopSpec.virtualCenterProvisioningSettings.stopProvisioningOnError if LINKED_CLONE, INSTANT_CLONE, FULL_CLONE
    [Parameter(Mandatory = $false,ParameterSetName = "LINKED_CLONE")]
    [Parameter(Mandatory = $false,ParameterSetName = 'INSTANT_CLONE')]
    [Parameter(Mandatory = $false,ParameterSetName = 'FULL_CLONE')]
    [boolean]
    $StopProvisioningOnError = $true,

    [Parameter(Mandatory = $false,ParameterSetName = "LINKED_CLONE")]
    [Parameter(Mandatory = $false,ParameterSetName = 'INSTANT_CLONE')]
    [Parameter(Mandatory = $false,ParameterSetName = 'FULL_CLONE')]
    [Parameter(Mandatory = $false,ParameterSetName = 'MANUAL')]
    [string]
    $TransparentPageSharingScope = 'VM',

    #desktopSpec.automatedDesktopSpec.vmNamingSpec.namingMethod if LINKED_CLONE, INSTANT_CLONE, FULL_CLONE
    [Parameter(Mandatory = $true,ParameterSetName = "LINKED_CLONE")]
    [Parameter(Mandatory = $true,ParameterSetName = 'INSTANT_CLONE')]
    [Parameter(Mandatory = $true,ParameterSetName = 'FULL_CLONE')]
    [Parameter(Mandatory = $false,ParameterSetName = 'CLONED_POOL')]
    [ValidateSet('SPECIFIED','PATTERN')]
    [string]
    $NamingMethod = 'PATTERN',

    #desktopSpec.automatedDesktopSpec.vmNamingSpec.namingPattern if LINKED_CLONE, INSTANT_CLONE, FULL_CLONE
    [Parameter(Mandatory = $false,ParameterSetName = "LINKED_CLONE")]
    [Parameter(Mandatory = $false,ParameterSetName = 'INSTANT_CLONE')]
    [Parameter(Mandatory = $false,ParameterSetName = 'FULL_CLONE')]
    [Parameter(Mandatory = $false,ParameterSetName = 'CLONED_POOL')]
    [Parameter(Mandatory = $false,ParameterSetName = 'JSON_FILE')]
    [string]
    $NamingPattern = $poolName + '{n:fixed=4}',

    #desktopSpec.automatedDesktopSpec.virtualCenterProvisioningSettings.minReadyVMsOnVComposerMaintenance if LINKED_CLONE, INSTANT_CLONE, FULL_CLONE
    [Parameter(Mandatory = $false,ParameterSetName = "LINKED_CLONE")]
    [int]
    $MinReady = 0,

    #desktopSpec.automatedDesktopSpec.vmNamingSpec.patternNamingSettings.maxNumberOfMachines if LINKED_CLONE, INSTANT_CLONE, FULL_CLONE
    [Parameter(Mandatory = $false,ParameterSetName = "LINKED_CLONE")]
    [Parameter(Mandatory = $false,ParameterSetName = 'INSTANT_CLONE')]
    [Parameter(Mandatory = $false,ParameterSetName = 'FULL_CLONE')]
    [int]
    $MaximumCount = 1,

    #desktopSpec.automatedDesktopSpec.vmNamingSpec.patternNamingSettings.numberOfSpareMachines if LINKED_CLONE, INSTANT_CLONE, FULL_CLONE
    [Parameter(Mandatory = $false,ParameterSetName = "LINKED_CLONE")]
    [Parameter(Mandatory = $false,ParameterSetName = 'INSTANT_CLONE')]
    [Parameter(Mandatory = $false,ParameterSetName = 'FULL_CLONE')]
    [int]
    $SpareCount = 1,

    #desktopSpec.automatedDesktopSpec.vmNamingSpec.patternNamingSettings.provisioningTime if LINKED_CLONE, INSTANT_CLONE, FULL_CLONE
    [Parameter(Mandatory = $false,ParameterSetName = "LINKED_CLONE")]
    [Parameter(Mandatory = $false,ParameterSetName = 'INSTANT_CLONE')]
    [Parameter(Mandatory = $false,ParameterSetName = 'FULL_CLONE')]
    [ValidateSet('ON_DEMAND','UP_FRONT')]
    [string]
    $ProvisioningTime = 'UP_FRONT',

    #desktopSpec.automatedDesktopSpec.vmNamingSpec.patternNamingSettings.minimumNumberOfMachines if LINKED_CLONE, INSTANT_CLONE, FULL_CLONE
    [Parameter(Mandatory = $false,ParameterSetName = "LINKED_CLONE")]
    [Parameter(Mandatory = $false,ParameterSetName = 'INSTANT_CLONE')]
    [Parameter(Mandatory = $false,ParameterSetName = 'FULL_CLONE')]
    [int]
    $MinimumCount = 0,

    #desktopSpec.automatedDesktopSpec.vmNamingSpec.specifiNamingSpec.namingPattern if LINKED_CLONE, INSTANT_CLONE, FULL_CLONE
    [Parameter(Mandatory = $false,ParameterSetName = "LINKED_CLONE")]
    [Parameter(Mandatory = $false,ParameterSetName = 'INSTANT_CLONE')]
    [Parameter(Mandatory = $false,ParameterSetName = 'FULL_CLONE')]
    [Parameter(Mandatory = $false,ParameterSetName = 'CLONED_POOL')]
    [string[]]
    $SpecificNames = $poolName + '-1',

    #desktopSpec.automatedDesktopSpec.vmNamingSpec.specifiNamingSpec.startMachinesInMaintenanceMode if LINKED_CLONE, INSTANT_CLONE, FULL_CLONE
    [Parameter(Mandatory = $false,ParameterSetName = "LINKED_CLONE")]
    [Parameter(Mandatory = $false,ParameterSetName = 'INSTANT_CLONE')]
    [Parameter(Mandatory = $false,ParameterSetName = 'FULL_CLONE')]
    [boolean]
    $StartInMaintenanceMode = $false,

    #desktopSpec.automatedDesktopSpec.vmNamingSpec.specifiNamingSpec.numUnassignedMachinesKeptPoweredOnif LINKED_CLONE, INSTANT_CLONE, FULL_CLONE
    [Parameter(Mandatory = $false,ParameterSetName = "LINKED_CLONE")]
    [Parameter(Mandatory = $false,ParameterSetName = 'INSTANT_CLONE')]
    [Parameter(Mandatory = $false,ParameterSetName = 'FULL_CLONE')]
    [Parameter(Mandatory = $false,ParameterSetName = "JSON_FILE")]
    [int]
    $NumUnassignedMachinesKeptPoweredOn = 1,

    #desktopSpec.automatedDesktopSpec.customizationSettings.AdContainer
    [Parameter(Mandatory = $false,ParameterSetName = 'INSTANT_CLONE')]
    [Parameter(Mandatory = $false,ParameterSetName = 'LINKED_CLONE')]
    $AdContainer = 'CN=Computers',

    [Parameter(Mandatory = $true,ParameterSetName = 'INSTANT_CLONE')]
    [Parameter(Mandatory = $false,ParameterSetName = 'LINKED_CLONE')]
    [Parameter(Mandatory = $false,ParameterSetName = 'FULL_CLONE')]
    [string]$NetBiosName,

    #desktopSpec.automatedDesktopSpec.customizationSettings.domainAdministrator
    #desktopSpec.automatedDesktopSpec.customizationSettings.cloneprepCustomizationSettings.instantCloneEngineDomainAdministrator
    [Parameter(Mandatory = $false,ParameterSetName = 'INSTANT_CLONE')]
    [Parameter(Mandatory = $false,ParameterSetName = 'LINKED_CLONE')]
    [string]$DomainAdmin = $null,

    #desktopSpec.automatedDesktopSpec.customizationSettings.customizationType if LINKED_CLONE, FULL_CLONE
    [Parameter(Mandatory = $true,ParameterSetName = "LINKED_CLONE")]
    [Parameter(Mandatory = $true,ParameterSetName = "FULL_CLONE")]
    [ValidateSet('CLONE_PREP','QUICK_PREP','SYS_PREP','NONE')]
    [string]
    $CustType,

    #desktopSpec.automatedDesktopSpec.customizationSettings.reusePreExistingAccounts if LINKED_CLONE, INSTANT_CLONE, FULL_CLONE
    [Parameter(Mandatory = $false,ParameterSetName = 'FULL_CLONE')]
    [Parameter(Mandatory = $false,ParameterSetName = 'INSTANT_CLONE')]
    [Parameter(Mandatory = $false,ParameterSetName = 'LINKED_CLONE')]
    [Boolean]
    $ReusePreExistingAccounts = $false,

    #desktopSpec.automatedDesktopSpec.customizationSettings.sysprepCustomizationSettings.customizationSpec if LINKED_CLONE, FULL_CLONE
    [Parameter(Mandatory = $false,ParameterSetName = "LINKED_CLONE")]
    [Parameter(Mandatory = $false,ParameterSetName = "FULL_CLONE")]
    [string]
    $SysPrepName,

    #desktopSpec.automatedDesktopSpec.customizationSettings.noCustomizationSettings.doNotPowerOnVMsAfterCreation if FULL_CLONE
    [Parameter(Mandatory = $false,ParameterSetName = "FULL_CLONE")]
    [boolean]
    $DoNotPowerOnVMsAfterCreation = $false,

    #desktopSpec.automatedDesktopSpec.customizationSettings.quickprepCustomizationSettings.powerOffScriptName if LINKED_CLONE, INSTANT_CLONE
    #desktopSpec.automatedDesktopSpec.customizationSettings.cloneprepCustomizationSettings.powerOffScriptName
    [Parameter(Mandatory = $false,ParameterSetName = 'INSTANT_CLONE')]
    [Parameter(Mandatory = $false,ParameterSetName = 'LINKED_CLONE')]
    [string]
    $PowerOffScriptName,

    #desktopSpec.automatedDesktopSpec.customizationSettings.quickprepCustomizationSettings.powerOffScriptParameters
    #desktopSpec.automatedDesktopSpec.customizationSettings.cloneprepCustomizationSettings.powerOffScriptParameters
    [Parameter(Mandatory = $false,ParameterSetName = 'INSTANT_CLONE')]
    [Parameter(Mandatory = $false,ParameterSetName = 'LINKED_CLONE')]
    [string]
    $PowerOffScriptParameters,

    #desktopSpec.automatedDesktopSpec.customizationSettings.quickprepCustomizationSettings.postSynchronizationScriptName
    #desktopSpec.automatedDesktopSpec.customizationSettings.cloneprepCustomizationSettings.postSynchronizationScriptName
    [Parameter(Mandatory = $false,ParameterSetName = 'INSTANT_CLONE')]
    [Parameter(Mandatory = $false,ParameterSetName = 'LINKED_CLONE')]
    [string]
    $PostSynchronizationScriptName,

    #desktopSpec.automatedDesktopSpec.customizationSettings.quickprepCustomizationSettings.postSynchronizationScriptParameters
    #desktopSpec.automatedDesktopSpec.customizationSettings.cloneprepCustomizationSettings.postSynchronizationScriptParameters
    [Parameter(Mandatory = $false,ParameterSetName = 'INSTANT_CLONE')]
    [Parameter(Mandatory = $false,ParameterSetName = 'LINKED_CLONE')]
    [string]
    $PostSynchronizationScriptParameters,

    #manual desktop
    [Parameter(Mandatory = $true,ParameterSetName = 'MANUAL')]
    [ValidateSet('VIRTUAL_CENTER','UNMANAGED')]
    [string]
    $Source,

    [Parameter(Mandatory = $true,ParameterSetName = 'MANUAL')]
    [Parameter(Mandatory = $false,ParameterSetName = "JSON_FILE")]
    [Parameter(Mandatory = $false,ParameterSetName = 'CLONED_POOL')]
    [string[]]$VM,

    #farm
    [Parameter(Mandatory = $false,ParameterSetName = 'RDS')]
    [Parameter(Mandatory = $false,ParameterSetName = 'CLONED_POOL')]

    [string]
    $Farm,

    [Parameter(Mandatory = $false)]
    $HvServer = $null
  )
  #
  #
  #
  # DesktopSpec/DesktopInfo
  #   *DesktopBase
  #        +AccessGroupId
  #   &DesktopSettings
  #        DesktopLogoffSettings
  #        DesktopDisplayProtocolSettings
  #               DesktopPCoIPDisplaySettings
  #        DesktopAdobeFlashSettings
  #        DesktopAdobeFlashSettings
  #        DesktopMirageConfigurationOverrides
  #   DesktopAutomatedDesktopSpec/DesktopAutomatedDesktopData
  #        */+VirtualCenterId
  #        DesktopUserAssignment
  #        DesktopVirtualMachineNamingSpec/DesktopVirtualMachineNamingSettings
  #                DesktopPatternNamingSpec/DesktopPatternNamingSettings
  #                DesktopSpecificNamingSettings/DesktopSpecificNamingSettings
  #        DesktopVirtualCenterProvisioningSettings
  #                DesktopVirtualCenterProvisioningData/virtualCenterProvisioningData
  #                DesktopVirtualCenterStorageSettings
  #                DesktopVirtualCenterNetworkingSettings
  #        DesktopVirtualCenterManagedCommonSettings
  #        DesktopCustomizationSettings
  #                ViewComposerDomainAdministratorId
  #                ADContainerId
  #                DesktopNoCustomizationSettings
  #                DesktopSysprepCustomizationSettings
  #                      CustomizationSpecId
  #                DesktopQuickprepCustomizationSettings
  #                      DesktopQuickprepCustomizationSettings
  #                DesktopCloneprepCustomizationSettings
  #                      InstantCloneEngineDomainAdministratorId
  #   DesktopManualDesktopSpec
  #        DesktopUserAssignment
  #        MachineId[]
  #        VirtualCenterId
  #        DesktopViewStorageAcceleratorSettings
  #                 DesktopBlackoutTime[]
  #        DesktopVirtualCenterManagedCommonSettings
  #   DesktopRDSDesktopSpec
  #        DesktopBlackoutTime[]
  #   DesktopGlobalEntitlementData
  #        GlobalEntitlementId


  #  retrieve values from the pipeline  ... takes care of "get-hvpool -poolName <name> | New-HVPool -poolName <name> common parameters
  #

  begin {
    $services = Get-ViewAPIService -hvServer $hvServer
    if ($null -eq $services) {
      Write-Error "Could not retrieve ViewApi services from connection object"
      break
    }
  }

  process {
    $confirmFlag = Get-HVConfirmFlag -keys $PsBoundParameters.Keys
    if ($poolName) {
      try {
        $sourcePool = Get-HVPoolSummary -poolName $poolName -suppressInfo $true -hvServer $hvServer
      } catch {
        Write-Error "Make sure Get-HVPoolSummary advanced function is loaded, $_"
        break
      }
      if ($sourcePool) {
        Write-Error "Pool with name: [$poolName] already exists"
        break
      }
    }

    if ($spec) {
      try {
        $jsonObject = Get-JsonObject -specFile $spec
      } catch {
        Write-Error "Json file exception, $_"
        break
      }

	  try {
	    #Json object validation
        Test-HVPoolSpec -PoolObject $jsonObject
      } catch {
        Write-Error "Json object validation failed, $_"
        break
      }
      if ($jsonObject.type -eq "AUTOMATED") {
        $poolType = 'AUTOMATED'
        if ($null -ne $jsonObject.AutomatedDesktopSpec.VirtualCenter) {
          $vCenter = $jsonObject.AutomatedDesktopSpec.VirtualCenter
        }
        $userAssignment = $jsonObject.AutomatedDesktopSpec.userAssignment.userAssignment
        $automaticAssignment = $jsonObject.AutomatedDesktopSpec.userAssignment.AutomaticAssignment
        $netBiosName = $jsonObject.NetBiosName
        if (!$jsonObject.AutomatedDesktopSpec.CustomizationSettings.AdContainer) {
          Write-Host "adContainer was empty using CN=Computers"
        } else {
          $adContainer = $jsonObject.AutomatedDesktopSpec.CustomizationSettings.AdContainer
        }
        $custType = $jsonObject.AutomatedDesktopSpec.CustomizationSettings.CustomizationType
        $reusePreExistingAccounts = $jsonObject.AutomatedDesktopSpec.CustomizationSettings.reusePreExistingAccounts
        if ($jsonObject.AutomatedDesktopSpec.ProvisioningType -eq "INSTANT_CLONE_ENGINE") {
          $InstantClone = $true
          if ($null -ne $jsonObject.AutomatedDesktopSpec.CustomizationSettings.CloneprepCustomizationSettings) {
            $domainAdmin = $jsonObject.AutomatedDesktopSpec.CustomizationSettings.CloneprepCustomizationSettings.InstantCloneEngineDomainAdministrator
            $powerOffScriptName = $jsonObject.AutomatedDesktopSpec.CustomizationSettings.CloneprepCustomizationSettings.PowerOffScriptName
            $powerOffScriptParameters = $jsonObject.AutomatedDesktopSpec.CustomizationSettings.CloneprepCustomizationSettings.PowerOffScriptParameters
            $postSynchronizationScriptName = $jsonObject.AutomatedDesktopSpec.CustomizationSettings.CloneprepCustomizationSettings.PostSynchronizationScriptName
            $postSynchronizationScriptParameters = $jsonObject.AutomatedDesktopSpec.CustomizationSettings.CloneprepCustomizationSettings.PostSynchronizationScriptParameters
          }
        } else {
          if ($jsonObject.AutomatedDesktopSpec.ProvisioningType -eq "VIEW_COMPOSER") {
            $LinkedClone = $true
            $domainAdmin = $jsonObject.AutomatedDesktopSpec.CustomizationSettings.domainAdministrator
          } elseIf($jsonObject.AutomatedDesktopSpec.ProvisioningType -eq "VIRTUAL_CENTER") {
            $FullClone = $true
          }
          switch ($custType) {
            'SYS_PREP' {
              $sysprepCustomizationSettings = $jsonObject.AutomatedDesktopSpec.CustomizationSettings.SysprepCustomizationSettings
              $sysPrepName = $sysprepCustomizationSettings.customizationSpec
            }
            'QUICK_PREP' {
              $powerOffScriptName = $jsonObject.AutomatedDesktopSpec.CustomizationSettings.QuickprepCustomizationSettings.PowerOffScriptName
              $powerOffScriptParameters = $jsonObject.AutomatedDesktopSpec.CustomizationSettings.QuickprepCustomizationSettings.PowerOffScriptParameters
              $postSynchronizationScriptName = $jsonObject.AutomatedDesktopSpec.CustomizationSettings.QuickprepCustomizationSettings.PostSynchronizationScriptName
              $postSynchronizationScriptParameters = $jsonObject.AutomatedDesktopSpec.CustomizationSettings.QuickprepCustomizationSettings.PostSynchronizationScriptParameters
            }
            'NONE' {
              $doNotPowerOnVMsAfterCreation = $jsonObject.AutomatedDesktopSpec.CustomizationSettings.NoCustomizationSettings.DoNotPowerOnVMsAfterCreation
            }
          }
        }
        $namingMethod = $jsonObject.AutomatedDesktopSpec.VmNamingSpec.NamingMethod
        $transparentPageSharingScope = $jsonObject.AutomatedDesktopSpec.virtualCenterManagedCommonSettings.TransparentPageSharingScope
        if ($namingMethod -eq "PATTERN") {
          if ($NamingPattern -eq '{n:fixed=4}') {
            $namingPattern = $jsonObject.AutomatedDesktopSpec.VmNamingSpec.patternNamingSettings.namingPattern
          }
          $maximumCount = $jsonObject.AutomatedDesktopSpec.VmNamingSpec.patternNamingSettings.maxNumberOfMachines
          $spareCount = $jsonObject.AutomatedDesktopSpec.VmNamingSpec.patternNamingSettings.numberOfSpareMachines
          $provisioningTime = $jsonObject.AutomatedDesktopSpec.VmNamingSpec.patternNamingSettings.provisioningTime
          if ($provisioningTime -eq 'ON_DEMAND') { $MinimumCount = $jsonObject.AutomatedDesktopSpec.VmNamingSpec.patternNamingSettings.MinNumberOfMachines }
        } else {
          $specificNames = $jsonObject.AutomatedDesktopSpec.VmNamingSpec.specifiedNames
          $startInMaintenanceMode = $jsonObject.AutomatedDesktopSpec.VmNamingSpec.SpecificNamingSpec.startMachinesInMaintenanceMode
          $numUnassignedMachinesKeptPoweredOn = $jsonObject.AutomatedDesktopSpec.VmNamingSpec.SpecificNamingSpec.numUnassignedMachinesKeptPoweredOn
        }
        $enableProvisioning = $jsonObject.AutomatedDesktopSpec.VirtualCenterProvisioningSettings.EnableProvisioning
        $stopProvisioningOnError = $jsonObject.AutomatedDesktopSpec.VirtualCenterProvisioningSettings.stopProvisioningOnError
        $minReady = $jsonObject.AutomatedDesktopSpec.VirtualCenterProvisioningSettings.minReadyVMsOnVComposerMaintenance
        if ($null -ne $jsonObject.AutomatedDesktopSpec.VirtualCenterProvisioningSettings.VirtualCenterProvisioningData.Template) {
          $template = $jsonObject.AutomatedDesktopSpec.VirtualCenterProvisioningSettings.VirtualCenterProvisioningData.Template
        }
        if ($null -ne $jsonObject.AutomatedDesktopSpec.VirtualCenterProvisioningSettings.VirtualCenterProvisioningData.ParentVm) {
          $parentVM = $jsonObject.AutomatedDesktopSpec.VirtualCenterProvisioningSettings.VirtualCenterProvisioningData.ParentVm
        }
        if ($null -ne $jsonObject.AutomatedDesktopSpec.VirtualCenterProvisioningSettings.VirtualCenterProvisioningData.Snapshot) {
          $snapshotVM = $jsonObject.AutomatedDesktopSpec.VirtualCenterProvisioningSettings.VirtualCenterProvisioningData.Snapshot
        }
        if ($null -ne $jsonObject.AutomatedDesktopSpec.VirtualCenterProvisioningSettings.addVirtualTPM) {
          $addVirtualTPM = $jsonObject.AutomatedDesktopSpec.VirtualCenterProvisioningSettings.addVirtualTPM
        }
        $dataCenter = $jsonObject.AutomatedDesktopSpec.VirtualCenterProvisioningSettings.VirtualCenterProvisioningData.dataCenter
        $vmFolder = $jsonObject.AutomatedDesktopSpec.VirtualCenterProvisioningSettings.VirtualCenterProvisioningData.VmFolder
        $hostOrCluster = $jsonObject.AutomatedDesktopSpec.VirtualCenterProvisioningSettings.VirtualCenterProvisioningData.HostOrCluster
        $resourcePool = $jsonObject.AutomatedDesktopSpec.VirtualCenterProvisioningSettings.VirtualCenterProvisioningData.ResourcePool


        $dataStoreList = $jsonObject.AutomatedDesktopSpec.VirtualCenterProvisioningSettings.VirtualCenterStorageSettings.Datastores
        foreach ($dtStore in $dataStoreList) {
          $datastores += $dtStore.Datastore
          $storageOvercommit += $dtStore.StorageOvercommit
        }
        $useVSan = $jsonObject.AutomatedDesktopSpec.VirtualCenterProvisioningSettings.VirtualCenterStorageSettings.UseVSan
        if ($LinkedClone -or $InstantClone) {
            $useSeparateDatastoresReplicaAndOSDisks = $jsonObject.AutomatedDesktopSpec.VirtualCenterProvisioningSettings.VirtualCenterStorageSettings.ViewComposerStorageSettings.UseSeparateDatastoresReplicaAndOSDisks
            if ($useSeparateDatastoresReplicaAndOSDisks) {
                $replicaDiskDatastore = $jsonObject.AutomatedDesktopSpec.VirtualCenterProvisioningSettings.VirtualCenterStorageSettings.ViewComposerStorageSettings.replicaDiskDatastore
            }
            if ($LinkedClone) {
                #For Instant clone desktops, this setting can only be set to false
                $useNativeSnapshots = $jsonObject.AutomatedDesktopSpec.VirtualCenterProvisioningSettings.VirtualCenterStorageSettings.ViewComposerStorageSettings.useNativeSnapshots
                $reclaimVmDiskSpace = $jsonObject.AutomatedDesktopSpec.VirtualCenterProvisioningSettings.VirtualCenterStorageSettings.ViewComposerStorageSettings.spaceReclamationSettings.reclaimVmDiskSpace
                if ($reclaimVmDiskSpace) {
                    $reclamationThresholdGB = $jsonObject.AutomatedDesktopSpec.VirtualCenterProvisioningSettings.VirtualCenterStorageSettings.ViewComposerStorageSettings.spaceReclamationSettings.reclamationThresholdGB
                }
                if ($null -ne $jsonObject.AutomatedDesktopSpec.VirtualCenterProvisioningSettings.VirtualCenterStorageSettings.ViewComposerStorageSettings.PersistentDiskSettings) {
                    $redirectWindowsProfile = $jsonObject.AutomatedDesktopSpec.VirtualCenterProvisioningSettings.VirtualCenterStorageSettings.ViewComposerStorageSettings.PersistentDiskSettings.RedirectWindowsProfile
                    if ($redirectWindowsProfile) {
                        $useSeparateDatastoresPersistentAndOSDisks = $jsonObject.AutomatedDesktopSpec.VirtualCenterProvisioningSettings.VirtualCenterStorageSettings.ViewComposerStorageSettings.PersistentDiskSettings.UseSeparateDatastoresPersistentAndOSDisks
                    }
                    $dataStoreList = $jsonObject.AutomatedDesktopSpec.VirtualCenterProvisioningSettings.VirtualCenterStorageSettings.ViewComposerStorageSettings.PersistentDiskSettings.persistentDiskDatastores
                    foreach ($dtStore in $dataStoreList) {
                        $persistentDiskDatastores += $dtStore.Datastore
                        $PersistentDiskStorageOvercommit += $dtStore.StorageOvercommit
                    }
                    if ($null -ne $jsonObject.AutomatedDesktopSpec.VirtualCenterProvisioningSettings.VirtualCenterStorageSettings.ViewComposerStorageSettings.PersistentDiskSettings.DiskSizeMB) {
                        $diskSizeMB = $jsonObject.AutomatedDesktopSpec.VirtualCenterProvisioningSettings.VirtualCenterStorageSettings.ViewComposerStorageSettings.PersistentDiskSettings.DiskSizeMB
                    }
                    if ($null -ne $jsonObject.AutomatedDesktopSpec.VirtualCenterProvisioningSettings.VirtualCenterStorageSettings.ViewComposerStorageSettings.PersistentDiskSettings.DiskDriveLetter) {
                        $diskDriveLetter = $jsonObject.AutomatedDesktopSpec.VirtualCenterProvisioningSettings.VirtualCenterStorageSettings.ViewComposerStorageSettings.PersistentDiskSettings.DiskDriveLetter
                    }
                }
                if ($null -ne $jsonObject.AutomatedDesktopSpec.VirtualCenterProvisioningSettings.VirtualCenterStorageSettings.ViewComposerStorageSettings.nonPersistentDiskSettings) {
                    $redirectDisposableFiles = $jsonObject.AutomatedDesktopSpec.VirtualCenterProvisioningSettings.VirtualCenterStorageSettings.ViewComposerStorageSettings.NonPersistentDiskSettings.RedirectDisposableFiles
                    if ($null -ne $jsonObject.AutomatedDesktopSpec.VirtualCenterProvisioningSettings.VirtualCenterStorageSettings.ViewComposerStorageSettings.NonPersistentDiskSettings.DiskSizeMB) {
                        $nonPersistentDiskSizeMB = $jsonObject.AutomatedDesktopSpec.VirtualCenterProvisioningSettings.VirtualCenterStorageSettings.ViewComposerStorageSettings.NonPersistentDiskSettings.DiskSizeMB
                    }
                    if ($null -ne $jsonObject.AutomatedDesktopSpec.VirtualCenterProvisioningSettings.VirtualCenterStorageSettings.ViewComposerStorageSettings.NonPersistentDiskSettings.DiskDriveLetter) {
                        $nonPersistentDiskDriveLetter = $jsonObject.AutomatedDesktopSpec.VirtualCenterProvisioningSettings.VirtualCenterStorageSettings.ViewComposerStorageSettings.NonPersistentDiskSettings.DiskDriveLetter
                    }
                }
            } else {
                $useNativeSnapshots = $false
                $redirectWindowsProfile = $false
            }
        }
        if ($null -ne $jsonObject.AutomatedDesktopSpec.VirtualCenterProvisioningSettings.VirtualCenterStorageSettings.viewStorageAcceleratorSettings) {
            $useViewStorageAccelerator = $jsonObject.AutomatedDesktopSpec.VirtualCenterProvisioningSettings.VirtualCenterStorageSettings.viewStorageAcceleratorSettings.UseViewStorageAccelerator
            if ($useViewStorageAccelerator -and $LinkedClone) {
                $viewComposerDiskTypes = $jsonObject.AutomatedDesktopSpec.VirtualCenterProvisioningSettings.VirtualCenterStorageSettings.viewStorageAcceleratorSettings.ViewComposerDiskTypes
            }
            if (! $InstantClone -and $useViewStorageAccelerator) {
                $regenerateViewStorageAcceleratorDays = $jsonObject.AutomatedDesktopSpec.VirtualCenterProvisioningSettings.VirtualCenterStorageSettings.viewStorageAcceleratorSettings.RegenerateViewStorageAcceleratorDays
                if ($null -ne $jsonObject.AutomatedDesktopSpec.VirtualCenterProvisioningSettings.VirtualCenterStorageSettings.viewStorageAcceleratorSettings.blackoutTimes) {
                    $blackoutTimesList =$jsonObject.AutomatedDesktopSpec.VirtualCenterProvisioningSettings.VirtualCenterStorageSettings.viewStorageAcceleratorSettings.blackoutTimes
                    foreach ($blackout in $blackoutTimesList) {
                        $blackoutObj  = New-Object VMware.Hv.DesktopBlackoutTime
                        $blackoutObj.Days = $blackout.Days
                        $blackoutObj.StartTime = $blackout.StartTime
                        $blackoutObj.EndTime = $blackout.EndTime
                        $blackoutTimes += $blackoutObj
                    }
                }
            }
        }
        <# ToDo Nic
        if ($null -ne $jsonObject.AutomatedDesktopSpec.VirtualCenterProvisioningSettings.nics) {
            $nicList = $jsonObject.AutomatedDesktopSpec.VirtualCenterProvisioningSettings.nics
            foreach($nicObj in  $nicList) {
                $nic = New-Object VMware.Hv.DesktopNetworkInterfaceCardSettings
            }
        }
        #>
      } elseIf ($jsonObject.type -eq "MANUAL") {
        $MANUAL = $true
        $poolType = 'MANUAL'
	if ($null -ne $jsonObject.ManualDesktopSpec.VirtualCenter) {
          $vCenter = $jsonObject.ManualDesktopSpec.VirtualCenter
        }
        $userAssignment = $jsonObject.ManualDesktopSpec.userAssignment.userAssignment
        $automaticAssignment = $jsonObject.ManualDesktopSpec.userAssignment.AutomaticAssignment
        $source = $jsonObject.ManualDesktopSpec.source
        $VMs = $jsonObject.ManualDesktopSpec.Machines
        foreach ($vmObj in $VMs) {
          $VM += $vmObj.Machine
        }

      } else {
        $RDS = $true
        $poolType = 'RDS'
        $farm = $jsonObject.RdsDesktopSpec.farm
      }
      $poolDisplayName = $jsonObject.base.DisplayName
      $description = $jsonObject.base.Description
      $accessGroup = $jsonObject.base.AccessGroup
      if (!$poolName) {
        $poolName = $jsonObject.base.name
      }

	  <#
      # Populate desktop settings
      #>
      if ($null -ne $jsonObject.DesktopSettings) {
          $Enable = $jsonObject.DesktopSettings.enabled
          $deleting = $jsonObject.DesktopSettings.deleting
          if ($null -ne $jsonObject.DesktopSettings.connectionServerRestrictions) {
             $ConnectionServerRestrictions = $jsonObject.DesktopSettings.connectionServerRestrictions
          }
          if ($poolType -ne 'RDS') {
            if ($null -ne $jsonObject.DesktopSettings.logoffSettings) {
              $powerPolicy = $jsonObject.DesktopSettings.logoffSettings.powerPolicy
              $automaticLogoffPolicy = $jsonObject.DesktopSettings.logoffSettings.automaticLogoffPolicy
              if ($null -ne $jsonObject.DesktopSettings.logoffSettings.automaticLogoffMinutes) {
                $automaticLogoffMinutes = $jsonObject.DesktopSettings.logoffSettings.automaticLogoffMinutes
              }
              $allowUsersToResetMachines = $jsonObject.DesktopSettings.logoffSettings.allowUsersToResetMachines
              $allowMultipleSessionsPerUser = $jsonObject.DesktopSettings.logoffSettings.allowMultipleSessionsPerUser
              $deleteOrRefreshMachineAfterLogoff = $jsonObject.DesktopSettings.logoffSettings.deleteOrRefreshMachineAfterLogoff
              $refreshOsDiskAfterLogoff = $jsonObject.DesktopSettings.logoffSettings.refreshOsDiskAfterLogoff
              if ($jsonObject.DesktopSettings.logoffSettings.refreshPeriodDaysForReplicaOsDisk) {
                $refreshPeriodDaysForReplicaOsDisk = $jsonObject.DesktopSettings.logoffSettings.refreshPeriodDaysForReplicaOsDisk
              }
              if ($jsonObject.DesktopSettings.logoffSettings.refreshThresholdPercentageForReplicaOsDisk) {
               $refreshThresholdPercentageForReplicaOsDisk = $jsonObject.DesktopSettings.logoffSettings.refreshThresholdPercentageForReplicaOsDisk
              }
            }

            if ($null -ne $jsonObject.DesktopSettings.displayProtocolSettings) {
              $supportedDisplayProtocols = $jsonObject.DesktopSettings.displayProtocolSettings.supportedDisplayProtocols
              $defaultDisplayProtocol = $jsonObject.DesktopSettings.displayProtocolSettings.defaultDisplayProtocol
              $allowUsersToChooseProtocol = $jsonObject.DesktopSettings.displayProtocolSettings.allowUsersToChooseProtocol
              if ($null -ne $jsonObject.DesktopSettings.displayProtocolSettings.pcoipDisplaySettings) {
                $renderer3D = $jsonObject.DesktopSettings.displayProtocolSettings.pcoipDisplaySettings.renderer3D
                $enableGRIDvGPUs = $jsonObject.DesktopSettings.displayProtocolSettings.pcoipDisplaySettings.enableGRIDvGPUs
                $VGPUGridProfile = $jsonObject.DesktopSettings.DisplayProtocolSettings.PcoipDisplaySettings.VGPUGridProfile
                if ($jsonObject.DesktopSettings.displayProtocolSettings.pcoipDisplaySettings.vRamSizeMB) {
                 $vRamSizeMB = $jsonObject.DesktopSettings.displayProtocolSettings.pcoipDisplaySettings.vRamSizeMB
                }
                $maxNumberOfMonitors = $jsonObject.DesktopSettings.displayProtocolSettings.pcoipDisplaySettings.maxNumberOfMonitors
                $maxResolutionOfAnyOneMonitor = $jsonObject.DesktopSettings.displayProtocolSettings.pcoipDisplaySettings.maxResolutionOfAnyOneMonitor
              }
              $enableHTMLAccess = $jsonObject.DesktopSettings.displayProtocolSettings.enableHTMLAccess
	      $enableCollaboration = $jsonObject.DesktopSettings.displayProtocolSettings.EnableCollaboration
            }

            if ($null -ne $jsonObject.DesktopSettings.mirageConfigurationOverrides) {
              $overrideGlobalSetting = $jsonObject.DesktopSettings.mirageConfigurationOverrides.overrideGlobalSetting
              if ($jsonObject.DesktopSettings.mirageConfigurationOverrides.enabled) {
               $enabled = $jsonObject.DesktopSettings.mirageConfigurationOverrides.enabled
              }
              if ($jsonObject.DesktopSettings.mirageConfigurationOverrides.url) {
               $url = $jsonObject.DesktopSettings.mirageConfigurationOverrides.url
              }
            }
          }
          if ($null -ne $jsonObject.DesktopSettings.flashSettings) {
             $quality = $jsonObject.DesktopSettings.flashSettings.quality
             $throttling = $jsonObject.DesktopSettings.flashSettings.throttling
          }
          #desktopsettings ends
        }
        if ($null -ne $jsonObject.GlobalEntitlementData) {
            $globalEntitlement = $jsonObject.GlobalEntitlementData.globalEntitlement
        }
    }

    if ($PSCmdlet.MyInvocation.ExpectingInput -or $clonePool) {

      if ($clonePool -and ($clonePool.GetType().name -eq 'DesktopSummaryView')) {
        $clonePool = Get-HVPool -poolName $clonePool.desktopsummarydata.name
      } elseIf (!($clonePool -and ($clonePool.GetType().name -eq 'DesktopInfo'))) {
        Write-Error "In pipeline did not get object of expected type DesktopSummaryView/DesktopInfo"
        return
      }
      $poolType = $clonePool.type
      $desktopBase = $clonePool.base
      $desktopSettings = $clonePool.DesktopSettings
      $provisioningType = $clonePool.source
      if ($clonePool.AutomatedDesktopData) {
        $provisioningType = $clonePool.AutomatedDesktopData.ProvisioningType
        $virtualCenterID = $clonePool.AutomatedDesktopData.VirtualCenter
        $desktopUserAssignment = $clonePool.AutomatedDesktopData.userAssignment
        $desktopVirtualMachineNamingSpec = $clonePool.AutomatedDesktopData.VmNamingSettings
        $DesktopVirtualCenterProvisioningSettings = $clonePool.AutomatedDesktopData.VirtualCenterProvisioningSettings
        $DesktopVirtualCenterProvisioningData = $DesktopVirtualCenterProvisioningSettings.VirtualCenterProvisioningData
        $DesktopVirtualCenterStorageSettings = $DesktopVirtualCenterProvisioningSettings.VirtualCenterStorageSettings
        $DesktopVirtualCenterNetworkingSettings = $DesktopVirtualCenterProvisioningSettings.VirtualCenterNetworkingSettings
        $DesktopVirtualCenterManagedCommonSettings = $clonePool.AutomatedDesktopData.virtualCenterManagedCommonSettings
        $DesktopCustomizationSettings = $clonePool.AutomatedDesktopData.CustomizationSettings
        $CurrentImageState =`
          $clonePool.AutomatedDesktopData.provisioningStatusData.instantCloneProvisioningStatusData.instantCloneCurrentImageState
      }
	  elseIf ($clonePool.ManualDesktopData) {
        if (! $VM) {
            Write-Error "ManualDesktop pool cloning requires list of machines, parameter VM is empty"
            break
        }
        $source = $clonePool.source
        $virtualCenterID = $clonePool.ManualDesktopData.VirtualCenter
        $desktopUserAssignment = $clonePool.ManualDesktopData.userAssignment
        $desktopVirtualCenterStorageSettings = $clonePool.ManualDesktopData.viewStorageAcceleratorSettings
        $desktopVirtualCenterManagedCommonSettings = $clonePool.ManualDesktopData.virtualCenterManagedCommonSettings
      }
	  elseIf($clonePool.RdsDesktopData) {
        if (! $Farm) {
            Write-Error "RdsDesktop pool cloning requires farm, parameter Farm is not set"
            break
        }
      }
      if ($provisioningType -eq 'INSTANT_CLONE_ENGINE' -and $poolType -eq 'AUTOMATED' -and  $CurrentImageState -ne 'READY') {
        Write-Error "Instant clone pool's Current Image State should be in 'READY' state, otherwise cloning is not supported"
        break
      }
    } else {

      if ($InstantClone) {
        $poolType = 'AUTOMATED'
        $provisioningType = 'INSTANT_CLONE_ENGINE'
      }
      elseIf ($LinkedClone) {
        $poolType = 'AUTOMATED'
        $provisioningType = 'VIEW_COMPOSER'
      }
      elseIf ($FullClone) {
        $poolType = 'AUTOMATED'
        $provisioningType = 'VIRTUAL_CENTER'
      }
      elseIf ($Manual) { $poolType = 'MANUAL' }
      elseIf ($RDS) { $poolType = 'RDS' }

    }
    $script:desktopSpecObj = Get-DesktopSpec -poolType $poolType -provisioningType $provisioningType -namingMethod $namingMethod

    #
    # accumulate properties that are shared among various type
    #

    if ($poolType -ne 'RDS') {
      #
      # vCenter: if $vcenterID is defined, then this is a clone
      #           if the user specificed the name, then find it from the list
      #          if none specified, then automatically use the vCenter if there is only one
      #
      # skips Unmanged Manual pool for VC check
      if (! (($poolType -eq 'MANUAL') -and ($source  -eq 'UNMANAGED'))) {

          if (!$virtualCenterID) {
            $virtualCenterID = Get-VcenterID -services $services -vCenter $vCenter
          }
          if ($null -eq $virtualCenterID) {
            $handleException = $true
            break
          }
      }
      #
      # populate user assignment
      #
      if (!$desktopUserAssignment) {
        if ($desktopSpecObj.AutomatedDesktopSpec) {
          $desktopSpecObj.AutomatedDesktopSpec.userAssignment.userAssignment = $userAssignment
          $desktopSpecObj.AutomatedDesktopSpec.userAssignment.AutomaticAssignment = $automaticAssignment
          $desktopUserAssignment = $desktopSpecObj.AutomatedDesktopSpec.userAssignment
        } else {
          $desktopSpecObj.ManualDesktopSpec.userAssignment.userAssignment = $userAssignment
          $desktopSpecObj.ManualDesktopSpec.userAssignment.AutomaticAssignment = $automaticAssignment
          $desktopUserAssignment = $desktopSpecObj.ManualDesktopSpec.userAssignment
        }

      }
      #
      # transparentPageSharingScope
      #
      if (!$desktopVirtualCenterManagedCommonSettings) {
        if ($desktopSpecObj.AutomatedDesktopSpec) {
          $desktopSpecObj.AutomatedDesktopSpec.virtualCenterManagedCommonSettings.TransparentPageSharingScope = $transparentPageSharingScope
          $desktopVirtualCenterManagedCommonSettings = $desktopSpecObj.AutomatedDesktopSpec.virtualCenterManagedCommonSettings
        } else {
          $desktopSpecObj.ManualDesktopSpec.virtualCenterManagedCommonSettings.TransparentPageSharingScope = $transparentPageSharingScope
          $desktopVirtualCenterManagedCommonSettings = $desktopSpecObj.ManualDesktopSpec.virtualCenterManagedCommonSettings
        }
      }
    }
    #
    # build out the infrastructure based on type of provisioning
    #
    switch ($poolType)
    {
      'RDS' {
        <#
            Query FarmId from Farm Name
        #>
        $QueryFilterEquals = New-Object VMware.Hv.QueryFilterEquals
        $QueryFilterEquals.memberName = 'data.name'
        $QueryFilterEquals.value = $farm
        $defn = New-Object VMware.Hv.QueryDefinition
        $defn.queryEntityType = 'FarmSummaryView'
        $defn.Filter = $QueryFilterEquals
        $query_service_helper = New-Object VMware.Hv.QueryServiceService
        $queryResults = $query_service_helper.QueryService_Query($services,$defn)
        if ($queryResults.results.Count -eq 0) {
          Write-Error "No farm found with name: [$farm]"
          return
        }
        $farmID = $queryResults.results.id
        $desktopSpecObj.RdsDesktopSpec.farm = $farmID
      }
      'MANUAL' {
        [VMware.Hv.MachineId[]]$machineList = $null
        $desktopSpecObj.ManualDesktopSpec.source = $source
        if ($source -eq 'VIRTUAL_CENTER') {
          # Get vCenter VMs
          $vmTable = @{}
          $vm | ForEach-Object { $vmTable[$_] = $_ }
          $virtual_machine_helper = New-Object VMware.Hv.VirtualMachineService
          $machineId = ($virtual_machine_helper.VirtualMachine_List($services,$virtualCenterId) | Where-Object { $vmTable.Contains($_.name) } | Select-Object -Property Id)
          $machineList += $machineId.id
          $desktopSpecObj.ManualDesktopSpec.VirtualCenter = $virtualCenterID
        } else {
          # Get Physical Regstered VMs
          $machineList = Get-RegisteredPhysicalMachine -services $services -machinesList $VM
        }
        $desktopSpecObj.ManualDesktopSpec.Machines = $machineList
        if ($desktopUserAssignment) {
            $desktopSpecObj.ManualDesktopSpec.userAssignment = $desktopUserAssignment
        }
      }
      default {
        if (!$desktopVirtualMachineNamingSpec) {
          $desktopSpecObj.AutomatedDesktopSpec.VmNamingSpec.NamingMethod = $namingMethod
          if ($namingMethod -eq 'PATTERN') {
            $desktopSpecObj.AutomatedDesktopSpec.VmNamingSpec.patternNamingSettings.namingPattern = $namingPattern
            $desktopSpecObj.AutomatedDesktopSpec.VmNamingSpec.patternNamingSettings.maxNumberOfMachines = $maximumCount
            $desktopSpecObj.AutomatedDesktopSpec.VmNamingSpec.patternNamingSettings.numberOfSpareMachines = $spareCount
            $desktopSpecObj.AutomatedDesktopSpec.VmNamingSpec.patternNamingSettings.provisioningTime = $provisioningTime

            if ($provisioningTime -eq 'ON_DEMAND') { $desktopSpecObj.AutomatedDesktopSpec.VmNamingSpec.patternNamingSettings.minNumberOfMachines = $minimumCount }
          } else {
            $desktopSpecifiedName = @()
            $specificNames | ForEach-Object { $desktopSpecifiedName += New-Object VMware.Hv.DesktopSpecifiedName -Property @{ 'vmName' = $_; } }
            $desktopSpecObj.AutomatedDesktopSpec.VmNamingSpec.SpecificNamingSpec.specifiedNames = $desktopSpecifiedName
            $desktopSpecObj.AutomatedDesktopSpec.VmNamingSpec.SpecificNamingSpec.startMachinesInMaintenanceMode = $startInMaintenanceMode
            $desktopSpecObj.AutomatedDesktopSpec.VmNamingSpec.SpecificNamingSpec.numUnassignedMachinesKeptPoweredOn = $numUnassignedMachinesKeptPoweredOn
          }
        } else {
          $vmNamingSpec = New-Object VMware.Hv.DesktopVirtualMachineNamingSpec
          if ($desktopVirtualMachineNamingSpec.NamingMethod -eq 'PATTERN') {
            $vmNamingSpec.NamingMethod = 'PATTERN'
            $vmNamingSpec.patternNamingSettings = $desktopVirtualMachineNamingSpec.patternNamingSettings
            $vmNamingSpec.patternNamingSettings.namingPattern = $namingPattern
          } else {
            $desktopSpecifiedName = @()
            $specificNames | ForEach-Object { $desktopSpecifiedName += New-Object VMware.Hv.DesktopSpecifiedName -Property @{ 'vmName' = $_; } }
            $vmNamingSpec.NamingMethod = 'SPECIFIED'
            $vmNamingSpec.SpecificNamingSpec = New-Object VMware.Hv.DesktopSpecificNamingSpec
            $vmNamingSpec.SpecificNamingSpec.numUnassignedMachinesKeptPoweredOn = $desktopVirtualMachineNamingSpec.specificNamingSettings.numUnassignedMachinesKeptPoweredOn
            $vmNamingSpec.SpecificNamingSpec.startMachinesInMaintenanceMode = $desktopVirtualMachineNamingSpec.specificNamingSettings.startMachinesInMaintenanceMode
            $vmNamingSpec.SpecificNamingSpec.specifiedNames = $desktopSpecifiedName
          }

        }

        #
        # build the VM LIST
        #
        $handleException = $false
        try {
          $desktopVirtualCenterProvisioningData = Get-HVPoolProvisioningData -vc $virtualCenterID -vmObject $desktopVirtualCenterProvisioningData
          $hostClusterId = $desktopVirtualCenterProvisioningData.HostOrCluster
          $desktopVirtualCenterStorageSettings = Get-HVPoolStorageObject -hostClusterIds $hostClusterId -storageObject $desktopVirtualCenterStorageSettings
          $DesktopVirtualCenterNetworkingSettings = Get-HVPoolNetworkSetting -networkObject $DesktopVirtualCenterNetworkingSettings
          $desktopCustomizationSettings = Get-HVPoolCustomizationSetting -vc $virtualCenterID -customObject $desktopCustomizationSettings
        } catch {
          $handleException = $true
          Write-Error "Failed to create Pool with error: $_"
          break
        }

        if (! $DesktopVirtualCenterProvisioningSettings) {
          $desktopSpecObj.AutomatedDesktopSpec.VirtualCenterProvisioningSettings.enableProvisioning = $enableProvisioning
          $desktopSpecObj.AutomatedDesktopSpec.VirtualCenterProvisioningSettings.stopProvisioningOnError = $stopProvisioningOnError
          $desktopSpecObj.AutomatedDesktopSpec.VirtualCenterProvisioningSettings.minReadyVMsOnVComposerMaintenance = $minReady
          $desktopSpecObj.AutomatedDesktopSpec.VirtualCenterProvisioningSettings.VirtualCenterProvisioningData = $desktopVirtualCenterProvisioningData
          $desktopSpecObj.AutomatedDesktopSpec.VirtualCenterProvisioningSettings.VirtualCenterStorageSettings = $desktopVirtualCenterStorageSettings
          $desktopSpecObj.AutomatedDesktopSpec.VirtualCenterProvisioningSettings.VirtualCenterNetworkingSettings = $DesktopVirtualCenterNetworkingSettings
          $desktopSpecObj.AutomatedDesktopSpec.VirtualCenterProvisioningSettings.AddVirtualTPM = $AddVirtualTPM
          $desktopSpecObj.AutomatedDesktopSpec.CustomizationSettings = $desktopCustomizationSettings
          $desktopSpecObj.AutomatedDesktopSpec.ProvisioningType = $provisioningType
          $desktopSpecObj.AutomatedDesktopSpec.VirtualCenter = $virtualCenterID
        }
        else {
          $DesktopVirtualCenterProvisioningSettings.VirtualCenterProvisioningData = $desktopVirtualCenterProvisioningData
          $DesktopVirtualCenterProvisioningSettings.VirtualCenterStorageSettings = $desktopVirtualCenterStorageSettings
          $DesktopVirtualCenterProvisioningSettings.VirtualCenterNetworkingSettings = $DesktopVirtualCenterNetworkingSettings
          $DesktopVirtualCenterProvisioningSettings.AddVirtualTPM = $AddVirtualTPM

          $DesktopAutomatedDesktopSpec = New-Object VMware.Hv.DesktopAutomatedDesktopSpec
          $DesktopAutomatedDesktopSpec.ProvisioningType = $provisioningType
          $DesktopAutomatedDesktopSpec.VirtualCenter = $virtualCenterID
          $DesktopAutomatedDesktopSpec.userAssignment = $desktopUserAssignment
          $DesktopAutomatedDesktopSpec.VmNamingSpec = $vmNamingSpec
          $DesktopAutomatedDesktopSpec.VirtualCenterProvisioningSettings = $desktopVirtualCenterProvisioningSettings
          $DesktopAutomatedDesktopSpec.virtualCenterManagedCommonSettings = $desktopVirtualCenterManagedCommonSettings
          $DesktopAutomatedDesktopSpec.CustomizationSettings = $desktopCustomizationSettings
        }
      }
    }

    if ($handleException) {
      break
    }
    if (!$desktopBase) {
      $accessGroup_client = New-Object VMware.Hv.AccessGroupService
      $desktopSpecObj.base.AccessGroup = Get-HVAccessGroupID $accessGroup_client.AccessGroup_List($services)
    } else {
      $desktopSpecObj.base = $desktopBase
    }

    $desktopSpecObj.base.name = $poolName
    $desktopSpecObj.base.DisplayName = $poolDisplayName
    $desktopSpecObj.base.Description = $description
    $desktopSpecObj.type = $poolType

	if (! $desktopSettings) {
        $desktopSettingsService = New-Object VMware.Hv.DesktopService
        $desktopSettingsHelper = $desktopSettingsService.getDesktopSettingsHelper()
        $desktopSettingsHelper.setEnabled($Enable)
        $desktopSettingsHelper.setConnectionServerRestrictions($ConnectionServerRestrictions)

        #$desktopLogoffSettings = New-Object VMware.Hv.DesktopLogoffSettings
        $desktopLogoffSettings = $desktopSettingsService.getDesktopLogoffSettingsHelper()
        if ($InstantClone) {
            $deleteOrRefreshMachineAfterLogoff = "DELETE"
            $powerPolicy = "ALWAYS_POWERED_ON"
        }
        $desktopLogoffSettings.setPowerPolicy($powerPolicy)
        $desktopLogoffSettings.setAutomaticLogoffPolicy($automaticLogoffPolicy)
        $desktopLogoffSettings.setAutomaticLogoffMinutes($automaticLogoffMinutes)
        $desktopLogoffSettings.setAllowUsersToResetMachines($allowUsersToResetMachines)
        $desktopLogoffSettings.setAllowMultipleSessionsPerUser($allowMultipleSessionsPerUser)
        $desktopLogoffSettings.setDeleteOrRefreshMachineAfterLogoff($deleteOrRefreshMachineAfterLogoff)
        $desktopLogoffSettings.setRefreshOsDiskAfterLogoff($refreshOsDiskAfterLogoff)
        $desktopLogoffSettings.setRefreshPeriodDaysForReplicaOsDisk($refreshPeriodDaysForReplicaOsDisk)
        if ($refreshThresholdPercentageForReplicaOsDisk -and $refreshOsDiskAfterLogoff -eq "AT_SIZE") {
            $desktopLogoffSettings.setRefreshThresholdPercentageForReplicaOsDisk($refreshThresholdPercentageForReplicaOsDisk)
        }
        if ($poolType -ne 'RDS') {
            $desktopSettingsHelper.setLogoffSettings($desktopLogoffSettings.getDataObject())

            $desktopDisplayProtocolSettings = $desktopSettingsService.getDesktopDisplayProtocolSettingsHelper()
            #setSupportedDisplayProtocols is not exists, because this property cannot be updated.
            $desktopDisplayProtocolSettings.getDataObject().SupportedDisplayProtocols = $supportedDisplayProtocols
            $desktopDisplayProtocolSettings.setDefaultDisplayProtocol($defaultDisplayProtocol)
            $desktopDisplayProtocolSettings.setEnableHTMLAccess($enableHTMLAccess)
	    $desktopDisplayProtocolSettings.setEnableCollaboration($enableCollaboration)
            $desktopDisplayProtocolSettings.setAllowUsersToChooseProtocol($allowUsersToChooseProtocol)

            $desktopPCoIPDisplaySettings = $desktopSettingsService.getDesktopPCoIPDisplaySettingsHelper()
            $desktopPCoIPDisplaySettings.setRenderer3D($renderer3D)
            #setEnableGRIDvGPUs is not exists, because this property cannot be updated.
            $desktopPCoIPDisplaySettings.getDataObject().EnableGRIDvGPUs = $enableGRIDvGPUs
            if ($enableGRIDvGPUs -eq $true -and $renderer3D -ne 'MANAGE_BY_VSPHERE_CLIENT' -and $InstantClone -eq $true) {
              Write-Error "Enabling GRID support requires that 3D rendering be managed by the vSphere client"
              break
            }
            if ($enableGRIDvGPUs -eq $true -and [string]::IsNullOrEmpty($VGPUGridProfile) -eq $true -and $InstantClone -ne $true) {
              Write-Error "Enabling GRID support for Instant clones, this requires a specified VGPUGridProfile"
              break
            } else {
              $desktopPCoIPDisplaySettings.getDataObject().VGPUGridProfile = $VGPUGridProfile
            }
            $desktopPCoIPDisplaySettings.setVRamSizeMB($vRamSizeMB)
            $desktopPCoIPDisplaySettings.setMaxNumberOfMonitors($maxNumberOfMonitors)
            $desktopPCoIPDisplaySettings.setMaxResolutionOfAnyOneMonitor($maxResolutionOfAnyOneMonitor)
            $desktopDisplayProtocolSettings.setPcoipDisplaySettings($desktopPCoIPDisplaySettings.getDataObject())
            $desktopSettingsHelper.setDisplayProtocolSettings($desktopDisplayProtocolSettings.getDataObject())

            $desktopMirageConfigOverrides = $desktopSettingsService.getDesktopMirageConfigurationOverridesHelper()
            $desktopMirageConfigOverrides.setEnabled($enabled)
            $desktopMirageConfigOverrides.setOverrideGlobalSetting($overrideGlobalSetting)
            $desktopMirageConfigOverrides.setUrl($url)
            $desktopSettingsHelper.setMirageConfigurationOverrides($desktopMirageConfigOverrides.getDataObject())
            $desktopSettings = $desktopSettingsHelper.getDataObject()
        }
        $desktopFlashSettings = $desktopSettingsService.getDesktopAdobeFlashSettingsHelper()
        $desktopFlashSettings.setQuality($quality)
        $desktopFlashSettings.setThrottling($throttling)
        $desktopSettingsHelper.setFlashSettings($desktopFlashSettings.getDataObject())
    }

    $desktopSpecObj.DesktopSettings = $desktopSettings
    $info = $services.PodFederation.PodFederation_get()
    if ($globalEntitlement -and ("ENABLED" -eq $info.localPodStatus.status)) {
        $QueryFilterEquals = New-Object VMware.Hv.QueryFilterEquals
        $QueryFilterEquals.memberName = 'base.displayName'
        $QueryFilterEquals.value = $globalEntitlement
        $defn = New-Object VMware.Hv.QueryDefinition
        $defn.queryEntityType = 'GlobalEntitlementSummaryView'
        $defn.Filter = $QueryFilterEquals
        $query_service_helper = New-Object VMware.Hv.QueryServiceService
        try {
            $queryResults = $query_service_helper.QueryService_Query($services,$defn)
            $globalEntitlementid = $queryResults.Results.id
            if ($globalEntitlementid.length -eq 1) {
                $desktopGlobalEntitlementData = New-Object VMware.Hv.DesktopGlobalEntitlementData -Property @{'globalEntitlement'= $globalEntitlementid;}
            }
        }
        catch {
            Write-Host "GlobalEntitlement " $_
        }
    }
    if ($desktopAutomatedDesktopSpec) {
      $desktopSpecObj.AutomatedDesktopSpec = $desktopAutomatedDesktopSpec
    }
    if ($DesktopManualDesktopSpecList) { $desktopSpecObj.ManualDesktopSpec = $DesktopManualDesktopSpecList }
    if ($desktopRDSDesktopSpec) { $desktopSpecObj.RdsDesktopSpec = $RDSDesktopSpec }
    if ($desktopGlobalEntitlementData) { $desktopSpecObj.GlobalEntitlementData = $desktopGlobalEntitlementData }

    # Please uncomment below code, if you want save desktopSpec object to json file
    <#
      $myDebug = convertto-json -InputObject $desktopSpecObj -depth 12
      $myDebug | out-file -filepath c:\temp\copieddesktop.json
    #>
    $desktop_helper = New-Object VMware.Hv.DesktopService
    if (!$confirmFlag -OR  $pscmdlet.ShouldProcess($desktopSpecObj.base.name)) {
      $id = $desktop_helper.Desktop_create($services,$desktopSpecObj)
    } else {
	  try {
	    #DesktopSpec validation
        Test-HVPoolSpec -PoolObject $desktopSpecObj
      } catch {
        Write-Error "DesktopSpec object validation failed, $_"
        break
      }
	}
    return $desktopSpecObj
  }

  end {
    $desktopSpecObj = $null
    [System.gc]::collect()
  }
}

function Get-HVResourceStructure {
<#
.Synopsis
    Output the structure of the resource pools available to a HV.  Primarily this is for debugging

    PS> Get-HVResourceStructure
    vCenter vc.domain.local
    Container DC path /DC/host
    HostOrCluster Servers path /DC/host/Servers
    HostOrCluster VDI path /DC/host/VDI
    ResourcePool Servers path /DC/host/Servers/Resources
    ResourcePool VDI path /DC/host/VDI/Resources
    ResourcePool RP1 path /DC/host/VDI/Resources/RP1
    ResourcePool RP2 path /DC/host/VDI/Resources/RP1/RP2

    Author : Mark Elvers <mark.elvers@tunbury.org>
#>
  param(
    [Parameter(Mandatory = $false)]
    $HvServer = $null
  )
  begin {
    $services = Get-ViewAPIService -hvServer $HvServer
    if ($null -eq $services) {
      Write-Error "Could not retrieve ViewApi services from connection object"
      break
    }
  }
  process {
    $vc_service_helper = New-Object VMware.Hv.VirtualCenterService
    $vcList = $vc_service_helper.VirtualCenter_List($services)
    foreach ($vc in $vcList) {
      Write-Host vCenter $vc.ServerSpec.ServerName
      $datacenterList = @{}
      $parentList = Get-HVBaseImageVmList -vcID $vc.id
      foreach ($possibleParent in $parentList) {
	if (-not $datacenterList.ContainsKey($possibleParent.datacenter.id)) {
	  $datacenterList.Add($possibleParent.datacenter.id, $possibleParent.datacenter)
        }
	if (0) {
          Write-Host "$($possibleParent.name): " -NoNewLine
          if ($possibleParent.incompatibleReasons.inUseByDesktop) { Write-Host "inUseByDesktop, " -NoNewLine }
          if ($possibleParent.incompatibleReasons.viewComposerReplica) { Write-Host "viewComposerReplica, " -NoNewLine }
          if ($possibleParent.incompatibleReasons.inUseByLinkedCloneDesktop) { Write-Host "inUseByLinkedCloneDesktop, " -NoNewLine }
          if ($possibleParent.incompatibleReasons.unsupportedOSForLinkedCloneFarm) { Write-Host "unsupportedOSForLinkedCloneFarm, " -NoNewLine }
          if ($possibleParent.incompatibleReasons.unsupportedOS) { Write-Host "unsupportedOS, " -NoNewLine }
          if ($possibleParent.incompatibleReasons.noSnapshots) { Write-Host "noSnapshots, " -NoNewLine }
          Write-Host
        }
      }
      $hcNodes = @()
      $index = 0
      foreach ($datacenter in $datacenterList.keys) {
        $HostOrCluster_service_helper = New-Object VMware.Hv.HostOrClusterService
	$hcNodes += $HostOrCluster_service_helper.HostOrCluster_GetHostOrClusterTree($services, $datacenterList.$datacenter)
        while ($index -lt $hcNodes.length) {
	  if ($hcNodes[$index].container) {
	    Write-Host "Container" $hcNodes[$index].treecontainer.name "path" $hcNodes[$index].treecontainer.path
	    if ($hcNodes[$index].treecontainer.children.Length) { $hcNodes += $hcNodes[$index].treecontainer.children }
	  } else {
	    Write-Host "HostOrCluster" $hcNodes[$index].info.name "path" $hcNodes[$index].info.path
          }
	  $index++
	}
      }
      $rpNodes = @()
      $index = 0
      foreach ($hostOrCluster in $hcNodes) {
	if (-not $hostOrCluster.container) {
          $ResourcePool_service_helper = New-Object VMware.Hv.ResourcePoolService
          $rpNodes += $ResourcePool_service_helper.ResourcePool_GetResourcePoolTree($services, $hostOrCluster.info.id)
          while ($index -lt $rpNodes.length) {
	    Write-Host "ResourcePool" $rpNodes[$index].resourcePoolData.name "path" $rpNodes[$index].resourcePoolData.path
	    if ($rpNodes[$index].children.Length) { $rpNodes += $rpNodes[$index].children }
	    $index++
	  }
	}
      }
    }
  }
  end {
    [System.gc]::collect()
  }
}

function Get-HVPoolProvisioningData {
  param(
    [Parameter(Mandatory = $false)]
    [VMware.Hv.DesktopVirtualCenterProvisioningData]$VmObject,

    [Parameter(Mandatory = $true)]
    [VMware.Hv.VirtualCenterId]$VcID
  )
  if (!$vmObject) { $vmObject = $desktopSpecObj.AutomatedDesktopSpec.VirtualCenterProvisioningSettings.VirtualCenterProvisioningData }
  if ($template) {
    $vm_template_helper = New-Object VMware.Hv.VmTemplateService
    $templateList = $vm_template_helper.VmTemplate_List($services,$vcID)
    $templateVM = $templateList | Where-Object { $_.name -eq $template }
    if ($null -eq $templateVM) {
      throw "No template VM found with Name: [$template]"
    }
    $vmObject.Template = $templateVM.id
    $dataCenterID = $templateVM.datacenter
    if ($dataCenter -and $dataCenterID) {
        $VmTemplateInfo = $vm_template_helper.VmTemplate_ListByDatacenter($services,$dataCenterID)
        if (! ($VmTemplateInfo.Path -like "/$dataCenter/*")) {
            throw "$template not exists in datacenter: [$dataCenter]"
        }
    }
    $vmObject.datacenter = $dataCenterID
  }
  if ($parentVM) {
    $parentList = Get-HVBaseImageVmList -vcID $vcID
    $parentVmObj = $parentList | Where-Object { $_.name -eq $parentVM }
    if ($null -eq $parentVMObj) {
      throw "No parent VM found with Name: [$parentVM]"
    }
    $vmObject.ParentVm = $parentVmObj.id
    $dataCenterID = $parentVmObj.datacenter
    $vmObject.datacenter = $dataCenterID
  }
  if ($snapshotVM) {
    $baseImageSnapshot_helper = New-Object VMware.Hv.BaseImageSnapshotService
    $snapshotList = $baseImageSnapshot_helper.BaseImageSnapshot_List($services,$parentVmObj.id)
    $snapshotVmObj = $snapshotList | Where-Object { $_.name -eq $snapshotVM }
    if ($null -eq $snapshotVmObj) {
      throw "No snapshot found with Name: [$snapshotVM]"
    }
    $vmObject.Snapshot = $snapshotVmObj.id
  }
  if ($vmFolder) {
    $vmFolder_helper = New-Object VMware.Hv.VmFolderService
    $folders = $vmFolder_helper.VmFolder_GetVmFolderTree($services,$vmObject.datacenter)
    $folderList = @()
    $folderList += $folders
    while ($folderList.Length -gt 0) {
      $item = $folderList[0]
      if ($item -and !$_.folderdata.incompatiblereasons.inuse -and `
		!$_.folderdata.incompatiblereasons.viewcomposerreplicafolder -and `
		(($item.folderdata.path -eq $vmFolder) -or ($item.folderdata.name -eq $vmFolder))) {
        $vmObject.VmFolder = $item.id
        break
      }
      foreach ($folderItem in $item.children) {
        $folderList += $folderItem
      }
      $folderList = $folderList[1..$folderList.Length]
    }
    if ($null -eq $vmObject.VmFolder) {
      throw "No vmfolder found with Name: [$vmFolder]"
    }
  }
  if ($hostOrCluster) {
    $vmFolder_helper = New-Object VMware.Hv.HostOrClusterService
    $vmObject.HostOrCluster = Get-HVHostOrClusterID $vmFolder_helper.HostOrCluster_GetHostOrClusterTree($services,$vmobject.datacenter)
    if ($null -eq $vmObject.HostOrCluster) {
      throw "No hostOrCluster found with Name: [$hostOrCluster]"
    }
  }
  if ($resourcePool) {
    $resourcePool_helper = New-Object VMware.Hv.ResourcePoolService
    $vmObject.ResourcePool = Get-HVResourcePoolID $resourcePool_helper.ResourcePool_GetResourcePoolTree($services,$vmobject.HostOrCluster)
    if ($null -eq $vmObject.ResourcePool) {
      throw "No Resource Pool found with Name: [$resourcePool]"
    }
  }
  return $vmObject
}

function Get-HVHostOrClusterID {
<#
.Synopsis
    Recursive search for a Host or Cluster name within the results tree from HostOrCluster_GetHostOrClusterTree() and returns the ID

.NOTES
    HostOrCluster_GetHostOrClusterTree() returns a HostOrClusterTreeNode as below

    HostOrClusterTreeNode.container                  $true if this is a container
    HostOrClusterTreeNode.treecontainer              HostOrClusterTreeContainer
    HostOrClusterTreeNode.treecontainer.name         Container name
    HostOrClusterTreeNode.treecontainer.path         Path to this container
    HostOrClusterTreeNode.treecontainer.type         DATACENTER, FOLDER or OTHER
    HostOrClusterTreeNode.treecontainer.children     HostOrClusterTreeNode[] list of child nodes with potentially more child nodes
    HostOrClusterTreeNode.info                       HostOrClusterInfo
    HostOrClusterTreeNode.info.id                    Host or cluster ID
    HostOrClusterTreeNode.info.cluster               Is this a cluster
    HostOrClusterTreeNode.info.name                  Host or cluster name
    HostOrClusterTreeNode.info.path                  Path to host or cluster name
    HostOrClusterTreeNode.info.virtualCenter
    HostOrClusterTreeNode.info.datacenter
    HostOrClusterTreeNode.info.vGPUTypes
    HostOrClusterTreeNode.info.incompatibileReasons

    Author : Mark Elvers <mark.elvers@tunbury.org>
#>
  param(
    [Parameter(Mandatory = $true)]
    [VMware.Hv.HostOrClusterTreeNode]$hoctn
  )
  if ($hoctn.container) {
    foreach ($node in $hoctn.treeContainer.children) {
      $id = Get-HVHostOrClusterID $node
      if ($null -ne $id) {
        return $id
      }
    }
  } else {
    if ($hoctn.info.path -eq $hostOrCluster -or $hoctn.info.name -eq $hostOrCluster) {
      return $hoctn.info.id
    }
  }
  return $null
}

function Get-HVResourcePoolID {
<#
.Synopsis
    Recursive search for a Resource Pool within the results tree from ResourcePool_GetResourcePoolTree() and returns the ID

.NOTES
    ResourcePool_GetResourcePoolTree() returns ResourcePoolInfo as below

    ResourcePoolInfo.id                              Resource pool ID
    ResourcePoolInfo.resourcePoolData
    ResourcePoolInfo.resourcePoolData.name           Resource pool name
    ResourcePoolInfo.resourcePoolData.path           Resource pool path
    ResourcePoolInfo.resourcePoolData.type           HOST_OR_CLUSTER, RESOURCE_POOL or OTHER
    ResourcePoolInfo.children                        ResourcePoolInfo[] list of child nodes with potentially further child nodes

    Author : Mark Elvers <mark.elvers@tunbury.org>
#>
   param(
    [Parameter(Mandatory = $true)]
    [VMware.Hv.ResourcePoolInfo]$rpi
  )
  if ($rpi.resourcePoolData.path -eq $resourcePool -or $rpi.resourcePoolData.name -eq $resourcePool) {
    return $rpi.id
  }
  foreach ($child in $rpi.children) {
    $id = Get-HVResourcePoolID $child
    if ($null -ne $id) {
      return $id
    }
  }
  return $null
}

function Get-HVAccessGroupID {
<#
.Synopsis
    Recursive search for an Acess Group within the results tree from AccessGroup_List() and returns the ID

.NOTES
    AccessGroup_List() returns AccessGroupInfo[] (a list of structures)

    Iterate through the list of structures
    AccessGroupInfo.id                              Access Group ID
    AccessGroupInfo.base
    AccessGroupInfo.base.name                       Access Group name
    AccessGroupInfo.base.description                Access Group description
    AccessGroupInfo.base.parent                     Access Group parent ID
    AccessGroupInfo.data
    AccessGroupInfo.data.permissions                PermissionID[]
    AccessGroupInfo.children                        AccessGroupInfo[] list of child nodes with potentially further child nodes

    I couldn't create a child node of a child node via the Horizon View Administrator GUI, but the this code allows that if it occurs
    Furthermore, unless you are using the Root access group you must iterate over the children

    Root -\
          +- Access Group 1
          +- Access Group 2
          \- Access Group 3

    Author : Mark Elvers <mark.elvers@tunbury.org>
#>
   param(
    [Parameter(Mandatory = $true)]
    [VMware.Hv.AccessGroupInfo[]]$agi
  )
  foreach ($element in $agi) {
    if ($element.base.name -eq $accessGroup) {
      return $element.id
    }
    foreach ($child in $element.children) {
      $id = Get-HVAccessGroupID $child
      if ($null -ne $id) {
        return $id
      }
    }
  }
  return $null
}

function Get-HVPoolStorageObject {
  param(
    [Parameter(Mandatory = $true)]
    [VMware.Hv.HostOrClusterId[]]$HostClusterIDs,

	[Parameter(Mandatory = $false)]
    [VMware.Hv.DesktopVirtualCenterStorageSettings]$StorageObject
  )
  $datastoreList = $null
  if (!$storageObject) {
    $datastore_helper = New-Object VMware.Hv.DatastoreService
    foreach ($hostClusterID in $hostClusterIDs){
        $datastoreList += $datastore_helper.Datastore_ListDatastoresByHostOrCluster($services,$hostClusterID)
    }
    $storageObject = New-Object VMware.Hv.DesktopVirtualCenterStorageSettings
    $storageAcceleratorList = @{
      'useViewStorageAccelerator' = $useViewStorageAccelerator
    }
    $desktopViewStorageAcceleratorSettings = New-Object VMware.Hv.DesktopViewStorageAcceleratorSettings -Property $storageAcceleratorList
    $storageObject.viewStorageAcceleratorSettings = $desktopViewStorageAcceleratorSettings
    $desktopSpaceReclamationSettings = New-Object VMware.Hv.DesktopSpaceReclamationSettings -Property @{ 'reclaimVmDiskSpace' = $reclaimVmDiskSpace; 'reclamationThresholdGB' = $reclamationThresholdGB}
    $desktopPersistentDiskSettings = New-Object VMware.Hv.DesktopPersistentDiskSettings -Property @{ 'redirectWindowsProfile' = $false }
    $desktopNonPersistentDiskSettings = New-Object VMware.Hv.DesktopNonPersistentDiskSettings -Property @{ 'redirectDisposableFiles' = $false }
    if ($LinkedClone) {
      if ($blackoutTimes) {
        $storageObject.viewStorageAcceleratorSettings.BlackoutTimes = $blackoutTimes
      }
      if ($useViewStorageAccelerator) {
        $storageObject.viewStorageAcceleratorSettings.ViewComposerDiskTypes = $viewComposerDiskTypes
        $storageObject.viewStorageAcceleratorSettings.RegenerateViewStorageAcceleratorDays = $regenerateViewStorageAcceleratorDays
      }
      $desktopPersistentDiskSettings.RedirectWindowsProfile = $redirectWindowsProfile
      if ($redirectWindowsProfile) {
        $desktopPersistentDiskSettings.UseSeparateDatastoresPersistentAndOSDisks = $useSeparateDatastoresPersistentAndOSDisks
        $desktopPersistentDiskSettings.DiskSizeMB = $diskSizeMB
        $desktopPersistentDiskSettings.DiskDriveLetter = $diskDriveLetter
      }
      if ($useSeparateDatastoresPersistentAndOSDisks) {
        if ($persistentDiskStorageOvercommit -and  ($persistentDiskDatastores.Length -ne  $persistentDiskStorageOvercommit.Length) ) {
          throw "Parameters persistentDiskDatastores length: [$persistentDiskDatastores.Length] and persistentDiskStorageOvercommit length: [$persistentDiskStorageOvercommit.Length] should be of same size"
        }
        $desktopPersistentDiskSettings.PersistentDiskDatastores = Get-HVDatastore -DatastoreInfoList $datastoreList -DatastoreNames $PersistentDiskDatastores -DsStorageOvercommit $persistentDiskStorageOvercommit
      }
      $desktopNonPersistentDiskSettings.RedirectDisposableFiles = $redirectDisposableFiles
      $desktopNonPersistentDiskSettings.DiskSizeMB = $nonPersistentDiskSizeMB
      $desktopNonPersistentDiskSettings.DiskDriveLetter = $nonPersistentDiskDriveLetter
    }

    $desktopViewComposerStorageSettingsList = @{
      'useNativeSnapshots' = $useNativeSnapshots;
      'spaceReclamationSettings' = $desktopSpaceReclamationSettings;
      'persistentDiskSettings' = $desktopPersistentDiskSettings;
      'nonPersistentDiskSettings' = $desktopNonPersistentDiskSettings
    }
    if (!$FullClone) {
      $storageObject.ViewComposerStorageSettings = New-Object VMware.Hv.DesktopViewComposerStorageSettings -Property $desktopViewComposerStorageSettingsList
    }
  }
  if ($datastores) {
    if ($StorageOvercommit -and  ($datastores.Length -ne  $StorageOvercommit.Length) ) {
      throw "Parameters datastores length: [$datastores.Length] and StorageOvercommit length: [$StorageOvercommit.Length] should be of same size"
    }
	$storageObject.Datastores = Get-HVDatastore -DatastoreInfoList $datastoreList -DatastoreNames $datastores -DsStorageOvercommit $StorageOvercommit
	if ($useSeparateDatastoresReplicaAndOSDisks) {
      $storageObject.ViewComposerStorageSettings.UseSeparateDatastoresReplicaAndOSDisks = $UseSeparateDatastoresReplicaAndOSDisks
      $storageObject.ViewComposerStorageSettings.ReplicaDiskDatastore =  ($datastoreList | Where-Object { ($_.datastoredata.name -eq $replicaDiskDatastore) -or ($_.datastoredata.path -eq $replicaDiskDatastore)}).id
    }
  }
  if ($storageObject.Datastores.Count -eq 0) {
    throw "No datastore found with Name: [$datastores]"
  }
  if ($useVSAN) { $storageObject.useVSAN = $useVSAN }
  return $storageObject
}

function Get-HVDatastore {
  param(
    [Parameter(Mandatory = $true)]
    [VMware.Hv.DatastoreInfo[]]
    $DatastoreInfoList,

    [Parameter(Mandatory = $true)]
    [string[]]
    $DatastoreNames,

    [Parameter(Mandatory = $false)]
    [string[]]
    $DsStorageOvercommit

  )
  $datastoresSelected = @()
  foreach ($ds in $datastoreNames) {
    $datastoresSelected += ($datastoreInfoList | Where-Object { ($_.DatastoreData.Path -eq $ds) -or ($_.datastoredata.name -eq $ds) }).id
  }
  $Datastores = @()
  $StorageOvercommitCnt = 0
  foreach ($ds in $datastoresSelected) {
    $myDatastores = New-Object VMware.Hv.DesktopVirtualCenterDatastoreSettings
    $myDatastores.Datastore = $ds
    if (! $DsStorageOvercommit) {
      $mydatastores.StorageOvercommit = 'UNBOUNDED'
    } else {
      $mydatastores.StorageOvercommit = $DsStorageOvercommit[$StorageOvercommitCnt]
    }
    $Datastores += $myDatastores
    $StorageOvercommitCnt++
  }
  return $Datastores
}

function Get-HVPoolNetworkSetting {
  param(
    [Parameter(Mandatory = $false)]
    [VMware.Hv.DesktopVirtualCenterNetworkingSettings]$NetworkObject
  )
  if (!$networkObject) {
    $networkObject = $desktopSpecObj.AutomatedDesktopSpec.VirtualCenterProvisioningSettings.VirtualCenterNetworkingSettings
  }
  return $networkObject
}

function Get-HVPoolCustomizationSetting {
  param(
    [Parameter(Mandatory = $false)]
    [VMware.Hv.DesktopCustomizationSettings]$CustomObject,

    [Parameter(Mandatory = $true)]
    [VMware.Hv.VirtualCenterId]$VcID
  )
  if (!$customObject) {
    # View Composer and Instant Clone Engine Active Directory container for QuickPrep and ClonePrep. This must be set for Instant Clone Engine or SVI sourced desktops.
    if ($InstantClone -or $LinkedClone) {
        $ad_domain_helper = New-Object VMware.Hv.ADDomainService
        $ADDomains = $ad_domain_helper.ADDomain_List($services)
        if ($netBiosName) {
          $adDomianId = ($ADDomains | Where-Object { $_.NetBiosName -eq $netBiosName } | Select-Object -Property id)
          if ($null -eq $adDomianId) {
            throw "No Domain found with netBiosName: [$netBiosName]"
          }
        } else {
          $adDomianId = ($ADDomains[0] | Select-Object -Property id)
          if ($null -eq $adDomianId) {
            throw "No Domain configured in view administrator UI"
          }
        }
        $ad_container_helper = New-Object VMware.Hv.AdContainerService
        $adContainerId = ($ad_container_helper.ADContainer_ListByDomain($services,$adDomianId.id) | Where-Object { $_.Rdn -eq $adContainer } | Select-Object -Property id).id
        if ($null -eq $adContainerId) {
          throw "No AdContainer found with name: [$adContainer]"
        }
        $desktopSpecObj.AutomatedDesktopSpec.CustomizationSettings.AdContainer = $adContainerId
    }
    if ($InstantClone) {
      $desktopSpecObj.AutomatedDesktopSpec.CustomizationSettings.CustomizationType = 'CLONE_PREP'
      $instantCloneEngineDomainAdministrator_helper = New-Object VMware.Hv.InstantCloneEngineDomainAdministratorService
      $insDomainAdministrators = $instantCloneEngineDomainAdministrator_helper.InstantCloneEngineDomainAdministrator_List($services)
      $strFilterSet = @()
      if (![string]::IsNullOrWhitespace($netBiosName)) {
        $strFilterSet += '$_.namesData.dnsName -match $netBiosName'
      }
      if (![string]::IsNullOrWhitespace($domainAdmin)) {
        $strFilterSet += '$_.base.userName -eq $domainAdmin'
      }
      $whereClause =  [string]::Join(' -and ', $strFilterSet)
      $scriptBlock = [Scriptblock]::Create($whereClause)
      $instantCloneEngineDomainAdministrator = $insDomainAdministrators | Where-Object $scriptBlock
      If ($null -ne $instantCloneEngineDomainAdministrator) {
        $instantCloneEngineDomainAdministrator = $instantCloneEngineDomainAdministrator[0].id
      } elseif ($null -ne $insDomainAdministrators) {
        $instantCloneEngineDomainAdministrator = $insDomainAdministrators[0].id
      }
      if ($null -eq $instantCloneEngineDomainAdministrator) {
        throw "No Instant Clone Engine Domain Administrator found with netBiosName: [$netBiosName]"
      }
      $desktopSpecObj.AutomatedDesktopSpec.CustomizationSettings.CloneprepCustomizationSettings = Get-CustomizationObject
      $desktopSpecObj.AutomatedDesktopSpec.CustomizationSettings.ReusePreExistingAccounts = $reusePreExistingAccounts
      $desktopSpecObj.AutomatedDesktopSpec.CustomizationSettings.CloneprepCustomizationSettings.InstantCloneEngineDomainAdministrator = $instantCloneEngineDomainAdministrator
      $desktopSpecObj.AutomatedDesktopSpec.CustomizationSettings.CloneprepCustomizationSettings.powerOffScriptName = $powerOffScriptName
      $desktopSpecObj.AutomatedDesktopSpec.CustomizationSettings.CloneprepCustomizationSettings.powerOffScriptParameters = $powerOffScriptParameters
      $desktopSpecObj.AutomatedDesktopSpec.CustomizationSettings.CloneprepCustomizationSettings.postSynchronizationScriptName = $postSynchronizationScriptName
      $desktopSpecObj.AutomatedDesktopSpec.CustomizationSettings.CloneprepCustomizationSettings.postSynchronizationScriptParameters = $postSynchronizationScriptParameters
    }
    else {
      if ($LinkedClone) {
        $viewComposerDomainAdministrator_helper = New-Object VMware.Hv.ViewComposerDomainAdministratorService
        $lcDomainAdministrators = $viewComposerDomainAdministrator_helper.ViewComposerDomainAdministrator_List($services,$vcID)
        $strFilterSet = @()
        if (![string]::IsNullOrWhitespace($netBiosName)) {
          $strFilterSet += '$_.base.domain -match $netBiosName'
        }
        if (![string]::IsNullOrWhitespace($domainAdmin)) {
          $strFilterSet += '$_.base.userName -ieq $domainAdmin'
        }
        $whereClause =  [string]::Join(' -and ', $strFilterSet)
        $scriptBlock = [Scriptblock]::Create($whereClause)
        $ViewComposerDomainAdministratorID = $lcDomainAdministrators | Where-Object $scriptBlock
        If ($null -ne $ViewComposerDomainAdministratorID) {
          $ViewComposerDomainAdministratorID = $ViewComposerDomainAdministratorID[0].id
        } elseif ($null -ne $lcDomainAdministrators) {
           $ViewComposerDomainAdministratorID = $lcDomainAdministrators[0].id
        }
        if ($null -eq $ViewComposerDomainAdministratorID) {
          throw "No Composer Domain Administrator found with netBiosName: [$netBiosName]"
        }
        if ($custType -eq 'SYS_PREP') {
          $desktopSpecObj.AutomatedDesktopSpec.CustomizationSettings.CustomizationType = 'SYS_PREP'
          $desktopSpecObj.AutomatedDesktopSpec.CustomizationSettings.SysprepCustomizationSettings = Get-CustomizationObject

          # Get SysPrep CustomizationSpec ID
          $customization_spec_helper = New-Object VMware.Hv.CustomizationSpecService
          $sysPrepIds = $customization_spec_helper.CustomizationSpec_List($services,$vcID) | Where-Object { $_.customizationSpecData.name -eq $sysPrepName } | Select-Object -Property id
          if ($sysPrepIds.Count -eq 0) {
            throw "No Sysprep Customization Spec found with Name: [$sysPrepName]"
          }
          $desktopSpecObj.AutomatedDesktopSpec.CustomizationSettings.SysprepCustomizationSettings.CustomizationSpec = $sysPrepIds[0].id
          $desktopSpecObj.AutomatedDesktopSpec.CustomizationSettings.ReusePreExistingAccounts = $reusePreExistingAccounts
        } elseIf ($custType -eq 'QUICK_PREP') {
          $desktopSpecObj.AutomatedDesktopSpec.CustomizationSettings.CustomizationType = 'QUICK_PREP'
          $desktopSpecObj.AutomatedDesktopSpec.CustomizationSettings.QuickprepCustomizationSettings = Get-CustomizationObject
          $desktopSpecObj.AutomatedDesktopSpec.CustomizationSettings.QuickprepCustomizationSettings.powerOffScriptName = $powerOffScriptName
          $desktopSpecObj.AutomatedDesktopSpec.CustomizationSettings.QuickprepCustomizationSettings.powerOffScriptParameters = $powerOffScriptParameters
          $desktopSpecObj.AutomatedDesktopSpec.CustomizationSettings.QuickprepCustomizationSettings.postSynchronizationScriptName = $postSynchronizationScriptName
          $desktopSpecObj.AutomatedDesktopSpec.CustomizationSettings.QuickprepCustomizationSettings.postSynchronizationScriptParameters = $postSynchronizationScriptParameters
        } else {
          throw "The customization type: [$custType] is not supported for LinkedClone Pool"
        }
        $desktopSpecObj.AutomatedDesktopSpec.CustomizationSettings.DomainAdministrator = $ViewComposerDomainAdministratorID
        $desktopSpecObj.AutomatedDesktopSpec.CustomizationSettings.ReusePreExistingAccounts = $reusePreExistingAccounts
      } elseIf ($FullClone) {
        $desktopSpecObj.AutomatedDesktopSpec.CustomizationSettings.ReusePreExistingAccounts = $reusePreExistingAccounts
        if ($custType -eq 'SYS_PREP') {
          $desktopSpecObj.AutomatedDesktopSpec.CustomizationSettings.CustomizationType = 'SYS_PREP'
          $desktopSpecObj.AutomatedDesktopSpec.CustomizationSettings.SysprepCustomizationSettings = Get-CustomizationObject
          # Get SysPrep CustomizationSpec ID
          $customization_spec_helper = New-Object VMware.Hv.CustomizationSpecService
          $sysPrepIds = $customization_spec_helper.CustomizationSpec_List($services,$vcID) | Where-Object { $_.customizationSpecData.name -eq $sysPrepName } | Select-Object -Property id
          if ($sysPrepIds.Count -eq 0) {
            throw "No Sysprep Customization Spec found with Name: [$sysPrepName]"
          }
          $desktopSpecObj.AutomatedDesktopSpec.CustomizationSettings.SysprepCustomizationSettings.CustomizationSpec = $sysPrepIds[0].id
        } elseIf ($custType -eq 'NONE') {
          $desktopSpecObj.AutomatedDesktopSpec.CustomizationSettings.NoCustomizationSettings = Get-CustomizationObject
          $desktopSpecObj.AutomatedDesktopSpec.CustomizationSettings.NoCustomizationSettings.DoNotPowerOnVMsAfterCreation = $false
          $desktopSpecObj.AutomatedDesktopSpec.CustomizationSettings.CustomizationType = "NONE"
        } else {
          throw "The customization type: [$custType] is not supported for FullClone Pool."
        }
      }
    }
    $customObject = $desktopSpecObj.AutomatedDesktopSpec.CustomizationSettings
  }
  return $customObject
}

function Get-CustomizationObject {
  if ($InstantClone) {
    return New-Object VMware.Hv.DesktopCloneprepCustomizationSettings
  } elseIf ($LinkedClone) {
    if ($custType -eq 'QUICK_PREP') {
      return New-Object VMware.Hv.DesktopQuickPrepCustomizationSettings
    } else {
      return New-Object VMware.Hv.DesktopSysPrepCustomizationSettings
    }
  } else {
    if ($custType -eq 'SYS_PREP') {
      return New-Object VMware.Hv.DesktopSysPrepCustomizationSettings
    } else {
      return New-Object VMware.Hv.DesktopNoCustomizationSettings
    }
  }
}

function Get-DesktopSpec {

  param(
    [Parameter(Mandatory = $true)]
    [string]$PoolType,

    [Parameter(Mandatory = $false)]
    [string]$ProvisioningType,

    [Parameter(Mandatory = $false)]
    [string]$NamingMethod
  )
  $desktop_helper = New-Object VMware.Hv.DesktopService
  $desktop_spec_helper = $desktop_helper.getDesktopSpecHelper()
  $desktop_spec_helper.setType($poolType)
  if ($poolType -eq $desktop_spec_helper.TYPE_AUTOMATED) {
    if ($namingMethod -eq 'PATTERN') {
      $desktop_spec_helper.getDataObject().AutomatedDesktopSpec.VmNamingSpec.patternNamingSettings = $desktop_helper.getDesktopPatternNamingSettingsHelper().getDataObject()
    } else {
      $desktop_spec_helper.getDataObject().AutomatedDesktopSpec.VmNamingSpec.SpecificNamingSpec = $desktop_helper.getDesktopSpecificNamingSpecHelper().getDataObject()
    }
    if ($provisioningType -ne 'VIRTUAL_CENTER') {
      $desktop_spec_helper.getDataObject().AutomatedDesktopSpec.VirtualCenterProvisioningSettings.VirtualCenterStorageSettings.ViewComposerStorageSettings = $desktop_helper.getDesktopViewComposerStorageSettingsHelper().getDataObject()
    }
  } elseIf ($poolType -eq 'MANUAL') {
    $desktop_spec_helper.getDataObject().ManualDesktopSpec.userAssignment = $desktop_helper.getDesktopUserAssignmentHelper().getDataObject()
    $desktop_spec_helper.getDataObject().ManualDesktopSpec.viewStorageAcceleratorSettings = $desktop_helper.getDesktopViewStorageAcceleratorSettingsHelper().getDataObject()
    $desktop_spec_helper.getDataObject().ManualDesktopSpec.virtualCenterManagedCommonSettings = $desktop_helper.getDesktopVirtualCenterManagedCommonSettingsHelper().getDataObject()
  } else {
    $desktop_spec_helper.getDataObject().RdsDesktopSpec = $desktop_helper.getDesktopRDSDesktopSpecHelper().getDataObject()
  }
  return $desktop_spec_helper.getDataObject()

}

function Test-HVPoolSpec {
  param(
    [Parameter(Mandatory = $true)]
    $PoolObject
  )
  if ($null -eq $PoolObject.type) {
    Throw "Pool type is empty, need to be configured"
  }
  if ($null -eq $PoolObject.Base.Name) {
    Throw "Pool name is empty, need to be configured"
  }
  if ($null -eq $PoolObject.Base.AccessGroup) {
    Throw "AccessGroup of pool is empty, need to be configured"
  }
  if ($PoolObject.type -eq "AUTOMATED") {
     if (! (($PoolObject.AutomatedDesktopSpec.UserAssignment.UserAssignment -eq "FLOATING") -or ($PoolObject.AutomatedDesktopSpec.UserAssignment.UserAssignment -eq "DEDICATED")) ) {
        Throw "UserAssignment must be FLOATING or DEDICATED"
     }
     if ($null -eq $PoolObject.AutomatedDesktopSpec.ProvisioningType) {
        Throw "Pool Provisioning type is empty, need to be configured"
     }
     $provisionTypeArray = @('VIRTUAL_CENTER', 'VIEW_COMPOSER', 'INSTANT_CLONE_ENGINE')
     if (! ($provisionTypeArray  -contains $PoolObject.AutomatedDesktopSpec.provisioningType)) {
        Throw "ProvisioningType of pool is invalid"
     }
     if ($null -eq $PoolObject.AutomatedDesktopSpec.VirtualCenterProvisioningSettings.EnableProvisioning) {
        Throw "Whether to enable provisioning immediately or not, need to be configured"
     }
     if ($null -eq $PoolObject.AutomatedDesktopSpec.VirtualCenterProvisioningSettings.StopProvisioningOnError) {
        Throw "Whether to stop provisioning immediately or not on error, need to be configured"
     }
     if ($null -eq $PoolObject.AutomatedDesktopSpec.VmNamingSpec.NamingMethod) {
        Throw "Determines how the VMs in the desktop are named, need to be configured"
     }
     if ($null -ne $PoolObject.AutomatedDesktopSpec.VmNamingSpec.NamingMethod) {
        $namingMethodArray = @('PATTERN','SPECIFIED')
        if (! ($namingMethodArray -contains $PoolObject.AutomatedDesktopSpec.VmNamingSpec.NamingMethod)) {
            Throw "NamingMethod property must to be one of these SPECIFIED or PATTERN"
        }
        if (($null -eq $PoolObject.AutomatedDesktopSpec.VmNamingSpec.patternNamingSettings) -and ($null -eq $PoolObject.AutomatedDesktopSpec.VmNamingSpec.specificNamingSpec)) {
            Throw "Naming pattern (or) Specified name settings need to be configured"
        }
     }
     if ($null -eq $PoolObject.AutomatedDesktopSpec.VirtualCenterProvisioningSettings.VirtualCenterStorageSettings.UseVSan) {
        Throw "Must specify whether to use virtual SAN or not"
     }
     $jsonTemplate = $PoolObject.AutomatedDesktopSpec.VirtualCenterProvisioningSettings.virtualCenterProvisioningData.Template
     $jsonParentVm = $PoolObject.AutomatedDesktopSpec.VirtualCenterProvisioningSettings.virtualCenterProvisioningData.ParentVm
     $jsonSnapshot = $PoolObject.AutomatedDesktopSpec.VirtualCenterProvisioningSettings.virtualCenterProvisioningData.Snapshot
     $jsonVmFolder = $PoolObject.AutomatedDesktopSpec.VirtualCenterProvisioningSettings.virtualCenterProvisioningData.VmFolder
     $jsonHostOrCluster = $PoolObject.AutomatedDesktopSpec.VirtualCenterProvisioningSettings.virtualCenterProvisioningData.HostOrCluster
     $ResourcePool = $PoolObject.AutomatedDesktopSpec.VirtualCenterProvisioningSettings.virtualCenterProvisioningData.ResourcePool
     if (! (($null -ne $jsonTemplate) -or (($null -ne $jsonParentVm) -and ($null -ne $jsonSnapshot) ))) {
        Throw "Must specify Template or (ParentVm and Snapshot) names"
     }
     if ($null -eq $jsonVmFolder) {
        Throw "Must specify VM folder to deploy the VMs"
     }
     if ($null -eq $jsonHostOrCluster) {
        Throw "Must specify HostOrCluster to deploy the VMs"
     }
     if ($null -eq $resourcePool) {
        Throw "Must specify Resource pool to deploy the VMs"
     }
     if ($null -eq $PoolObject.AutomatedDesktopSpec.VirtualCenterProvisioningSettings.VirtualCenterStorageSettings.Datastores) {
        Throw "Must specify datastores names"
     }
     if ($null -eq $PoolObject.AutomatedDesktopSpec.VirtualCenterManagedCommonSettings.transparentPageSharingScope) {
        Throw "Must specify transparent page sharing scope"
     }
     $jsonCustomizationType = $PoolObject.AutomatedDesktopSpec.CustomizationSettings.CustomizationType
     switch ($jsonCustomizationType) {
        "NONE" {
            if ($null -eq $PoolObject.AutomatedDesktopSpec.CustomizationSettings.noCustomizationSettings) {
                Throw "Specify noCustomization Settings"
            }
        }
        "QUICK_PREP" {
            if ($null -eq $PoolObject.AutomatedDesktopSpec.CustomizationSettings.quickprepCustomizationSettings) {
                Throw "Specify quickPrep customizationSettings"
            }
        }
        "SYS_PREP" {
            if ($null -eq $PoolObject.AutomatedDesktopSpec.CustomizationSettings.sysprepCustomizationSettings) {
                Throw "Specify sysPrep customizationSettings"
            }
        }
        "CLONE_PREP" {
            if ($null -eq $PoolObject.AutomatedDesktopSpec.CustomizationSettings.cloneprepCustomizationSettings) {
                Throw "Specify clonePrep customizationSettings"
            }
        }
     }
  } elseIf ($PoolObject.Type -eq "MANUAL") {
    $jsonUserAssignment = $PoolObject.ManualDesktopSpec.UserAssignment.UserAssignment
    if (! (($jsonUserAssignment -eq "FLOATING") -or ($jsonUserAssignment -eq "DEDICATED")) ) {
        Throw "UserAssignment must be FLOATING or DEDICATED"
    }
    $jsonSource = @('VIRTUAL_CENTER','UNMANAGED')
    if (! ($jsonSource -contains $PoolObject.ManualDesktopSpec.Source)) {
        Throw "The Source of machines must be VIRTUAL_CENTER or UNMANAGED"
    }
    if ($null -eq $PoolObject.ManualDesktopSpec.Machines) {
        Throw "Specify list of virtual machines to be added to this pool"
    }
  }
  elseIf ($PoolObject.type -eq "RDS") {
    if ($null -eq $PoolObject.RdsDesktopSpec.Farm) {
        Throw "Specify farm needed to create RDS desktop"
    }
  }
}

function Remove-HVFarm {
<#
.SYNOPSIS
    Deletes specified farm(s).

.DESCRIPTION
    This function deletes the farm(s) with the specified name/object(s) from the Connection Server. Optionally, user can pipe the farm object(s) as input to this function.

.PARAMETER FarmName
    Name of the farm to be deleted.

.PARAMETER Farm
    Object(s) of the farm to be deleted. Object(s) should be of type FarmSummaryView/FarmInfo.

.PARAMETER HvServer
    Reference to Horizon View Server to query the data from. If the value is not passed or null then first element from global:DefaultHVServers would be considered in-place of hvServer.

.EXAMPLE
   Remove-HVFarm -FarmName 'Farm-01' -HvServer $hvServer -Confirm:$false
   Delete a given farm. For an automated farm, all the RDS Server VMs are deleted from disk whereas for a manual farm only the RDS Server associations are removed.

.EXAMPLE
   $farm_array | Remove-HVFarm -HvServer $hvServer
   Deletes a given Farm object(s). For an automated farm, all the RDS Server VMs are deleted from disk whereas for a manual farm only the RDS Server associations are removed.

.EXAMPLE
   $farm1 = Get-HVFarm -FarmName 'Farm-01'
   Remove-HVFarm -Farm $farm1
   Deletes a given Farm object. For an automated farm, all the RDS Server VMs are deleted from disk whereas for a manual farm only the RDS Server associations are removed.

.OUTPUTS
   None

.NOTES
    Author                      : praveen mathamsetty.
    Author email                : pmathamsetty@vmware.com
    Version                     : 1.1

    ===Tested Against Environment====
    Horizon View Server Version : 7.0.2, 7.1.0
    PowerCLI Version            : PowerCLI 6.5, PowerCLI 6.5.1
    PowerShell Version          : 5.0
#>

  [CmdletBinding(
    SupportsShouldProcess = $true,
    ConfirmImpact = 'High'
  )]
  param(
    [Parameter(Mandatory = $true,ParameterSetName = 'option')]
    [string]
    [ValidateNotNullOrEmpty()] $FarmName,

    # Farmobject
    [Parameter(ValueFromPipeline = $true,Mandatory = $true,ParameterSetName = 'pipeline')]
    [ValidateNotNullOrEmpty()] $Farm,

    [Parameter(Mandatory = $false)]
    $HvServer = $null
  )

  begin {
    $services = Get-ViewAPIService -hvServer $hvServer
    if ($null -eq $services) {
      Write-Error "Could not retrieve ViewApi services from connection object"
      break
    }
  }
  process {
    $confirmFlag = Get-HVConfirmFlag -keys $PsBoundParameters.Keys
    $farmList = @()
    if ($farmName) {
      try {
        $farmSpecObj = Get-HVFarm -farmName $farmName -hvServer $hvServer -SuppressInfo $true
      } catch {
        Write-Error "Make sure Get-HVFarm advanced function is loaded, $_"
        break
      }
      if ($farmSpecObj) {
        foreach ($farmObj in $farmSpecObj) {
          $farmList += @{"id" = $farmObj.id; "Name" =  $farmObj.data.name}
        }
      } else {
        Write-Error "Unable to retrieve FarmSummaryView with given farmName [$farmName]"
        break
      }
    } elseif ($PSCmdlet.MyInvocation.ExpectingInput -or $Farm) {
      foreach ($item in $farm) {
        if (($item.GetType().name -eq 'FarmInfo') -or ($item.GetType().name -eq 'FarmSummaryView')) {
          $farmList += @{"id" = $item.id; "Name" =  $item.data.name}
        }
        else {
          Write-Error "In pipeline did not get object of expected type FarmSummaryView/FarmInfo"
          [System.gc]::collect()
          return
        }
      }
    }
    $farm_service_helper = New-Object VMware.Hv.FarmService
    foreach ($item in $farmList) {
      if (!$confirmFlag -OR  $pscmdlet.ShouldProcess($item.Name)) {
        $farm_service_helper.Farm_Delete($services, $item.id)
      }
      Write-Host "Farm Deleted: " $item.Name
    }
  }
  end {
    [System.gc]::collect()
  }
}

function Remove-HVPool {
<#
.SYNOPSIS
    Deletes specified pool(s).

.DESCRIPTION
    This function deletes the pool(s) with the specified name/object(s) from Connection Server. This can be used for deleting any pool irrespective of its type.
    Optionally, user can pipe the pool object(s) as input to this function.

.PARAMETER PoolName
    Name of the pool to be deleted.

.PARAMETER Pool
    Object(s) of the pool to be deleted.

.PARAMETER DeleteFromDisk
    Switch parameter to delete the virtual machine(s) from the disk.

.PARAMETER HvServer
    View API service object of Connect-HVServer cmdlet.

.PARAMETER TerminateSession
    Logs off a session forcibly to virtual machine(s). This operation will also log off a locked session.

.EXAMPLE
   Remove-HVPool -HvServer $hvServer -PoolName 'FullClone' -DeleteFromDisk -Confirm:$false
   Deletes pool from disk with given parameters PoolName etc.

.EXAMPLE
   $pool_array | Remove-HVPool -HvServer $hvServer  -DeleteFromDisk
   Deletes specified pool from disk

.EXAMPLE
   Remove-HVPool -Pool $pool1
   Deletes specified pool and VM(s) associations are removed from view Manager

.OUTPUTS
   None

.NOTES
    Author                      : Praveen Mathamsetty.
    Author email                : pmathamsetty@vmware.com
    Version                     : 1.1

    ===Tested Against Environment====
    Horizon View Server Version : 7.0.2, 7.1.0
    PowerCLI Version            : PowerCLI 6.5, PowerCLI 6.5.1
    PowerShell Version          : 5.0
#>

  [CmdletBinding(
    SupportsShouldProcess = $true,
    ConfirmImpact = 'High'
  )]
  param(
    [Parameter(Mandatory = $true,ParameterSetName = 'option')]
    [string] $poolName,

    # PoolObject
    [Parameter(ValueFromPipeline = $true,ParameterSetName = 'pipeline')]
    $Pool,

    [Parameter(Mandatory = $false)]
    [switch] $TerminateSession = $false,

    [Parameter(Mandatory = $false)]
    [switch] $DeleteFromDisk,

    [Parameter(Mandatory = $false)]
    $HvServer = $null
  )

  begin {
    $services = Get-ViewAPIService -hvServer $hvServer
    if ($null -eq $services) {
      Write-Error "Could not retrieve ViewApi services from connection object"
      break
    }
  }

  process {
    $confirmFlag = Get-HVConfirmFlag -keys $PsBoundParameters.Keys
    $poolList = @()
    if ($poolName) {
      try {
        $myPools = Get-HVPoolSummary -poolName $poolName -suppressInfo $true -hvServer $hvServer
      } catch {
        Write-Error "Make sure Get-HVPoolSummary advanced function is loaded, $_"
        break
      }
      if ($myPools) {
        foreach ($poolObj in $myPools) {
          $poolList += @{id = $poolObj.id; name = $poolObj.desktopSummaryData.name}
        }
      } else {
        Write-Error "No desktopsummarydata found with pool name: [$pool]"
        break
      }
    } elseif ($PSCmdlet.MyInvocation.ExpectingInput -or $Pool) {
      foreach ($item in $pool) {
        if ($item.GetType().name -eq 'DesktopSummaryView') {
          $poolList += @{id = $item.id; name = $item.desktopSummaryData.name}
        }
        elseif ($item.GetType().name -eq 'DesktopInfo') {
          $poolList += @{id = $item.id; name = $item.base.name}
        }
        else {
          Write-Error "In pipeline did not get object of expected type DesktopSummaryView/DesktopInfo"
          [System.gc]::collect()
          return
        }
      }
    }
    $desktop_service_helper = New-Object VMware.Hv.DesktopService
    $deleteSpec = New-Object VMware.Hv.DesktopDeleteSpec
    $deleteSpec.DeleteFromDisk = $deleteFromDisk
    foreach ($item in $poolList) {
      if ($terminateSession) {
        #Terminate session
        $queryResults = Get-HVQueryResult MachineSummaryView (Get-HVQueryFilter base.desktop -eq $item.id)
        $sessions += $queryResults.base.session
        if ($null -ne $sessions) {
          $session_service_helper = New-Object VMware.Hv.SessionService
          try {
            Write-Host "Terminating Sessions, it may take few seconds..."
            $session_service_helper.Session_LogoffSessionsForced($services,$sessions)
          } catch {
            Write-Host "Warning: Terminate Session failed."
          }
        } else {
          Write-Host "No session found."
        }
      }
      Write-Host "Deleting Pool: " $item.Name
      if (!$confirmFlag -OR  $pscmdlet.ShouldProcess($item.Name)) {
        $desktop_service_helper.Desktop_Delete($services,$item.id,$deleteSpec)
      }
    }
  }

  end {
    [System.gc]::collect()
  }
}

function Set-HVFarm {
<#
.SYNOPSIS
    Edit farm configuration by passing key/values as parameters/json.

.DESCRIPTION
    This function allows user to edit farm configuration by passing key/value pairs. Optionally, user can pass a JSON spec file. User can also pipe the farm object(s) as input to this function.

.PARAMETER FarmName
    Name of the farm to edit.

.PARAMETER Farm
    Object(s) of the farm to edit. Object(s) should be of type FarmSummaryView/FarmInfo.

.PARAMETER Enable
    Switch to enable the farm(s).

.PARAMETER Disable
    Switch to disable the farm(s).

.PARAMETER Start
    Switch to enable provisioning immediately for the farm(s). It's applicable only for 'AUTOMATED' farm type.

.PARAMETER Stop
    Switch to disable provisioning immediately for the farm(s). It's applicable only for 'AUTOMATED' farm type.

.PARAMETER Key
    Property names path separated by . (dot) from the root of desktop spec.

.PARAMETER Value
    Property value corresponds to above key name.

.PARAMETER Spec
    Path of the JSON specification file containing key/value pair.

.PARAMETER HvServer
    Reference to Horizon View Server to query the data from. If the value is not passed or null then first element from global:DefaultHVServers would be considered in-place of hvServer.

.EXAMPLE
    Set-HVFarm -FarmName 'Farm-01' -Spec 'C:\Edit-HVFarm\ManualEditFarm.json' -Confirm:$false
    Updates farm configuration by using json file

.EXAMPLE
    Set-HVFarm -FarmName 'Farm-01' -Key 'base.description' -Value 'updated description'
    Updates farm configuration with given parameters key and value

.EXAMPLE
    $farm_array | Set-HVFarm -Key 'base.description' -Value 'updated description'
    Updates farm(s) configuration with given parameters key and value

.EXAMPLE
    Set-HVFarm -farm 'Farm2' -Start
    Enables provisioning to specified farm

.EXAMPLE
    Set-HVFarm -farm 'Farm2' -Enable
    Enables specified farm

.OUTPUTS
    None

.NOTES
    Author                      : praveen mathamsetty.
    Author email                : pmathamsetty@vmware.com
    Version                     : 1.1

    ===Tested Against Environment====
    Horizon View Server Version : 7.0.2, 7.1.0
    PowerCLI Version            : PowerCLI 6.5, PowerCLI 6.5.1
    PowerShell Version          : 5.0
#>

  [CmdletBinding(
    SupportsShouldProcess = $true,
    ConfirmImpact = 'High'
  )]
  param(
    [Parameter(Mandatory = $true,ParameterSetName = 'option')]
    [string]$FarmName,

    [Parameter(ValueFromPipeline = $true,ParameterSetName = 'pipeline')]
    $Farm,

    [Parameter(Mandatory = $false)]
    [switch]$Enable,

    [Parameter(Mandatory = $false)]
    [switch]$Disable,

    [Parameter(Mandatory = $false)]
    [switch]$Start,

    [Parameter(Mandatory = $false)]
    [switch]$Stop,

    [Parameter(Mandatory = $false)]
    [string]$Key,

    [Parameter(Mandatory = $false)]
    $Value,

    [Parameter(Mandatory = $false)]
    [string]$Spec,

    [Parameter(Mandatory = $false)]
    $HvServer = $null
  )

  begin {
    $services = Get-ViewAPIService -hvServer $hvServer
    if ($null -eq $services) {
      Write-Error "Could not retrieve ViewApi services from connection object"
      break
    }
  }

  process {
    $confirmFlag = Get-HVConfirmFlag -keys $PsBoundParameters.Keys
    $farmList = @{}
    if ($farmName) {
      try {
        $farmSpecObj = Get-HVFarmSummary -farmName $farmName -hvServer $hvServer -suppressInfo $true
      } catch {
        Write-Error "Make sure Get-HVFarmSummary advanced function is loaded, $_"
        break
      }
      if ($farmSpecObj) {
        foreach ($farmObj in $farmSpecObj) {
          if (($Start -or $Stop) -and ("AUTOMATED" -ne $farmObj.Data.Type)) {
            Write-Error "Start/Stop operation is not supported for farm with name : [$farmObj.Data.Name]"
            return
          }
          $farmList.add($farmObj.id, $farmObj.data.name)
        }
      } else {
        Write-Error "Unable to retrieve FarmSummaryView with given farmName [$farmName]"
        break
      }
    } elseif ($PSCmdlet.MyInvocation.ExpectingInput) {
      foreach ($item in $farm) {
        if ($item.GetType().name -eq 'FarmSummaryView') {
          if (($Start -or $Stop) -and ("AUTOMATED" -ne $item.Data.Type)) {
            Write-Error "Start/Stop operation is not supported for farm with name : [$item.Data.Name]"
            return
          }
          $farmList.add($item.id, $item.data.name)
        }
        elseif ($item.GetType().name -eq 'FarmInfo') {
          if (($Start -or $Stop) -and ("AUTOMATED" -ne $item.Type)) {
            Write-Error "Start/Stop operation is not supported for farm with name : [$item.Data.Name]"
            return
          }
          $farmList.add($item.id, $item.data.name)
        }
        else {
          Write-Error "In pipeline did not get object of expected type FarmSummaryView/FarmInfo"
          [System.gc]::collect()
          return
        }
      }
    }

    $updates = @()
    if ($PSBoundParameters.ContainsKey("key") -and $PSBoundParameters.ContainsKey("value")) {
      $updates += Get-MapEntry -key $key -value $value
    } elseif ($PSBoundParameters.ContainsKey("key") -or $PSBoundParameters.ContainsKey("value")) {
      Write-Error "Both key:[$key] and value:[$value] need to be specified"
    }
    if ($spec) {
      $specObject = Get-JsonObject -specFile $spec
      foreach ($member in ($specObject.PSObject.Members | Where-Object { $_.MemberType -eq 'NoteProperty' })) {
        $updates += Get-MapEntry -key $member.name -value $member.value
      }
    }
    if ($Enable) {
      $updates += Get-MapEntry -key 'data.enabled' -value $true
    }
    elseif ($Disable) {
      $updates += Get-MapEntry -key 'data.enabled' -value $false
    }
    elseif ($Start) {
      $updates += Get-MapEntry -key 'automatedFarmData.virtualCenterProvisioningSettings.enableProvisioning' `
            -value $true
    }
    elseif ($Stop) {
      $updates += Get-MapEntry -key 'automatedFarmData.virtualCenterProvisioningSettings.enableProvisioning' `
            -value $false
    }
    $farm_service_helper = New-Object VMware.Hv.FarmService
    foreach ($item in $farmList.Keys) {
      if (!$confirmFlag -OR  $pscmdlet.ShouldProcess($farmList.$item)) {
        $farm_service_helper.Farm_Update($services,$item,$updates)
      }
      Write-Host "Update successful for farm: " $farmList.$item
    }
  }

  end {
    $updates = $null
    [System.gc]::collect()
  }
}

function Set-HVPool {
<#
.SYNOPSIS
    Sets the existing pool properties.

.DESCRIPTION
    This cmdlet allows user to edit pool configuration by passing key/value pair. Optionally, user can pass a JSON spec file.

.PARAMETER PoolName
    Name of the pool to edit.

.PARAMETER Pool
    Object(s) of the pool to edit.

.PARAMETER Enable
    Switch parameter to enable the pool.

.PARAMETER Disable
    Switch parameter to disable the pool.

.PARAMETER Start
    Switch parameter to start the pool.

.PARAMETER Stop
    Switch parameter to stop the pool.

.PARAMETER Key
    Property names path separated by . (dot) from the root of desktop spec.

.PARAMETER Value
    Property value corresponds to above key name.

.PARAMETER HvServer
    View API service object of Connect-HVServer cmdlet.

.PARAMETER Spec
    Path of the JSON specification file containing key/value pair.

.EXAMPLE
    Set-HVPool -PoolName 'ManualPool' -Spec 'C:\Edit-HVPool\EditPool.json' -Confirm:$false
    Updates pool configuration by using json file

.EXAMPLE
    Set-HVPool -PoolName 'RDSPool' -Key 'base.description' -Value 'update description'
    Updates pool configuration with given parameters key and value

.Example
    Set-HVPool  -PoolName 'LnkClone' -Disable
    Disables specified pool

.Example
    Set-HVPool  -PoolName 'LnkClone' -Enable
    Enables specified pool

.Example
    Set-HVPool  -PoolName 'LnkClone' -Start
    Enables provisioning to specified pool

.Example
    Set-HVPool  -PoolName 'LnkClone' -Stop
    Disables provisioning to specified pool

.OUTPUTS
    None

.NOTES
    Author                      : Praveen Mathamsetty.
    Author email                : pmathamsetty@vmware.com
    Version                     : 1.2
    Updated                     : Mark Elvers <mark.elvers@tunbury.org>

    ===Tested Against Environment====
    Horizon View Server Version : 7.0.2, 7.1.0
    PowerCLI Version            : PowerCLI 6.5, PowerCLI 6.5.1
    PowerShell Version          : 5.0
#>

  [CmdletBinding(
    SupportsShouldProcess = $true,
    ConfirmImpact = 'High'
  )]

  param(
    [Parameter(Mandatory = $true,ParameterSetName = 'option')]
    [string]$PoolName,

    #pool object
    [Parameter(ValueFromPipeline = $true,ParameterSetName = 'pipeline')]
    $Pool,

    [Parameter(Mandatory = $false)]
    [switch]$Enable,

    [Parameter(Mandatory = $false)]
    [switch]$Disable,

    [Parameter(Mandatory = $false)]
    [switch]$Start,

    [Parameter(Mandatory = $false)]
    [switch]$Stop,

    [Parameter(Mandatory = $false)]
    [string]$Key,

    [Parameter(Mandatory = $false)]
    $Value,

    [Parameter(Mandatory = $false)]
    [string]$Spec,

    [Parameter(Mandatory = $false)]
    [string]
    $globalEntitlement,

    [Parameter(Mandatory = $false)]
    [string]
    $ResourcePool,

    [Parameter(Mandatory = $false)]
    [switch]$clearGlobalEntitlement,

    [Parameter(Mandatory = $false)]
    [boolean]$allowUsersToChooseProtocol,

    [Parameter(Mandatory = $false)]
    [boolean]$enableHTMLAccess,

    [Parameter(Mandatory = $false)]
    $HvServer = $null
  )

  begin {
    $services = Get-ViewAPIService -hvServer $hvServer
    if ($null -eq $services) {
      Write-Error "Could not retrieve ViewApi services from connection object"
      break
    }
  }

  process {
    $confirmFlag = Get-HVConfirmFlag -keys $PsBoundParameters.Keys
    $poolList = @{}
    if ($poolName) {
      try {
        $desktopPools = Get-HVPoolSummary -poolName $poolName -suppressInfo $true -hvServer $hvServer
      } catch {
        Write-Error "Make sure Get-HVPoolSummary advanced function is loaded, $_"
        break
      }
      if ($desktopPools) {
        foreach ($desktopObj in $desktopPools) {
          if (($Start -or $Stop) -and ("AUTOMATED" -ne $desktopObj.DesktopSummaryData.Type)) {
            Write-Error "Start/Stop operation is not supported for Pool with name : [$desktopObj.DesktopSummaryData.Name]"
            return
          }
          $poolList.add($desktopObj.id, $desktopObj.DesktopSummaryData.Name)
        }
      }  else {
        Write-Error "No desktopsummarydata found with pool name: [$poolName]"
        break
      }
    } elseif ($PSCmdlet.MyInvocation.ExpectingInput -or $Pool) {
      foreach ($item in $pool) {
        if ($item.GetType().name -eq 'DesktopInfo') {
          if (($Start -or $Stop) -and ("AUTOMATED" -ne $item.Type)) {
            Write-Error "Start/Stop operation is not supported for Pool with name : [$item.Base.Name]"
            return
          }
          $poolList.add($item.id, $item.Base.Name)
        }
        elseif ($item.GetType().name -eq 'DesktopSummaryView') {
          if (($Start -or $Stop) -and ("AUTOMATED" -ne $item.DesktopSummaryData.Type)) {
            Write-Error "Start/Stop operation is not supported for Poll with name : [$item.DesktopSummaryData.Name]"
            return
          }
          $poolList.add($item.id, $item.DesktopSummaryData.Name)
        }
        else {
          Write-Error "In pipeline did not get object of expected type DesktopSummaryView/DesktopInfo"
          [System.gc]::collect()
          return
        }
      }
    }
    $updates = @()
    if ($PSBoundParameters.ContainsKey("key") -and $PSBoundParameters.ContainsKey("value")) {
      $updates += Get-MapEntry -key $key -value $value
    } elseif ($PSBoundParameters.ContainsKey("key") -or $PSBoundParameters.ContainsKey("value")) {
      Write-Error "Both key:[$key] and value:[$value] needs to be specified"
    }
    if ($spec) {
      try {
        $specObject = Get-JsonObject -specFile $spec
      } catch {
        Write-Error "Json file exception, $_"
        return
      }
      foreach ($member in ($specObject.PSObject.Members | Where-Object { $_.MemberType -eq 'NoteProperty' })) {
        $updates += Get-MapEntry -key $member.name -value $member.value
      }
    }
    if ($Enable) {
      $updates += Get-MapEntry -key 'desktopSettings.enabled' -value $true
    }
    elseif ($Disable) {
      $updates += Get-MapEntry -key 'desktopSettings.enabled' -value $false
    }
    elseif ($Start) {
      $updates += Get-MapEntry -key 'automatedDesktopData.virtualCenterProvisioningSettings.enableProvisioning' `
        -value $true
    }
    elseif ($Stop) {
      $updates += Get-MapEntry -key 'automatedDesktopData.virtualCenterProvisioningSettings.enableProvisioning' `
        -value $false
    }

    if ($PSBoundParameters.ContainsKey("allowUsersToChooseProtocol")) {
    	$updates += Get-MapEntry -key 'desktopSettings.displayProtocolSettings.allowUsersToChooseProtocol' -value $allowUsersToChooseProtocol
    }

    if ($PSBoundParameters.ContainsKey("enableHTMLAccess")) {
    	$updates += Get-MapEntry -key 'desktopSettings.displayProtocolSettings.enableHTMLAccess' -value $enableHTMLAccess
    }

    if ($PSBoundParameters.ContainsKey("ResourcePool")) {
      foreach ($item in $poolList.Keys) {
          $pool = Get-HVPool -PoolName $poolList.$item
          $ResourcePool_service_helper = New-Object VMware.Hv.ResourcePoolService
          $ResourcePoolID = Get-HVResourcePoolID $ResourcePool_service_helper.ResourcePool_GetResourcePoolTree($services, $pool.AutomatedDesktopData.VirtualCenterProvisioningSettings.VirtualCenterProvisioningData.HostOrCluster)
          $updates += Get-MapEntry -key 'automatedDesktopData.virtualCenterProvisioningSettings.virtualCenterProvisioningData.resourcePool' -value $ResourcePoolID
      }
    }

    if ($clearGlobalEntitlement) {
    	$update = New-Object VMware.Hv.MapEntry
    	$update.key = 'globalEntitlementData.globalEntitlement'
    	$updates += $update
    }

    $info = $services.PodFederation.PodFederation_get()
    if ($globalEntitlement -and ("ENABLED" -eq $info.localPodStatus.status)) {
        $QueryFilterEquals = New-Object VMware.Hv.QueryFilterEquals
        $QueryFilterEquals.memberName = 'base.displayName'
        $QueryFilterEquals.value = $globalEntitlement
        $defn = New-Object VMware.Hv.QueryDefinition
        $defn.queryEntityType = 'GlobalEntitlementSummaryView'
        $defn.Filter = $QueryFilterEquals
        $query_service_helper = New-Object VMware.Hv.QueryServiceService
        try {
            $queryResults = $query_service_helper.QueryService_Query($services,$defn)
            $globalEntitlementid = $queryResults.Results.id
            if ($globalEntitlementid.length -eq 1) {
      	    	$updates += Get-MapEntry -key 'globalEntitlementData.globalEntitlement' -value $globalEntitlementid
            }
        }
        catch {
            Write-Host "GlobalEntitlement " $_
        }
    }

    $desktop_helper = New-Object VMware.Hv.DesktopService
    foreach ($item in $poolList.Keys) {
      Write-Host "Updating the Pool: " $poolList.$item
      if (!$confirmFlag -OR  $pscmdlet.ShouldProcess($poolList.$item)) {
       $desktop_helper.Desktop_Update($services,$item,$updates)
      }
    }
  }

  end {
    [System.gc]::collect()
  }
}

function Start-HVFarm {
<#
.SYNOPSIS
    Performs maintenance tasks on the farm(s).

.DESCRIPTION
    This function is used to perform maintenance tasks like enable/disable, start/stop and recompose the farm. This function is also used for scheduling maintenance operation on instant-clone farm(s).

.PARAMETER Farm
    Name/Object(s) of the farm. Object(s) should be of type FarmSummaryView/FarmInfo.

.PARAMETER Recompose
    Switch for recompose operation. Requests a recompose of RDS Servers in the specified 'AUTOMATED' farm. This marks the RDS Servers for recompose, which is performed asynchronously.

.PARAMETER ScheduleMaintenance
    Switch for ScheduleMaintenance operation. Requests for scheduling maintenance operation on RDS Servers in the specified Instant clone farm. This marks the RDS Servers for scheduled maintenance, which is performed according to the schedule.

.PARAMETER CancelMaintenance
    Switch for cancelling maintenance operation. Requests for cancelling a scheduled maintenance operation on the specified Instant clone farm. This stops further maintenance operation on the given farm.

.PARAMETER StartTime
    Specifies when to start the recompose/ScheduleMaintenance operation. If unset, the recompose operation will begin immediately.
    For IMMEDIATE maintenance if unset, maintenance will begin immediately. For RECURRING maintenance if unset, will be calculated based on recurring maintenance configuration. If in the past, maintenance will begin immediately.

.PARAMETER LogoffSetting
    Determines when to perform the operation on machines which have an active session. This property will be one of:
    "FORCE_LOGOFF" - Users will be forced to log off when the system is ready to operate on their RDS Servers. Before being forcibly logged off, users may have a grace period in which to save their work (Global Settings). This is the default value.
    "WAIT_FOR_LOGOFF" - Wait for connected users to disconnect before the task starts. The operation starts immediately on RDS Servers without active sessions.

.PARAMETER StopOnFirstError
    Indicates that the operation should stop on first error. Defaults to true.

.PARAMETER Servers
    The RDS Server(s) id to recompose. Provide a comma separated list for multiple RDSServerIds.

.PARAMETER ParentVM
    New base image VM for automated farm's RDS Servers. This must be in the same datacenter as the base image of the RDS Server.

.PARAMETER SnapshotVM
    Base image snapshot for the Automated Farm's RDS Servers.

.PARAMETER Vcenter
    Virtual Center server-address (IP or FQDN) of the given farm. This should be same as provided to the Connection Server while adding the vCenter server.

.PARAMETER MaintenanceMode
    The mode of schedule maintenance for Instant Clone Farm. This property will be one of:
    "IMMEDIATE"	- All server VMs will be refreshed once, immediately or at user scheduled time.
    "RECURRING"	- All server VMs will be periodically refreshed based on MaintenancePeriod and MaintenanceStartTime.

.PARAMETER MaintenanceStartTime
    Configured start time for the recurring maintenance. This property must be in the form hh:mm in 24 hours format.

.PARAMETER MaintenancePeriod
    This represents the frequency at which to perform recurring maintenance. This property will be one of:
    "DAILY"	- Daily recurring maintenance
    "WEEKLY" - Weekly recurring maintenance
    "MONTHLY" - Monthly recurring maintenance

.PARAMETER StartInt
    Start index for weekly or monthly maintenance. Weekly: 1-7 (Sun-Sat), Monthly: 1-31.
    This property is required if maintenancePeriod is set to "WEEKLY"or "MONTHLY".
    This property has values 1-7 for maintenancePeriod "WEEKLY".
    This property has values 1-31 for maintenancePeriod "MONTHLY".

.PARAMETER EveryInt
    How frequently to repeat maintenance, expressed as a multiple of the maintenance period. e.g. Every 2 weeks.
    This property has a default value of 1. This property has values 1-100.

.PARAMETER NumCPU
    Number of CPU of the Vm Instances

.PARAMETER Ram
    Ram of the Vm Instances
    Units in MB for Ram parameter

.PARAMETER CoresPerSocket
    CoresPerSocket of the Vm Instances

.PARAMETER HvServer
    Reference to Horizon View Server to query the data from. If the value is not passed or null then first element from global:DefaultHVServers would be considered in-place of hvServer.

.EXAMPLE
    Start-HVFarm -Recompose -Farm 'Farm-01' -LogoffSetting FORCE_LOGOFF -ParentVM 'View-Agent-Win8' -SnapshotVM 'Snap_USB' -Confirm:$false
    Requests a recompose of RDS Servers in the specified automated farm

.EXAMPLE
    $myTime = Get-Date '10/03/2016 12:30:00'
    Start-HVFarm -Farm 'Farm-01' -Recompose -LogoffSetting 'FORCE_LOGOFF' -ParentVM 'ParentVM' -SnapshotVM 'SnapshotVM' -StartTime $myTime
    Requests a recompose task for automated farm in specified time

.EXAMPLE
    Start-HVFarm -Farm 'ICFarm-01' -ScheduleMaintenance -MaintenanceMode IMMEDIATE
    Requests a ScheduleMaintenance task for instant-clone farm. Schedules an IMMEDIATE maintenance.

.EXAMPLE
    Start-HVFarm -ScheduleMaintenance -Farm 'ICFarm-01' -MaintenanceMode RECURRING -MaintenancePeriod WEEKLY -MaintenanceStartTime '11:30' -StartInt 6 -EveryInt 1 -ParentVM 'vm-rdsh-ic' -SnapshotVM 'Snap_Updated'
    Requests a ScheduleMaintenance task for instant-clone farm. Schedules a recurring weekly maintenace every Saturday night at 23:30 and updates the parentVM and snapshot.

.EXAMPLE
    Start-HVFarm -CancelMaintenance -Farm 'ICFarm-01' -MaintenanceMode RECURRING
    Requests a CancelMaintenance task for instant-clone farm. Cancels recurring maintenance.

.OUTPUTS
    None

.NOTES
    Author                      : praveen mathamsetty.
    Author email                : pmathamsetty@vmware.com
    Version                     : 1.1

    ===Tested Against Environment====
    Horizon View Server Version : 7.0.2, 7.1.0
    PowerCLI Version            : PowerCLI 6.5, PowerCLI 6.5.1
    PowerShell Version          : 5.0
#>

  [CmdletBinding(
    SupportsShouldProcess = $true,
    ConfirmImpact = 'High'
  )]
  param(
    [Parameter(Mandatory = $true,ValueFromPipeline = $true)]
    $Farm,

    [Parameter(Mandatory = $false,ParameterSetName = 'RECOMPOSE')]
    [switch]$Recompose,

    [Parameter(Mandatory = $false,ParameterSetName = 'SCHEDULEMAINTENANCE')]
    [switch]$ScheduleMaintenance,

    [Parameter(Mandatory = $false,ParameterSetName = 'CANCELMAINTENANCE')]
    [switch]$CancelMaintenance,

    [Parameter(Mandatory = $false,ParameterSetName = 'RECOMPOSE')]
    [Parameter(Mandatory = $false,ParameterSetName = 'SCHEDULEMAINTENANCE')]
    [System.DateTime]$StartTime,

    [Parameter(Mandatory = $true,ParameterSetName = 'RECOMPOSE')]
    [Parameter(Mandatory = $false,ParameterSetName = 'SCHEDULEMAINTENANCE')]
    [ValidateSet('FORCE_LOGOFF','WAIT_FOR_LOGOFF')]
    [string]$LogoffSetting = 'FORCE_LOGOFF',

    [Parameter(Mandatory = $false,ParameterSetName = 'RECOMPOSE')]
    [Parameter(Mandatory = $false,ParameterSetName = 'SCHEDULEMAINTENANCE')]
    [boolean]$StopOnFirstError = $true,

    [Parameter(Mandatory = $false,ParameterSetName = 'RECOMPOSE')]
    [string []]$Servers,

    [Parameter(Mandatory = $true,ParameterSetName = 'RECOMPOSE')]
    [Parameter(Mandatory = $false,ParameterSetName = 'SCHEDULEMAINTENANCE')]
    [string]$ParentVM,

    [Parameter(Mandatory = $true,ParameterSetName = 'RECOMPOSE')]
    [Parameter(Mandatory = $false,ParameterSetName = 'SCHEDULEMAINTENANCE')]
    [string]$SnapshotVM,

    [Parameter(Mandatory = $false,ParameterSetName = 'RECOMPOSE')]
    [Parameter(Mandatory = $false,ParameterSetName = 'SCHEDULEMAINTENANCE')]
    [string]$Vcenter,

    [Parameter(Mandatory = $true,ParameterSetName = 'SCHEDULEMAINTENANCE')]
    [Parameter(Mandatory = $true,ParameterSetName = 'CANCELMAINTENANCE')]
    [ValidateSet('IMMEDIATE','RECURRING')]
    [string]$MaintenanceMode,

    [Parameter(Mandatory = $false,ParameterSetName = 'SCHEDULEMAINTENANCE')]
    [ValidatePattern('^([0-9]|0[0-9]|1[0-9]|2[0-3]):[0-5][0-9]$')]
    [string]$MaintenanceStartTime,

    [Parameter(Mandatory = $false,ParameterSetName = 'SCHEDULEMAINTENANCE')]
    [ValidateSet('DAILY','WEEKLY','MONTHLY')]
    [string]$MaintenancePeriod,

    [Parameter(Mandatory = $false,ParameterSetName = 'SCHEDULEMAINTENANCE')]
    [ValidateRange(1, 31)]
    [int]$StartInt,

    [Parameter(Mandatory = $false,ParameterSetName = 'SCHEDULEMAINTENANCE')]
    [ValidateRange(1, 100)]
    [int]$EveryInt = 1,

    [Parameter(Mandatory = $false)]
    [ValidateRange(1,[Int]::MaxValue)]
    [int]
    $NumCPU = 4,

    [Parameter(Mandatory = $false)]
    [ValidateRange(1,[Int]::MaxValue)]
    [int]
    $Ram = 16384,

    [Parameter(Mandatory = $false)]
    [ValidateRange(1,[Int]::MaxValue)]
    [int]
    $CoresPerSocket = 1,

    [Parameter(Mandatory = $false)]
    $HvServer = $null
  )

  begin {
    $services = Get-ViewAPIService -hvServer $hvServer
    if ($null -eq $services) {
      Write-Error "Could not retrieve ViewApi services from connection object"
      break
    }
  }

  process {
    $confirmFlag = Get-HVConfirmFlag -keys $PsBoundParameters.Keys
    $farmList = @{}
    $farmType = @{}
    $farmSource = @{}
    $farm_service_helper = New-Object VMware.Hv.FarmService
    if ($farm) {
      if ($farm.GetType().name -eq 'FarmInfo') {
        $id = $farm.id
        $name = $farm.data.name
        $type = $farm.type
        $source = $farm.source
      }
      elseif ($farm.GetType().name -eq 'FarmSummaryView') {
        $id = $farm.id
        $name = $farm.data.name
        $type = $farm.data.type
        $source = $farm.data.source
      }
      elseif ($farm.GetType().name -eq 'String') {
        try {
          $farmSpecObj = Get-HVFarm -farmName $farm -hvServer $hvServer -SuppressInfo $true
        } catch {
          Write-Error "Make sure Get-HVFarm advanced function is loaded, $_"
          break
        }
        if ($farmSpecObj) {
          $id = $farmSpecObj.id
          $name = $farmSpecObj.data.name
          $type = $farmSpecObj.type
          $source = $farmSpecObj.source
        } else {
          Write-Error "Unable to retrieve FarmSummaryView with given farmName [$farm]"
          break
        }
      } else {
        Write-Error "In pipeline did not get object of expected type FarmSummaryView/FarmInfo"
        break
      }
      if (!$source) {
        $source = 'VIEW_COMPOSER'
      }
      $farmList.Add($id,$name)
      $farmType.Add($id,$type)
      $farmSource.Add($id,$source)
    }
  }


  end {
    foreach ($item in $farmList.Keys) {
      $operation = $PsCmdlet.ParameterSetName
      Write-Host "Performing $operation" on $farmList.$item
      switch ($operation) {
        'RECOMPOSE' {
          if ($farmSource.$item -ne 'VIEW_COMPOSER') {
            Write-Error "RECOMPOSE operation is not supported for farm with name [$farmList.$item]"
            break
          } else {
            $vcId = Get-VcenterID -services $services -vCenter $vCenter
            if ($null -eq $vcId) {
              break
            }
            $serverList = Get-AllRDSServersInFarm -services $services -farm $item -serverList $servers
            if ($null -eq $serverList) {
              Write-Error "No servers found for the farm [$item]"
            }
            $spec = New-Object VMware.Hv.FarmRecomposeSpec
            $spec.LogoffSetting = $logoffSetting
            $spec.StopOnFirstError = $stopOnFirstError
            $spec.RdsServers = $serverList
            try {
              $spec = Set-HVFarmSpec -vcId $vcId -spec $spec
            } catch {
              Write-Error "RECOMPOSE task failed with error: $_"
              break
            }
            if ($startTime) { $spec.startTime = $startTime }
            # Update Base Image VM and Snapshot in Farm
            $updates = @()
            $updates += Get-MapEntry -key 'automatedFarmData.virtualCenterProvisioningSettings.virtualCenterProvisioningData.parentVm' -value $spec.ParentVM
            $updates += Get-MapEntry -key 'automatedFarmData.virtualCenterProvisioningSettings.virtualCenterProvisioningData.snapshot' -value $spec.Snapshot
            if (!$confirmFlag -OR  $pscmdlet.ShouldProcess($farmList.$item)) {
              $farm_service_helper.Farm_Update($services,$item,$updates)
              $farm_service_helper.Farm_Recompose($services,$item,$spec)
            }
            Write-Host "Performed recompose task on farm: " $farmList.$item
          }
        }
        'SCHEDULEMAINTENANCE' {
          if ($farmSource.$item -ne 'INSTANT_CLONE_ENGINE') {
            Write-Error "SCHEDULEMAINTENANCE operation is not supported for farm with name [$farmList.$item]. It is only supported for instant-clone farms."
            break
          } else {
            $spec = New-Object VMware.Hv.FarmMaintenanceSpec
            $spec.MaintenanceMode = $MaintenanceMode
            if ($startTime) {
              $spec.ScheduledTime = $StartTime
            }
            $spec.LogoffSetting = $LogoffSetting
            $spec.StopOnFirstError = $StopOnFirstError
            if ($MaintenanceMode -eq "RECURRING") {
                $spec.RecurringMaintenanceSettings = New-Object VMware.Hv.FarmRecurringMaintenanceSettings
                $spec.RecurringMaintenanceSettings.MaintenancePeriod = $MaintenancePeriod
                $spec.RecurringMaintenanceSettings.EveryInt = $EveryInt
                if (!$MaintenanceStartTime) {
                    Write-Error "MaintenanceStartTime must be defined for MaintenanceMode = RECURRING."
                    break;
                } else {
                    $spec.RecurringMaintenanceSettings.StartTime = $MaintenanceStartTime
                }
                if ($MaintenancePeriod -ne 'DAILY') {
                    if (!$StartInt) {
                        Write-Error "StartInt must be defined for MaintenancePeriod WEEKLY or MONTHLY."
                        break;
                    } else {
                        $spec.RecurringMaintenanceSettings.StartInt = $StartInt
                    }
                }
            }
            #image settings are specified
            if ($ParentVM -and $SnapshotVM) {
                $spec.ImageMaintenanceSettings = New-Object VMware.Hv.FarmImageMaintenanceSettings
                $vcId = Get-VcenterID -services $services -vCenter $Vcenter
                if ($null -eq $vcId) {
                    Write-Error "VCenter is required if you specify ParentVM name."
                    break
                }
                try {
                    $spec.ImageMaintenanceSettings = Set-HVFarmSpec -vcId $vcId -spec $spec.ImageMaintenanceSettings
                } catch {
                    Write-Error "SCHEDULEMAINTENANCE task failed with error: $_"
                    break
                }
            }

            #set ComputeProfile in a SCHEDULEMAINTENANCE
            $spec.ComputeProfile = New-Object VMware.Hv.FarmComputeProfileSpec
            $spec.ComputeProfile.NumCPU = $NumCPU
            $spec.ComputeProfile.Ram = $Ram
            $spec.ComputeProfile.CoresPerSocket = $CoresPerSocket

            # call scheduleMaintenance service on farm
            if (!$confirmFlag -OR  $pscmdlet.ShouldProcess($farmList.$item)) {
              $farm_service_helper.Farm_ScheduleMaintenance($services, $item, $spec)
              Write-Host "Performed SCHEDULEMAINTENANCE task on farm: " $farmList.$item
            }
          }
        }
        'CANCELMAINTENANCE' {
            if (!$confirmFlag -OR  $pscmdlet.ShouldProcess($farmList.$item)) {
              $farm_service_helper.Farm_CancelScheduleMaintenance($services, $item, $MaintenanceMode)
              Write-Host "Performed CANCELMAINTENANCE task on farm: " $farmList.$item
            }
          }
        }
      return
    }
  }

}

function Get-AllRDSServersInFarm ($Services,$Farm,$ServerList) {
  [VMware.Hv.RDSServerId[]]$servers = @()
  $query_service_helper = New-Object VMware.Hv.QueryServiceService
  $remainingCount = 1 # run through loop at least once
  $query = New-Object VMware.Hv.QueryDefinition
  $query.queryEntityType = 'RDSServerSummaryView'
  $farmFilter = New-Object VMware.Hv.QueryFilterEquals -Property @{ 'MemberName' = 'base.farm'; 'value' = $farm }
  if ($serverList) {
    $serverFilters = [VMware.Hv.queryFilter[]]@()
    foreach ($name in $serverList) {
      $serverFilters += (New-Object VMware.Hv.QueryFilterEquals -Property @{ 'memberName' = 'base.name'; 'value' = $name })
    }
    $serverList = New-Object VMware.Hv.QueryFilterOr -Property @{ 'filters' = $serverFilters }
    $treeList = @()
    $treeList += $serverList
    $treelist += $farmFilter
    $query.Filter = New-Object VMware.Hv.QueryFilterAnd -Property @{ 'filters' = $treeList }
  } else {
    $query.Filter = $farmFilter
  }
  while ($remainingCount -ge 1) {
    $queryResults = $query_service_helper.QueryService_Query($services,$query)
    $results = $queryResults.results
    $servers += $results.id
    $query.StartingOffset = $query.StartingOffset + $queryResults.results.Count
    $remainingCount = $queryResults.RemainingCount
  }
  return $servers
}

function Set-HVFarmSpec {
  param(
    [Parameter(Mandatory = $true)]
    [VMware.Hv.VirtualCenterId]$VcID,

    [Parameter(Mandatory = $true)]
    $Spec
  )
  if ($parentVM) {
    $parentList = Get-HVBaseImageVmList -vcID $vcID
    $parentVMObj = $parentList | Where-Object { $_.name -eq $parentVM }
    if ($null -eq $parentVMObj) {
      throw "No Parent VM found with name: [$parentVM]"
    }
    $spec.ParentVm = $parentVMObj.id
  }
  if ($snapshotVM) {
    $parentVM = $spec.ParentVm.id
    $baseImageSnapshot_service_helper = New-Object VMware.Hv.BaseImageSnapshotService
    $snapshotList = $baseImageSnapshot_service_helper.BaseImageSnapshot_List($services, $spec.ParentVm)
    $snapshotVMObj = $snapshotList | Where-Object { $_.name -eq $snapshotVM }
    if ($null -eq $snapshotVMObj) {
      throw "No Snapshot found with name: [$snapshotVM] for VM name: [$parentVM] "
    }
    $spec.Snapshot = $snapshotVMObj.id
  }
  return $spec
}

function Start-HVPool {
<#
.SYNOPSIS
    Perform maintenance tasks on Pool.

.DESCRIPTION
    This cmdlet is used to perform maintenance tasks like enable/disable the pool, enable/disable the provisioning of a pool, refresh, rebalance, recompose, push image and cancel image. Push image and Cancel image tasks only applies for instant clone pool.

.PARAMETER Pool
    Name/Object(s) of the pool.

.PARAMETER Refresh
    Switch parameter to refresh operation.

.PARAMETER Recompose
    Switch parameter to recompose operation.

.PARAMETER Rebalance
    Switch parameter to rebalance operation.

.PARAMETER SchedulePushImage
    Switch parameter to push image operation.

.PARAMETER CancelPushImage
    Switch parameter to cancel push image operation.

.PARAMETER StartTime
    Specifies when to start the operation. If unset, the operation will begin immediately.

.PARAMETER LogoffSetting
    Determines when to perform the operation on machines which have an active session. This property will be one of:
    'FORCE_LOGOFF' - Users will be forced to log off when the system is ready to operate on their virtual machines.
    'WAIT_FOR_LOGOFF' - Wait for connected users to disconnect before the task starts. The operation starts immediately on machines without active sessions.

.PARAMETER StopOnFirstError
    Indicates that the operation should stop on first error.

.PARAMETER Machines
    The machine names to recompose. These must be associated with the pool.

.PARAMETER ParentVM
    New base image VM for the desktop. This must be in the same datacenter as the base image of the desktop.

.PARAMETER SnapshotVM
    Name of the snapshot used in pool deployment.

.PARAMETER Vcenter
    Virtual Center server-address (IP or FQDN) of the given pool. This should be same as provided to the Connection Server while adding the vCenter server.

.PARAMETER HvServer
    View API service object of Connect-HVServer cmdlet.

.EXAMPLE
    Start-HVPool -Recompose -Pool 'LCPool3' -LogoffSetting FORCE_LOGOFF -ParentVM 'View-Agent-Win8' -SnapshotVM 'Snap_USB'
    Requests a recompose of machines in the specified pool

.EXAMPLE
    Start-HVPool -Refresh -Pool 'LCPool3' -LogoffSetting FORCE_LOGOFF -Confirm:$false
    Requests a refresh of machines in the specified pool

.EXAMPLE
    $myTime = Get-Date '10/03/2016 12:30:00'
    Start-HVPool -Rebalance -Pool 'LCPool3' -LogoffSetting FORCE_LOGOFF -StartTime $myTime
    Requests a rebalance of machines in a pool with specified time

.EXAMPLE
    Start-HVPool -SchedulePushImage -Pool 'InstantPool' -LogoffSetting FORCE_LOGOFF -ParentVM 'InsParentVM' -SnapshotVM 'InsSnapshotVM'
    Requests an update of push image operation on the specified Instant Clone Engine sourced pool

.EXAMPLE
    Start-HVPool -CancelPushImage -Pool 'InstantPool'
    Requests a cancellation of the current scheduled push image operation on the specified Instant Clone Engine sourced pool

.OUTPUTS
    None

.NOTES
    Author                      : Praveen Mathamsetty.
    Author email                : pmathamsetty@vmware.com
    Version                     : 1.1

    ===Tested Against Environment====
    Horizon View Server Version : 7.0.2, 7.1.0
    PowerCLI Version            : PowerCLI 6.5, PowerCLI 6.5.1
    PowerShell Version          : 5.0
#>

  [CmdletBinding(
    SupportsShouldProcess = $true,
    ConfirmImpact = 'High'
  )]
  param(
    # handles both objects and string
    [Parameter(Mandatory = $true,ValueFromPipeline = $true)]
    $Pool,

    [Parameter(Mandatory = $false,ParameterSetName = 'REFRESH')]
    [switch]$Refresh,

    [Parameter(Mandatory = $false,ParameterSetName = 'RECOMPOSE')]
    [switch]$Recompose,

    [Parameter(Mandatory = $false,ParameterSetName = 'REBALANCE')]
    [switch]$Rebalance,

    [Parameter(Mandatory = $false,ParameterSetName = 'PUSH_IMAGE')]
    [switch]$SchedulePushImage,

    [Parameter(Mandatory = $false,ParameterSetName = 'CANCEL_PUSH_IMAGE')]
    [switch]$CancelPushImage,

    [Parameter(Mandatory = $false,ParameterSetName = 'REBALANCE')]
    [Parameter(Mandatory = $false,ParameterSetName = 'RECOMPOSE')]
    [Parameter(Mandatory = $false,ParameterSetName = 'REFRESH')]
    [Parameter(Mandatory = $false,ParameterSetName = 'PUSH_IMAGE')]
    [System.DateTime]$StartTime,

    [Parameter(Mandatory = $true,ParameterSetName = 'REBALANCE')]
    [Parameter(Mandatory = $true,ParameterSetName = 'RECOMPOSE')]
    [Parameter(Mandatory = $true,ParameterSetName = 'REFRESH')]
    [Parameter(Mandatory = $false,ParameterSetName = 'PUSH_IMAGE')]
    [ValidateSet('FORCE_LOGOFF','WAIT_FOR_LOGOFF')]
    [string]$LogoffSetting,

    [Parameter(Mandatory = $false,ParameterSetName = 'REBALANCE')]
    [Parameter(Mandatory = $false,ParameterSetName = 'RECOMPOSE')]
    [Parameter(Mandatory = $false,ParameterSetName = 'REFRESH')]
    [Parameter(Mandatory = $false,ParameterSetName = 'PUSH_IMAGE')]
    [boolean]$StopOnFirstError = $true,

    [Parameter(Mandatory = $false,ParameterSetName = 'REBALANCE')]
    [Parameter(Mandatory = $false,ParameterSetName = 'RECOMPOSE')]
    [Parameter(Mandatory = $false,ParameterSetName = 'REFRESH')]
    [string []]$Machines,

    [Parameter(Mandatory = $true,ParameterSetName = 'RECOMPOSE')]
    [Parameter(Mandatory = $false,ParameterSetName = 'PUSH_IMAGE')]
    [string]$ParentVM,

    [Parameter(Mandatory = $true,ParameterSetName = 'RECOMPOSE')]
    [Parameter(Mandatory = $false,ParameterSetName = 'PUSH_IMAGE')]
    [string]$SnapshotVM,

    [Parameter(Mandatory = $false,ParameterSetName = 'RECOMPOSE')]
    [Parameter(Mandatory = $false,ParameterSetName = 'PUSH_IMAGE')]
    [string]$Vcenter,

    [Parameter(Mandatory = $false)]
    $HvServer = $null
  )


  begin {
    $services = Get-ViewAPIService -hvServer $hvServer
    if ($null -eq $services) {
      Write-Error "Could not retrieve ViewApi services from connection object"
      break
    }
  }

  process {
    $confirmFlag = Get-HVConfirmFlag -keys $PsBoundParameters.Keys
    $poolList = @{}
    $poolType = @{}
    $poolSource = @{}
    $poolProvisioningSpecs = @{}
    if ($pool) {
      foreach ($item in $pool) {
        if ($item.GetType().name -eq 'DesktopInfo') {
          $id = $item.id
          $name = $item.base.name
          $source = $item.source
          $type = $item.type
        } elseif ($item.GetType().name -eq 'DesktopSummaryView') {
          $id = $item.id
          $name = $item.desktopsummarydata.name
          $source = $item.desktopsummarydata.source
          $type = $item.desktopsummarydata.type
        } elseif ($item.GetType().name -eq 'String') {
          try {
            $poolObj = Get-HVPoolSummary -poolName $item -suppressInfo $true -hvServer $hvServer
          } catch {
            Write-Error "Make sure Get-HVPoolSummary advanced function is loaded, $_"
            break
          }
          if ($poolObj) {
            $id = $poolObj.id
            $name = $poolObj.desktopsummarydata.name
            $source = $poolObj.desktopsummarydata.source
            $type = $poolObj.desktopsummarydata.type
          } else {
            Write-Error "No desktopsummarydata found with pool name: [$item]"
            break
          }
          try {
            $poolSettingsObj = Get-HVPool -poolName $item -suppressInfo $true -hvServer $hvServer
          } catch {
            Write-Error "Make sure Get-HVPool advanced function is loaded, $_"
            break
          }
          if ($poolSettingsObj) {
            $poolProvisioningSettings = $poolSettingsObj.AutomatedDesktopData.VirtualCenterProvisioningSettings
            Write-Verbose "retrieved Pool Settings: $($poolProvisioningSettings | Out-String)"
          } else {
            Write-Error "No pool information found with pool name: [$item]"
            break
          }
        } else {
          Write-Error "In pipeline did not get object of expected type DesktopSummaryView/DesktopInfo"
          break
        }
        $poolList.Add($id,$name)
        $poolType.Add($id,$type)
        $poolSource.Add($id,$source)
        $poolProvisioningSpecs.Add($id,$poolProvisioningSettings)
      }
    }
  }

  end {
    foreach ($item in $poolList.Keys) {
      $operation = $PsCmdlet.ParameterSetName
      Write-Host "Performing $operation on" $poolList.$item
      $desktop_helper = New-Object VMware.Hv.DesktopService
      switch ($operation) {
        'REBALANCE' {
          $spec = Get-HVTaskSpec -Source $poolSource.$item -poolName $poolList.$item -operation $operation -taskSpecName 'DesktopRebalanceSpec' -desktopId $item
          if ($null -ne $spec) {
            # make sure current task on VMs, must be None
            if (!$confirmFlag -OR  $pscmdlet.ShouldProcess($poolList.$item)) {
              $desktop_helper.Desktop_Rebalance($services,$item,$spec)
            }
            Write-Host "Performed rebalance task on Pool: " $PoolList.$item
          }
        }
        'REFRESH' {
          $spec = Get-HVTaskSpec -Source $poolSource.$item -poolName $poolList.$item -operation $operation -taskSpecName 'DesktopRefreshSpec' -desktopId $item
          if ($null -ne $spec) {
            # make sure current task on VMs, must be None
            if (!$confirmFlag -OR  $pscmdlet.ShouldProcess($poolList.$item)) {
              $desktop_helper.Desktop_Refresh($services,$item,$spec)
            }
            Write-Host "Performed refresh task on Pool: " $PoolList.$item
          }
        }
        'RECOMPOSE' {
          $spec = Get-HVTaskSpec -Source $poolSource.$item -poolName $poolList.$item -operation $operation -taskSpecName 'DesktopRecomposeSpec' -desktopId $item
          if ($null -ne $spec) {
            $vcId = Get-VcenterID -services $services -vCenter $vCenter
            $spec = Set-HVPoolSpec -vcId $vcId -spec $spec

            # make sure current task on VMs, must be None
            $desktop_helper.Desktop_Recompose($services,$item,$spec)

            # Update Base Image VM and Snapshot in Pool
            $updates = @()
            $updates += Get-MapEntry -key 'automatedDesktopData.virtualCenterProvisioningSettings.virtualCenterProvisioningData.parentVm' -value $spec.ParentVM
            $updates += Get-MapEntry -key 'automatedDesktopData.virtualCenterProvisioningSettings.virtualCenterProvisioningData.snapshot' -value $spec.Snapshot
            if ($startTime) { $spec.startTime = $startTime }
	    if (!$confirmFlag -OR  $pscmdlet.ShouldProcess($poolList.$item)) {
              $desktop_helper.Desktop_Update($services,$item,$updates)
            }
            Write-Host "Performed recompose task on Pool: " $PoolList.$item
          }
        }
        'PUSH_IMAGE' {
          if ($poolSource.$item -ne 'INSTANT_CLONE_ENGINE') {
            Write-Error "$poolList.$item is not a INSTANT CLONE pool"
            break
          } else {
            $spec = New-Object VMware.Hv.DesktopPushImageSpec
            $vcId = Get-VcenterID -services $services -vCenter $vCenter
            $spec = Set-HVPoolSpec -vcId $vcId -spec $spec
            $spec.Settings = New-Object VMware.Hv.DesktopPushImageSettings
            $spec.Settings.LogoffSetting = $logoffSetting
            $spec.Settings.StopOnFirstError = $stopOnFirstError
            $spec.Settings.AddVirtualTPM = ($poolProvisioningSpecs.$item).AddVirtualTPM
            If (($poolProvisioningSpecs.$item).AddVirtualTPM) {
            Write-Verbose -Message "Restoring previous vTPM state"
            }
            Write-Debug -Message "fetched pool provisioning specs: $(($poolProvisioningSpecs.$item) | Out-String)"
            if ($startTime) { $spec.Settings.startTime = $startTime }
            if (!$confirmFlag -OR  $pscmdlet.ShouldProcess($poolList.$item)) {
              $desktop_helper.Desktop_SchedulePushImage($services,$item,$spec)
            }
            Write-Host "Performed push_image task on Pool: " $PoolList.$item
          }
        }
        'CANCEL_PUSH_IMAGE' {
          if ($poolSource.$item -ne 'INSTANT_CLONE_ENGINE') {
            Write-Error "$poolList.$item is not a INSTANT CLONE pool"
            break
          } else {
            if (!$confirmFlag -OR  $pscmdlet.ShouldProcess($poolList.$item)) {
              $desktop_helper.Desktop_CancelScheduledPushImage($services,$item)
            }
            Write-Host "Performed cancel_push_image task on Pool: " $PoolList.$item
          }
        }
      }
    }
  }
}

function Get-Machine ($Pool,$MachineList) {
  [VMware.Hv.MachineId[]]$machines = @()
  $remainingCount = 1 # run through loop at least once
  $query = New-Object VMware.Hv.QueryDefinition
  $query.queryEntityType = 'MachineSummaryView'
  $poolFilter = New-Object VMware.Hv.QueryFilterEquals -Property @{ 'MemberName' = 'base.desktop'; 'value' = $pool }
  if ($machineList) {
    $machineFilters = [vmware.hv.queryFilter[]]@()
    foreach ($name in $machineList) {
      $machineFilters += (New-Object VMware.Hv.QueryFilterEquals -Property @{ 'memberName' = 'base.name'; 'value' = $name })
    }
    $machineList = New-Object VMware.Hv.QueryFilterOr -Property @{ 'filters' = $machineFilters }
    $treeList = @()
    $treeList += $machineList
    $treelist += $poolFilter
    $query.Filter = New-Object VMware.Hv.QueryFilterAnd -Property @{ 'filters' = $treeList }
  } else {
    $query.Filter = $poolFilter
  }
  while ($remainingCount -ge 1) {
    $query_service_helper = New-Object VMware.Hv.QueryServiceService
    $queryResults = $query_service_helper.QueryService_Query($services, $query)
    $results = $queryResults.results
    $machines += $results.id
    $query.StartingOffset = $query.StartingOffset + $queryResults.results.Count
    $remainingCount = $queryResults.RemainingCount
  }
  return $machines
}

function Get-HVBaseImageVM {
  <#
  .Synopsis
    Gets a list of compatible base image virtual machines.

  .DESCRIPTION
    Queries and returns BaseImageVmInfo for the specified vCenter Server.

  .PARAMETER HvServer
    Reference to Horizon View Server to query the virtual machines from. If the value is not passed or null then
    first element from global:DefaultHVServers would be considered in place of hvServer.

  .PARAMETER VirtualCenter
    A parameter to specify which vCenter Server to check base image VMs for. It can be specified as a String,
    containing the name of the vCenter, or as a vCenter object as returned by Get-HVvCenterServer. If the value is
    not passed or null then first element returned from Get-HVvCenterServer would be considered in place of VirtualCenter.

  .PARAMETER Type
    A parameter to define the type of compatability to check the base image VM list against. Valid options are 'VDI', 'RDS', or 'ALL'
    'VDI' will return all desktop compatible Base Image VMs.
    'RDS' will return all RDSH compatible Base Image VMs.
    'ALL' will return all Base Image VMs, regardless of compatibility.
    The default value is 'ALL'.

  .PARAMETER Name
    The name of a virtual machine (if known), to filter Base Image VMs on. Wildcards are accepted. If Name is specified, then Type
    is not considered for filtering.

  .EXAMPLE
    Get-HVBaseImageVM -VirtualCenter 'vCenter1' -Type VDI

  .EXAMPLE
    Get-HVBaseImageVM -VirtualCenter $vCenter1 -Type ALL

  .EXAMPLE
    Get-HVBaseImageVM -Name '*WIN10*'

  .OUTPUTS
    Returns array of object type VMware.Hv.BaseImageVmInfo

  .NOTES
      Author                      : Matt Frey.
      Author email                : mfrey@vmware.com
      Version                     : 1.0

      ===Tested Against Environment====
      Horizon View Server Version : 7.7
      PowerCLI Version            : PowerCLI 11.2.0
      PowerShell Version          : 5.1
  #>

  [cmdletbinding(
    DefaultParameterSetName='Type'
  )]

  param(
    [Parameter(Mandatory = $false)]
    $HvServer = $null,

    [Parameter(Mandatory = $false)]
    $VirtualCenter = $null,

    [Parameter(Mandatory = $false,ParameterSetName = 'Type')]
    [ValidateSet('VDI','RDS','ALL')]
    $Type = 'VDI',

    [Parameter(Mandatory = $false,ParameterSetName = 'Name')]
    [string]$Name = $null
  )

  begin {
    $services = Get-ViewAPIService -hvServer $hvServer

    if ($null -eq $services) {
      Write-Error "Could not retrieve ViewApi services from connection object"
      break
    }

    if ($null -eq $PSBoundParameters.VirtualCenter) {
      $VirtualCenterId = Get-HVvCenterServer | Select-Object -First 1 -ExpandProperty Id
    } else {
      $objType = $VirtualCenter.getType() | Select-Object -ExpandProperty Name
      Switch ($objType) {
        'String' {
          $VirtualCenterId = Get-HVvCenterServer -Name $VirtualCenter | Select-Object -ExpandProperty Id
        }
        'VirtualCenterInfo' {
          $VirtualCenterId = $VirtualCenter | Select-Object -ExpandProperty Id
        }
        'VirtualCenterId' {
          $VirtualCenterId = $VirtualCenter
        }
      }
    }

  }

  process {

    if ((Get-HVModuleVersion) -lt [version] "12.2") {
        $BaseImageVMList = $services.BaseImageVM.BaseImageVM_List($VirtualCenter)
    } else {
        $BaseImageVMList = $services.BaseImageVM.BaseImageVM_List($VirtualCenter, $null)
    }

    #For all conditions, see https://vdc-download.vmware.com/vmwb-repository/dcr-public/3721109b-48a5-4ffb-a0ad-6d6a44f2f288/ff45dfca-1050-4265-93ef-4e7d702322e4/vdi.utils.virtualcenter.BaseImageVm.BaseImageVmIncompatibleReasons.html

    If ($null -ne $PSBoundParameters.Name) {
      $CompatibleBaseImageVMs = $BaseImageVMList | Where-Object {$_.Name -like $Name}
    } Else {
      Switch ($Type) {

        'VDI' {
          $CompatibleBaseImageVMs = $BaseImageVMList | Where-Object {
            ($_.IncompatibleReasons.InUseByDesktop -eq $false) -and
            ($_.IncompatibleReasons.InUseByLinkedCloneDesktop -eq $false) -and
            ($_.IncompatibleReasons.ViewComposerReplica -eq $false) -and
            ($_.IncompatibleReasons.UnsupportedOS -eq $false) -and
            ($_.IncompatibleReasons.NoSnapshots -eq $false) -and
            (($null -eq $_.IncompatibleReasons.InstantInternal) -or ($_.IncompatibleReasons.InstantInternal -eq $false)) -and
            $(if ((Get-HVModuleVersion) -gt [version] "12.2") {($_.IncompatibleReasons.inUseByInstantCloneDesktop -eq $false)})
          }
        }
        'RDS' {
          $CompatibleBaseImageVMs = $BaseImageVMList | Where-Object {
            ($_.IncompatibleReasons.InUseByDesktop -eq $false) -and
            ($_.IncompatibleReasons.InUseByLinkedCloneDesktop -eq $false) -and
            ($_.IncompatibleReasons.ViewComposerReplica -eq $false) -and
            ($_.IncompatibleReasons.UnsupportedOSForLinkedCloneFarm -eq $false) -and
            ($_.IncompatibleReasons.NoSnapshots -eq $false) -and
            (($null -eq $_.IncompatibleReasons.InstantInternal) -or ($_.IncompatibleReasons.InstantInternal -eq $false)) -and
            $(if ((Get-HVModuleVersion) -gt [version] "12.2") {($_.IncompatibleReasons.inUseByInstantCloneDesktop -eq $false)})
          }
        }
        'ALL' {
          $CompatibleBaseImageVMs = $BaseImageVMList
        }

      }
    }

  }

  end {

    return $CompatibleBaseImageVMs

  }
}

function Get-HVBaseImageSnapshot {
  <#
  .Synopsis
    Gets a list of compatible base image virtual machines.

  .DESCRIPTION
    Queries and returns BaseImageVmInfo for the specified vCenter Server.

  .PARAMETER HvServer
    Reference to Horizon View Server to query the virtual machines from. If the value is not passed or null then
    first element from global:DefaultHVServers would be considered in place of hvServer.

  .PARAMETER BaseImageVM
    The BaseImageVM to query snapshots for. This parameter is required. Wildcards are accepted. This parameter also supports
    pipeline operations with Get-HVBaseImageVM

  .EXAMPLE
    Get-HVBaseImageSnapshots -BaseImageVM 'WIN10-BaseImage'

  .EXAMPLE
    Get-HVBaseImageSnapshots -BaseImageVM '*WIN10*'

  .EXAMPLE
    Get-HVBaseImageVM -Name 'WIN10-BaseImage' | Get-HVBaseImageSnapshots

  .OUTPUTS
    Array of object type VMware.Hv.BaseImageSnapshotInfo

  .NOTES
      Author                      : Matt Frey.
      Author email                : mfrey@vmware.com
      Version                     : 1.0

      ===Tested Against Environment====
      Horizon View Server Version : 7.7
      PowerCLI Version            : PowerCLI 11.2.0
      PowerShell Version          : 5.1
  #>

  [cmdletbinding(
    DefaultParameterSetName='Type'
  )]

  param(
    [Parameter(Mandatory = $false)]
    $HvServer = $null,

    [Parameter(Mandatory = $true,ValueFromPipeLine=$true)]
    $BaseImageVM = $null
  )

  begin {
    $services = Get-ViewAPIService -hvServer $hvServer

    if ($null -eq $services) {
      Write-Error "Could not retrieve ViewApi services from connection object"
      break
    }

  }

  process {

    if ($null -ne $PSBoundParameters.BaseImageVM) {
      $objType = $BaseImageVM.getType() | Select-Object -ExpandProperty Name
      Switch ($objType) {
        'String' {
          $BaseImageVMObj = Get-HVBaseImageVM -Name $BaseImageVM
        }
        'BaseImageVMInfo' {
          $BaseImageVMObj = $BaseImageVM
        }
        'Object[]' {
          Write-Error 'This function cannot accept an array of Base Image VMs. You must specify only a single Base Image VM.'
          Break
        }
      }
      $BaseImageSnapshotList = $services.BaseImageSnapshot.BaseImageSnapshot_List($BaseImageVMObj.Id)
    }

  }

  end {

    return $BaseImageSnapshotList

  }
}

function Set-HVPoolSpec {
  param(
    [Parameter(Mandatory = $true)]
    [VMware.Hv.VirtualCenterId]$VcID,

    [Parameter(Mandatory = $true)]
    $Spec
  )
  if ($parentVM) {
    $parentList = Get-HVBaseImageVmList -vcID $vcID
    $parentVMObj = $parentList | Where-Object { $_.name -eq $parentVM }
    $spec.ParentVm = $parentVMObj.id
  }
  if ($snapshotVM) {
    $baseimage_snapshot_helper = New-Object VMware.Hv.BaseImageSnapshotService
    $snapshotList = $baseimage_snapshot_helper.BaseImageSnapshot_List($services,$spec.ParentVm)
    $snapshotVMObj = $snapshotList | Where-Object { $_.name -eq $snapshotVM }
    $spec.Snapshot = $snapshotVMObj.id
  }
  return $spec
}

function Get-HVTaskSpec {
  param(
    [Parameter(Mandatory = $true)]
    [string]$Source,

    [Parameter(Mandatory = $true)]
    [string]$PoolName,

    [Parameter(Mandatory = $true)]
    [string]$Operation,

    [Parameter(Mandatory = $true)]
    [string]$TaskSpecName,

    [Parameter(Mandatory = $true)]
    $DesktopId

  )
  if ($source -ne 'VIEW_COMPOSER') {
    Write-Error "$operation task is not supported for pool type: [$source]"
    return $null
  }
  $machineList = Get-Machine $desktopId $machines
  if ($machineList.Length -eq 0) {
    Write-Error "Failed to get any Virtual Center machines with the given pool name: [$poolName]"
    return $null
  }
  $spec = Get-HVObject -TypeName $taskSpecName
  $spec.LogoffSetting = $logoffSetting
  $spec.StopOnFirstError = $stopOnFirstError
  $spec.Machines = $machineList
  if ($startTime) { $spec.startTime = $startTime }
  return $spec
}

function Find-HVMachine {
  [CmdletBinding()]
  param(
    [Parameter(Mandatory = $true)]
    $Param
  )

  $params = $Param

  try {
    if ($params['PoolName']) {
      $poolObj = Get-HVPoolSummary -poolName $params['PoolName'] -suppressInfo $true -hvServer $params['HvServer']
      if ($poolObj.Length -ne 1) {
        Write-Host "Failed to retrieve specific pool object with given PoolName : " $params['PoolName']
        break;
      } else {
        $desktopId = $poolObj.Id
      }
    }
  } catch {
    Write-Error "Make sure Get-HVPoolSummary advanced function is loaded, $_"
    break
  }
  #
  # This translates the function arguments into the View API properties that must be queried
  $machineSelectors = @{
    'PoolName' = 'base.desktop';
    'MachineName' = 'base.name';
    'DnsName' = 'base.dnsName';
    'State' = 'base.basicState';
  }


  $query_service_helper = New-Object VMware.Hv.QueryServiceService
  $query = New-Object VMware.Hv.QueryDefinition

  $wildCard = $false
  #Only supports wild card '*'
  if ($params['MachineName'] -and $params['MachineName'].contains('*')) {
    $wildcard = $true
  }
  if ($params['DnsName'] -and $params['DnsName'].contains('*')) {
    $wildcard = $true
  }
  # build the query values, MachineNamesView is having more info than
  # MachineSummaryView
  $query.queryEntityType = 'MachineNamesView'
  if (! $wildcard) {
    [VMware.Hv.queryfilter[]]$filterSet = @()
    foreach ($setting in $machineSelectors.Keys) {
      if ($null -ne $params[$setting]) {
        $equalsFilter = New-Object VMware.Hv.QueryFilterEquals
        $equalsFilter.memberName = $machineSelectors[$setting]
        if ($equalsFilter.memberName -eq 'base.desktop') {
            $equalsFilter.value = $desktopId
        } else {
            $equalsFilter.value = $params[$setting]
        }
        $filterSet += $equalsFilter
      }
    }
    if ($filterSet.Count -gt 0) {
      $andFilter = New-Object VMware.Hv.QueryFilterAnd
      $andFilter.Filters = $filterset
      $query.Filter = $andFilter
    }
    $machineList = @()
    $GetNext = $false
    $queryResults = $query_service_helper.QueryService_Create($services, $query)
    do {
      if ($GetNext) { $queryResults = $query_service_helper.QueryService_GetNext($services, $queryResults.id) }
      $machineList += $queryResults.results
      $GetNext = $true
    } while ($queryResults.remainingCount -gt 0)
    $query_service_helper.QueryService_Delete($services, $queryResults.id)
  }
  if ($wildcard -or [string]::IsNullOrEmpty($machineList)) {
    $query.Filter = $null
    $machineList = @()
    $GetNext = $false
    $queryResults = $query_service_helper.QueryService_Create($services,$query)
    do {
      if ($GetNext) { $queryResults = $query_service_helper.QueryService_GetNext($services, $queryResults.id) }
      $strFilterSet = @()
      foreach ($setting in $machineSelectors.Keys) {
        if ($null -ne $params[$setting]) {
          if ($wildcard -and (($setting -eq 'MachineName') -or ($setting -eq 'DnsName')) ) {
            $strFilterSet += '($_.' + $machineSelectors[$setting] + ' -like "' + $params[$setting] + '")'
          } else {
            $strFilterSet += '($_.' + $machineSelectors[$setting] + ' -eq "' + $params[$setting] + '")'
          }
        }
      }
      $whereClause =  [string]::Join(' -and ', $strFilterSet)
      $scriptBlock = [Scriptblock]::Create($whereClause)
      $machineList += $queryResults.results | Where-Object $scriptBlock
      $GetNext = $true
    } while ($queryResults.remainingCount -gt 0)
    $query_service_helper.QueryService_Delete($services, $queryResults.id)
  }
  return $machineList
}


function Get-HVMachine {
<#
.Synopsis
   Gets virtual Machine(s) information with given search parameters.

.DESCRIPTION
   Queries and returns virtual machines information, the machines list would be determined
   based on queryable fields poolName, dnsName, machineName, state. When more than one
   fields are used for query the virtual machines which satisfy all fields criteria would be returned.

.PARAMETER PoolName
   Pool name to query for.
   If the value is null or not provided then filter will not be applied,
   otherwise the virtual machines which has name same as value will be returned.

.PARAMETER MachineName
   The name of the Machine to query for.
   If the value is null or not provided then filter will not be applied,
   otherwise the virtual machines which has display name same as value will be returned.

.PARAMETER DnsName
   DNS name for the Machine to filter with.
   If the value is null or not provided then filter will not be applied,
   otherwise the virtual machines which has display name same as value will be returned.

.PARAMETER State
   The basic state of the Machine to filter with.
   If the value is null or not provided then filter will not be applied,
   otherwise the virtual machines which has display name same as value will be returned.

.PARAMETER HvServer
    Reference to Horizon View Server to query the virtual machines from. If the value is not passed or null then
    first element from global:DefaultHVServers would be considered in-place of hvServer

.EXAMPLE
   Get-HVMachine -PoolName 'ManualPool'
   Queries VM(s) with given parameter poolName

.EXAMPLE
   Get-HVMachine -MachineName 'PowerCLIVM'
   Queries VM(s) with given parameter machineName

.EXAMPLE
   Get-HVMachine -State CUSTOMIZING
   Queries VM(s) with given parameter vm state

.EXAMPLE
   Get-HVMachine -DnsName 'powercli-*'
   Queries VM(s) with given parameter dnsName with wildcard character *

.OUTPUTS
  Returns list of objects of type MachineInfo

.NOTES
    Author                      : Praveen Mathamsetty.
    Author email                : pmathamsetty@vmware.com
    Version                     : 1.1

    ===Tested Against Environment====
    Horizon View Server Version : 7.0.2, 7.1.0
    PowerCLI Version            : PowerCLI 6.5, PowerCLI 6.5.1
    PowerShell Version          : 5.0
#>

  [CmdletBinding()]

  param(
    [Parameter(Mandatory = $false)]
    [string]
    $PoolName,

    [Parameter(Mandatory = $false)]
    [string]
    $MachineName,

    [Parameter(Mandatory = $false)]
    [string]
    $DnsName,

    [Parameter(Mandatory = $false)]
    [ValidateSet('PROVISIONING','PROVISIONING_ERROR','WAIT_FOR_AGENT','CUSTOMIZING',
    'DELETING','MAINTENANCE','ERROR','PROVISIONED','AGENT_UNREACHABLE','UNASSIGNED_USER_CONNECTED',
    'CONNECTED','UNASSIGNED_USER_DISCONNECTED','DISCONNECTED','AGENT_ERR_STARTUP_IN_PROGRESS',
    'AGENT_ERR_DISABLED','AGENT_ERR_INVALID_IP','AGENT_ERR_NEED_REBOOT','AGENT_ERR_PROTOCOL_FAILURE',
    'AGENT_ERR_DOMAIN_FAILURE','AGENT_CONFIG_ERROR','ALREADY_USED','AVAILABLE','IN_PROGRESS','DISABLED',
    'DISABLE_IN_PROGRESS','VALIDATING','UNKNOWN')]
    [string]
    $State,

    [Parameter(Mandatory = $false)]
    [string]
    $JsonFilePath,

    [Parameter(Mandatory = $false)]
    $HvServer = $null
  )

  $services = Get-ViewAPIService -hvServer $hvServer
  if ($null -eq $services) {
    Write-Error "Could not retrieve ViewApi services from connection object"
    break
  }

  $machineList = Find-HVMachine -Param $PSBoundParameters
  if (!$machineList) {
    Write-Host "Get-HVMachine: No Virtual Machine(s) Found with given search parameters"
  }
  $queryResults = @()
  $desktop_helper = New-Object VMware.Hv.MachineService
  foreach ($id in $machineList.id) {
    $info = $desktop_helper.Machine_Get($services,$id)
    $queryResults += $info
  }
  $machineList = $queryResults
  return $machineList
}

function Get-HVMachineSummary {
<#
.Synopsis
   Gets virtual Machine(s) summary with given search parameters.

.DESCRIPTION
   Queries and returns virtual machines information, the machines list would be determined
   based on queryable fields poolName, dnsName, machineName, state. When more than one
   fields are used for query the virtual machines which satisfy all fields criteria would be returned.

.PARAMETER PoolName
   Pool name to query for.
   If the value is null or not provided then filter will not be applied,
   otherwise the virtual machines which has name same as value will be returned.

.PARAMETER MachineName
   The name of the Machine to query for.
   If the value is null or not provided then filter will not be applied,
   otherwise the virtual machines which has display name same as value will be returned.

.PARAMETER DnsName
   DNS name for the Machine to filter with.
   If the value is null or not provided then filter will not be applied,
   otherwise the virtual machines which has display name same as value will be returned.

.PARAMETER State
   The basic state of the Machine to filter with.
   If the value is null or not provided then filter will not be applied,
   otherwise the virtual machines which has display name same as value will be returned.

.PARAMETER SuppressInfo
   Suppress text info, when no machine found with given search parameters

.PARAMETER HvServer
    Reference to Horizon View Server to query the virtual machines from. If the value is not passed or null then
    first element from global:DefaultHVServers would be considered in-place of hvServer

.EXAMPLE
   Get-HVMachineSummary -PoolName 'ManualPool'
   Queries VM(s) with given parameter poolName

.EXAMPLE
   Get-HVMachineSummary -MachineName 'PowerCLIVM'
   Queries VM(s) with given parameter machineName

.EXAMPLE
   Get-HVMachineSummary -State CUSTOMIZING
   Queries VM(s) with given parameter vm state

.EXAMPLE
   Get-HVMachineSummary -DnsName 'powercli-*'
   Queries VM(s) with given parameter dnsName with wildcard character *

.OUTPUTS
  Returns list of objects of type MachineNamesView

.NOTES
    Author                      : Praveen Mathamsetty.
    Author email                : pmathamsetty@vmware.com
    Version                     : 1.1

    ===Tested Against Environment====
    Horizon View Server Version : 7.0.2, 7.1.0
    PowerCLI Version            : PowerCLI 6.5, PowerCLI 6.5.1
    PowerShell Version          : 5.0
#>

  [CmdletBinding()]

  param(
    [Parameter(Mandatory = $false)]
    [string]
    $PoolName,

    [Parameter(Mandatory = $false)]
    [string]
    $MachineName,

    [Parameter(Mandatory = $false)]
    [string]
    $DnsName,

    [Parameter(Mandatory = $false)]
    [ValidateSet('PROVISIONING','PROVISIONING_ERROR','WAIT_FOR_AGENT','CUSTOMIZING',
    'DELETING','MAINTENANCE','ERROR','PROVISIONED','AGENT_UNREACHABLE','UNASSIGNED_USER_CONNECTED',
    'CONNECTED','UNASSIGNED_USER_DISCONNECTED','DISCONNECTED','AGENT_ERR_STARTUP_IN_PROGRESS',
    'AGENT_ERR_DISABLED','AGENT_ERR_INVALID_IP','AGENT_ERR_NEED_REBOOT','AGENT_ERR_PROTOCOL_FAILURE',
    'AGENT_ERR_DOMAIN_FAILURE','AGENT_CONFIG_ERROR','ALREADY_USED','AVAILABLE','IN_PROGRESS','DISABLED',
    'DISABLE_IN_PROGRESS','VALIDATING','UNKNOWN')]
    [string]
    $State,

    [Parameter(Mandatory = $false)]
    [string]
    $JsonFilePath,

	[Parameter(Mandatory = $false)]
	[boolean]
	$SuppressInfo = $false,

    [Parameter(Mandatory = $false)]
    $HvServer = $null
  )

  $services = Get-ViewAPIService -hvServer $hvServer
  if ($null -eq $services) {
    Write-Error "Could not retrieve ViewApi services from connection object"
    break
  }

  $machineList = Find-HVMachine -Param $PSBoundParameters
  if (!$machineList -and !$SuppressInfo) {
    Write-Host "Get-HVMachineSummary: No machine(s) found with given search parameters"
  }
  return $machineList
}

function Get-HVPoolSpec {
<#
.Synopsis
   Gets desktop specification

.DESCRIPTION
   Converts DesktopInfo Object to DesktopSpec. Also Converts view API Ids to human readable names

.PARAMETER DesktopInfo
   An object with detailed description of a desktop instance.

.PARAMETER HvServer
    Reference to Horizon View Server to query the virtual machines from. If the value is not passed or null then
    first element from global:DefaultHVServers would be considered in-place of hvServer

.EXAMPLE
   Get-HVPoolSpec -DesktopInfo $DesktopInfoObj
   Converts DesktopInfo to DesktopSpec

.EXAMPLE
   Get-HVPool -PoolName 'LnkClnJson' | Get-HVPoolSpec -FilePath "C:\temp\LnkClnJson.json"
   Converts DesktopInfo to DesktopSpec and also dumps json object

.OUTPUTS
  Returns desktop specification

.NOTES
    Author                      : Praveen Mathamsetty.
    Author email                : pmathamsetty@vmware.com
    Version                     : 1.1

    ===Tested Against Environment====
    Horizon View Server Version : 7.0.2, 7.1.0
    PowerCLI Version            : PowerCLI 6.5, PowerCLI 6.5.1
    PowerShell Version          : 5.0
#>
  [CmdletBinding(
    SupportsShouldProcess = $true,
    ConfirmImpact = 'High'
  )]

  param(
    [Parameter(Mandatory = $true, ValueFromPipeline = $true)]
    [VMware.HV.DesktopInfo]
    $DesktopInfo,

    [Parameter(Mandatory = $false)]
    [String]
    $FilePath,

    [Parameter(Mandatory = $false)]
    $HvServer = $null
  )

  $DesktopSpec = New-Object VMware.HV.DesktopSpec
  $DesktopPsObj = (($DesktopSpec | ConvertTo-Json -Depth 14) | ConvertFrom-Json)
  $DesktopInfoPsObj = (($DesktopInfo | ConvertTo-Json -Depth 14) | ConvertFrom-Json)
  $DesktopPsObj.Type = $DesktopInfoPsObj.Type
  $DesktopPsObj.DesktopSettings = $DesktopInfoPsObj.DesktopSettings

  $entityId = New-Object VMware.HV.EntityId
  $entityId.Id = $DesktopInfoPsObj.Base.AccessGroup.Id
  $DesktopPsObj.Base = New-Object PsObject -Property @{
    name = $DesktopInfoPsObj.Base.Name;
    displayName = $DesktopInfoPsObj.Base.displayName;
    accessGroup = (Get-HVInternalName -EntityId $entityId);
    description = $DesktopInfoPsObj.Base.description;
  }

  if (! $DesktopInfoPsObj.GlobalEntitlementData.GlobalEntitlement) {
    $DesktopPsObj.GlobalEntitlementData = $null
  } else {
    $entityId = $DesktopInfoPsObj.GlobalEntitlementData.GlobalEntitlement
    $DesktopPsObj.GlobalEntitlementData = Get-HVInternalName -EntityId $entityId
  }

  Switch ($DesktopInfo.Type) {
    "AUTOMATED" {
      $specificNamingSpecObj = $null
      if ("SPECIFIED" -eq $DesktopInfoPsObj.AutomatedDesktopData.vmNamingSettings.NamingMethod) {
        $specificNamingSpecObj =  New-Object PsObject -Property @{
          specifiedNames = $null;
          startMachinesInMaintenanceMode = $DesktopInfoPsObj.AutomatedDesktopData.vmNamingSettings.SpecificNamingSettings.StartMachinesInMaintenanceMode;
          numUnassignedMachinesKeptPoweredOn = $DesktopInfoPsObj.AutomatedDesktopData.vmNamingSettings.SpecificNamingSettings.NumUnassignedMachinesKeptPoweredOn;
        }
      }
      $vmNamingSpecObj = New-Object PsObject -Property @{
        namingMethod = $DesktopInfoPsObj.AutomatedDesktopData.vmNamingSettings.NamingMethod;
        patternNamingSettings = $DesktopInfoPsObj.AutomatedDesktopData.VmNamingSettings.PatternNamingSettings;
        specificNamingSpec = $specificNamingSpecObj;
      }
      $virtualCenterProvisioningDataObj = New-Object PsObject @{
        template = $null;
        parentVm = $null;
        snapshot = $null;
        datacenter = $null;
        vmFolder = $null;
        hostOrCluster = $null;
        resourcePool= $null;
      }
      $ProvisioningSettingsObj = $DesktopInfoPsObj.AutomatedDesktopData.VirtualCenterProvisioningSettings
      if ($ProvisioningSettingsObj.VirtualCenterProvisioningData.Datacenter){
        $entityId.Id = $ProvisioningSettingsObj.VirtualCenterProvisioningData.Datacenter.Id
        $virtualCenterProvisioningDataObj.Datacenter  = Get-HVInternalName -EntityId $entityId
      }
      if ($ProvisioningSettingsObj.VirtualCenterProvisioningData.HostOrCluster){
        $entityId.Id = $ProvisioningSettingsObj.VirtualCenterProvisioningData.HostOrCluster.Id
        $virtualCenterProvisioningDataObj.HostOrCluster  = Get-HVInternalName -EntityId $entityId
      }
      if ($ProvisioningSettingsObj.VirtualCenterProvisioningData.ResourcePool){
        $entityId.Id = $ProvisioningSettingsObj.VirtualCenterProvisioningData.ResourcePool.Id
        $virtualCenterProvisioningDataObj.ResourcePool  = Get-HVInternalName -EntityId $entityId
      }
      if ($ProvisioningSettingsObj.VirtualCenterProvisioningData.ParentVm){
        $entityId.Id = $ProvisioningSettingsObj.VirtualCenterProvisioningData.ParentVm.Id
        $virtualCenterProvisioningDataObj.ParentVm  = Get-HVInternalName -EntityId $entityId `
          -VcId $DesktopInfo.AutomatedDesktopData.virtualCenter
      }
      if ($ProvisioningSettingsObj.VirtualCenterProvisioningData.Snapshot){
        $entityId.Id = $ProvisioningSettingsObj.VirtualCenterProvisioningData.Snapshot.Id
        $virtualCenterProvisioningDataObj.Snapshot  = Get-HVInternalName -EntityId $entityId `
        -BaseImageVmId $DesktopInfo.AutomatedDesktopData.VirtualCenterProvisioningSettings.VirtualCenterProvisioningData.ParentVm
      }
      if ($ProvisioningSettingsObj.VirtualCenterProvisioningData.Template){
        $entityId.Id = $ProvisioningSettingsObj.VirtualCenterProvisioningData.Template.Id
        $virtualCenterProvisioningDataObj.Template  = Get-HVInternalName -EntityId $entityId
      }
      if ($ProvisioningSettingsObj.VirtualCenterProvisioningData.VmFolder){
        $entityId.Id = $ProvisioningSettingsObj.VirtualCenterProvisioningData.VmFolder.Id
        $virtualCenterProvisioningDataObj.VmFolder  = Get-HVInternalName -EntityId $entityId
      }

      $DesktopInfoPsObj.AutomatedDesktopData.VirtualCenterProvisioningSettings.VirtualCenterProvisioningData = `
        $virtualCenterProvisioningDataObj
      $datastores = $DesktopInfoPsObj.AutomatedDesktopData.VirtualCenterProvisioningSettings.virtualCenterStorageSettings.datastores
      $dataStoresObj = Get-DataStoreName -datastores $datastores
      $DesktopInfoPsObj.AutomatedDesktopData.VirtualCenterProvisioningSettings.virtualCenterStorageSettings.datastores = `
        $dataStoresObj
      $virtualCenterStorageSettingsObj = `
        $DesktopInfoPsObj.AutomatedDesktopData.VirtualCenterProvisioningSettings.virtualCenterStorageSettings
      if($virtualCenterStorageSettingsObj.replicaDiskDatastore) {
        $entityId.Id = $virtualCenterStorageSettingsObj.replicaDiskDatastore.Id
        $DesktopInfoPsObj.AutomatedDesktopData.VirtualCenterProvisioningSettings.virtualCenterStorageSettings.replicaDiskDatastore =`
          Get-HVInternalName -EntityId $entityId
      }
      if($virtualCenterStorageSettingsObj.persistentDiskSettings) {
        $datastores = $virtualCenterStorageSettingsObj.persistentDiskSettings.persistentDiskDatastores
        $dataStoresObj = Get-DataStoreName -datastores $datastores
        $DesktopInfoPsObj.AutomatedDesktopData.VirtualCenterProvisioningSettings.virtualCenterStorageSettings.persistentDiskSettings.persistentDiskDatastores = `
          $dataStoresObj
      }
      if ($DesktopInfoPsObj.AutomatedDesktopData.customizationSettings.domainAdministrator) {
        $entityId.Id = $DesktopInfoPsObj.AutomatedDesktopData.customizationSettings.domainAdministrator.Id
        $DesktopInfoPsObj.AutomatedDesktopData.customizationSettings.domainAdministrator = Get-HVInternalName -EntityId $entityId
      }
      if ($DesktopInfoPsObj.AutomatedDesktopData.customizationSettings.adContainer) {
        $entityId.Id = $DesktopInfoPsObj.AutomatedDesktopData.customizationSettings.adContainer.Id
        $DesktopInfoPsObj.AutomatedDesktopData.customizationSettings.adContainer = Get-HVInternalName -EntityId $entityId
      }
      if ($DesktopInfoPsObj.AutomatedDesktopData.customizationSettings.sysprepCustomizationSettings) {
        $entityId.Id = `
          $DesktopInfoPsObj.AutomatedDesktopData.customizationSettings.sysprepCustomizationSettings.customizationSpec.Id
        $DesktopInfoPsObj.AutomatedDesktopData.customizationSettings.sysprepCustomizationSettings.customizationSpec = `
          Get-HVInternalName -EntityId $entityId
      }
      if ($DesktopInfoPsObj.AutomatedDesktopData.customizationSettings.cloneprepCustomizationSettings) {
        $entityId.Id = `
          $DesktopInfoPsObj.AutomatedDesktopData.customizationSettings.cloneprepCustomizationSettings.instantCloneEngineDomainAdministrator.Id
        $DesktopInfoPsObj.AutomatedDesktopData.customizationSettings.cloneprepCustomizationSettings.instantCloneEngineDomainAdministrator = `
          Get-HVInternalName -EntityId $entityId
      }

      $DesktopPsObj.AutomatedDesktopSpec = New-Object PsObject  -Property @{
        provisioningType = $DesktopInfoPsObj.AutomatedDesktopData.ProvisioningType;
        virtualCenter = $null;
        userAssignment = $DesktopInfoPsObj.AutomatedDesktopData.UserAssignment;
        virtualCenterProvisioningSettings = $DesktopInfoPsObj.AutomatedDesktopData.VirtualCenterProvisioningSettings;
        virtualCenterManagedCommonSettings = $DesktopInfoPsObj.AutomatedDesktopData.virtualCenterManagedCommonSettings;
        customizationSettings = $DesktopInfoPsObj.AutomatedDesktopData.customizationSettings;
        vmNamingSpec = $VmNamingSpecObj;
      }
      if ($DesktopInfoPsObj.AutomatedDesktopData.virtualCenter) {
        $entityId.Id = $DesktopInfoPsObj.AutomatedDesktopData.virtualCenter.Id
        $DesktopPsObj.AutomatedDesktopSpec.virtualCenter = Get-HVInternalName `
          -EntityId $entityId
      }
      break
    }
    "MANUAL" {
      $DesktopPsObj.ManualDesktopSpec = New-Object PsObject -Property @{
        userAssignment = $DesktopInfoPsObj.ManualDesktopData.UserAssignment;
        source = $DesktopInfoPsObj.ManualDesktopData.Source;
        virtualCenter = $null;
        machines = $null;
        viewStorageAcceleratorSettings = $DesktopInfoPsObj.ManualDesktopData.ViewStorageAcceleratorSettings;
        virtualCenterManagedCommonSettings = $DesktopInfoPsObj.ManualDesktopData.VirtualCenterManagedCommonSettings;
      }
      if ($DesktopInfoPsObj.ManualDesktopData.virtualCenter) {
        $entityId.Id = $DesktopInfoPsObj.ManualDesktopData.virtualCenter.Id
        $DesktopPsObj.ManualDesktopSpec.virtualCenter = Get-HVInternalName `
          -EntityId $entityId
      }
      break
    }
    "RDS" {
      $DesktopPsObj.rdsDesktopSpec =  New-Object PsObject -Property @{
        farm = $null;
      }
      break
    }
  }
  $DesktopSpecJson = ($DesktopPsObj | ConvertTo-Json -Depth 14)
  if ($filePath) {
    $DesktopSpecJson |  Out-File -FilePath $filePath
  }
  return $DesktopSpecJson
}

function Get-DataStoreName {
  param(
    [Parameter(Mandatory = $true)]
    $datastores
  )
  $dataStoresObj = @()
  $entityId = New-Object VMware.Hv.EntityId
  $datastores | ForEach-Object {
    $entityId.Id = $_.datastore.Id
    $dataStoresObj += , (New-Object PsObject -Property @{
        datastore = Get-HVInternalName -EntityId $entityId;
        storageOvercommit = $_.storageOvercommit;
    })
  }
  return $dataStoresObj
}

function Get-HVInternalName {
<#
.Synopsis
   Gets human readable name

.DESCRIPTION
   Converts Horizon API Ids to human readable names. Horizon API Ids are base64 encoded, this function
   will decode and returns internal/human readable names.

.PARAMETER EntityId
   Representation of a manageable entity id.

.PARAMETER HvServer
    Reference to Horizon View Server to query the virtual machines from. If the value is not passed or null then
    first element from global:DefaultHVServers would be considered in-place of hvServer

.EXAMPLE
   Get-HVInternalName -EntityId $entityId
   Decodes Horizon API Id and returns human readable name

.OUTPUTS
  Returns human readable name

.NOTES
    Author                      : Praveen Mathamsetty.
    Author email                : pmathamsetty@vmware.com
    Version                     : 1.1

    ===Tested Against Environment====
    Horizon View Server Version : 7.0.2, 7.1.0
    PowerCLI Version            : PowerCLI 6.5, PowerCLI 6.5.1
    PowerShell Version          : 5.0
#>
  [CmdletBinding()]
  param(
    [Parameter(Mandatory = $true)]
    [ValidateNotNullOrEmpty()]
    [VMware.HV.EntityId]
    $EntityId,

    [Parameter(Mandatory = $false)]
    [ValidateNotNullOrEmpty()]
    [VMware.HV.VirtualCenterId]
    $VcId,

    [Parameter(Mandatory = $false)]
    [ValidateNotNullOrEmpty()]
    [VMware.HV.BaseImageVmId]
    $BaseImageVmId,

    [Parameter(Mandatory = $false)]
    $HvServer = $null
  )
  begin {
    $services = Get-ViewAPIService -hvServer $hvServer
    if ($null -eq $services) {
      Write-Error "Could not retrieve ViewApi services from connection object"
      break
    }
  }
  process {
    $tokens = ($EntityId.id -split "/")
    $serviceName = $tokens[0]
    Switch ($serviceName) {
      'VirtualCenter' {
         $vc_id = New-Object VMware.HV.VirtualCenterId
         $vc_id.Id = $EntityId.Id
         return ($services.VirtualCenter.VirtualCenter_Get($vc_id)).serverSpec.serverName
       }
       'InstantCloneEngineDomainAdministrator' {
         $Icid = New-Object VMware.HV.InstantCloneEngineDomainAdministratorId
         $Icid.Id = $EntityId.Id
         $Info = $services.InstantCloneEngineDomainAdministrator.InstantCloneEngineDomainAdministrator_Get($Icid)
         return $Info.Base.Username
       }
       'BaseImageVm' {
         if ((Get-HVModuleVersion) -lt [version] "12.2") {
           $info = $services.BaseImageVm.BaseImageVm_List($VcId) | Where-Object { $_.id.id -eq  $EntityId.id }
	 } else {
           $info = $services.BaseImageVm.BaseImageVm_List($VcId, $null) | Where-Object { $_.id.id -eq  $EntityId.id }
	 }
         return $info.name
       }
       'BaseImageSnapshot' {
         $info = $services.BaseImageSnapshot.BaseImageSnapshot_List($BaseImageVmId) | Where-Object { $_.id.id -eq  $EntityId.id }
         return $info.name
       }
       'VmTemplate' {
         $info = $services.VmTemplate.VmTemplate_List($VcId) | Where-Object { $_.id.id -eq  $EntityId.id }
         return $info.name
       }
       'ViewComposerDomainAdministrator' {
         $AdministratorId = New-Object VMware.HV.ViewComposerDomainAdministratorId
         $AdministratorId.id = $EntityId.id
         $info = $services.ViewComposerDomainAdministrator.ViewComposerDomainAdministrator_Get($AdministratorId)
         return $info.base.userName
       }
       'GlobalApplicationEntitlement' {
         $info = $services.GlobalApplicationEntitlement.GlobalApplicationEntitlement_Get($EntityId)
         return $info.base.displayName
       }
       'GlobalEntitlement' {
        $GlobalEntitlementID = New-Object VMware.Hv.GlobalEntitlementId
        $GlobalEntitlementID.Id = $EntityID.Id
        $info = $services.GlobalEntitlement.GlobalEntitlement_Get($GlobalEntitlementID)
        return $info.base.displayname
       }
       default {
         $base64String  = $tokens[$tokens.Length-1]
         $mod = $base64String.Length % 4
         if ($mod -ne 0) {
           #Length of a string must be multiples of 4
           $base64String = $base64String.PadRight(($base64String.Length + (4 - $mod)), "=")
         }
         #Convert 4 bytes to 3 bytes base64 decoding
         return ([System.Text.Encoding]::ASCII.GetString([System.Convert]:: `
           FromBase64String($base64String)))
       }
    }
  }
  end {
    [System.gc]::collect()
  }
}


function Get-UserInfo {
  [CmdletBinding()]
  param(
    [Parameter(Mandatory = $true)]
    [ValidatePattern("^.+?[@\\].+?$")]
    [String]
    $UserName
  )

  if ($UserName -match '^.+?[@].+?$') {
    $info = $UserName -split "@"
    $Domain = $info[1]
    $Name = $Info[0]
  } else {
    $info = $UserName -split "\\"
    $Domain = $info[0]
    $Name = $Info[1]
  }
  return @{'Name' = $Name; 'Domain' = $Domain}
}

function New-HVEntitlement {
<#
.Synopsis
   Associates a user/group with a resource

.DESCRIPTION
   This represents a simple association between a single user/group and a resource that they can be assigned.

.PARAMETER User
   User principal name of user or group

.PARAMETER ResourceName
   The resource(Application, Desktop etc.) name.
   Supports only wildcard character '*' when resource type is desktop.

.PARAMETER Resource
   Object(s) of the resource(Application, Desktop etc.) to entitle

.PARAMETER ResourceType
   Type of Resource(Application, Desktop etc)

.PARAMETER Type
   Whether or not this is a group or a user.

.PARAMETER HvServer
   Reference to Horizon View Server. If the value is not passed or null then
   first element from global:DefaultHVServers would be considered in-place of hvServer

.EXAMPLE
   New-HVEntitlement  -User 'administrator@adviewdev.eng.vmware.com' -ResourceName 'InsClnPol' -Confirm:$false
   Associate a user/group with a pool

.EXAMPLE
   New-HVEntitlement  -User 'adviewdev\administrator' -ResourceName 'Calculator' -ResourceType Application
   Associate a user/group with a application

.EXAMPLE
   New-HVEntitlement  -User 'adviewdev.eng.vmware.com\administrator' -ResourceName 'UrlSetting1' -ResourceType URLRedirection
   Associate a user/group with a URLRedirection settings

.EXAMPLE
   New-HVEntitlement  -User 'adviewdev.eng.vmware.com\administrator' -ResourceName 'GE1' -ResourceType GlobalEntitlement
   Associate a user/group with a desktop entitlement

.EXAMPLE
   New-HVEntitlement  -User 'adviewdev\administrator' -ResourceName 'GEAPP1' -ResourceType GlobalApplicationEntitlement
   Associate a user/group with a application entitlement

.EXAMPLE
   $pools = Get-HVPool; $pools | New-HVEntitlement  -User 'adviewdev\administrator' -Confirm:$false
   Associate a user/group with list of pools


.NOTES
    Author                      : Praveen Mathamsetty.
    Author email                : pmathamsetty@vmware.com
    Version                     : 1.1

    ===Tested Against Environment====
    Horizon View Server Version : 7.0.2, 7.1.0
    PowerCLI Version            : PowerCLI 6.5, PowerCLI 6.5.1
    PowerShell Version          : 5.0
#>
  [CmdletBinding(
    SupportsShouldProcess = $true,
    ConfirmImpact = 'High'
  )]
  param(
    [Parameter(Mandatory = $true)]
    [ValidatePattern("^.+?[@\\].+?$")]
    [String]
    $User,

    [Parameter(Mandatory = $true,ParameterSetName ='Default')]
    [ValidateNotNullOrEmpty()]
    [String]
    $ResourceName,

    [Parameter(Mandatory = $true,ValueFromPipeline = $true,ParameterSetName ='PipeLine')]
    $Resource,

    [Parameter(Mandatory = $false)]
    [ValidateSet('Application','Desktop','GlobalApplicationEntitlement','GlobalEntitlement',
    'URLRedirection')]
    [String]
    $ResourceType = 'Desktop',

    [Parameter(Mandatory = $false)]
    [ValidateSet('User','Group')]
    [String]
    $Type = 'User',

    [Parameter(Mandatory = $false)]
    $HvServer = $null
  )
  begin {
    $services = Get-ViewAPIService -hvServer $hvServer
    if ($null -eq $services) {
      Write-Error "Could not retrieve ViewApi services from connection object"
      break
    }
  }
  process {
    $confirmFlag = Get-HVConfirmFlag -keys $PsBoundParameters.Keys
    $userInfo = Get-UserInfo -UserName $User
    $UserOrGroupName = $userInfo.Name
    $Domain = $userInfo.Domain
    $IsGroup = ($Type -eq 'Group')
    $filter1 = Get-HVQueryFilter 'base.name' -Eq $UserOrGroupName
    $filter2 = Get-HVQueryFilter 'base.domain' -Eq $Domain
    $filter3 = Get-HVQueryFilter 'base.group' -Eq $IsGroup
    $andFilter = Get-HVQueryFilter -And -Filters @($filter1, $filter2, $filter3)
    $results = Get-HVQueryResult -EntityType ADUserOrGroupSummaryView -Filter $andFilter -HvServer $HvServer
    if ($results.length -ne 1) {
      Write-Host "Unable to find specific user or group with given search parameters"
      return
    }
    $ResourceObjs = $null
    $info = $services.PodFederation.PodFederation_get()
    switch($ResourceType){
      "Desktop" {
        if ($ResourceName) {
          $ResourceObjs = Get-HVPool -PoolName $ResourceName -suppressInfo $true -HvServer $HvServer
          if (! $ResourceObjs) {
            Write-Host "No pool found with given resourceName: " $ResourceName
            return
          }
        } elseif ($PSCmdlet.MyInvocation.ExpectingInput -or $Resource) {
          foreach ($item in $Resource) {
            if ($item.GetType().name -eq 'DesktopInfo') {
              $ResourceObjs += ,$item
            }
            elseif ($item.GetType().name -eq 'DesktopSummaryView') {
              $ResourceObjs += ,$item
            }
            else {
              Write-Error "In pipeline didn't received object(s) of expected type DesktopSummaryView/DesktopInfo"
              return
            }
          }
        }
      }
      "Application" {
        if ($ResourceName) {
          $eqFilter = Get-HVQueryFilter 'data.name' -Eq $ResourceName
          $ResourceObjs = Get-HVQueryResult -EntityType ApplicationInfo -Filter $eqFilter -HvServer $HvServer
          if (! $ResourceObjs) {
            Write-Host "No Application found with given resourceName: " $ResourceName
            return
          }
        } elseif ($PSCmdlet.MyInvocation.ExpectingInput -or $Resource) {
          foreach ($item in $Resource) {
            if ($item.GetType().name -eq 'ApplicationInfo') {
              $ResourceObjs += ,$item

            } else {
              Write-Error "In pipeline didn't received object(s) of expected type ApplicationInfo"
              return
            }
          }
        }
      }
      "URLRedirection" {
        if ($ResourceName) {
          $UrlRedirectionList = $services.URLRedirection.URLRedirection_List()
          $ResourceObjs = $UrlRedirectionList | Where-Object { $_.urlRedirectionData.displayName -like $ResourceName}
          if (! $ResourceObjs) {
            Write-Host "No URLRedirectionData found with given resourceName: " $ResourceName
            return
          }
        } elseif ($PSCmdlet.MyInvocation.ExpectingInput -or $Resource) {
          foreach ($item in $Resource) {
            if ($item.GetType().name -eq 'URLRedirectionInfo') {
              $ResourceObjs += ,$item
            } else {
              Write-Error "In pipeline didn't received object(s) of expected type URLRedirectionInfo"
              return
            }
          }
        }
      }
      "GlobalApplicationEntitlement" {
        if ("ENABLED" -eq $info.localPodStatus.status) {
          if ($ResourceName) {
            $eqFilter = Get-HVQueryFilter 'base.displayName' -Eq $ResourceName
            $ResourceObjs = Get-HVQueryResult -EntityType GlobalApplicationEntitlementInfo -Filter $eqFilter -HvServer $HvServer
            if (! $ResourceObjs) {
              Write-Host "No globalApplicationEntitlementInfo found with given resourceName: " $ResourceName
              return
            } elseif ($PSCmdlet.MyInvocation.ExpectingInput -or $Resource) {
              foreach ($item in $Resource) {
                if ($item.GetType().name -eq 'GlobalApplicationEntitlementInfo') {
                  $ResourceObjs += ,$item
                } else {
                  Write-Error "In pipeline didn't received object(s) of expected type globalApplicationEntitlementInfo"
                  return
                }
              }
            }
          }
        } else {
          Write-Host "Multi-DataCenter-View/CPA is not enabled"
          return
        }
      }
      "GlobalEntitlement" {
        if ("ENABLED" -eq $info.localPodStatus.status) {
          if ($ResourceName) {
            $eqFilter = Get-HVQueryFilter 'base.displayName' -Eq $ResourceName
            $ResourceObjs = Get-HVQueryResult -EntityType GlobalEntitlementSummaryView -Filter $eqFilter -HvServer $HvServer
            if (! $ResourceObjs) {
              Write-Host "No globalEntitlementSummary found with given resourceName: " $ResourceName
              return
            } elseif ($PSCmdlet.MyInvocation.ExpectingInput -or $Resource) {
              foreach ($item in $Resource) {
                if ($item.GetType().name -eq 'GlobalEntitlementSummaryView') {
                  $ResourceObjs += ,$item
                } else {
                  Write-Error "In pipeline didn't received object(s) of expected type GlobalEntitlementSummaryView"
                  return
                }
              }
            }
          }
        } else {
          Write-Host "Multi-DataCenter-View/CPA is not enabled"
          return
        }
      }
    }
    $base = New-Object VMware.HV.UserEntitlementBase
    $base.UserOrGroup = $results.id
    Write-host $ResourceObjs.Length " resource(s) will be entitled with UserOrGroup: " $User
    foreach ($ResourceObj in $ResourceObjs) {
      $base.Resource = $ResourceObj.id
      if (!$confirmFlag -OR $pscmdlet.ShouldProcess($User)) {
        $id = $services.UserEntitlement.UserEntitlement_Create($base)
      }
    }
  }
  end {
    [System.gc]::collect()
  }
}


function Get-HVEntitlement {
<#
.Synopsis
   Gets association data between a user/group and a resource

.DESCRIPTION
   Provides entitlement Info between a single user/group and a resource that they can be assigned.

.PARAMETER User
   User principal name of user or group

.PARAMETER ResourceName
   The resource(Application, Desktop etc.) name.
   Supports only wildcard character '*' when resource type is desktop.

.PARAMETER Resource
   Object(s) of the resource(Application, Desktop etc.) to entitle

.PARAMETER ResourceType
   Type of Resource(Application, Desktop etc.)

.PARAMETER Type
   Whether or not this is a group or a user.

.PARAMETER HvServer
   Reference to Horizon View Server. If the value is not passed or null then
   first element from global:DefaultHVServers would be considered in-place of hvServer

.EXAMPLE
   Get-HVEntitlement -ResourceType Application
   Gets all the entitlements related to application pool

.EXAMPLE
   Get-HVEntitlement -User 'adviewdev.eng.vmware.com\administrator' -ResourceName 'calculator' -ResourceType Application
   Gets entitlements specific to user or group name and application resource

.EXAMPLE
   Get-HVEntitlement -User 'adviewdev.eng.vmware.com\administrator' -ResourceName 'UrlSetting1' -ResourceType URLRedirection
   Gets entitlements specific to user or group and URLRedirection resource

.EXAMPLE
   Get-HVEntitlement -User 'administrator@adviewdev.eng.vmware.com' -ResourceName 'GE1' -ResourceType GlobalEntitlement
   Gets entitlements specific to user or group and GlobalEntitlement resource

.NOTES
    Author                      : Praveen Mathamsetty.
    Author email                : pmathamsetty@vmware.com
    Version                     : 1.1

    ===Tested Against Environment====
    Horizon View Server Version : 7.0.2, 7.1.0
    PowerCLI Version            : PowerCLI 6.5, PowerCLI 6.5.1
    PowerShell Version          : 5.0
#>


   [CmdletBinding()]
  param(
    [Parameter(Mandatory = $false)]
    [ValidatePattern("^.+?[@\\].+?$")]
    [String]
    $User,

    [Parameter(Mandatory = $false)]
    [ValidateSet('User','Group')]
    [String]
    $Type = 'User',

    [Parameter(Mandatory = $false)]
    [ValidateNotNullOrEmpty()]
    [String]
    $ResourceName,

    [Parameter(Mandatory = $false)]
    [ValidateSet('Application','Desktop','GlobalApplicationEntitlement','GlobalEntitlement',
    'URLRedirection')]
    [String]
    $ResourceType = 'Desktop',

    [Parameter(Mandatory = $false)]
    $HvServer = $null
  )
  begin {
    $services = Get-ViewAPIService -hvServer $hvServer
    if ($null -eq $services) {
      Write-Error "Could not retrieve ViewApi services from connection object"
      break
    }
  }
  process {
    $AndFilter = @()
    $results = @()
    $ResourceObjs = $null
    if ($User) {
      $userInfo = Get-UserInfo -UserName $User
      $UserOrGroupName = $userInfo.Name
      $Domain = $userInfo.Domain
      $nameFilter = Get-HVQueryFilter 'base.loginName' -Eq $UserOrGroupName
      $AndFilter += $nameFilter
      $domainFilter = Get-HVQueryFilter 'base.domain' -Eq $Domain
      $AndFilter += $domainFilter
    }
    if ($type -eq 'group'){
    	$IsGroup = ($Type -eq 'Group')
    	$groupFilter = Get-HVQueryFilter 'base.group' -Eq $IsGroup
    	$AndFilter += $groupFilter
    }
    $info = $services.PodFederation.PodFederation_get()
    $cpaEnabled = ("ENABLED" -eq $info.localPodStatus.status)
    switch($ResourceType) {
      "Desktop" {
        if ($ResourceName) {
          $ResourceObjs = Get-HVPool -PoolName $ResourceName -suppressInfo $true -HvServer $HvServer
          if (! $ResourceObjs) {
            Write-Host "No pool found with given resourceName: " $ResourceName
            return
          }
          $AndFilter += Get-HVQueryFilter 'localData.desktops' -Contains ([VMware.Hv.DesktopId[]]$ResourceObjs.Id)
        }
        $AndFilter = Get-HVQueryFilter -And -Filters $AndFilter
        $results = (Get-HVQueryResult -EntityType EntitledUserOrGroupLocalSummaryView -Filter $AndFilter -HvServer $HvServer)
        $results = $results | Where-Object {$null -ne $_.localData.desktops}
      }
      "Application" {
        if ($ResourceName) {
          $eqFilter = Get-HVQueryFilter 'data.name' -Eq $ResourceName
          $ResourceObjs = Get-HVQueryResult -EntityType ApplicationInfo -Filter $eqFilter -HvServer $HvServer
          if (! $ResourceObjs) {
            Write-Host "No Application found with given resourceName: " $ResourceName
            return
          }
          $AndFilter += Get-HVQueryFilter 'localData.applications' -Contains ([VMware.Hv.ApplicationId[]]$ResourceObjs.Id)
        }
        $AndFilter = Get-HVQueryFilter -And -Filters $AndFilter
        $results = (Get-HVQueryResult -EntityType EntitledUserOrGroupLocalSummaryView -Filter $AndFilter -HvServer $HvServer)
        $results = $results | Where-Object {$null -ne $_.localData.applications}
      }
      "URLRedirection" {
        $localFilter = @()
        $globalFilter = @()
        $localFilter += $AndFilter
        $globalFilter += $AndFilter
        if ($ResourceName) {
          $UrlRedirectionList = $services.URLRedirection.URLRedirection_List()
          $ResourceObjs = $UrlRedirectionList | Where-Object { $_.urlRedirectionData.displayName -like $ResourceName}
          if (! $ResourceObjs) {
            Write-Host "No URLRedirectionData found with given resourceName: " $ResourceName
            return
          }
          $localFilter +=  Get-HVQueryFilter 'localData.urlRedirectionSettings' -Contains ([VMware.Hv.URLRedirectionId[]]$ResourceObjs.Id)
          if ($cpaEnabled) {
            $globalFilter += Get-HVQueryFilter 'globalData.urlRedirectionSettings' -Contains ([VMware.Hv.URLRedirectionId[]]$ResourceObjs.Id)
          }
        }
        $localFilter = Get-HVQueryFilter -And -Filters $localFilter
        $localResults = Get-HVQueryResult -EntityType EntitledUserOrGroupLocalSummaryView -Filter $localFilter -HvServer $HvServer
        $results += ($localResults | Where-Object {$null -ne $_.localData.urlRedirectionSettings})
        if ($cpaEnabled) {
          $globalFilter = Get-HVQueryFilter -And -Filters $globalFilter
          $globalResults = Get-HVQueryResult -EntityType EntitledUserOrGroupGlobalSummaryView -Filter $globalFilter -HvServer $HvServer
          $globalResults = $globalResults | Where-Object {$null -ne $_.globalData.urlRedirectionSettings}
          $results +=  $globalResults
        }
      }
      "GlobalApplicationEntitlement" {
        if (! $cpaEnabled) {
          Write-Host "Multi-DataCenter-View/CPA is not enabled"
          return
        }
        if ($ResourceName) {
          $eqFilter = Get-HVQueryFilter 'base.displayName' -Eq $ResourceName
          $ResourceObjs = Get-HVQueryResult -EntityType GlobalApplicationEntitlementInfo -Filter $eqFilter -HvServer $HvServer
          if (! $ResourceObjs) {
            Write-Host "No globalApplicationEntitlementInfo found with given resourceName: " $ResourceName
            return
          }
          $AndFilter += Get-HVQueryFilter 'globalData.globalApplicationEntitlements' -Contains ([VMware.Hv.GlobalApplicationEntitlementId[]]$ResourceObjs.Id)
        }
        $AndFilter = Get-HVQueryFilter -And -Filters $AndFilter
        $results = (Get-HVQueryResult -EntityType EntitledUserOrGroupGlobalSummaryView -Filter $AndFilter -HvServer $HvServer)
        $results = $results| Where-Object {$null -ne $_.globalData.globalApplicationEntitlements}
      }
      "GlobalEntitlement" {
        if (! $cpaEnabled) {
          Write-Host "Multi-DataCenter-View/CPA is not enabled"
          return
        }
        if ($ResourceName) {
          $eqFilter = Get-HVQueryFilter 'base.displayName' -Eq $ResourceName
          $ResourceObjs = Get-HVQueryResult -EntityType GlobalEntitlementSummaryView -Filter $eqFilter -HvServer $HvServer
          if (! $ResourceObjs) {
            Write-Host "No globalEntitlementSummary found with given resourceName: " $ResourceName
            return
          }
          $AndFilter += Get-HVQueryFilter 'globalData.globalEntitlements' -Contains ([VMware.Hv.GlobalEntitlementId[]]$ResourceObjs.Id)
        }
        $AndFilter = Get-HVQueryFilter -And -Filters $AndFilter
        $results = (Get-HVQueryResult -EntityType EntitledUserOrGroupGlobalSummaryView -Filter $AndFilter -HvServer $HvServer)
        $results = $results | Where-Object {$null -ne $_.globalData.globalEntitlements}
      }
    }
    if (! $results) {
      Write-Host "Get-HVEntitlement: No entitlements found with given search parameters"
      }
    return $results
  }
  end {
    [System.gc]::collect()
  }
}

function Remove-HVEntitlement {
<#
.Synopsis
   Deletes association data between a user/group and a resource

.DESCRIPTION
   Removes entitlement between a single user/group and a resource that already been assigned.

.PARAMETER User
   User principal name of user or group

.PARAMETER ResourceName
   The resource(Application, Desktop etc.) name.
   Supports only wildcard character '*' when resource type is desktop.

.PARAMETER Resource
   Object(s) of the resource(Application, Desktop etc.) to entitle

.PARAMETER ResourceType
   Type of Resource(Application, Desktop etc)

.PARAMETER Type
   Whether or not this is a group or a user.

.PARAMETER HvServer
   Reference to Horizon View Server. If the value is not passed or null then
   first element from global:DefaultHVServers would be considered in-place of hvServer

.EXAMPLE
   Remove-HVEntitlement -User 'administrator@adviewdev'  -ResourceName LnkClnJSon -Confirm:$false
   Deletes entitlement between a user/group and a pool resource

.EXAMPLE
   Remove-HVEntitlement -User 'adviewdev\puser2' -ResourceName 'calculator' -ResourceType Application
   Deletes entitlement between a user/group and a Application resource

.EXAMPLE
   Remove-HVEntitlement -User 'adviewdev\administrator' -ResourceName 'GEAPP1' -ResourceType GlobalApplicationEntitlement
   Deletes entitlement between a user/group and a GlobalApplicationEntitlement resource

.NOTES
    Author                      : Praveen Mathamsetty.
    Author email                : pmathamsetty@vmware.com
    Version                     : 1.1

    ===Tested Against Environment====
    Horizon View Server Version : 7.0.2, 7.1.0
    PowerCLI Version            : PowerCLI 6.5, PowerCLI 6.5.1
    PowerShell Version          : 5.0
#>


   [CmdletBinding(
    SupportsShouldProcess = $true,
    ConfirmImpact = 'High'
  )]
  param(
    [Parameter(Mandatory = $true)]
    [ValidatePattern("^.+?[@\\].+?$")]
    [String]
    $User,

    [Parameter(Mandatory = $true)]
    [ValidateNotNullOrEmpty()]
    [String]
    $ResourceName,

    [Parameter(Mandatory = $false)]
    [ValidateSet('User','Group')]
    [String]
    $Type = 'User',

    [Parameter(Mandatory = $false)]
    [ValidateSet('Application','Desktop','GlobalApplicationEntitlement','GlobalEntitlement',
    'URLRedirection')]
    [String]
    $ResourceType = 'Desktop',

    [Parameter(Mandatory = $false)]
    $HvServer = $null
  )
  begin {
    $services = Get-ViewAPIService -hvServer $hvServer
    if ($null -eq $services) {
      Write-Error "Could not retrieve ViewApi services from connection object"
      break
    }
  }
  process {
    $confirmFlag = Get-HVConfirmFlag -keys $PsBoundParameters.Keys
    $AndFilter = @()
    $results = $null
    if ($User) {
      $userInfo = Get-UserInfo -UserName $User
      $AndFilter += Get-HVQueryFilter 'base.loginName' -Eq $userInfo.Name
      $AndFilter += Get-HVQueryFilter 'base.domain' -Eq $userInfo.Domain
    }
    $AndFilter += Get-HVQueryFilter 'base.group' -Eq ($Type -eq 'Group')
    [VMware.Hv.UserEntitlementId[]] $userEntitlements = $null
    if ($ResourceName) {
      $info = $services.PodFederation.PodFederation_get()
      switch($ResourceType) {
        "Desktop" {
          $ResourceObjs = Get-HVPool -PoolName $ResourceName -suppressInfo $true -HvServer $HvServer
          if (! $ResourceObjs) {
            Write-Host "No pool found with given resourceName: " $ResourceName
            return
          }
          $AndFilter += Get-HVQueryFilter 'localData.desktops' -Contains ([VMware.HV.DesktopId[]] $ResourceObjs.Id)
          $filters = Get-HVQueryFilter -And -Filters $AndFilter
          $results = Get-HVQueryResult -EntityType EntitledUserOrGroupLocalSummaryView -Filter $filters -HvServer $HvServer
          if ($results) {
            foreach ($result in $Results) {
              $deleteResources = @()
              for ($i = 0; $i -lt $result.localdata.desktops.length; $i++) {
                if ($ResourceObjs.Id.id -eq $result.localdata.Desktops[$i].id) {
                  $deleteResources += $result.localdata.DesktopUserEntitlements[$i]
                }
              }
              Write-Host $deleteResources.Length " desktopUserEntitlement(s) will be removed for UserOrGroup " $user
              if (!$confirmFlag -OR  $pscmdlet.ShouldProcess($User)) {
                $services.UserEntitlement.UserEntitlement_DeleteUserEntitlements($deleteResources)
              }
            }
          }
        }
        "Application" {
          $eqFilter = Get-HVQueryFilter 'data.name' -Eq $ResourceName
          $ResourceObjs = Get-HVQueryResult -EntityType ApplicationInfo -Filter $eqFilter -HvServer $HvServer
          if (! $ResourceObjs) {
            Write-Host "No Application found with given resourceName: " $ResourceName
            return
          }
          $AndFilter += Get-HVQueryFilter 'localData.applications' -Contains ([VMware.HV.ApplicationId[]] $ResourceObjs.Id)
          $AndFilter = Get-HVQueryFilter -And -Filters $AndFilter
          $results = Get-HVQueryResult -EntityType EntitledUserOrGroupLocalSummaryView -Filter $AndFilter -HvServer $HvServer
          if ($results) {
            foreach ($result in $Results) {
              $userEntitlements = $result.localData.applicationUserEntitlements
              Write-Host $userEntitlements.Length " applicationUserEntitlement(s) will be removed for UserOrGroup " $user
              if (!$confirmFlag -OR  $pscmdlet.ShouldProcess($User)) {
                $services.UserEntitlement.UserEntitlement_DeleteUserEntitlements($userEntitlements)
              }
            }
          }
        }
        "URLRedirection" {
          $UrlRedirectionList = $services.URLRedirection.URLRedirection_List()
          $ResourceObjs = $UrlRedirectionList | Where-Object { $_.urlRedirectionData.displayName -like $ResourceName}
          if (! $ResourceObjs) {
            Write-Host "No URLRedirectionData found with given resourceName: " $ResourceName
            return
          }
          $localFilter = @()
          $localFilter += $AndFilter
          $localFilter +=  (Get-HVQueryFilter 'localData.urlRedirectionSettings' -Contains ([VMware.HV.URLRedirectionId[]]$ResourceObjs.Id))
          $localFilter = Get-HVQueryFilter -And -Filters $localFilter
          $results = Get-HVQueryResult -EntityType EntitledUserOrGroupLocalSummaryView -Filter $localFilter -HvServer $HvServer
          if ("ENABLED" -eq $info.localPodStatus.status) {
            $globalFilter = @()
            $globalFilter += $AndFilter
            $globalFilter += Get-HVQueryFilter 'globalData.urlRedirectionSettings' -Contains ([VMware.HV.URLRedirectionId[]]$ResourceObjs.Id)
            $globalFilter = Get-HVQueryFilter -And -Filters $globalFilter
            $results += Get-HVQueryResult -EntityType EntitledUserOrGroupGlobalSummaryView -Filter $globalFilter -HvServer $HvServer
          }
          if ($results) {
            foreach ($result in $Results) {
              if ($result.GetType().Name -eq 'EntitledUserOrGroupLocalSummaryView') {
                $userEntitlements = $result.localData.urlRedirectionUserEntitlements
                Write-Host $userEntitlements.Length " urlRedirectionUserEntitlement(s) will be removed for UserOrGroup " $user
                if (!$confirmFlag -OR  $pscmdlet.ShouldProcess($User)) {
                  $services.UserEntitlement.UserEntitlement_DeleteUserEntitlements($userEntitlements)
                }
              } else {
                $userEntitlements = $result.globalData.urlRedirectionUserEntitlements
                Write-Host $userEntitlements.Length " urlRedirectionUserEntitlement(s) will be removed for UserOrGroup " $user
                if (!$confirmFlag -OR  $pscmdlet.ShouldProcess($User)) {
                  $services.UserEntitlement.UserEntitlement_DeleteUserEntitlements($userEntitlements)
                }
              }
            }
          }
        }
        "GlobalApplicationEntitlement" {
          if ("ENABLED" -ne $info.localPodStatus.status) {
            Write-Host "Multi-DataCenter-View/CPA is not enabled"
            return
          }
          $eqFilter = Get-HVQueryFilter 'base.displayName' -Eq $ResourceName
          $ResourceObjs = Get-HVQueryResult -EntityType GlobalApplicationEntitlementInfo -Filter $eqFilter -HvServer $HvServer
          if (! $ResourceObjs) {
              Write-Host "No globalApplicationEntitlementInfo found with given resourceName: " $ResourceName
              return
          }
          $AndFilter += Get-HVQueryFilter 'globalData.globalApplicationEntitlements' -Contains ([VMware.Hv.GlobalApplicationEntitlementId[]]$ResourceObjs.Id)
          $AndFilter = Get-HVQueryFilter -And -Filters $AndFilter
          $results = Get-HVQueryResult -EntityType EntitledUserOrGroupGlobalSummaryView -Filter $AndFilter -HvServer $HvServer
          if ($results) {
            foreach ($result in $Results) {
              $userEntitlements = $result.globalData.globalUserApplicationEntitlements
              Write-Host $userEntitlements.Length " GlobalApplicationEntitlement(s) will be removed for UserOrGroup " $user
              if (!$confirmFlag -OR  $pscmdlet.ShouldProcess($User)) {
                $services.UserEntitlement.UserEntitlement_DeleteUserEntitlements($userEntitlements)
              }
            }
          }
        }
        "GlobalEntitlement" {
          if ("ENABLED" -ne $info.localPodStatus.status) {
            Write-Host "Multi-DataCenter-View/CPA is not enabled"
            return
          }
          $eqFilter = Get-HVQueryFilter 'base.displayName' -Eq $ResourceName
          $ResourceObjs = Get-HVQueryResult -EntityType GlobalEntitlementSummaryView -Filter $eqFilter -HvServer $HvServer
          if (! $ResourceObjs) {
              Write-Host "No globalEntitlementSummary found with given resourceName: " $ResourceName
              return
          }
          $AndFilter += Get-HVQueryFilter 'globalData.globalEntitlements' -Contains ([VMware.Hv.GlobalEntitlementId[]]$ResourceObjs.Id)
          $AndFilter = Get-HVQueryFilter -And -Filters $AndFilter
          $results = Get-HVQueryResult -EntityType EntitledUserOrGroupGlobalSummaryView -Filter $AndFilter -HvServer $HvServer
          if ($results) {
            foreach ($result in $Results) {
              $deleteResources = @()
              for ($i = 0; $i -lt $result.globalData.globalEntitlements.length; $i++) {
                if ($ResourceObjs.Id.id -eq $result.globalData.globalEntitlements[$i].id) {
                  $deleteResources += $result.globalData.globalUserEntitlements[$i]
                }
              }
              Write-Host $deleteResources.Length " GlobalEntitlement(s) will be removed for UserOrGroup " $user
              if (!$confirmFlag -OR  $pscmdlet.ShouldProcess($User)) {
                $services.UserEntitlement.UserEntitlement_DeleteUserEntitlements($deleteResources)
              }
            }

          }
        }
      }
    }
    if (! $results) {
      Write-Host "Remove-HVEntitlement: No entitlements found with given search parameters"
      return
    }
  }
  end {
    [System.gc]::collect()
  }
}

function Set-HVMachine {
<#
.Synopsis
   Sets existing virtual Machine(s).

.DESCRIPTION
   This cmdlet allows user to edit Machine configuration by passing key/value pair.
   Allows the machine in to Maintenance mode and vice versa

.PARAMETER MachineName
   The name of the Machine to edit.

.PARAMETER Machine
   Object(s) of the virtual Machine(s) to edit.

.PARAMETER Maintenance
   The virtual machine is in maintenance mode. Users cannot log in or use the virtual machine

PARAMETER Key
   Property names path separated by . (dot) from the root of machine info spec.

.PARAMETER Value
   Property value corresponds to above key name.

.PARAMETER HvServer
   Reference to Horizon View Server to query the virtual machines from. If the value is not passed or null then
   first element from global:DefaultHVServers would be considered in-place of hvServer

.EXAMPLE
   Set-HVMachine -MachineName 'Agent_Praveen' -Maintenance ENTER_MAINTENANCE_MODE
   Moving the machine in to Maintenance mode using machine name

.EXAMPLE
   Get-HVMachine -MachineName 'Agent_Praveen' | Set-HVMachine -Maintenance ENTER_MAINTENANCE_MODE
   Moving the machine in to Maintenance mode using machine object(s)

.EXAMPLE
   $machine = Get-HVMachine -MachineName 'Agent_Praveen'; Set-HVMachine -Machine $machine -Maintenance EXIT_MAINTENANCE_MODE
   Moving the machine in to Maintenance mode using machine object(s)

.OUTPUTS
  None

.NOTES
    Author                      : Praveen Mathamsetty.
    Author email                : pmathamsetty@vmware.com
    Version                     : 1.1

    ===Tested Against Environment====
    Horizon View Server Version : 7.0.2, 7.1.0
    PowerCLI Version            : PowerCLI 6.5, PowerCLI 6.5.1
    PowerShell Version          : 5.0
#>

  [CmdletBinding(
    SupportsShouldProcess = $true,
    ConfirmImpact = 'High'
  )]

  param(

    [Parameter(Mandatory = $true ,ParameterSetName = 'option')]
    [string]
    $MachineName,

    [Parameter(Mandatory = $true, ValueFromPipeline = $true, ParameterSetName = 'pipeline')]
    $Machine,

    [Parameter(Mandatory = $false)]
    [ValidateSet('ENTER_MAINTENANCE_MODE', 'EXIT_MAINTENANCE_MODE')]
    [string]
    $Maintenance,

    [Parameter(Mandatory = $false)]
    [string]$Key,

    [Parameter(Mandatory = $false)]
    $Value,

    [Parameter(Mandatory = $false)]
    [ValidatePattern("^.+?[@\\].+?$")]
    [string]
    $User,

    [Parameter(Mandatory = $false)]
    $HvServer = $null
  )

  begin {
    $services = Get-ViewAPIService -hvServer $hvServer
    if ($null -eq $services) {
      Write-Error "Could not retrieve ViewApi services from connection object"
      break
    }
  }

  process {
    $confirmFlag = Get-HVConfirmFlag -keys $PsBoundParameters.Keys
    $machineList = @{}
    if ($machineName) {
      try {
        $machines = Get-HVMachineSummary -MachineName $machineName -suppressInfo $true -hvServer $hvServer
      } catch {
        Write-Error "Make sure Get-HVMachineSummary advanced function is loaded, $_"
        break
      }
      if ($machines) {
        foreach ($macineObj in $machines) {
          $machineList.add($macineObj.id, $macineObj.base.Name)
        }
      }
      if ($machineList.count -eq 0) {
        Write-Error "Machine $machineName not found - try fqdn"
        [System.gc]::collect()
        return
      }
    } elseif ($PSCmdlet.MyInvocation.ExpectingInput -or $Machine) {
      foreach ($item in $machine) {
        if (($item.GetType().name -eq 'MachineNamesView') -or ($item.GetType().name -eq 'MachineInfo')) {
          $machineList.add($item.id, $item.Base.Name)
        } else {
          Write-Error "In pipeline did not get object of expected type MachineNamesView/MachineInfo"
          [System.gc]::collect()
          return
        }
      }
    }
    $updates = @()
    if ($key -and $value) {
      $updates += Get-MapEntry -key $key -value $value
    } elseif ($key -or $value) {
      Write-Error "Both key:[$key] and value:[$value] needs to be specified"
    }
    if ($User) {
      $userInfo = Get-UserInfo -UserName $User
      $UserOrGroupName = $userInfo.Name
      $Domain = $userInfo.Domain
      $filter1 = Get-HVQueryFilter 'base.name' -Eq $UserOrGroupName
      $filter2 = Get-HVQueryFilter 'base.domain' -Eq $Domain
      $filter3 = Get-HVQueryFilter 'base.group' -Eq $false
      $andFilter = Get-HVQueryFilter -And -Filters @($filter1, $filter2, $filter3)
      $results = Get-HVQueryResult -EntityType ADUserOrGroupSummaryView -Filter $andFilter -HvServer $HvServer
      if ($results.length -ne 1) {
        Write-Host "Unable to find specific user with given search parameters"
        [System.gc]::collect()
        return
      }
      $updates += Get-MapEntry -key 'base.user' -value $results[0].id
    }

    if ($Maintenance) {
      if ($Maintenance -eq 'ENTER_MAINTENANCE_MODE') {
        $updates += Get-MapEntry -key 'managedMachineData.inMaintenanceMode' -value $true
      } else {
        $updates += Get-MapEntry -key 'managedMachineData.inMaintenanceMode' -value $false
      }
    }
    $machine_helper = New-Object VMware.Hv.MachineService
    foreach ($item in $machineList.Keys) {
      Write-Host "Updating the Machine: " $machineList.$item
      if (!$confirmFlag -OR  $pscmdlet.ShouldProcess($machineList.$item)) {
       $machine_helper.Machine_Update($services,$item,$updates)
      }
    }
  }

  end {
    [System.gc]::collect()
  }

}

function New-HVGlobalEntitlement {

 <#
.Synopsis
   Creates a Global Entitlement.

.DESCRIPTION
   Global entitlements are used to route users to their resources across multiple pods.
   These are persisted in a global ldap instance that is replicated across all pods in a linked mode view set.

.PARAMETER DisplayName
   Display Name of Global Entitlement.

.PARAMETER Type
   Specify whether to create desktop/app global entitlement

.PARAMETER Description
   Description of Global Entitlement.

.PARAMETER Scope
   Scope for this global entitlement. Visibility and Placement policies are defined by this value.

.PARAMETER Dedicated
   Specifies whether dedicated/floating resources associated with this global entitlement.

.PARAMETER FromHome
   This value defines the starting location for resource placement and search.
   When true, a pod in the user's home site is used to start the search. When false, the current site is used.

.PARAMETER RequireHomeSite
   This value determines whether we fail if a home site isn't defined for this global entitlement.

.PARAMETER MultipleSessionAutoClean
   This value is used to determine if automatic session clean up is enabled.
   This cannot be enabled when this Global Entitlement is associated with a Desktop that has dedicated user assignment.

.PARAMETER Enabled
   If this Global Entitlement is enabled.

.PARAMETER SupportedDisplayProtocols
   The set of supported display protocols for the global entitlement.

.PARAMETER DefaultDisplayProtocol
   The default display protocol for the global entitlement.

.PARAMETER AllowUsersToChooseProtocol
   Whether the users can choose the protocol used.

.PARAMETER AllowUsersToResetMachines
   Whether users are allowed to reset/restart their machines.

.PARAMETER EnableHTMLAccess
   If set to true, the desktops that are associated with this GlobalEntitlement must also have HTML Access enabled.

.PARAMETER HvServer
   Reference to Horizon View Server. If the value is not passed or null then
   first element from global:DefaultHVServers would be considered in-place of hvServer

.EXAMPLE
   New-HVGlobalEntitlement -DisplayName 'GE_APP' -Type APPLICATION_ENTITLEMENT
   Creates new global application entitlement

.EXAMPLE
   New-HVGlobalEntitlement -DisplayName 'GE_DESKTOP' -Type DESKTOP_ENTITLEMENT
   Creates new global desktop entitlement


.NOTES
    Author                      : Praveen Mathamsetty.
    Author email                : pmathamsetty@vmware.com
    Version                     : 1.1

    ===Tested Against Environment====
    Horizon View Server Version : 7.0.2, 7.1.0
    PowerCLI Version            : PowerCLI 6.5, PowerCLI 6.5.1
    PowerShell Version          : 5.0
#>

[CmdletBinding(
    SupportsShouldProcess = $true,
    ConfirmImpact = 'High'
  )]
  param(
    [Parameter(Mandatory = $true)]
    [ValidateNotNullOrEmpty()]
    [String]
    $DisplayName,

    [Parameter(Mandatory = $true)]
    [ValidateSet('DESKTOP_ENTITLEMENT','APPLICATION_ENTITLEMENT')]
    [String]
    $Type,

    [Parameter(Mandatory = $false)]
    [ValidateNotNullOrEmpty()]
    [String]
    $Description,

    [Parameter(Mandatory = $false)]
    [ValidateSet('LOCAL','SITE','ANY')]
    [String]
    $Scope = "ANY",

    [Parameter(Mandatory = $false)]
    [Boolean]
    $Dedicated,

    [Parameter(Mandatory = $false)]
    [Boolean]
    $FromHome,

    [Parameter(Mandatory = $false)]
    [Boolean]
    $RequireHomeSite,

    [Parameter(Mandatory = $false)]
    [Boolean]
    $MultipleSessionAutoClean,

    [Parameter(Mandatory = $false)]
    [Boolean]
    $Enabled,

    [Parameter(Mandatory = $false)]
    [ValidateSet('RDP', 'PCOIP', 'BLAST')]
    [String[]]
    $SupportedDisplayProtocols = @("PCOIP","BLAST"),

    [Parameter(Mandatory = $false)]
    [ValidateSet("PCOIP",'RDP',"BLAST")]
    [String]
    $DefaultDisplayProtocol =  'PCOIP',

    [Parameter(Mandatory = $false)]
    [Boolean]
    $AllowUsersToChooseProtocol = $true,

    [Parameter(Mandatory = $false)]
    [Boolean]
    $AllowUsersToResetMachines = $false,

    [Parameter(Mandatory = $false)]
    [Boolean]
    $EnableHTMLAccess = $false,

    [Parameter(Mandatory = $false)]
    $HvServer = $null
  )
  begin {
    $services = Get-ViewAPIService -hvServer $hvServer
    if ($null -eq $services) {
      Write-Error "Could not retrieve ViewApi services from connection object"
      break
    }
  }
  process {
    $info = $services.PodFederation.PodFederation_get()
    if ("ENABLED" -ne $info.localPodStatus.status) {
      Write-Host "Multi-DataCenter-View/CPA is not enabled"
      return
    }
    $confirmFlag = Get-HVConfirmFlag -keys $PsBoundParameters.Keys
    if ($Type -eq 'DESKTOP_ENTITLEMENT') {
     $GeService = New-Object VMware.HV.GlobalEntitlementService
     $geBaseHelper = $GeService.getGlobalEntitlementBaseHelper()
     $geBase = $geBaseHelper.getDataObject()
     $geBase.Dedicated = $dedicated
     $geBase.AllowUsersToResetMachines = $AllowUsersToResetMachines
    } else {
     $GeService = New-Object VMware.Hv.GlobalApplicationEntitlementService
     $geBaseHelper = $GeService.getGlobalApplicationEntitlementBaseHelper()
     $geBase = $geBaseHelper.getDataObject()
    }
    $geBase.DisplayName = $displayName
    if ($description) {
      $geBaseHelper.setDescription($Description)
    }
    $geBase.Scope = $Scope
    $geBase.FromHome = $fromHome
    $geBase.RequireHomeSite = $requireHomeSite
    $geBase.MultipleSessionAutoClean = $multipleSessionAutoClean
    $geBase.Enabled = $enabled
    $geBase.DefaultDisplayProtocol = $defaultDisplayProtocol
    $geBase.AllowUsersToChooseProtocol = $AllowUsersToChooseProtocol
    $geBase.EnableHTMLAccess = $enableHTMLAccess
    $geBase.SupportedDisplayProtocols = $supportedDisplayProtocols
    Write-Host "Creating new global entitlement with DisplayName: " $DisplayName
    if (!$confirmFlag -OR  $pscmdlet.ShouldProcess($displayName)) {
      if ($type -eq 'DESKTOP_ENTITLEMENT') {
        $GeService.GlobalEntitlement_Create($services, $geBase)
      } else {
        $GeService.GlobalApplicationEntitlement_Create($services, $geBase)
      }
    }
  }
  end {
    [System.gc]::collect()
  }

}


function Find-HVGlobalEntitlement {
  [CmdletBinding()]
  param(
    [Parameter(Mandatory = $true)]
    $Param,
    [Parameter(Mandatory = $true)]
    [String]
    $Type
  )

  # This translates the function arguments into the View API properties that must be queried
  $GeSelectors = @{
    'displayName' = 'base.displayName';
    'description' = 'base.description';
  }

  $params = $Param

  $query_service_helper = New-Object VMware.Hv.QueryServiceService
  $query = New-Object VMware.Hv.QueryDefinition

  $wildCard = $false
  #Only supports wild card '*'
  if ($params['displayName'] -and $params['displayName'].contains('*')) {
    $wildcard = $true
  }

  # build the query values
  $query.queryEntityType = $Type
  if (! $wildcard) {
    [VMware.Hv.queryfilter[]]$filterSet = @()
    foreach ($setting in $GeSelectors.Keys) {
      if ($null -ne $params[$setting]) {
        $equalsFilter = New-Object VMware.Hv.QueryFilterEquals
        $equalsFilter.memberName = $GeSelectors[$setting]
        $equalsFilter.value = $params[$setting]
        $filterSet += $equalsFilter
      }
    }
    if ($filterSet.Count -gt 0) {
      $andFilter = New-Object VMware.Hv.QueryFilterAnd
      $andFilter.Filters = $filterset
      $query.Filter = $andFilter
    }
    $queryResults = $query_service_helper.QueryService_Query($services,$query)
    $GeList = $queryResults.results
  }
  if ($wildcard -or [string]::IsNullOrEmpty($GeList)) {
    $query.Filter = $null
    $queryResults = $query_service_helper.QueryService_Query($services,$query)
    $strFilterSet = @()
    foreach ($setting in $GeSelectors.Keys) {
      if ($null -ne $params[$setting]) {
        if ($wildcard -and ($setting -eq 'displayName') ) {
          $strFilterSet += '($_.' + $GeSelectors[$setting] + ' -like "' + $params[$setting] + '")'
        } else {
          $strFilterSet += '($_.' + $GeSelectors[$setting] + ' -eq "' + $params[$setting] + '")'
        }
      }
    }
    $whereClause =  [string]::Join(' -and ', $strFilterSet)
    $scriptBlock = [Scriptblock]::Create($whereClause)
    $GeList = $queryResults.results | Where-Object $scriptBlock
  }
  Return $GeList
}

function Get-HVGlobalEntitlement {

 <#
.Synopsis
  Gets Global Entitlement(s) with given search parameters.

.DESCRIPTION
   Queries and returns global entitlement(s) and global application entitlement(s).
   Global entitlements are used to route users to their resources across multiple pods.

.PARAMETER DisplayName
   Display Name of Global Entitlement.

.PARAMETER Description
   Description of Global Entitlement.

.PARAMETER SuppressInfo
    Suppress text info, when no global entitlement(s) found with given search parameters

.PARAMETER HvServer
   Reference to Horizon View Server. If the value is not passed or null then
   first element from global:DefaultHVServers would be considered in-place of hvServer

.EXAMPLE
   Get-HVGlobalEntitlement -DisplayName 'GEAPP'
   Retrieves global application/desktop entitlement(s) with displayName 'GEAPP'


.NOTES
    Author                      : Praveen Mathamsetty.
    Author email                : pmathamsetty@vmware.com
    Version                     : 1.1

    ===Tested Against Environment====
    Horizon View Server Version : 7.0.2, 7.1.0
    PowerCLI Version            : PowerCLI 6.5, PowerCLI 6.5.1
    PowerShell Version          : 5.0
#>

[CmdletBinding()]
  param(
    [Parameter(Mandatory = $false)]
    [ValidateNotNullOrEmpty()]
    [String]
    $DisplayName,

    [Parameter(Mandatory = $false)]
    [ValidateNotNullOrEmpty()]
    [String]
    $Description,

    [Parameter(Mandatory = $false)]
    [boolean]
    $SuppressInfo = $false,

    [Parameter(Mandatory = $false)]
    $HvServer = $null
  )
  begin {
    $services = Get-ViewAPIService -hvServer $hvServer
    if ($null -eq $services) {
      Write-Error "Could not retrieve ViewApi services from connection object"
      break
    }
  }
  process {
    $info = $services.PodFederation.PodFederation_get()
    if ("ENABLED" -ne $info.localPodStatus.status) {
      Write-Host "Multi-DataCenter-View/CPA is not enabled"
      return
    }
    $result = @()
    $result += Find-HVGlobalEntitlement -Param $psboundparameters -Type 'GlobalEntitlementSummaryView'
    $result += Find-HVGlobalEntitlement -Param $psboundparameters -Type 'GlobalApplicationEntitlementInfo'
    if (!$result -and !$SuppressInfo) {
      Write-Host "Get-HVGlobalEntitlement: No global entitlement Found with given search parameters"
    }
    return $result
  }
  end {
    [System.gc]::collect()
  }
}


function Set-HVGlobalEntitlement {
<#
.SYNOPSIS
    Sets the existing pool properties.

.DESCRIPTION
    This cmdlet allows user to edit global entitlements.

.PARAMETER DisplayName
   Display Name of Global Entitlement.

.PARAMETER Description
   Description of Global Entitlement.

.PARAMETER EnableHTMLAccess
   If set to true, the desktops that are associated with this GlobalEntitlement must also have HTML Access enabled.

.PARAMETER Key
    Property names path separated by . (dot) from the root of desktop spec.

.PARAMETER Value
    Property value corresponds to above key name.

.PARAMETER HvServer
    View API service object of Connect-HVServer cmdlet.

.PARAMETER Spec
    Path of the JSON specification file containing key/value pair.

.EXAMPLE
    Set-HVGlobalEntitlement -DisplayName 'MyGlobalEntitlement' -Spec 'C:\Edit-HVPool\EditPool.json' -Confirm:$false
    Updates pool configuration by using json file

.EXAMPLE
    Set-HVGlobalEntitlement -DisplayName 'MyGlobalEntitlement' -Key 'base.description' -Value 'update description'
    Updates pool configuration with given parameters key and value

.EXAMPLE
    Set-HVGlobalEntitlement -DisplayName 'MyGlobalEntitlement' -enableHTMLAccess $true
    Set Allow HTML Access on a global entitlement.  Note that it must also be enabled on the Pool and as of 7.3.0 Allow User to Choose Protocol must be enabled (which is unfortunately read-only)

.EXAMPLE
    Get-HVGlobalEntitlement | Set-HVGlobalEntitlement -Disable
    Disable all global entitlements

.OUTPUTS
    None

.NOTES
    Author                      : Mark Elvers
    Author email                : mark.elvers@tunbury.org
    Version                     : 1.0

    ===Tested Against Environment====
    Horizon View Server Version : 7.3.0, 7.3.1
    PowerCLI Version            : PowerCLI 6.5.1
    PowerShell Version          : 5.0
#>

  [CmdletBinding(
    SupportsShouldProcess = $true,
    ConfirmImpact = 'High'
  )]

  param(
    [Parameter(Mandatory = $true,ParameterSetName = 'option')]
    [string] $displayName,

    [Parameter(ValueFromPipeline = $true,ParameterSetName = 'pipeline')]
    $GlobalEntitlements,

    [Parameter(Mandatory = $false)]
    [string]$Key,

    [Parameter(Mandatory = $false)]
    $Value,

    [Parameter(Mandatory = $false)]
    [string]$Spec,

    [Parameter(Mandatory = $false)]
    [switch]$Enable,

    [Parameter(Mandatory = $false)]
    [switch]$Disable,

    [Parameter(Mandatory = $false)]
    [boolean]$enableHTMLAccess,

    [Parameter(Mandatory = $false)]
    $HvServer = $null
  )

  begin {
    $services = Get-ViewAPIService -hvServer $hvServer
    if ($null -eq $services) {
      Write-Error "Could not retrieve ViewApi services from connection object"
      break
    }
  }

  process {
    $info = $services.PodFederation.PodFederation_get()
    if ("ENABLED" -ne $info.localPodStatus.status) {
      Write-Host "Multi-DataCenter-View/CPA is not enabled"
      return
    }

    $confirmFlag = Get-HVConfirmFlag -keys $PsBoundParameters.Keys
    $geList = @{}
    if ($displayName) {
      try {
        $ge = Get-HVGlobalEntitlement -displayName $displayName -suppressInfo $true -hvServer $hvServer
      } catch {
        Write-Error "Make sure Get-HVGlobalEntitlement advanced function is loaded, $_"
        break
      }
      if ($ge) {
   	   $geList.add($ge.id, $ge.base.DisplayName)
      } else {
        Write-Error "No globalentitlement found with name: [$displayName]"
        break
      }
    } elseif ($PSCmdlet.MyInvocation.ExpectingInput -or $GlobalEntitlements) {
      foreach ($item in $GlobalEntitlements) {
        if ($item.GetType().name -eq 'GlobalEntitlementSummaryView') {
          $geList.add($item.id, $item.Base.DisplayName)
        } else {
          Write-Error "In pipeline did not get object of expected type GlobalEntitlementSummaryView"
          [System.gc]::collect()
          return
        }
      }
    }

    $updates = @()
    if ($key -and $value) {
      $updates += Get-MapEntry -key $key -value $value
    } elseif ($key -or $value) {
      Write-Error "Both key:[$key] and value:[$value] needs to be specified"
    }
    if ($spec) {
      try {
        $specObject = Get-JsonObject -specFile $spec
      } catch {
        Write-Error "Json file exception, $_"
        return
      }
      foreach ($member in ($specObject.PSObject.Members | Where-Object { $_.MemberType -eq 'NoteProperty' })) {
        $updates += Get-MapEntry -key $member.name -value $member.value
      }
    }

    if ($Enable) {
      $updates += Get-MapEntry -key 'base.enabled' -value $true
    }
    elseif ($Disable) {
      $updates += Get-MapEntry -key 'base.enabled' -value $false
    }

    if ($PSBoundParameters.ContainsKey("enableHTMLAccess")) {
    	$updates += Get-MapEntry -key 'base.enableHTMLAccess' -value $enableHTMLAccess
    }

    $ge_helper = New-Object VMware.HV.GlobalEntitlementService
    foreach ($item in $geList.Keys) {
      Write-Host "Updating the Entitlement: " $geList.$item
      if (!$confirmFlag -OR  $pscmdlet.ShouldProcess($geList.$item)) {
       $ge_helper.GlobalEntitlement_Update($services, $item, $updates)
      }
    }
  }

  end {
    [System.gc]::collect()
  }
}


function Remove-HVGlobalEntitlement {

 <#
.Synopsis
  Deletes a Global Entitlement.

.DESCRIPTION
   Deletes global entitlement(s) and global application entitlement(s).
   Optionally, user can pipe the global entitlement(s) as input to this function.

.PARAMETER DisplayName
   Display Name of Global Entitlement.

.PARAMETER HvServer
   Reference to Horizon View Server. If the value is not passed or null then
   first element from global:DefaultHVServers would be considered inplace of hvServer

.EXAMPLE
   Remove-HVGlobalEntitlement -DisplayName 'GE_APP'
   Deletes global application/desktop entitlement with displayName 'GE_APP'

.EXAMPLE
   Get-HVGlobalEntitlement -DisplayName 'GE_*' | Remove-HVGlobalEntitlement
   Deletes global application/desktop entitlement(s), if displayName matches with 'GE_*'


.NOTES
    Author                      : Praveen Mathamsetty.
    Author email                : pmathamsetty@vmware.com
    Version                     : 1.1

    ===Tested Against Environment====
    Horizon View Server Version : 7.0.2, 7.1.0
    PowerCLI Version            : PowerCLI 6.5, PowerCLI 6.5.1
    PowerShell Version          : 5.0
#>

[CmdletBinding(
    SupportsShouldProcess = $true,
    ConfirmImpact = 'High'
  )]
  param(
    [Parameter(Mandatory = $true, ParameterSetName = 'Default')]
    [ValidateNotNullOrEmpty()]
    [String]
    $DisplayName,

    [Parameter(Mandatory = $true, ValueFromPipeline = $true, ParameterSetName = 'pipeline')]
    $GlobalEntitlement,

    [Parameter(Mandatory = $false)]
    $HvServer = $null
  )
  begin {
    $services = Get-ViewAPIService -hvServer $hvServer
    if ($null -eq $services) {
      Write-Error "Could not retrieve ViewApi services from connection object"
      break
    }
  }
  process {
    $info = $services.PodFederation.PodFederation_get()
    if ("ENABLED" -ne $info.localPodStatus.status) {
      Write-Host "Multi-DataCenter-View/CPA is not enabled"
      return
    }
    $confirmFlag = Get-HVConfirmFlag -keys $PsBoundParameters.Keys
    $GeList = @()
    if ($DisplayName) {
      try {
        $GeList = Get-HVGlobalEntitlement -DisplayName $DisplayName -suppressInfo $true -hvServer $hvServer
      } catch {
        Write-Error "Make sure Get-HVGlobalEntitlement advanced function is loaded, $_"
        break
      }
    } elseif ($PSCmdlet.MyInvocation.ExpectingInput -or $GlobalEntitlement) {
      foreach ($item in $GlobalEntitlement) {
        if (($item.GetType().name -ne 'GlobalEntitlementSummaryView') -and ($item.GetType().name -ne 'GlobalApplicationEntitlementInfo')) {
          Write-Error "In pipeline did not get object of expected type GlobalApplicationEntitlementInfo/GlobalEntitlementSummaryView"
          [System.gc]::collect()
          return
        }
        $GeList += ,$item
      }
    }
    foreach ($item in  $GeList) {
      Write-Host "Deleting global entitlement with DisplayName: " $item.base.displayName
      if (!$confirmFlag -OR  $pscmdlet.ShouldProcess($item.base.displayName)) {
        if ($item.GetType().Name -eq 'GlobalEntitlementSummaryView') {
          $services.GlobalEntitlement.GlobalEntitlement_Delete($item.id)
        } else {
          $services.GlobalApplicationEntitlement.GlobalApplicationEntitlement_Delete($item.id)
        }
      }
    }
  }
  end {
    [System.gc]::collect()
  }

}

function Get-HVGlobalSession {
<#
.SYNOPSIS
Provides a list with all Global sessions in a Cloud Pod Architecture

.DESCRIPTION
The get-hvglobalsession gets all local session by using view API service object(hvServer) of Connect-HVServer cmdlet.

.PARAMETER HvServer
    View API service object of Connect-HVServer cmdlet.

.EXAMPLE
    Get-hvglobalsession
    Gets all global sessions

.NOTES
    Author                      : Wouter Kursten.
    Author email                : wouter@retouw.nl
    Version                     : 1.0

    ===Tested Against Environment====
    Horizon View Server Version : 7.0.2, 7.1.0, 7.3.2
    PowerCLI Version            : PowerCLI 6.5, PowerCLI 6.5.1
    PowerShell Version          : 5.0

#>
[CmdletBinding()]

param(
    [Parameter(Mandatory = $false)]
    $HvServer = $null
)

$services = Get-ViewAPIService -HvServer $HvServer
if ($null -eq $services) {
  Write-Error "Could not retrieve ViewApi services from connection object."
  break
}

$query_service_helper = New-Object VMware.Hv.GlobalSessionQueryServiceService
$query=new-object vmware.hv.GlobalSessionQueryServiceQuerySpec

$SessionList = @()
foreach ($pod in $services.Pod.Pod_List()) {
  $query.pod=$pod.id
  $queryResults = $query_service_helper.GlobalSessionQueryService_QueryWithSpec($services, $query)
  $GetNext = $false
  do {
    if ($GetNext) { $queryResults = $query_service_helper.GlobalSessionQueryService_GetNext($services, $queryResults.id) }
    $SessionList += $queryResults.results
    $GetNext = $true
  } while ($queryResults.remainingCount -gt 0)
    $query_service_helper.GlobalSessionQueryService_Delete($services, $queryresults.id)

}
return $sessionlist
}

function Set-HVApplicationIcon {
<#
.SYNOPSIS
   Used to create/update an icon association for a given application.

.DESCRIPTION
   This function is used to create an application icon and associate it with the given application. If the specified icon already exists in the LDAP, it will just updates the icon association to the application. Any of the existing customized icon association to the given application will be overwritten.

.PARAMETER ApplicationName
   Name of the application to which the association to be made.

.PARAMETER IconPath
   Path of the icon.

.PARAMETER HvServer
   View API service object of Connect-HVServer cmdlet.

.EXAMPLE
   Creating the icon I1 and associating with application A1. Same command is used for update icon also.
   Set-HVApplicationIcon -ApplicationName A1 -IconPath C:\I1.ico -HvServer $hvServer

.OUTPUTS
   None

.NOTES
    Author                      : Paramesh Oddepally.
    Author email                : poddepally@vmware.com
    Version                     : 1.1

    ===Tested Against Environment====
    Horizon View Server Version : 7.1
    PowerCLI Version            : PowerCLI 6.5.1
    PowerShell Version          : 5.0
#>

  [CmdletBinding(
    SupportsShouldProcess = $true,
    ConfirmImpact = 'High'
  )]

  param(
   [Parameter(Mandatory = $true)]
   [string] $ApplicationName,

   [Parameter(Mandatory = $true)]
   $IconPath,

   [Parameter(Mandatory = $false)]
   $HvServer = $null
  )

  begin {
    $services = Get-ViewAPIService -HvServer $HvServer
    if ($null -eq $services) {
      Write-Error "Could not retrieve ViewApi services from connection object."
      break
    }
    Add-Type -AssemblyName System.Drawing
  }

  process {
	if (!(Test-Path $IconPath)) {
      Write-Error "File:[$IconPath] does not exist."
      break
    }

    if ([IO.Path]::GetExtension($IconPath) -ne '.png') {
      Write-Error "Unsupported file format:[$IconPath]. Only PNG image files are supported."
      break
    }

    try {
      $appInfo = Get-HVQueryResult -EntityType ApplicationInfo -Filter (Get-HVQueryFilter data.name -Eq $ApplicationName) -HvServer $HvServer
    } catch {
      # EntityNotFound, InsufficientPermission, InvalidArgument, InvalidType, UnexpectedFault
      Write-Error "Error in querying the ApplicationInfo for Application:[$ApplicationName] $_"
      break
    }

    if ($null -eq $appInfo) {
      Write-Error "No application found with specified name:[$ApplicationName]."
      break
    }

    $spec = New-Object VMware.Hv.ApplicationIconSpec
    $base = New-Object VMware.Hv.ApplicationIconBase

    try {
      $fileHash = Get-FileHash -Path $IconPath -Algorithm MD5
      $base.IconHash = $fileHash.Hash
      $base.Data = (Get-Content $iconPath -Encoding byte)
      $bitMap = [System.Drawing.Bitmap]::FromFile($iconPath)
      $base.Width = $bitMap.Width
      $base.Height = $bitMap.Height
      $base.IconSource = "broker"
      $base.Applications = @($appInfo.Id)
      $spec.ExecutionData = $base
    } catch {
      Write-Error "Error in reading the icon parameters: $_"
      break
    }

    if ($base.Height -gt 256 -or $base.Width -gt 256) {
      Write-Error "Invalid image resolution. Maximum resolution for an icon should be 256*256."
      break
    }

    If ($Force -or $PSCmdlet.ShouldProcess($ApplicationName)) {
      $ApplicationIconHelper = New-Object VMware.Hv.ApplicationIconService
      try {
        $ApplicationIconId = $ApplicationIconHelper.ApplicationIcon_CreateAndAssociate($services, $spec)
      } catch {
          if ($_.Exception.InnerException.MethodFault.GetType().name.Equals('EntityAlreadyExists')) {
            # This icon is already part of LDAP and associated with some other application(s).
            # In this case, call updateAssociations
            $applicationIconId = $_.Exception.InnerException.MethodFault.Id
            Write-Host "Some application(s) already have an association for the specified icon."
            $ApplicationIconHelper.ApplicationIcon_UpdateAssociations($services, $applicationIconId, @($appInfo.Id))
          } else {
          	Write-Host "Error in associating customized icon for Application:[$ApplicationName] $_"
          	break
	   }
      }
      Write-Host "Successfully associated customized icon for Application:[$ApplicationName]."
    }
  }

  end {
    [System.gc]::collect()
  }
}

Function Remove-HVApplicationIcon {
<#
.SYNOPSIS
   Used to remove a customized icon association for a given application.

.DESCRIPTION
   This function is used to remove an application association to the given application. It will never remove the RDS system icons. If application doesnot have any customized icon, an error will be thrown.

.PARAMETER ApplicationName
   Name of the application to which customized icon needs to be removed.

.PARAMETER HvServer
   View API service object of Connect-HVServer cmdlet.

.EXAMPLE
   Removing the icon for an application A1.
   Remove-HVApplicationIcon -ApplicationName A1 -HvServer $hvServer

.OUTPUTS
   None

.NOTES
    Author                      : Paramesh Oddepally.
    Author email                : poddepally@vmware.com
    Version                     : 1.1

    ===Tested Against Environment====
    Horizon View Server Version : 7.1
    PowerCLI Version            : PowerCLI 6.5.1
    PowerShell Version          : 5.0
#>

  [CmdletBinding(
    SupportsShouldProcess = $true,
    ConfirmImpact = 'High'
  )]
  param(
    [Parameter(Mandatory = $true)]
    [string] $ApplicationName,

   [Parameter(Mandatory = $false)]
   $HvServer = $null
  )

  begin {
    $services = Get-ViewAPIService -HvServer $HvServer
    if ($null -eq $services) {
      Write-Error "Could not retrieve ViewApi services from connection object."
      break
    }
  }

  process {
    try {
      $appInfo = Get-HVQueryResult -EntityType ApplicationInfo -Filter (Get-HVQueryFilter data.name -Eq $ApplicationName) -HvServer $HvServer
    } catch {
        # EntityNotFound, InsufficientPermission, InvalidArgument, InvalidType, UnexpectedFault
        Write-Error "Error in querying the ApplicationInfo for Application:[$ApplicationName] $_"
        break
    }

    if ($null -eq $appInfo) {
      Write-Error "No application found with specified name:[$ApplicationName]"
      break
    }

    [VMware.Hv.ApplicationIconId[]] $icons = $appInfo.Icons
    [VMware.Hv.ApplicationIconId] $brokerIcon = $null
    $ApplicationIconHelper = New-Object VMware.Hv.ApplicationIconService
    Foreach ($icon in $icons) {
      $applicationIconInfo = $ApplicationIconHelper.ApplicationIcon_Get($services, $icon)
      if ($applicationIconInfo.Base.IconSource -eq "broker") {
          $brokerIcon = $icon
      }
    }

    if ($null -eq $brokerIcon) {
       Write-Error "There is no customized icon for the Application:[$ApplicationName]."
       break
    }

    if ($Force -or $PSCmdlet.ShouldProcess($ApplicationName)) {

      try {
        $ApplicationIconHelper.ApplicationIcon_RemoveAssociations($services, $brokerIcon, @($appInfo.Id))
      } catch {
        Write-Error "Error in removing the customized icon association for Application:[$ApplicationName] $_ "
        break
      }
      Write-Host "Successfully removed customized icon association for Application:[$ApplicationName]."

    }
  }

  end {
    [System.gc]::collect()
  }
}

function Get-HVGlobalSettings {
<#
.Synopsis
   Gets a list of Global Settings

.DESCRIPTION
   Queries and returns the Global Settings for the pod of the specified HVServer.

.PARAMETER HvServer
    Reference to Horizon View Server to query the virtual machines from. If the value is not passed or null then
    first element from global:DefaultHVServers would be considered inplace of hvServer

.EXAMPLE
   Get-HVGlobalSettings

.OUTPUTS
   Returns list of object type VMware.Hv.GlobalSettingsInfo

.NOTES
    Author                      : Matt Frey.
    Author email                : mfrey@vmware.com
    Version                     : 1.0

    ===Tested Against Environment====
    Horizon View Server Version : 7.1
    PowerCLI Version            : PowerCLI 6.5.1
    PowerShell Version          : 5.0
#>

  [CmdletBinding()]

  param(
    [Parameter(Mandatory = $false)]
    $HvServer = $null
  )

  begin {
    $services = Get-ViewAPIService -hvServer $hvServer

    if ($null -eq $services) {
      Write-Error "Could not retrieve ViewApi services from connection object"
      break
    }
  }

  process {

    $globalSettings = $services.GlobalSettings.GlobalSettings_Get()

  }

  end {

    Return $globalSettings

  }
}

function Set-HVGlobalSettings {
<#
.SYNOPSIS
    Sets the Global Settings of the Connection Server Pod

.DESCRIPTION
    This cmdlet allows user to set Global Settings by passing key/value pair or by passing specific parameters. Optionally, user can pass a JSON spec file.

.PARAMETER Key
    Property names path separated by . (dot) from the root of global settings spec.

.PARAMETER Value
    Property value corresponds to above key name.

.PARAMETER HvServer
    View API service object of Connect-HVServer cmdlet.

.PARAMETER Spec
    Path of the JSON specification file containing key/value pair.

.PARAMETER clientMaxSessionTimePolicy
    Client max session lifetime policy.
    "TIMEOUT_AFTER" Indicates that the client session times out after a configurable session length (in minutes)
    "NEVER" Indicates no absolute client session length (sessions only end due to inactivity)

.PARAMETER clientMaxSessionTimeMinutes
    Determines how long a user can keep a session open after logging in to View Connection Server. The value is set in minutes. When a session times out, the session is terminated and the View client is disconnected from the resource.
    Default value is 600.
    Minimum value is 5.
    Maximum value is 600.
    This property is required if clientMaxSessionTimePolicy is set to "TIMEOUT_AFTER"

.PARAMETER clientIdleSessionTimeoutPolicy
    Specifies the policy for the maximum time that a that a user can be idle before the broker takes measure to protect the session.
    "TIMEOUT_AFTER" Indicates that the user session can be idle for a configurable max time (in minutes) before the broker takes measure to protect the session.
    "NEVER" Indicates that the client session is never locked.

.PARAMETER clientIdleSessionTimeoutMinutes
    Determines how long a that a user can be idle before the broker takes measure to protect the session. The value is set in minutes.
    Default value is 15
    This property is required if -clientIdleSessionTimeoutPolicy is set to "TIMEOUT_AFTER"

.PARAMETER clientSessionTimeoutMinutes
    Determines the maximum length of time that a Broker session will be kept active if there is no traffic between a client and the Broker. The value is set in minutes.
    Default value is 1200
    Minimum value is 5

.PARAMETER desktopSSOTimeoutPolicy
    The single sign on setting for when a user connects to View Connection Server.
    "DISABLE_AFTER" SSO is disabled the specified number of minutes after a user connects to View Connection Server.
    "DISABLED" Single sign on is always disabled.
    "ALWAYS_ENABLED" Single sign on is always enabled.

.PARAMETER desktopSSOTimeoutMinutes
    SSO is disabled the specified number of minutes after a user connects to View Connection Server.
    Minimum value is 1
    Maximum value is 999

.PARAMETER applicationSSOTimeoutPolicy
    The single sign on timeout policy for application sessions.
    "DISABLE_AFTER" SSO is disabled the specified number of minutes after a user connects to View Connection Server.
    "DISABLED" Single sign on is always disabled.
    "ALWAYS_ENABLED" Single sign on is always enabled.

.PARAMETER applicationSSOTimeoutMinutes
    SSO is disabled the specified number of minutes after a user connects to View Connection Server.
    Minimum value is 1
    Maximum value is 999

.PARAMETER viewAPISessionTimeoutMinutes
    Determines how long (in minutes) an idle View API session continues before the session times out. Setting the View API session timeout to a high number of minutes increases the risk of unauthorized use of View API. Use caution when you allow an idle session to persist a long time.
    Default value is 10
    Minimum value is 1
    Maximum value is 4320

.PARAMETER preLoginMessage
    Displays a disclaimer or another message to View Client users when they log in. No message will be displayed if this is null.

.PARAMETER displayWarningBeforeForcedLogoff
    Displays a warning message when users are forced to log off because a scheduled or immediate update such as a machine-refresh operation is about to start.
    $TRUE or $FALSE

.PARAMETER forcedLogoffMinutes
    The number of minutes to wait after the warning is displayed and before logging off the user.
    Default value is 5
    Minimum value is 1
    Maximum value is 999999
    This property is required if displayWarningBeforeForcedLogoff is $true

.PARAMETER forcedLogoffMessage
    The warning to be displayed before logging off the user.

.PARAMETER enableServerInSingleUserMode
    Permits certain RDSServer operating systems to be used for non-RDS Desktops.

.PARAMETER storeCALOnBroker
    Used for configuring whether or not to store the RDS Per Device CAL on Broker.
    $TRUE or $FALSE

.PARAMETER storeCALOnClient
    Used for configuring whether or not to store the RDS Per Device CAL on client devices. This value can be true only if the storeCALOnBroker is true.
    $TRUE or $FALSE

.PARAMETER reauthSecureTunnelAfterInterruption
    Reauthenticate secure tunnel connections after network interruption Determines if user credentials must be reauthenticated after a network interruption when View clients use secure tunnel connections to View resources. When you select this setting, if a secure tunnel connection ends during a session, View Client requires the user to reauthenticate before reconnecting. This setting offers increased security. For example, if a laptop is stolen and moved to a different network, the user cannot automatically gain access to the remote resource because the network connection was temporarily interrupted. When this setting is not selected, the client reconnects to the resource without requiring the user to reauthenticate. This setting has no effect when you use direct connection.

.PARAMETER messageSecurityMode
    Determines if signing and verification of the JMS messages passed between View Manager components takes place.
    "DISABLED" Message security mode is disabled.
    "MIXED" Message security mode is enabled but not enforced. You can use this mode to detect components in your View environment that predate View Manager 3.0. The log files generated by View Connection Server contain references to these components.
    "ENABLED" Message security mode is enabled. Unsigned messages are rejected by View components. Message security mode is enabled by default. Note: View components that predate View Manager 3.0 are not allowed to communicate with other View components.
    "ENHANCED" Message Security mode is Enhanced. Message signing and validation is performed based on the current Security Level and desktop Message Security mode.

.PARAMETER enableIPSecForSecurityServerPairing
    Determines whether to use Internet Protocol Security (IPSec) for connections between security servers and View Connection Server instances. By default, secure connections (using IPSec) for security server connections is enabled.
    $TRUE or $FALSE

.EXAMPLE
    Set-HVGlobalSettings 'ManualPool' -Spec 'C:\Set-HVGlobalSettings\Set-GlobalSettings.json'

.EXAMPLE
    Set-HVGlobalSettings -Key 'generalData.clientMaxSessionTimePolicy' -Value 'NEVER'

.EXAMPLE
    Set-HVGlobalSettings -clientMaxSessionTimePolicy "TIMEOUT_AFTER" -clientMaxSessionTimeMinutes 1200

.OUTPUTS
    None

.NOTES
    Author                      : Matt Frey.
    Author email                : mfrey@vmware.com
    Version                     : 1.0

    ===Tested Against Environment====
    Horizon View Server Version : 7.1
    PowerCLI Version            : PowerCLI 6.5.1
    PowerShell Version          : 5.0
#>

  [CmdletBinding(
    SupportsShouldProcess = $true,
    ConfirmImpact = 'High'
  )]

  param(
    [Parameter(Mandatory = $false)]
    [string]$Key,

    [Parameter(Mandatory = $false)]
    $Value,

    [Parameter(Mandatory = $false)]
    [string]$Spec,

    [Parameter(Mandatory = $false)]
    [ValidateSet('TIMEOUT_AFTER','NEVER')]
    [string]$clientMaxSessionTimePolicy,

    [Parameter(Mandatory = $false)]
    [ValidateRange(5,600)]
    [Int]$clientMaxSessionTimeMinutes,

    [Parameter(Mandatory = $false)]
    [ValidateSet('TIMEOUT_AFTER','NEVER')]
    [string]$clientIdleSessionTimeoutPolicy,

    [Parameter(Mandatory = $false)]
    [Int]$clientIdleSessionTimeoutMinutes,

    [Parameter(Mandatory = $false)]
    [Int]$clientSessionTimeoutMinutes,

    [Parameter(Mandatory = $false)]
    [ValidateSet('DISABLE_AFTER','DISABLED','ALWAYS_ENABLED')]
    [string]$desktopSSOTimeoutPolicy,

    [Parameter(Mandatory = $false)]
    [ValidateRange(1,999)]
    [Int]$desktopSSOTimeoutMinutes,

    [Parameter(Mandatory = $false)]
    [ValidateSet('DISABLE_AFTER','DISABLED','ALWAYS_ENABLED')]
    [string]$applicationSSOTimeoutPolicy,

    [Parameter(Mandatory = $false)]
    [ValidateRange(1,999)]
    [Int]$applicationSSOTimeoutMinutes,

    [Parameter(Mandatory = $false)]
    [ValidateRange(1,4320)]
    [Int]$viewAPISessionTimeoutMinutes,

    [Parameter(Mandatory = $false)]
    [string]$preLoginMessage,

    [Parameter(Mandatory = $false)]
    [boolean]$displayWarningBeforeForcedLogoff,

    [Parameter(Mandatory = $false)]
    [ValidateRange(1,999999)]
    [Int]$forcedLogoffTimeoutMinutes,

    [Parameter(Mandatory = $false)]
    [string]$forcedLogoffMessage,

    [Parameter(Mandatory = $false)]
    [boolean]$enableServerInSingleUserMode,

    [Parameter(Mandatory = $false)]
    [boolean]$storeCALOnBroker,

    [Parameter(Mandatory = $false)]
    [boolean]$storeCALOnClient,

    [Parameter(Mandatory = $false)]
    [boolean]$reauthSecureTunnelAfterInterruption,

    [Parameter(Mandatory = $false)]
    [ValidateSet('DISABLED','MIXED','ENABLED','ENHANCED')]
    [string]$messageSecurityMode,

    [Parameter(Mandatory = $false)]
    [boolean]$enableIPSecForSecurityServerPairing,

    [Parameter(Mandatory = $false)]
    $HvServer = $null
  )

  begin {
    $services = Get-ViewAPIService -hvServer $hvServer
    if ($null -eq $services) {
      Write-Error "Could not retrieve ViewApi services from connection object"
      break
    }
  }

  process {

    $updates = @()
    if ( $PSBoundParameters.ContainsKey('Key') -and $PSBoundParameters.ContainsKey('Value') ) {
      $updates += Get-MapEntry -key $key -value $value
    } elseif ($key -or $value) {
      Write-Error "Both key:[$key] and value:[$value] needs to be specified"
    }
    if ($spec) {
      try {
        $specObject = Get-JsonObject -specFile $spec
      } catch {
        Write-Error "Json file exception, $_"
        return
      }
      foreach ($member in ($specObject.PSObject.Members | Where-Object { $_.MemberType -eq 'NoteProperty' })) {
        $updates += Get-MapEntry -key $member.name -value $member.value
      }
    }
    if ($clientMaxSessionTimePolicy) {
        $updates += Get-MapEntry -key 'generalData.clientMaxSessionTimePolicy' -Value $clientMaxSessionTimePolicy
    }
    if ($clientMaxSessionTimeMinutes) {
        $updates += Get-MapEntry -key 'generalData.clientMaxSessionTimeMinutes' -Value $clientMaxSessionTimeMinutes
    }
    if ($clientIdleSessionTimeoutPolicy) {
        $updates += Get-MapEntry -key 'generalData.clientIdleSessionTimeoutPolicy' -Value $clientIdleSessionTimeoutPolicy
    }
    if ($clientIdleSessionTimeoutMinutes) {
        $updates += Get-MapEntry -key 'generalData.clientIdleSessionTimeoutMinutes' -Value $clientIdleSessionTimeoutMinutes
    }
    if ($clientSessionTimeoutMinutes) {
        $updates += Get-MapEntry -key 'generalData.clientSessionTimeoutMinutes' -Value $clientSessionTimeoutMinutes
    }
    if ($desktopSSOTimeoutPolicy) {
        $updates += Get-MapEntry -key 'generalData.desktopSSOTimeoutPolicy' -Value $desktopSSOTimeoutPolicy
    }
    if ($desktopSSOTimeoutMinutes) {
        $updates += Get-MapEntry -key 'generalData.desktopSSOTimeoutMinutes' -Value $desktopSSOTimeoutMinutes
    }
    if ($applicationSSOTimeoutPolicy) {
        $updates += Get-MapEntry -key 'generalData.applicationSSOTimeoutPolicy' -Value $applicationSSOTimeoutPolicy
    }
    if ($applicationSSOTimeoutMinutes) {
        $updates += Get-MapEntry -key 'generalData.applicationSSOTimeoutMinutes' -Value $applicationSSOTimeoutMinutes
    }
    if ($viewAPISessionTimeoutMinutes) {
        $updates += Get-MapEntry -key 'generalData.viewAPISessionTimeoutMinutes' -Value $viewAPISessionTimeoutMinutes
    }
    if ($preLoginMessage) {
        $updates += Get-MapEntry -key 'generalData.preLoginMessage' -Value $preLoginMessage
    }
    if ($displayWarningBeforeForcedLogoff) {
        $updates += Get-MapEntry -key 'generalData.displayWarningBeforeForcedLogoff' -Value $displayWarningBeforeForcedLogoff
    }
    if ($forcedLogoffTimeoutMinutes) {
        $updates += Get-MapEntry -key 'generalData.forcedLogoffTimeoutMinutes' -Value $forcedLogoffTimeoutMinutes
    }
    if ($forcedLogoffMessage) {
        $updates += Get-MapEntry -key 'generalData.forcedLogoffMessage' -Value $forcedLogoffMessage
    }
    if ($enableServerInSingleUserMode) {
        $updates += Get-MapEntry -key 'generalData.enableServerInSingleUserMode' -Value $enableServerInSingleUserMode
    }
    if ($storeCALOnBroker) {
        $updates += Get-MapEntry -key 'generalData.storeCALOnBroker' -Value $storeCALOnBroker
    }
    if ($storeCALOnClient) {
        $updates += Get-MapEntry -key 'generalData.storeCALOnClient' -Value $storeCALOnClient
    }
    if ($reauthSecureTunnelAfterInterruption) {
        $updates += Get-MapEntry -key 'securityData.reauthSecureTunnelAfterInterruption' -Value $reauthSecureTunnelAfterInterruption
    }
    if ($messageSecurityMode) {
        $updates += Get-MapEntry -key 'securityData.messageSecurityMode' -Value $messageSecurityMode
    }
    if ($enableIPSecForSecurityServerPairing) {
        $updates += Get-MapEntry -key 'securityData.enableIPSecForSecurityServerPairing' -Value $enableIPSecForSecurityServerPairing
    }

    if ($Force -or $PSCmdlet.ShouldProcess($HVServer.Name)) {

      $global_settings_helper = New-Object VMware.Hv.GlobalSettingsService

      $global_settings_helper.GlobalSettings_Update($services,$updates)

      Write-Host "Global settings updated."

    }

  }

  end {
    [System.gc]::collect()
  }
}

function Get-HVLocalSession {
<#
.SYNOPSIS
Provides a list with all sessions on the local pod (works in CPA and non-CPA)

.DESCRIPTION
The Get-HVLocalSession gets all local session by using view API service object(hvServer) of Connect-HVServer cmdlet.

.PARAMETER HvServer
    View API service object of Connect-HVServer cmdlet.

.EXAMPLE
    Get-HVLocalSession
    Get all local sessions

.NOTES
    Author                      : Wouter Kursten.
    Author email                : wouter@retouw.nl
    Version                     : 1.0

    ===Tested Against Environment====
    Horizon View Server Version : 7.0.2, 7.1.0, 7.3.2
    PowerCLI Version            : PowerCLI 6.5, PowerCLI 6.5.1
    PowerShell Version          : 5.0

#>
  [CmdletBinding()]

  param(
      [Parameter(Mandatory = $false)]
      $HvServer = $null
  )

  $services = Get-ViewAPIService -HvServer $HvServer
  if ($null -eq $services) {
    Write-Error "Could not retrieve ViewApi services from connection object."
    break
  }

  $query_service_helper = New-Object VMware.Hv.QueryServiceService
  $query = New-Object VMware.Hv.QueryDefinition

  $query.queryEntityType = 'SessionLocalSummaryView'
  $SessionList = @()
  $GetNext = $false
  $queryResults = $query_service_helper.QueryService_Create($services, $query)
  do {
    if ($GetNext) { $queryResults = $query_service_helper.QueryService_GetNext($services, $queryResults.id) }
    $SessionList += $queryResults.results
    $GetNext = $true
  }
  while ($queryResults.remainingCount -gt 0)
    $query_service_helper.QueryService_Delete($services, $queryResults.id)


  return $sessionlist
  [System.gc]::collect()
}

function Restart-HVMachine {
  <#
.Synopsis
    Restart Horizon View desktops.
.DESCRIPTION
    Queries and restart virtual machines.
      Graceful OS restart for Full-clone pool.
      Graceful OS shut down > Delete VM > Create new VM > Power On for Instant-clone pool.
      The machines list would be determined based on queryable fields machineName. Use an asterisk (*) as wildcard.
      If the result has multiple machines all will be reset.
.PARAMETER MachineName
    The name of the Machine(s) to query for.
      This is a required value.
.PARAMETER HvServer
  Reference to Horizon View Server to query the virtual machines from. If the value is not passed or null then
  first element from global:DefaultHVServers would be considered in-place of hvServer
.EXAMPLE
    Restart-HVMachine -MachineName 'PowerCLIVM'
    Queries VM(s) with given parameter machineName
.EXAMPLE
    Restart-HVMachine -MachineName 'PowerCLIVM*'
    Queries VM(s) with given parameter machinename with wildcard character *
.NOTES
  Author                      : Goncharenko Roman
  Author email                : romqatt@gmail.com
  Version                     : 1.0

  ===Tested Against Environment====
  Horizon View Server Version : 7.3.2
  PowerCLI Version            : PowerCLI 12.4
  PowerShell Version          : 5.1
#>

  [CmdletBinding(
      SupportsShouldProcess = $true,
      ConfirmImpact = 'High'
  )]

  param(

      [Parameter(Mandatory = $true)]
      [string]
      $MachineName,

      [Parameter(Mandatory = $false)]
      $HvServer
  )

  Begin {

      $services = Get-ViewAPIService -hvServer $hvServer

      if ($null -eq $services) {
          Write-Error "Could not retrieve ViewApi services from connection object"
          break
      }

      $machineList = Find-HVMachine -Param $PSBoundParameters

      if (-not $machineList) {
          Write-Host "Restart-HVMachine: No Virtual Machine(s) Found with given search parameters"
          break
      }
  }
  Process {
      if ($Force -or $PSCmdlet.ShouldProcess($MachineName)) {
          foreach ($machine in $machinelist) {
              $services.machine.Machine_RestartMachines($machine.id)
          }
      }
  }
  End {
      [System.gc]::collect()
  }
}

function Reset-HVMachine {
	<#
	.Synopsis
	   Resets Horizon View desktops.

	.DESCRIPTION
	   Queries and resets virtual machines, the machines list would be determined
     based on queryable fields machineName. Use an asterisk (*) as wildcard. If the result has multiple machines all will be reset.
     Please note that on an Instant Clone Pool this will do the same as a recover of the machine.

	.PARAMETER MachineName
	   The name of the Machine(s) to query for.
	   This is a required value.

	.PARAMETER HvServer
		Reference to Horizon View Server to query the virtual machines from. If the value is not passed or null then
		first element from global:DefaultHVServers would be considered in-place of hvServer

	.EXAMPLE
	   reset-HVMachine -MachineName 'PowerCLIVM'
	   Queries VM(s) with given parameter machineName


	.EXAMPLE
	   reset-HVMachine -MachineName 'PowerCLIVM*'
	   Queries VM(s) with given parameter machinename with wildcard character *

	.NOTES
		Author                      : Wouter Kursten
		Author email                : wouter@retouw.nl
		Version                     : 1.0

		===Tested Against Environment====
		Horizon View Server Version : 7.3.2
		PowerCLI Version            : PowerCLI 6.5, PowerCLI 6.5.1
		PowerShell Version          : 5.0
	#>

  [CmdletBinding(
  SupportsShouldProcess = $true,
  ConfirmImpact = 'High'
  )]

  param(

  [Parameter(Mandatory = $true)]
  [string]
  $MachineName,

  [Parameter(Mandatory = $false)]
  $HvServer = $null
  )

  Begin {

    $services = Get-ViewAPIService -hvServer $hvServer

    if ($null -eq $services) {
      Write-Error "Could not retrieve ViewApi services from connection object"
      break
    }

    $machineList = Find-HVMachine -Param $PSBoundParameters

    if (!$machineList) {
      Write-Host "Reset-HVMachine: No Virtual Machine(s) Found with given search parameters"
      break
    }
  }
  Process {
    if ($Force -or $PSCmdlet.ShouldProcess($MachineName)) {
      foreach ($machine in $machinelist){
        $services.machine.Machine_ResetMachines($machine.id)
      }
    }
  }
  End {
    [System.gc]::collect()
  }
}
function Rebuild-HVMachine {
	<#
	.Synopsis
	   Rebuilds Horizon View desktops.
	.DESCRIPTION
	   Queries and rebuilds virtual machines (create new cloned VM with same name from same template and applies same customization specification), the machines list would be determined
     based on queryable fields machineName. Use an asterisk (*) as wildcard. If the result has multiple machines all will be reset.
	.PARAMETER MachineName
	   The name of the Machine(s) to query for.
	   This is a required value.
	.PARAMETER HvServer
		Reference to Horizon View Server to query the virtual machines from. If the value is not passed or null then
		first element from global:DefaultHVServers would be considered in-place of hvServer
	.EXAMPLE
	   rebuild-HVMachine -MachineName 'PowerCLIVM'
	   Queries VM(s) with given parameter machineName
	.EXAMPLE
	   rebuild-HVMachine -MachineName 'PowerCLIVM*'
	   Queries VM(s) with given parameter machinename with wildcard character *
	.NOTES
		Author                      : Mayank Goyal
		Author email                : mayankgoyalmax@gmail.com
		Version                     : 1.0

		===Tested Against Environment====
		Horizon View Server Version : 7.3.0
		PowerCLI Version            : PowerCLI 6.5, PowerCLI 6.5.1
		PowerShell Version          : 5.0
	#>

  [CmdletBinding(
  SupportsShouldProcess = $true,
  ConfirmImpact = 'High'
  )]

  param(

  [Parameter(Mandatory = $true)]
  [string]
  $MachineName,

  [Parameter(Mandatory = $false)]
  $HvServer = $null
  )

  Begin {

    $services = Get-ViewAPIService -hvServer $hvServer

    if ($null -eq $services) {
      Write-Error "Could not retrieve ViewApi services from connection object"
      break
    }

    $machineList = Find-HVMachine -Param $PSBoundParameters

    if (!$machineList) {
      Write-Host "Rebuild-HVMachine: No Virtual Machine(s) Found with given search parameters"
      break
    }
  }
  Process {
    if ($Force -or $PSCmdlet.ShouldProcess($MachineName)) {
      foreach ($machine in $machinelist){
        $services.machine.Machine_RebuildMachines($machine.id)
      }
    }
  }
  End {
    [System.gc]::collect()
  }
}
function Remove-HVMachine {
	<#
	.Synopsis
	    Remove a Horizon View desktop or desktops.

	.DESCRIPTION
	    Deletes a VM or an array of VM's from Horizon. Utilizes an Or query filter to match machine names.

    .PARAMETER HVServer
		The Horizon server where the machine to be deleted resides. Parameter is not mandatory,
        but if you do not specify the server, than make sure you are connected to a Horizon server
        first with connect-hvserver.

	.PARAMETER MachineNames
        The name or names of the machine(s) to be deleted. Accepts a single VM or an array of VM names.This is a mandatory parameter.

    .PARAMETER DeleteFromDisk
        Determines whether the Machine VM should be deleted from vCenter Server. This is only applicable for managed machines.
        This must always be true for machines in linked and instant clone desktops.
        This defaults to true for linked and instant clone machines and false for all other types.

	.EXAMPLE
	    Remove-HVMachine -HVServer 'horizonserver123' -MachineNames 'LAX-WIN10-002'
	    Deletes VM 'LAX-WIN10-002' from HV Server 'horizonserver123'

	.EXAMPLE
	    Remove-HVMachine -HVServer 'horizonserver123' -MachineNames $machines
        Deletes VM's contained within an array of machine names from HV Server 'horizonserver123'

    .EXAMPLE
        Remove-HVMachine -HVServer 'horizonserver123' -MachineNames 'ManualVM01' -DeleteFromDisk:$false
        Deletes VM 'ManualVM01' from Horizon inventory, but not from vSphere. Note this only works for Full Clone VMs.

	.NOTES
		Author                      : Jose Rodriguez
		Author email                : jrodsguitar@gmail.com
		Version                     : 1.0

		===Tested Against Environment====
		Horizon View Server Version : 7.1.1
		PowerCLI Version            : PowerCLI 6.5, PowerCLI 6.5.1
		PowerShell Version          : 5.0
	#>

	[CmdletBinding(
	  SupportsShouldProcess = $true,
		ConfirmImpact = 'High'
	)]

	param(

		[Parameter(Mandatory = $true)]
		[array]
    $MachineNames,

    [Parameter(Mandatory = $false)]
    [switch]$DeleteFromDisk,

		[Parameter(Mandatory = $false)]
		$HVServer = $null
	)

  Begin {
    #Connect to HV Server
    $services = Get-ViewAPIService -HVServer $HVServer

    if ($null -eq $services) {
      Write-Error "Could not retrieve ViewApi services from connection object"
      break
    }

    #Connect to Query Service
    $queryService = New-Object 'Vmware.Hv.QueryServiceService'
    #QUery Definition
    $queryDefinition = New-Object 'Vmware.Hv.QueryDefinition'
    #Query Filter
    $queryDefinition.queryEntityType = 'MachineNamesView'
  }
  Process {
    #Create Filter Set so we can populate it with QueryFilterEquals data
    [VMware.Hv.queryfilter[]]$filterSet = @()
    foreach($machine in $machineNames){

        #queryfilter values
        $queryFilterEquals = New-Object VMware.Hv.QueryFilterEquals
        $queryFilterEquals.memberName = "base.name"
        $queryFilterEquals.value = "$machine"

        $filterSet += $queryFilterEquals
    }

    #Or Filter
    $orFilter = New-Object VMware.Hv.QueryFilterOr
    $orFilter.filters = $filterSet

    #Set Definition filter to value of $orfilter
    $queryDefinition.filter = $orFilter

    #Retrieve query results. Returns all machines to be deleted
    $queryResults = $queryService.QueryService_Query($services,$queryDefinition)

    #Assign VM Object to variable
    $deleteThisMachine = $queryResults.Results

    if ($Force -or $PSCmdlet.ShouldProcess($deleteThisMachine)) {

      #Machine Service
      $machineService = new-object VMware.Hv.MachineService

      #Get Machine Service machine object
      $deleteMachine = $machineService.Machine_GetInfos($services,$deleteThisMachine.Id)

      #If sessions exist on the machines we are going to delete than force kill those sessions.
      #The deleteMachines method will not work if there are any existing sessions so this step is very important.
      write-host "Attempting log off of machines"

      if($deleteMachine.base.session.id){
        $trys = 0

        do{

          foreach($session in $deleteMachine.base.session){

            $sessions = $null
            [VMware.Hv.SessionId[]]$sessions += $session

          }

          try{

            write-host "`n"
            write-host "Attempting log off of machines"
            write-host "`n"
            $logOffSession = new-object 'VMware.Hv.SessionService'
            $logOffSession.Session_LogoffSessionsForced($services,$sessions)

            #Wait more for Sessions to end
            Start-Sleep -Seconds 5

          }

          catch{

            Write-Host "Attempted to Log Off Sessions from below machines but recieved an error. This doesn't usually mean it failed. Typically the session is succesfully logged off but takes some time"
            write-host "`n"
            write-host ($deleteMachine.base.Name -join "`n")

            start-sleep -seconds 5

          }

          if(($trys -le 10)){

            write-host "`n"
            write-host "Retrying Logoffs: $trys times"
            #Recheck existing sessions
            $deleteMachine = $machineService.Machine_GetInfos($services,$deleteThisMachine.Id)

          }

          $trys++

        }

        until((!$deleteMachine.base.session.id) -or ($trys -gt 10))

      }

      #Create delete spec for the DeleteMachines method
      $deleteSpec = [VMware.Hv.MachineDeleteSpec]::new()
      $deleteSpec.DeleteFromDisk = $DeleteFromDisk
      $deleteSpec.ArchivePersistentDisk = $false

      #Delete the machines
      if($DeleteFromDisk){write-host "Attempting to Delete:"}else{write-host "Attempting to remove from inventory:"}
      Write-Output ($deleteMachine.base.Name -join "`n")
      $machineService.Machine_DeleteMachines($services,$deleteMachine.id,$deleteSpec)
    }
  }
  End {
    [System.gc]::collect()
  }
}

function Get-HVHealth {
	<#
	.Synopsis
	   Pulls health information from Horizon View

	.DESCRIPTION
	   Queries and returns health information from the local Horizon Pod

	.PARAMETER Servicename
	  The name of the service to query the health for.
    This will default to Connection server health.
    Available services are ADDomain,CertificateSSOConnector,ConnectionServer,EventDatabase,SAMLAuthenticator,SecurityServer,ViewComposer,VirtualCenter,Pod

	.PARAMETER HvServer
		Reference to Horizon View Server to query the virtual machines from. If the value is not passed or null then
		first element from global:DefaultHVServers would be considered in-place of hvServer

	.EXAMPLE
	   Get-HVHealth -service connectionserver
	   Returns health for the connectionserver(s)


	.EXAMPLE
	   Get-HVHealth -service ViewComposer
	   Returns health for the View composer server(s)

	.NOTES
		Author                      : Wouter Kursten
		Author email                : wouter@retouw.nl
		Version                     : 1.0

		===Tested Against Environment====
		Horizon View Server Version : 7.3.2,7.4
		PowerCLI Version            : PowerCLI 6.5, PowerCLI 6.5.1
		PowerShell Version          : 5.0
	#>

	  [CmdletBinding()]

	  param(

		[Parameter(Mandatory = $false)]
    [ValidateSet('ADDomain', 'CertificateSSOConnector', 'ConnectionServer', 'EventDatabase', 'SAMLAuthenticator', 'SecurityServer', 'ViewComposer', 'VirtualCenter', 'Pod')]
    [string]
    $Servicename = 'ConnectionServer',

		[Parameter(Mandatory = $false)]
		$HvServer = $null
	  )

  $services = Get-ViewAPIService -hvServer $hvServer
    if ($null -eq $services) {
	    Write-Error "Could not retrieve ViewApi services from connection object"
	    break
	  }

    switch ($Servicename) {
      'ADDomain' {
          $healthinfo=$services.ADDomainHealth.ADDomainHealth_List()
      }
      'CertificateSSOConnector' {
        $healthinfo=$services.CertificateSSOConnectorHealth.CertificateSSOConnectorHealth_list()
      }
      'ConnectionServer' {
        $healthinfo=$services.ConnectionServerHealth.ConnectionServerHealth_list()
      }
      'EventDatabase' {
        $healthinfo=$services.EventDatabaseHealth.EventDatabaseHealth_Get()
      }
      'SAMLAuthenticator' {
        $healthinfo=$services.SAMLAuthenticatorHealth.SAMLAuthenticatorHealth_List()
      }
      'SecurityServer' {
        $healthinfo=$services.SecurityServerHealth.SecurityServerHealth_List()
      }
      'ViewComposer' {
        $healthinfo=$services.ViewComposerHealth.ViewComposerHealth_List()
      }
      'VirtualCenter' {
        $healthinfo=$services.VirtualCenterHealth.VirtualCenterHealth_List()
      }
      'Pod' {
        $healthinfo=$services.podhealth.PodHealth_List()
      }
    }
    if ($healthinfo){
      return $healthinfo
    }
    else {
      Write-Output "No healthdata found for the $servicename service"
    }
  [System.gc]::collect()
}

function New-HVPodFederation {
	<#
	.Synopsis
	   Initiates a Horizon View Pod Federation (Cloud Pod Architecture)

	.DESCRIPTION
	   Starts the initialisation of a Horizon View Pod Federation. Other pod's can be joined to this federation to form the Cloud Pod Architecture

	.PARAMETER HvServer
		Reference to Horizon View Server to query the virtual machines from. If the value is not passed or null then
		first element from global:DefaultHVServers would be considered in-place of hvServer

	.EXAMPLE
	   new-hvpodfederation
	   Returns health for the connectionserver(s)

	.NOTES
		Author                      : Wouter Kursten
		Author email                : wouter@retouw.nl
		Version                     : 1.0

		===Tested Against Environment====
		Horizon View Server Version : 7.3.2,7.4
		PowerCLI Version            : PowerCLI 6.5, PowerCLI 6.5.1
		PowerShell Version          : 5.0
	#>

	[CmdletBinding(
	SupportsShouldProcess = $false,
	ConfirmImpact = 'High'
	)]

	param(

	[Parameter(Mandatory = $false)]
	$HvServer = $null
	)


  $services = Get-ViewAPIService -hvServer $hvServer
  if ($null -eq $services) {
		Write-Error "Could not retrieve ViewApi services from connection object"
	  break
	}
	$services.PodFederation.PodFederation_Initialize()

  Write-Output "The Pod Federation has been initiated. Please wait a couple of minutes and refresh any open admin consoles to use the newly available functionality."

  [System.gc]::collect()
}

function Remove-HVPodFederation {
	<#
	.Synopsis
	   Uninitiates a Horizon View Pod Federation (Cloud Pod Architecture)

	.DESCRIPTION
	   Starts the uninitialisation of a Horizon View Pod Federation. It does NOT remove a pod from a federation.

	.PARAMETER HvServer
		Reference to Horizon View Server to query the virtual machines from. If the value is not passed or null then
		first element from global:DefaultHVServers would be considered in-place of hvServer

	.EXAMPLE
	   Starts the Uninitiates a Horizon View Pod Federation.
	   Unintialises

	.NOTES
		Author                      : Wouter Kursten
		Author email                : wouter@retouw.nl
		Version                     : 1.0

		===Tested Against Environment====
		Horizon View Server Version : 7.3.2,7.4
		PowerCLI Version            : PowerCLI 6.5, PowerCLI 6.5.1
		PowerShell Version          : 5.0
	#>

	[CmdletBinding(
	SupportsShouldProcess = $false,
	ConfirmImpact = 'High'
	)]

	param(

	[Parameter(Mandatory = $false)]
	$HvServer = $null
	)


  $services = Get-ViewAPIService -hvServer $hvServer
  if ($null -eq $services) {
		Write-Error "Could not retrieve ViewApi services from connection object"
		break
	}
	$services.PodFederation.PodFederation_Uninitialize()

  Write-Output "The uninitialisation of the Pod Federation has been started. Please wait a couple of minutes and refresh any open admin consoles to see the results."

  [System.gc]::collect()
}

function Get-HVPodFederation {
	<#
	.Synopsis
	   Returns information about a Horizon View Pod Federation (Cloud Pod Architecture)

	.DESCRIPTION
	   Returns information about a Horizon View Pod Federation (Cloud Pod Architecture)

	.PARAMETER HvServer
		Reference to Horizon View Server to query the virtual machines from. If the value is not passed or null then
		first element from global:DefaultHVServers would be considered in-place of hvServer

	.EXAMPLE
	   Get-HVPodFederation
	   Returns information about a Horizon View Pod Federation

	.NOTES
		Author                      : Wouter Kursten
		Author email                : wouter@retouw.nl
		Version                     : 1.0

		===Tested Against Environment====
		Horizon View Server Version : 7.3.2,7.4
		PowerCLI Version            : PowerCLI 6.5, PowerCLI 6.5.1
		PowerShell Version          : 5.0
	#>

	[CmdletBinding(
	SupportsShouldProcess = $false,
	ConfirmImpact = 'None'
	)]

	param(

	[Parameter(Mandatory = $false)]
	$HvServer = $null
	)


  $services = Get-ViewAPIService -hvServer $hvServer
  if ($null -eq $services) {
		Write-Error "Could not retrieve ViewApi services from connection object"
		break
	}
	$podfederationinfo=$services.PodFederation.PodFederation_Get()
	return $podfederationinfo

  [System.gc]::collect()
}

function Register-HVPod {
	<#
	.Synopsis
	  Registers a pod in a Horizon View Pod Federation (Cloud Pod Architecture)

	.DESCRIPTION
	  Registers a pod in a Horizon View Pod Federation. You have to be connected to the pod you are joining to the federation.

	.PARAMETER ADUserName
		User principal name of user this is required to be in the domain\username format

	.PARAMETER remoteconnectionserver
		Servername of a connectionserver that already belongs to the PodFederation

	.PARAMETER ADPassword
		Password of the type Securestring. Can be created with:
		$password = Read-Host 'Domain Password' -AsSecureString

	.PARAMETER HvServer
		Reference to Horizon View Server to query the virtual machines from. If the value is not passed or null then
		first element from global:DefaultHVServers would be considered in-place of hvServer

	.EXAMPLE
  	$adpassword = Read-Host 'Domain Password' -AsSecureString
  	register-hvpod -remoteconnectionserver "servername" -username "user\domain" -password $adpassword

	.EXAMPLE
		register-hvpod -remoteconnectionserver "servername" -username "user\domain"
		It will now ask for the password

	 .NOTES
		Author                      : Wouter Kursten
		Author email                : wouter@retouw.nl
		Version                     : 1.0

		===Tested Against Environment====
		Horizon View Server Version : 7.3.2,7.4
		PowerCLI Version            : PowerCLI 6.5, PowerCLI 6.5.1
		PowerShell Version          : 5.0
	#>

	[CmdletBinding(
	  SupportsShouldProcess = $false,
	  ConfirmImpact = 'High'
	)]

	param(
	  [Parameter(Mandatory = $true)]
	  [String]
	  $remoteconnectionserver,

	  [Parameter(Mandatory = $true)]
	  [ValidatePattern("^.+?[@\\].+?$")]
	  [String]
	  $ADUserName,

	  [Parameter(Mandatory = $true)]
	  [securestring]
	  $ADpassword,

	  [Parameter(Mandatory = $false)]
	  $HvServer = $null
	)


  $services = Get-ViewAPIService -hvServer $hvServer
  if ($null -eq $services) {
	  Write-Error "Could not retrieve ViewApi services from connection object"
	  break
	}

	#if ($ADPassword -eq $null) {
	 	#$ADPassword= Read-Host 'Please provide the Active Directory password for user $AdUsername' -AsSecureString
	#}

	$temppw = [System.Runtime.InteropServices.Marshal]::SecureStringToBSTR($ADPassword)
  	$PlainPassword = [System.Runtime.InteropServices.Marshal]::PtrToStringAuto($temppw)
  	$vcPassword = New-Object VMware.Hv.SecureString
	$enc = [system.Text.Encoding]::UTF8
	$vcPassword.Utf8String = $enc.GetBytes($PlainPassword)

	$services.PodFederation.PodFederation_join($remoteconnectionserver,$adusername,$vcpassword)
	write-host "This pod has been joined to the podfederation."

  [System.gc]::collect()
}

function Unregister-HVPod {
	<#
	.Synopsis
	   Removes a pod from a podfederation

	.DESCRIPTION
	   Starts the uninitialisation of a Horizon View Pod Federation. It does NOT remove a pod from a federation.

	.PARAMETER Podname
		The name of the pod to be removed.

	.PARAMETER Force
		This can be used to forcefully remove a pod from the pod federation. This can only be done while connected to one of the other pods in the federation

	.PARAMETER HvServer
		Reference to Horizon View Server to query the virtual machines from. If the value is not passed or null then
		first element from global:DefaultHVServers would be considered in-place of hvServer

	.EXAMPLE
		Unregister-hvpod -podname PODNAME
		Checks if you are connected to the pod and gracefully unregisters it from the podfedaration

	.EXAMPLE
		Unregister-hvpod -podname PODNAME -force
		Checks if you are connected to the pod and gracefully unregisters it from the podfedaration

	.NOTES
		Author                      : Wouter Kursten
		Author email                : wouter@retouw.nl
		Version                     : 1.0

		===Tested Against Environment====
		Horizon View Server Version : 7.3.2,7.4
		PowerCLI Version            : PowerCLI 6.5, PowerCLI 6.5.1
		PowerShell Version          : 5.0
	#>

	[CmdletBinding(
		SupportsShouldProcess = $false,
		ConfirmImpact = 'High'
	)]

	param(
		[Parameter(Mandatory = $true)]
		[string]
		$PodName,

		[Parameter(Mandatory = $false)]
		[bool]
		$force,

		[Parameter(Mandatory = $false)]
		$HvServer = $null
	)


  $services = Get-ViewAPIService -hvServer $hvServer
    if ($null -eq $services) {
	    Write-Error "Could not retrieve ViewApi services from connection object"
	    break
	  }
	$pods=$services.pod.pod_list()
	$pod=$pods | where-object {$_.displayname -like "$podname"}
	if ($force -eq $false){
		if ($pod.localpod -eq $False){
			Write-Error "You can only gracefully remove a pod when connected to that pod, please connect to a connection server in pod $podname"
			break
		}
		elseif ($pod.localpod -eq $True){
			write-host "Gracefully removing $podname from the federation"
			$services.PodFederation.PodFederation_Unjoin()
		}
	}

	elseif ($force -eq $true){
		if ($pod.localpod -eq $True){
			Write-Error "You can only forcefully remove a pod when connected to a different pod, please connect to a connection server in another pod then $podname"
			break
		}
		elseif ($pod.localpod -eq $false){
			write-host "Forcefully removing $podname from the federation"
			$services.PodFederation.PodFederation_eject($pod.id)
		}
	}



  [System.gc]::collect()
}

function Set-HVPodFederation {
	<#
	.Synopsis
		Used to change the name of a Horizon View Pod Federation (Cloud Pod Architecture)

	.DESCRIPTION
		Used to change the name of a Horizon View Pod Federation (Cloud Pod Architecture)

	.PARAMETER Name
		The new name of the Pod Federation.

	.PARAMETER HvServer
		Reference to Horizon View Server to query the virtual machines from. If the value is not passed or null then
		first element from global:DefaultHVServers would be considered in-place of hvServer

	.EXAMPLE
	   set-hvpodfederation -name "New Name"
	   Will update the name of the current podfederation.

	.NOTES
		Author                      : Wouter Kursten
		Author email                : wouter@retouw.nl
		Version                     : 1.0

		===Tested Against Environment====
		Horizon View Server Version : 7.3.2,7.4
		PowerCLI Version            : PowerCLI 6.5, PowerCLI 6.5.1
		PowerShell Version          : 5.0
	#>

	[CmdletBinding(
		SupportsShouldProcess = $false,
		ConfirmImpact = 'High'
	)]

	param(
		[Parameter(Mandatory = $true)]
		[string]
		$name,

		[Parameter(Mandatory = $false)]
		$HvServer = $null
	)


  $services = Get-ViewAPIService -hvServer $hvServer
  if ($null -eq $services) {
		Write-Error "Could not retrieve ViewApi services from connection object"
	  break
	}
	$podservice=new-object vmware.hv.podfederationservice
	$podservicehelper=$podservice.read($services)
	$podservicehelper.getDatahelper().setdisplayname($name)
	$podservice.update($services, $podservicehelper)
	Get-HVPodFederation

  [System.gc]::collect()
}

function Get-HVSite {
	<#
	.Synopsis
	   Returns information about the sites within a Horizon View Pod Federation (Cloud Pod Architecture)

	.DESCRIPTION
	   Returns information about the sites within a Horizon View Pod Federation (Cloud Pod Architecture)

	.PARAMETER HvServer
		Reference to Horizon View Server to query the virtual machines from. If the value is not passed or null then
		first element from global:DefaultHVServers would be considered in-place of hvServer

	.EXAMPLE
	   get-hvsite
	   Returns information about the sites within a Horizon View Pod Federation.

	.NOTES
		Author                      : Wouter Kursten
		Author email                : wouter@retouw.nl
		Version                     : 1.0

		===Tested Against Environment====
		Horizon View Server Version : 7.3.2,7.4
		PowerCLI Version            : PowerCLI 6.5, PowerCLI 6.5.1
		PowerShell Version          : 5.0
	#>

	[CmdletBinding(
	SupportsShouldProcess = $false,
	ConfirmImpact = 'High'
	)]

	param(

	[Parameter(Mandatory = $false)]
	$HvServer = $null
	)


  $services = Get-ViewAPIService -hvServer $hvServer
  if ($null -eq $services) {
		Write-Error "Could not retrieve ViewApi services from connection object"
		break
	}
	$hvsites=$services1.site.site_list()
	return $hvsites

  [System.gc]::collect()
}

function New-HVSite {
	<#
	.Synopsis
	   Creates a new site within a Horizon View Pod Federation (Cloud Pod Architecture)

	.DESCRIPTION
       Creates a new site within a Horizon View Pod Federation (Cloud Pod Architecture)

    .PARAMETER Name
        Name of the site (required)

    .PARAMETER Description
        Description of the site (required)

	.PARAMETER HvServer
		Reference to Horizon View Server to query the virtual machines from. If the value is not passed or null then
		first element from global:DefaultHVServers would be considered in-place of hvServer

	.EXAMPLE
	   new-hvsite -name "NAME" -description "DESCRIPTION"
	   Returns information about the sites within a Horizon View Pod Federation.

	.NOTES
		Author                      : Wouter Kursten
		Author email                : wouter@retouw.nl
		Version                     : 1.0

		===Tested Against Environment====
		Horizon View Server Version : 7.3.2,7.4
		PowerCLI Version            : PowerCLI 6.5, PowerCLI 6.5.1
		PowerShell Version          : 5.0
	#>

	[CmdletBinding(
	    SupportsShouldProcess = $false,
	    ConfirmImpact = 'High'
	)]

	param(
        [Parameter(Mandatory = $true)]
        [string]
        $name,

        [Parameter(Mandatory = $true)]
        [string]
        $description,

	    [Parameter(Mandatory = $false)]
	    $HvServer = $null
	)


    $services = Get-ViewAPIService -hvServer $hvServer
    if ($null -eq $services) {
	    Write-Error "Could not retrieve ViewApi services from connection object"
		break
	}
    $sitebase=new-object vmware.hv.sitebase
    $sitebase.displayname=$name
    $sitebase.description=$description
    $services.site.site_create($sitebase)

  [System.gc]::collect()
}

function Set-HVSite {
	<#
	.Synopsis
	   renames a new site within a Horizon View Pod Federation (Cloud Pod Architecture)

	.DESCRIPTION
       renames a new site within a Horizon View Pod Federation (Cloud Pod Architecture)

    .PARAMETER Sitename
        Name of the site to be edited

    .PARAMETER Name
        New name of the site (required)

    .PARAMETER Description
        New description of the site (required)

	.PARAMETER HvServer
		Reference to Horizon View Server to query the virtual machines from. If the value is not passed or null then
		first element from global:DefaultHVServers would be considered in-place of hvServer

	.EXAMPLE
	   set-hvsite -site "CURRENTSITENAME" -name "NAME" -description "DESCRIPTION"
	   Returns information about the sites within a Horizon View Pod Federation.

	.NOTES
		Author                      : Wouter Kursten
		Author email                : wouter@retouw.nl
		Version                     : 1.0

		===Tested Against Environment====
		Horizon View Server Version : 7.3.2,7.4
		PowerCLI Version            : PowerCLI 6.5, PowerCLI 6.5.1
		PowerShell Version          : 5.0
	#>

	[CmdletBinding(
	    SupportsShouldProcess = $false,
	    ConfirmImpact = 'High'
	)]

	param(
        [Parameter(Mandatory = $true)]
        [string]
        $sitename,

        [Parameter(Mandatory = $true)]
        [string]
        $name,

        [Parameter(Mandatory = $true)]
        [string]
        $description,

	    [Parameter(Mandatory = $false)]
	    $HvServer = $null
	)


    $services = Get-ViewAPIService -hvServer $hvServer
    if ($null -eq $services) {
	    Write-Error "Could not retrieve ViewApi services from connection object"
		break
    }
    $siteid=$services1.site.site_list() | where-object {$_.base.displayname -like $sitename}
    $siteservice=new-object vmware.hv.siteservice
    $sitebasehelper=$siteservice.read($services, $siteid.id)
    $sitebasehelper.getbasehelper().setdisplayname($name)
    $sitebasehelper.getbasehelper().setdescription($description)
    $siteservice.update($services, $sitebasehelper)

    [System.gc]::collect()
}

function Remove-HVSite {
	<#
	.Synopsis
	   renames a new site within a Horizon View Pod Federation (Cloud Pod Architecture)

	.DESCRIPTION
       renames a new site within a Horizon View Pod Federation (Cloud Pod Architecture)

  .PARAMETER Name
    Name of the site (required)

	.PARAMETER HvServer
		Reference to Horizon View Server to query the virtual machines from. If the value is not passed or null then
		first element from global:DefaultHVServers would be considered in-place of hvServer

	.EXAMPLE
	   set-hvsite -site "CURRENTSITENAME" -name "NAME" -description "DESCRIPTION"
	   Returns information about the sites within a Horizon View Pod Federation.

	.NOTES
		Author                      : Wouter Kursten
		Author email                : wouter@retouw.nl
		Version                     : 1.0

		===Tested Against Environment====
		Horizon View Server Version : 7.3.2,7.4
		PowerCLI Version            : PowerCLI 6.5, PowerCLI 6.5.1
		PowerShell Version          : 5.0
	#>

	[CmdletBinding(
	    SupportsShouldProcess = $false,
	    ConfirmImpact = 'High'
	)]

	param(
        [Parameter(Mandatory = $true)]
        [string]
        $name,

        [Parameter(Mandatory = $false)]
	    $HvServer = $null
	)


    $services = Get-ViewAPIService -hvServer $hvServer
    if ($null -eq $services) {
	    Write-Error "Could not retrieve ViewApi services from connection object"
		break
    }
    $siteid=$services1.site.site_list() | where-object {$_.base.displayname -like $name}
    $services.site.site_delete($siteid.id)

    [System.gc]::collect()
}

function Get-HVHomeSite {
	<#
	.Synopsis
	   Gets the configured Horizon View Homesites

	.DESCRIPTION
    Gets the configured Horizon View Homesites

  .PARAMETER Group
		User principal name of a group

  .PARAMETER HvServer
		Reference to Horizon View Server to query the virtual machines from. If the value is not passed or null then
		first element from global:DefaultHVServers would be considered in-place of hvServer

	.EXAMPLE
     Get-HVHomeSite

  .EXAMPLE
    Get-HVHomeSite -group group@domain

	.NOTES
		Author                      : Wouter Kursten
		Author email                : wouter@retouw.nl
		Version                     : 1.0

		===Tested Against Environment====
		Horizon View Server Version : 7.4
		PowerCLI Version            : PowerCLI 10
		PowerShell Version          : 5.0
	#>

	[CmdletBinding(
	    SupportsShouldProcess = $false,
	    ConfirmImpact = 'High'
	)]

	param(
    [Parameter(Mandatory = $false)]
    [ValidatePattern("^.+?[@\\].+?$")]
    [String]
    $Group,

    [Parameter(Mandatory = $false)]
    $HvServer = $null
	)

  begin{
    $services = Get-ViewAPIService -hvServer $hvServer
    if ($null -eq $services) {
	    Write-Error "Could not retrieve ViewApi services from connection object"
		  break
    }
  }

  process{
    $hsresults = Get-HVQueryResult -EntityType UserHomeSiteInfo  -HvServer $HvServer
    $resultsoverview=@()

    foreach ($hsresult in $hsresults){
    if ($hsresult.Globalentitlement){
      $Globalentitlement = ($services.GlobalEntitlement.GlobalEntitlement_Get($hsresult.base.GlobalEntitlement)).base.displayname
    }
    else{
      $Globalentitlement=""
    }

    if (($hsresult.globalapplicationEntitlement)){
      $GlobalApplicationEntitlement = ($services.GlobalApplicationEntitlement.GlobalApplicationEntitlement_Get($hsresult.base.GlobalApplicationEntitlement)).base.displayname
    }
    else{
      $GlobalApplicationEntitlement=""
    }

    $resultsoverview+=New-Object PSObject -Property @{"id" = ($hsresult).id;
      "Group" = ($services.ADUserOrGroup.ADUserOrGroup_Get(($hsresult.base).userorgroup)).base.displayname;
      "Site" = ($services.site.site_Get($hsresult.base.site)).base.displayname;
      "Globalentitlement" =$Globalentitlement;
      "Globalapplicationentitlement" =$GlobalApplicationEntitlement;
    }
    }
    if ($group){
      $results=$resultsoverview | where-object {$_.Group -eq $group} | select-object id,Group,Site,Globalentitlement,GlobalApplicationEntitlement
    }
    else{
      $results=$resultsoverview | select-object id,Group,Site,Globalentitlement,GlobalApplicationEntitlement
    }
    return $results
    [System.gc]::collect()
  }

}

function New-HVHomeSite {
	<#
	.Synopsis
    Defines a homesite within a Horizon View Cloud Pod architecture

	.DESCRIPTION
    Creates a new homesite within a Cloud Pod Archtitecture. By default it will be applied to everything
    but the choice can be made to only apply for a single global entitlement or singel global application entitlement

  .PARAMETER Group
    User principal name of a group

  .PARAMETER Site
    Name of the Horizon View Site

  .PARAMETER globalEntitlement
    Name of the global entitlement

  .PARAMETER globalApplicationEntitlement
    Name of the global application entitlement

	.PARAMETER HvServer
    Reference to Horizon View Server to query the virtual machines from. If the value is not passed or null then
    first element from global:DefaultHVServers would be considered in-place of hvServer

	.EXAMPLE
    New-HVHomeSite -group group@domain -site SITE

  .EXAMPLE
    New-HVHomeSite -group group@domain -site SITE -globalapplicationentitlement ge-ap01

  .EXAMPLE
    New-HVHomeSite -group group@domain -site SITE -globalentitlement GE_Production

	.NOTES
		Author                      : Wouter Kursten
		Author email                : wouter@retouw.nl
		Version                     : 1.0

		===Tested Against Environment====
		Horizon View Server Version : 7.4
		PowerCLI Version            : PowerCLI 10.1.1
		PowerShell Version          : 5.0
	#>


  [CmdletBinding(DefaultParameterSetName="Default")]
	param(
    [Parameter(Mandatory = $true,ParameterSetName="Default")]
    [Parameter(ParameterSetName = "globalEntitlement")]
    [Parameter(ParameterSetName = "globalApplicationEntitlement")]
    [ValidatePattern("^.+?[@\\].+?$")]
    [String]
    $Group,

    [Parameter(Mandatory = $true,ParameterSetName="Default")]
    [Parameter(ParameterSetName = "globalEntitlement")]
    [Parameter(ParameterSetName = "globalApplicationEntitlement")]
    [String]
    $Site,

    [Parameter(Mandatory = $false,ParameterSetName="globalEntitlement")]
    [String]
    $globalEntitlement ,

    [Parameter(Mandatory = $false,ParameterSetName="globalApplicationEntitlement")]
    [String]
    $globalApplicationEntitlement ,

    [Parameter(Mandatory = $false,ParameterSetName="Default")]
    [Parameter(ParameterSetName = "globalEntitlement")]
    [Parameter(ParameterSetName = "globalApplicationEntitlement")]
    $HvServer = $null
  )

  begin{
    $services = Get-ViewAPIService -hvServer $hvServer
    if ($null -eq $services) {
	    Write-Error "Could not retrieve ViewApi services from connection object"
		  break
    }
  }

  process {
    $groupinfo = Get-UserInfo -UserName $Group
    $UserOrGroupName = $groupinfo.Name
    $Domain = $groupinfo.Domain
    $filter1 = Get-HVQueryFilter 'base.name' -Eq $UserOrGroupName
    $filter2 = Get-HVQueryFilter 'base.domain' -Eq $Domain
    $filter3 = Get-HVQueryFilter 'base.group' -Eq $true
    $andFilter = Get-HVQueryFilter -And -Filters @($filter1, $filter2, $filter3)
    $adresults = Get-HVQueryResult -EntityType ADUserOrGroupSummaryView -Filter $andFilter -HvServer $HvServer

    if ($adresults.length -ne 1) {
      Write-host "Unable to find specific group with given search parameters"
      break
    }
    $userhomesitebase=new-object VMware.Hv.UserHomeSiteBase
    $userhomesitebase.UserOrGroup=$adresults.id
    $userhomesitebase.site=($services.site.site_list() | where-object {$_.base.displayname -eq $site}).id
    if ($globalEntitlement){
      $geresults = Get-HVQueryResult -EntityType GlobalEntitlementSummaryView -HvServer $HvServer
      $geid=$geresults | where-object {$_.base.displayname -eq $globalEntitlement}
      $userhomesitebase.globalEntitlement=$geid.id
    }
    elseif($globalApplicationEntitlement){
      $gaefilter1 = Get-HVQueryFilter 'data.name' -Eq $globalApplicationEntitlement
      $gaeresults = Get-HVQueryResult -EntityType ApplicationInfo -Filter $gaefilter1 -HvServer $HvServer
      $userhomesitebase.GlobalApplicationEntitlement=$gaeresults.id
    }
  $services.UserHomeSite.UserHomeSite_Create($userhomesitebase)
  }
}

function Set-HVEventDatabase {
	<#
  .Synopsis
    Registers or changes a Horizon View Event database.

	.DESCRIPTION
    Registers or changes a Horizon View Event database

  .PARAMETER ServerName
    Name of the database server (Required)

  .PARAMETER Databasetype
    Database type, possible options: MYSQL,SQLSERVER,ORACLE. Defaults to SQLSERVER

  .PARAMETER DatabasePort
    Port number on the database server to which View will send events. Defaults to 1433.

  .PARAMETER Databasename
    Name of the Database (required)

  .PARAMETER TablePrefix
    Prefix to use for the Event Databse. Allowed characters are letters, numbers, and the characters @, $, #,  _, and may not be longer than 6 characters.

  .PARAMETER UserName
    UserName to connect to the database (required)

  .PARAMETER Password
    Password of the user connecting to the database in Securestring format.
    Can be created with:  $password = Read-Host 'Domain Password' -AsSecureString

  .PARAMETER eventtime
    Time to show the events for. Possible options are ONE_WEEK, TWO_WEEKS, THREE_WEEKS, ONE_MONTH,TWO_MONTHS, THREE_MONTHS, SIX_MONTHS

  .PARAMETER EventNewTime
    Time in days to classify events for new. Range 1-3

	.PARAMETER HvServer
    Reference to Horizon View Server to query the virtual machines from. If the value is not passed or null then
    first element from global:DefaultHVServers would be considered in-place of hvServer

	.EXAMPLE
    register-hveventdatabase -server SERVER@domain -database DATABASENAME -username USER@domain -password $password

	.NOTES
		Author                      : Wouter Kursten
		Author email                : wouter@retouw.nl
		Version                     : 1.0

		===Tested Against Environment====
		Horizon View Server Version : 7.4
		PowerCLI Version            : PowerCLI 10
		PowerShell Version          : 5.0
	#>

	[CmdletBinding(
	    SupportsShouldProcess = $false,
	    ConfirmImpact = 'High'
	)]

	param(
    [Parameter(Mandatory = $true)]
    [string]
    $ServerName,

    [Parameter(Mandatory = $false)]
    [string]
    $DatabaseType = "SQLSERVER",

    [Parameter(Mandatory = $false)]
    [int]
    $DatabasePort = 1433,

    [Parameter(Mandatory = $true)]
    [string]
    $DatabaseName,

    [Parameter(Mandatory = $false)]
    [string][ValidateLength(1,6)]
    $TablePrefix,

    [Parameter(Mandatory = $true)]

    [String]
    $UserName,

    [Parameter(Mandatory = $true)]
    [securestring]
    $password,

    [Parameter(Mandatory = $false)]
    [ValidateSet('ONE_WEEK','TWO_WEEKS','THREE_WEEKS','ONE_MONTH','TWO_MONTHS','THREE_MONTHS','SIX_MONTHS')]
    [string]
    $eventtime="TWO_WEEKS",

    [Parameter(Mandatory = $false)]
    [ValidateRange(1,3)]
    [int]
    $eventnewtime = 2,

    [Parameter(Mandatory = $false)]
    $HvServer = $null
  )

    $services = Get-ViewAPIService -hvServer $hvServer
    if ($null -eq $services) {
	    Write-Error "Could not retrieve ViewApi services from connection object"
		  break
    }
  $temppw = [System.Runtime.InteropServices.Marshal]::SecureStringToBSTR($password)
  $PlainevdbPassword = [System.Runtime.InteropServices.Marshal]::PtrToStringAuto($temppw)
  $dbupassword = New-Object VMware.Hv.SecureString
  $enc = [system.Text.Encoding]::UTF8
  $dbupassword.Utf8String = $enc.GetBytes($PlainevdbPassword)

  $eventservice=new-object vmware.hv.eventdatabaseservice
  $eventservicehelper=$eventservice.getEventDatabaseInfoHelper()
  $eventsettings=new-object VMware.Hv.EventDatabaseEventSettings
  $eventdatabase=new-object VMware.Hv.EventDatabaseSettings
  $eventsettings.ShowEventsForTime=$eventtime
  $eventsettings.ClassifyEventsAsNewForDays=$eventnewtime
  $eventdatabase.Server=$ServerName
  $eventdatabase.type=$DatabaseType
  $eventdatabase.port=$DatabasePort
  $eventdatabase.name=$DatabaseName
  $eventdatabase.username=$UserName
  if($TablePrefix){
    $eventdatabase.tablePrefix=$tableprefix
  }

  $eventdatabase.password=$dbupassword
  $eventservicehelper.setDatabase($eventdatabase)
  $eventservicehelper.setsettings($eventsettings)
  $eventservice.update($services, $eventservicehelper)

  [System.gc]::collect()
}

function Get-HVEventDatabase {
	<#
	.Synopsis
	   Retreives information about the configured Event Database

	.DESCRIPTION
    Collects information about the configured event database for aHorizon View pod

	.PARAMETER HvServer
		Reference to Horizon View Server to query the virtual machines from. If the value is not passed or null then
		first element from global:DefaultHVServers would be considered in-place of hvServer

	.EXAMPLE
	   Get-HVEventDatabase

	.NOTES
		Author                      : Wouter Kursten
		Author email                : wouter@retouw.nl
		Version                     : 1.0

		===Tested Against Environment====
		Horizon View Server Version : 7.4
		PowerCLI Version            : PowerCLI 10
		PowerShell Version          : 5.0
	#>

	[CmdletBinding(
	    SupportsShouldProcess = $false,
	    ConfirmImpact = 'High'
	)]

	param(
    [Parameter(Mandatory = $false)]
    $HvServer = $null
	)

  $services = Get-ViewAPIService -hvServer $hvServer
  if ($null -eq $services) {
    Write-Error "Could not retrieve ViewApi services from connection object"
    break
  }

  $eventdatabase=$services.EventDatabase.EventDatabase_Get()
  if ($eventdatabase.eventdatabaseset -eq $False){
      write-output "No Event Database configuration found"
  }
  elseif ($eventdatabase.eventdatabaseset -eq $true){
    $Eventdatabaseoverview=@()
    $Eventdatabaseoverview+=New-Object PSObject -Property @{"Servername" = $eventdatabase.Database.Server;
      "Type" = $eventdatabase.Database.Type;
      "DatabaseName" = $eventdatabase.Database.Name;
      "UserName" = $eventdatabase.Database.UserName;
      "TablePrefix" = $eventdatabase.Database.TablePrefix;
      "ShowEventsForTime" = $eventdatabase.settings.ShowEventsForTime;
      "ClassifyEventsAsNewForDays" = $eventdatabase.settings.ClassifyEventsAsNewForDays;
    } | select-object Servername,Type,DatabaseName,UserName,TablePrefix,ShowEventsForTime,ClassifyEventsAsNewForDays
  }
  return $Eventdatabaseoverview
  [System.gc]::collect()
}

function Clear-HVEventDatabase {
	<#
	.Synopsis
	   Clears configurationof the configured Event Database

	.DESCRIPTION
    Clears configurationof the configured Event Database

	.PARAMETER HvServer
		Reference to Horizon View Server to query the virtual machines from. If the value is not passed or null then
		first element from global:DefaultHVServers would be considered in-place of hvServer

	.EXAMPLE
	   Clear-HVEventDatabase

	.NOTES
		Author                      : Wouter Kursten
		Author email                : wouter@retouw.nl
		Version                     : 1.0

		===Tested Against Environment====
		Horizon View Server Version : 7.4
		PowerCLI Version            : PowerCLI 10
		PowerShell Version          : 5.0
	#>

  [CmdletBinding(
    SupportsShouldProcess = $true,
    ConfirmImpact = 'High')]

	param(
    [Parameter(Mandatory = $false)]
    $HvServer = $null
	)

  PROCESS {

  $services = Get-ViewAPIService -hvServer $hvServer
  if ($null -eq $services) {
    Write-Error "Could not retrieve ViewApi services from connection object"
    break
  }
  if ($pscmdlet.ShouldProcess($($msg))) {
      $services.EventDatabase.EventDatabase_Clear()
  }
  [System.gc]::collect()
  }
}

function Set-HVlicense {
	<#
	.Synopsis
	   Sets or changes the license for Horizon View

	.DESCRIPTION
    Sets or changes the license for Horizon View

  .PARAMETER license
    License key (string)

	.PARAMETER HvServer
		Reference to Horizon View Server to query the virtual machines from. If the value is not passed or null then
		first element from global:DefaultHVServers would be considered in-place of hvServer

	.EXAMPLE
	   Set-HVlicense -license "LICENSE-KEY"
	   Returns information about the sites within a Horizon View Pod Federation.

	.NOTES
		Author                      : Wouter Kursten
		Author email                : wouter@retouw.nl
		Version                     : 1.0

		===Tested Against Environment====
		Horizon View Server Version : 7.4,7.5
		PowerCLI Version            : PowerCLI 10
		PowerShell Version          : 5.0
	#>

	[CmdletBinding(
	    SupportsShouldProcess = $false,
	    ConfirmImpact = 'High'
	)]

	param(
    [Parameter(Mandatory = $true)]
    [string]
    $license,

    [Parameter(Mandatory = $false)]
	  $HvServer = $null
	)


  $services = Get-ViewAPIService -hvServer $hvServer
  if ($null -eq $services) {
	  Write-Error "Could not retrieve ViewApi services from connection object"
		break
  }

  try {
	  $services.license.license_set($license)
  }
	catch {
	  write-error $_.exception message
	  break
	}
  $licenseresult=$services.license.license_get()
  return $licenseresult
  [System.gc]::collect()
}


function Get-HVlicense {
	<#
	.Synopsis
	   Gets the license for Horizon View

	.DESCRIPTION
    Gets the license for Horizon View


	.PARAMETER HvServer
		Reference to Horizon View Server to query the virtual machines from. If the value is not passed or null then
		first element from global:DefaultHVServers would be considered in-place of hvServer

	.EXAMPLE
	   get-hvlicense


	.NOTES
		Author                      : Wouter Kursten
		Author email                : wouter@retouw.nl
		Version                     : 1.0

		===Tested Against Environment====
		Horizon View Server Version : 7.4,7.5
		PowerCLI Version            : PowerCLI 10
		PowerShell Version          : 5.0
	#>

	[CmdletBinding(
	    SupportsShouldProcess = $false,
	    ConfirmImpact = 'High'
	)]

	param(
    [Parameter(Mandatory = $false)]
	  $HvServer = $null
	)


  $services = Get-ViewAPIService -hvServer $hvServer
  if ($null -eq $services) {
	  Write-Error "Could not retrieve ViewApi services from connection object"
		break
  }

	$license=$services.license.license_get()
	return $license
  [System.gc]::collect()
}

function Set-HVInstantCloneMaintenance {
  <#
  .Synopsis
	  Enable or disable instant clone maintanence mode

  .DESCRIPTION
    Toggles a host in instant clone maintanence mode. Specify the VMHost name and enable or disable to toggle.

  .PARAMETER VMHost
	  ESXi Host name to modify the InstantClone.Maintenance attribute

  .PARAMETER Enable
    Enable Instant Clone maintenance mode.

  .PARAMETER Disable
    Disable Instant Clone maintenance mode

  .EXAMPLE
    Set-HvInstantCloneMaintenance -VMHost <hostname> -Enable $true
    Set-HvInstantCloneMaintenance -VMHost <hostname> -Disable $true

  .NOTES
    Author                      : Jack McMichael
    Author email                : @jackwmc4 / jackwmc4@gmail.com
    Version                     : 1.0

    ===Tested Against Environment====
    Horizon View Server Version : 7.6
    PowerCLI Version            : PowerCLI 11
    PowerShell Version          : 5.1
  #>

  [CmdletBinding(
    SupportsShouldProcess = $true,
    ConfirmImpact = 'High')]

	param(
    [Parameter(Mandatory=$true, Position=0)]
    [string]
    $VMHost,

    [Parameter(Mandatory = $false)]
    [switch]
    $Enable,

    [Parameter(Mandatory = $false)]
    [switch]
    $Disable,

    [Parameter(Mandatory = $false)]
    $HvServer = $null
  )

  begin {
    $services = Get-ViewAPIService -hvServer $hvServer
    if ($null -eq $services) {
      Write-Error "Could not retrieve ViewApi services from connection object"
      break
    }
  }

  process {
    if ($Enable) {
      if ((Get-Annotation -Entity (Get-VMHost -Name $VMHost) -CustomAttribute "InstantClone.Maintenance").Value -eq ""){
        Set-Annotation -Entity (Get-VMHost -Name $VMHost) -CustomAttribute "InstantClone.Maintenance" -Value "1" | Out-Null
        Write-Host "Instant Clone Maintenance Mode: Enabling for $VMHost...(This could take some time)"
      }
      while ((Get-Annotation -Entity (Get-VMHost -Name $VMHost) -CustomAttribute "InstantClone.Maintenance").Value -ne "2") {
          Start-Sleep -Seconds 10
      }
    } elseif ($Disable) {
      if (-not (Get-Annotation -Entity (Get-VMHost -Name $VMHost) -CustomAttribute "InstantClone.Maintenance").Value -eq "") {
        Set-Annotation -Entity (Get-VMHost -Name $VMHost) -CustomAttribute "InstantClone.Maintenance" -Value "" | Out-Null
        Write-Host "Instant Clone Maintenance Mode: Disabling for $VMHost"
      }
      Set-VMhost $VMHost -State Connected | Out-Null
    }
    [System.gc]::collect()
  }
}

Function Get-HVApplication {
<#
.Synopsis
   Gets the application information.

.DESCRIPTION
   Gets the application information. This will be useful to find out whether the specified application exists or not. If the application name is not specified, this will lists all the applications in the Pod.

.PARAMETER ApplicationName
   Name of the application.

.PARAMETER HvServer
   View API service object of Connect-HVServer cmdlet.

.PARAMETER FormatList
   Displays the list of the available applications in Table Format if this parameter is set to True.

.EXAMPLE
   Get-HVApplication -ApplicationName 'App1' -HvServer $HvServer
   Queries and returns 'App1' information.

.EXAMPLE
   Get-HVApplication -HvServer $HvServer -FormatList:$True
   Lists all the applications in the Pod.

.OUTPUTS
   Returns the information of the specified application if it specified, else displays all the available applications.

.NOTES
    Author                      : Samiullasha S
    Author email                : ssami@vmware.com
    Version                     : 1.2

    ===Tested Against Environment====
    Horizon View Server Version : 7.8.0
    PowerCLI Version            : PowerCLI 11.1
    PowerShell Version          : 5.0
#>
  param (
    [Parameter(Mandatory = $False, ValueFromPipeline = $True)]
    [string]$ApplicationName = $Null,

    [Parameter(Mandatory = $False, ValueFromPipeline = $True)]
    $HvServer = $Null,

    [Parameter(Mandatory = $False)]
    [string]$FormatList = $False
  )
  begin {
    $services = Get-ViewAPIService -HvServer $HvServer
    if ($null -eq $services) {
        Write-Error "Could not retrieve View API services from connection object."
        break
    }
  }
  process {
    if ($ApplicationName) {
        $eqFilter = Get-HVQueryFilter 'data.name' -Eq $ApplicationName
        $ResourceObjs = Get-HVQueryResult -EntityType ApplicationInfo -Filter $eqFilter -HvServer $HvServer
        if(!$ResourceObjs){Write-host "No application found with specified name: $ApplicationName"; return}
        Write-host "Application found with specified name: $ApplicationName"
        return $ResourceObjs
    }
    $ResourceObjs = Get-HVQueryResult -EntityType ApplicationInfo -HvServer $HvServer
    if ($FormatList -eq $True){
      return $ResourceObjs.data | Format-Table -AutoSize
    } else {
      return $ResourceObjs
    }

  }
  end {
    [System.GC]::Collect()
  }
}

Function Remove-HVApplication {
<#
.Synopsis
   Removes the specified application if exists.

.DESCRIPTION
   Removes the specified application if exists.

.PARAMETER ApplicationName
   Application to be deleted.
   The name of the application must be given that is to be searched for and remove if exists.

.PARAMETER HvServer
   View API service object of Connect-HVServer cmdlet.

.EXAMPLE
   Remove-HVApplication -ApplicationName 'App1' -HvServer $HvServer
   Removes 'App1', if exists.

.OUTPUTS
   Removes the specified application if exists.

.NOTES
    Author                      : Samiullasha S
    Author email                : ssami@vmware.com
    Version                     : 1.2

    ===Tested Against Environment====
    Horizon View Server Version : 7.8.0
    PowerCLI Version            : PowerCLI 11.1
    PowerShell Version          : 5.0
#>
[CmdletBinding(
  SupportsShouldProcess = $true,
  ConfirmImpact = 'High'
)]
param (
    [Parameter(Mandatory = $True, ValueFromPipeline = $True)]
    [string]$ApplicationName,

    [Parameter(Mandatory = $False)]
    $HvServer = $null
  )
  begin {
    $services = Get-ViewAPIService -HvServer $HvServer
    if ($null -eq $services) {
        Write-Error "Could not retrieve View API services from connection object"
        break
    }
  }
  process {
    $App= Get-HVApplication -ApplicationName $ApplicationName -HvServer $HvServer
    if (!$App) {
        Write-Host "Application '$ApplicationName' not found. $_"
        return
    }
    $AppService= New-Object VMware.Hv.ApplicationService
    if ($pscmdlet.ShouldProcess($ApplicationName)) {
      $AppService.Application_Delete($services,$App.Id)
      if ($?) {
          Write-Host "'$ApplicationName' has been successfully removed."
      }
    }
  }
  end {
    [System.GC]::Collect()
  }
}

Function New-HVManualApplication {
<#
.Synopsis
    Creates a Manual Application.

.DESCRIPTION
    Creates Application manually with given parameters.

.PARAMETER HvServer
    View API service object of Connect-HVServer cmdlet.

.PARAMETER Name
    The Application name is the unique identifier used to identify this Application.

.PARAMETER DisplayName
    The display name is the name that users will see when they connect to view client. If the display name is left blank, it defaults to Name.

.PARAMETER Description
    The description is a set of notes about the Application.

.PARAMETER ExecutablePath
    Path to Application executable.

.PARAMETER Version
    Application version.

.PARAMETER Publisher
    Application publisher.

.PARAMETER Enabled
    Indicates if Application is enabled.

.PARAMETER EnablePreLaunch
    Application can be pre-launched if value is true.

.PARAMETER ConnectionServerRestrictions
    Connection server restrictions. This is a list of tags that access to the application is restricted to. Empty/Null list means that the application can be accessed from any connection server.

.PARAMETER CategoryFolderName
    Name of the category folder in the user's OS containing a shortcut to the application. Unset if the application does not belong to a category.

.PARAMETER ClientRestrictions
    Client restrictions to be applied to Application. Currently it is valid for RDSH pools.

.PARAMETER ShortcutLocations
    Locations of the category folder in the user's OS containing a shortcut to the desktop. The value must be set if categoryFolderName is provided.

.PARAMETER MultiSessionMode
    Multi-session mode for the application. An application launched in multi-session mode does not support reconnect behavior when user logs in from a different client instance.

.PARAMETER MaxMultiSessions
    Maximum number of multi-sessions a user can have in this application pool.

.PARAMETER StartFolder
    Starting folder for Application.

.PARAMETER Args
    Parameters to pass to application when launching.

.PARAMETER Farm
    Farm name.

.PARAMETER AutoUpdateFileTypes
    Whether or not the file types supported by this application should be allowed to automatically update to reflect changes reported by the agent.

.PARAMETER AutoUpdateOtherFileTypes
    Whether or not the other file types supported by this application should be allowed to automatically update to reflect changes reported by the agent.

.PARAMETER GlobalApplicationEntitlement
    The name of a Global Application Entitlement to associate this Application pool with.

.EXAMPLE
    New-HVManualApplication -Name 'App1' -DisplayName 'DisplayName' -Description 'ApplicationDescription' -ExecutablePath "PathOfTheExecutable" -Version 'AppVersion' -Publisher 'PublisherName' -Farm 'FarmName'
    Creates a manual application App1 in the farm specified.

.OUTPUTS
    A success message is displayed when done.

.NOTES
    Author                      : Samiullasha S
    Author email                : ssami@vmware.com
    Version                     : 1.0.1

    ===Tested Against Environment====
    Horizon View Server Version : 7.8.0
    PowerCLI Version            : PowerCLI 11.1
    PowerShell Version          : 5.0
#>
  param (
    [Parameter(Mandatory = $False, ValueFromPipeline = $True)]
    [VMware.VimAutomation.HorizonView.Impl.V1.ViewServerImpl]$HvServer,

    [Parameter(Mandatory = $True, ValueFromPipeline = $True)]
    [string][ValidateLength(1,64)]$Name,

    [Parameter(Mandatory = $False, ValueFromPipeline = $True)]
    [String][ValidateLength(1,256)]$DisplayName = $Name,

    [Parameter(Mandatory = $False, ValueFromPipeline = $True)]
    [String][ValidateLength(1,1024)]$Description,

    [Parameter(Mandatory = $True, ValueFromPipeline = $True)]
    [String]$ExecutablePath,

    [Parameter(Mandatory = $False, ValueFromPipeline = $True)]
    [String]$Version,

    [Parameter(Mandatory = $False, ValueFromPipeline = $True)]
    [String]$Publisher,

    [Parameter(Mandatory = $False, ValueFromPipeline = $True)]
    [Boolean]$Enabled = $True,

    [Parameter(Mandatory = $False, ValueFromPipeline = $True)]
    [Boolean]$EnablePreLaunch=$False,

    [Parameter(Mandatory = $False, ValueFromPipeline = $True)]
    [string[]]$ConnectionServerRestrictions,

    [Parameter(Mandatory = $False, ValueFromPipeline = $True, ParameterSetName = 'categoryFolderName')]
    [String][ValidateRange(1,64)]$CategoryFolderName,

    #Below Parameter is for Client restrictions to be applied to Application. Currently it is valid for RDSH pools.
    [Parameter(Mandatory = $False, ValueFromPipeline = $True)]
    [Boolean]$clientRestrictions = $False,

    [Parameter(Mandatory = $False, ValueFromPipeline = $True, ParameterSetName = 'categoryFolderName')]
    [String[]]$ShortcutLocations,

    [Parameter(Mandatory = $False, ValueFromPipeline = $True)]
    [ValidateSet('DISABLED','ENABLED_DEFAULT_OFF','ENABLED_DEFAULT_ON','ENABLED_ENFORCED')]
    [String]$MultiSessionMode = 'DISABLED',

    [Parameter(Mandatory = $False, ValueFromPipeline = $True)]
    [ValidateScript({if(($MultiSessionMode -eq 'ENABLED_DEFAULT_OFF') -or ($MultiSessionMode -eq 'ENABLED_DEFAULT_ON') -or ($MultiSessionMode -eq 'ENABLED_ENFORCED')){$_ -gt 0}})]
    [Int]$MaxMultiSessions,

    #Below parameters are for ExecutionData, moved ExecutablePath, Version and Publisher to above from this.
    [Parameter(Mandatory = $False, ValueFromPipeline = $True)]
    [String]$StartFolder,

    [Parameter(Mandatory = $False, ValueFromPipeline = $True)]
    [String]$Args,

    [Parameter(Mandatory = $True, ValueFromPipeline = $True)]
    [String]$Farm,

    [Parameter(Mandatory = $False, ValueFromPipeline = $True)]
    [Boolean]$AutoUpdateFileTypes = $True,

    [Parameter(Mandatory = $False, ValueFromPipeline = $True)]
    [Boolean]$AutoUpdateOtherFileTypes = $True,

    [Parameter(Mandatory = $False)]
    [String]$GlobalApplicationEntitlement = $null
  )
  begin {
    $services = Get-ViewAPIService -HvServer $HvServer
    if ($null -eq $services) {
        Write-Error "Could not retrieve View API services from connection object"
        break
    }
    $FarmInfo = Get-HVFarm -FarmName $Farm
    if ($null -eq $FarmInfo) {
        Write-Error "Could not find the specified Farm."
        break
    }
    if ( $PSBoundParameters.ContainsKey('GlobalApplicationEntitlement') ) {
      $GlobalApplicationEntitlementInfo = Get-HVGlobalEntitlement -DisplayName $GlobalApplicationEntitlement
      $GlobalApplicationEntitlementId = $GlobalApplicationEntitlementInfo.Id
    } else {
      $GlobalApplicationEntitlementId = $null
    }

  }
  process {
    $App = Get-HVApplication -ApplicationName $Name -HvServer $HvServer
    if ($App) {
        Write-Host "Application already exists with the name : $Name"
        return
    }
    $AppData = New-Object VMware.Hv.ApplicationData -Property @{ 'name' = $Name; 'displayName' = $DisplayName; 'description' = $Description; 'enabled' = $Enabled; 'enableAntiAffinityRules' = $EnableAntiAffinityRules; 'antiAffinityPatterns' = $AntiAffinityPatterns; 'antiAffinityCount' = $AntiAffinityCount; 'enablePreLaunch' = $EnablePreLaunch; 'connectionServerRestrictions' = $ConnectionServerRestrictions; 'categoryFolderName' = $CategoryFolderName; 'clientRestrictions' = $ClientRestrictions; 'shortcutLocations' = $ShortcutLocations; 'globalApplicationEntitlement' = $GlobalApplicationEntitlementId; 'multiSessionMode' = $MultiSessionMode; 'maxMultiSessions' = $MaxMultiSessions }
    $ExecutionData = New-Object VMware.Hv.ApplicationExecutionData -Property @{ 'executablePath' = $ExecutablePath; 'version' = $Version; 'publisher' = $Publisher; 'startFolder' = $StartFolder; 'args' = $Args; 'farm' = $FarmInfo.id; 'autoUpdateFileTypes' = $AutoUpdateFileTypes; 'autoUpdateOtherFileTypes' = $AutoUpdateOtherFileTypes}
    $AppSpec = New-Object VMware.Hv.ApplicationSpec -Property @{ 'data' = $AppData; 'executionData' = $ExecutionData}
    $AppService = New-Object VMware.Hv.ApplicationService
    $AppService.Application_Create($services,$AppSpec)
    if ($?) {
        Write-Host "Application '$Name' created successfully"
        return
    }
    Write-Host "Application creation of '$Name' has failed. $_"
  }
  end {
    [System.GC]::Collect()
  }
}

Function Get-HVPreInstalledApplication {
<#
.Synopsis
   Gets the list of Pre-installed Applications from the RDS Server(s).

.DESCRIPTION
   Gets the list of Pre-installed Applications from the RDS Server(s).

.PARAMETER FarmName
   Name of the Farm on which to discover installed applications.

.PARAMETER HvServer
   View API service object of Connect-HVServer cmdlet.

.EXAMPLE
   Get-HVPreInstalledApplication -FarmName 'Farm1' -HvServer $HvServer
   Gets the list of Applications present in 'Farm1', if exists.

.OUTPUTS
   Gets the list of Applications from the specified Farm if exists.

.NOTES
    Author                      : Samiullasha S
    Author email                : ssami@vmware.com
    Version                     : 1.0

    ===Tested Against Environment====
    Horizon View Server Version : 7.8.0
    PowerCLI Version            : PowerCLI 11.1
    PowerShell Version          : 5.0
#>
  param (
    [Parameter(Mandatory = $True, ValueFromPipeline = $True)]
    [String][ValidateLength(1,64)]$FarmName,

    [Parameter(Mandatory = $False)]
    $HvServer = $null
  )
  begin {
    $services = Get-ViewAPIService -HvServer $HvServer
    if ($null -eq $services) {
        Write-Error "Could not retrieve ViewApi services from connection object"
        break
    }
    $Farm = Get-HVFarm -FarmName $FarmName
    if($null -eq $Farm) {
        Write-Error "Could not find the specified Farm."
        break
    }
  }
  process {
    $FarmService = New-Object VMware.Hv.FarmService
    $Data = $FarmService.Farm_DiscoverInstalledApplications($services,$Farm.Id)
    return $Data
  }
  end {
    [System.GC]::Collect()
  }
}

Function New-HVPreInstalledApplication {
<#
.Synopsis
   Creates a application pool from Pre-installed applications on RDS Server(s).

.DESCRIPTION
   Creates a application pool from Pre-installed applications on RDS Server(s).

.PARAMETER HvServer
    View API service object of Connect-HVServer cmdlet.

.PARAMETER ApplicationName
    The Application name to search within the Farm for. This should match the output of (Get-HVPreinstalledApplication).Name

.PARAMETER ApplicationID
    The unique identifier for this application. The ApplicationID can only contain alphanumeric characters, dashes, and underscores. If ApplicationID is not specified, it will be set to match the ApplicationName, with the spaces converted to underscore (_).

.PARAMETER DisplayName
    The display name is the name that users will see when they connect with the Horizon Client. If the display name is left blank, it defaults to ApplicationName.

.PARAMETER FarmName
    Farm name.

.PARAMETER EnablePreLaunch
    Application can be pre-launched if value is true.

.PARAMETER ConnectionServerRestrictions
    Connection server restrictions. This is a list of tags that access to the application is restricted to. Empty/Null list means that the application can be accessed from any connection server.

.PARAMETER CategoryFolderName
    Name of the category folder in the user's OS containing a shortcut to the application. Unset if the application does not belong to a category.

.PARAMETER ClientRestrictions
    Client restrictions to be applied to Application. Currently it is valid for RDSH pools.

.EXAMPLE
    New-HVPreInstalledApplication -ApplicationName 'App1' -DisplayName 'DisplayName' -FarmName 'FarmName'
    Creates a application App1 from the farm specified.

.EXAMPLE
    New-HVPreInstalledApplication -ApplicationName 'App2' -FarmName FarmManual -EnablePreLaunch $True
    Creates a application App2 from the farm specified and the PreLaunch option will be enabled.

.EXAMPLE
    New-HVPreInstalledApplication -ApplicationName 'Excel 2016' -ApplicationID 'Excel-2016' -DisplayName 'Excel' -FarmName 'RDS-FARM-01'
    Creates an application, Excel-2016, from the farm RDS-FARM-01. The application will display as 'Excel' to the end user.

.OUTPUTS
    A success message is displayed when done.

.NOTES
    Author                      : Samiullasha S
    Author email                : ssami@vmware.com
    Version                     : 1.0

    ===Tested Against Environment====
    Horizon View Server Version : 7.8.0
    PowerCLI Version            : PowerCLI 11.1
    PowerShell Version          : 5.0
#>
  param (
    [Parameter(Mandatory = $True, ValueFromPipeline = $True)]
    [string][ValidateLength(1,64)]$ApplicationName,

    [Parameter(Mandatory = $False, ValueFromPipeline = $True)]
    [string][ValidateLength(1,64)][ValidatePattern('(?#Alphanumeric, dashes,and underscores)^[a-zA-Z\d-_]+$')]$ApplicationID = $($ApplicationName -replace " ","_"),

    [Parameter(Mandatory = $False, ValueFromPipeline = $True)]
    [String][ValidateLength(1,256)]$DisplayName = $ApplicationName,

    [Parameter(Mandatory = $True, ValueFromPipeline = $True)]
    [String][ValidateLength(1,64)]$FarmName,

    [Parameter(Mandatory = $False, ValueFromPipeline = $True)]
    [Boolean]$EnablePreLaunch=$False,

    [Parameter(Mandatory = $False, ValueFromPipeline = $True)]
    [string[]]$ConnectionServerRestrictions,

    [Parameter(Mandatory = $False, ValueFromPipeline = $True,ParameterSetName = 'categoryFolderName')]
    [String][ValidateRange(1,64)]$CategoryFolderName,

    [Parameter(Mandatory = $False, ValueFromPipeline = $True)]
    [Boolean]$clientRestrictions = $False,

    [Parameter(Mandatory = $False)]
    $HvServer = $null
  )
  begin {
    $services = Get-ViewAPIService -HvServer $HvServer
    if ($null -eq $services) {
        Write-Error "Could not retrieve ViewApi services from connection object"
        break
    }
    $FarmInfo = Get-HVFarm -FarmName $FarmName
    if($null -eq $FarmInfo) {
        Write-Error "Could not find the specified Farm $FarmName."
        break
    }
  }
  process {
    #Validate the Application name uniqueness with existing applications.
    $ResourceObjs = Get-HVApplication -HvServer $HvServer
    foreach($App in ($ResourceObjs.Data.Name)) {
        if($App -eq $ApplicationID) {
            Write-Error "$ApplicationID already exists in the Application Pool. Use the -ApplicationID parameter to specify a unique ID."
            return
        }
    }
    #Validate the application name uniqueness with Desktops.
    $DesktopSummary = Get-HVQueryResult -EntityType DesktopSummaryView -HvServer $hvserver
    foreach($App in $DesktopSummary) {
        if($App.DesktopSummaryData.Data.Name -eq $ApplicationID) {
            Write-Error "$ApplicationID already exists in the Desktop Pool. Use the -ApplicationID parameter to specify a unique ID."
            return
        }
    }
    #get all the applications installed in RDS Server(s).
    $AppsInRDS = Get-HVPreinstalledApplication -FarmName $FarmName
    $AppFoundInRDS = $False
    foreach($App in ($AppsInRDS)) {
        if($($App.name) -eq ($ApplicationName)) {
            $AppFoundInRDS = $True
            $ApplicationData = New-Object VMware.Hv.ApplicationData -Property @{ 'Name' = $ApplicationID;
                            'DisplayName' = $DisplayName;
                            'EnablePreLaunch' = $EnablePreLaunch;
                            'ConnectionServerRestrictions' = $ConnectionServerRestrictions;
                            'CategoryFolderName' = $CategoryFolderName;
                            'ClientRestrictions' = $ClientRestrictions }
            $ExecutionData = New-object VMware.Hv.ApplicationExecutionData -Property @{ 'ExecutablePath' = $App.ExecutionData.ExecutablePath;
                            'Version' = $App.ExecutionData.Version;
                            'Publisher' = $App.ExecutionData.Publisher;
                            'Args' = $App.ExecutionData.Args;
                            'StartFolder' = $App.ExecutionData.StartFolder;
                            'Farm' = $FarmInfo.Id;
                            'AutoUpdateFileTypes' = $App.ExecutionData.AutoUpdateFileTypes;
                            'AutoUpdateOtherFileTypes' = $App.executionData.AutoUpdateOtherFileTypes }
            $ApplicationSpec = New-Object VMware.Hv.ApplicationSpec -Property @{ 'Data' = $ApplicationData; 'ExecutionData' = $ExecutionData}
            $AppService = New-Object VMware.Hv.ApplicationService
            $AppService.Application_Create($services,$ApplicationSpec)
            if($?) {
                Write-Host "Application '$ApplicationId' created successfully"
                return
            }
            Write-Host "Failed to create Application '$ApplicationId'. $_ "
            return
        }
    }
    if ($AppFoundInRDS -eq $False) {
        Write-Error "$ApplicationName does not exist in any of the RDS Server(s) belongs to the Farm $FarmName. Run (Get-HVPreinstalledApplication -FarmName $FarmName).Name to see a list of valid, preinstalled applications."
    }
  }
  end {
    [System.GC]::Collect()
  }
}

function Set-HVApplication {
<#
.Synopsis
    Updates settings for an existing Application Pool.

.DESCRIPTION
    Updates settings for an existing Application Pool. It does not update the Application Icon. See Set-HVApplicationIcon for a function to update icons. This function specifically targets ApplicationInfo.Data and Application.ExecutionData properties.

.PARAMETER HvServer
    View API service object of Connect-HVServer cmdlet.

.PARAMETER Name
    The Application name is the unique identifier used to identify this Application. This cannot be updated but is used to specify which application should be updated.

.PARAMETER DisplayName
    The display name is the name that users will see when they connect to view client. If the display name is left blank, it defaults to Name.

.PARAMETER Description
    The description is a set of notes about the Application.

.PARAMETER GlobalApplicationEntitlement
    The name of a Global Application Entitlement to associate this Application pool with.

.PARAMETER ExecutablePath
    Path to Application executable.

.PARAMETER Version
    Application version.

.PARAMETER Publisher
    Application publisher.

.PARAMETER Enabled
    Indicates if Application is enabled.

.PARAMETER EnablePreLaunch
    Application can be pre-launched if value is true.

.PARAMETER ConnectionServerRestrictions
    Connection server restrictions. This is a list of tags that access to the application is restricted to. Empty/Null list means that the application can be accessed from any connection server.

.PARAMETER CategoryFolderName
    Name of the category folder in the user's OS containing a shortcut to the application. Unset if the application does not belong to a category.

.PARAMETER ClientRestrictions
    Client restrictions to be applied to Application. Currently it is valid for RDSH pools.

.PARAMETER ShortcutLocations
    Locations of the category folder in the user's OS containing a shortcut to the desktop. The value must be set if categoryFolderName is provided.

.PARAMETER StartFolder
    Starting folder for Application.

.PARAMETER Args
    Parameters to pass to application when launching.

.PARAMETER Farm
    Farm name.

.PARAMETER AutoUpdateFileTypes
    Whether or not the file types supported by this application should be allowed to automatically update to reflect changes reported by the agent.

.PARAMETER AutoUpdateOtherFileTypes
    Whether or not the other file types supported by this application should be allowed to automatically update to reflect changes reported by the agent.

.PARAMETER GlobalApplicationEntitlement
    Specify the Display Name of a Global Application Entitlement to add this Application Pool to.

.EXAMPLE
    New-HVManualApplication -Name 'App1' -DisplayName 'DisplayName' -Description 'ApplicationDescription' -ExecutablePath "PathOfTheExecutable" -Version 'AppVersion' -Publisher 'PublisherName' -Farm 'FarmName'
    Creates a manual application App1 in the farm specified.

.OUTPUTS
    A success message is displayed when done.

.NOTES
    Author                      : Matt Frey
    Author email                : mfrey@vmware.com
    Version                     : 1.0

    ===Tested Against Environment====
    Horizon View Server Version : 7.8.0
    PowerCLI Version            : PowerCLI 11.1
    PowerShell Version          : 5.1
#>
param (
  [Parameter(Mandatory = $False, ValueFromPipeline = $True)]
  [VMware.VimAutomation.HorizonView.Impl.V1.ViewServerImpl]$HvServer,

  [Parameter(Mandatory = $True, ValueFromPipeline = $True, Position = 0)]
  [string][ValidateLength(1,64)]$Name,

  [Parameter(Mandatory = $False, ValueFromPipeline = $True)]
  [String][ValidateLength(1,256)]$DisplayName = $Name,

  [Parameter(Mandatory = $False, ValueFromPipeline = $True)]
  [String][ValidateLength(1,1024)]$Description,

  [Parameter(Mandatory = $False, ValueFromPipeline = $True)]
  [String]$ExecutablePath,

  [Parameter(Mandatory = $False, ValueFromPipeline = $True)]
  [String]$Version,

  [Parameter(Mandatory = $False, ValueFromPipeline = $True)]
  [String]$Publisher,

  [Parameter(Mandatory = $False, ValueFromPipeline = $True)]
  [Boolean]$Enabled = $True,

  [Parameter(Mandatory = $False, ValueFromPipeline = $True)]
  [Boolean]$EnablePreLaunch=$False,

  [Parameter(Mandatory = $False, ValueFromPipeline = $True)]
  [string[]]$ConnectionServerRestrictions,

  [Parameter(Mandatory = $False, ValueFromPipeline = $True, ParameterSetName = 'categoryFolderName')]
  [String][ValidateRange(1,64)]$CategoryFolderName,

  #Below Parameter is for Client restrictions to be applied to Application. Currently it is valid for RDSH pools.
  [Parameter(Mandatory = $False, ValueFromPipeline = $True)]
  [Boolean]$clientRestrictions = $False,

  [Parameter(Mandatory = $False, ValueFromPipeline = $True, ParameterSetName = 'categoryFolderName')]
  [String[]]$ShortcutLocations,

  #Below parameters are for ExecutionData, moved ExecutablePath, Version and Publisher to above from this.
  [Parameter(Mandatory = $False, ValueFromPipeline = $True)]
  [String]$StartFolder,

  [Parameter(Mandatory = $False, ValueFromPipeline = $True)]
  [String]$Args,

  [Parameter(Mandatory = $False, ValueFromPipeline = $True)]
  [Boolean]$AutoUpdateFileTypes = $True,

  [Parameter(Mandatory = $False, ValueFromPipeline = $True)]
  [Boolean]$AutoUpdateOtherFileTypes = $True,

  [Parameter(Mandatory = $False)]
  [String]$GlobalApplicationEntitlement = $null,

  [Parameter(Mandatory = $false)]
  [switch]$clearGlobalEntitlement
)
  begin {
    $services = Get-ViewAPIService -HvServer $HvServer
    if ($null -eq $services) {
        Write-Error "Could not retrieve View API services from connection object"
        break
    }
  }
  process {
    $App = Get-HVApplication -ApplicationName $Name -HvServer $HvServer
    if (!$App) {
        Write-Error "Application $App not found. Please check the syntax or spelling."
        return
    }

    $updates = @()
    if ($PSBoundParameters.ContainsKey("DisplayName")) {
    	$updates += Get-MapEntry -key 'data.displayName' -value $DisplayName
    }
    if ($PSBoundParameters.ContainsKey("Description")) {
    	$updates += Get-MapEntry -key 'data.description' -value $Description
    }
    if ($PSBoundParameters.ContainsKey("Enabled")) {
      $updates += Get-MapEntry -key 'data.enabled' -value $Enabled
    }
    if ($PSBoundParameters.ContainsKey("EnableAntiAffinityRules")) {
    	$updates += Get-MapEntry -key 'data.enableAntiAffinityRules' -value $EnableAntiAffinityRules
    }
    if ($PSBoundParameters.ContainsKey("EnableAntiAffinityPatterns")) {
    	$updates += Get-MapEntry -key 'data.enableAntiAffinityPatterns' -value $EnableAntiAffinityPatterns
    }
    if ($PSBoundParameters.ContainsKey("EnableAntiAffinityCount")) {
    	$updates += Get-MapEntry -key 'data.enableAntiAffinityCount' -value $EnableAntiAffinityCount
    }
    if ($PSBoundParameters.ContainsKey("EnablePreLaunch")) {
    	$updates += Get-MapEntry -key 'data.enablePreLaunch' -value $EnablePreLaunch
    }
    if ($PSBoundParameters.ContainsKey("ConnectionServerRestrictions")) {
    	$updates += Get-MapEntry -key 'data.connectionServerRestrictions' -value $ConnectionServerRestrictions
    }
    if ($PSBoundParameters.ContainsKey("EnableAntiAffinityRules")) {
    	$updates += Get-MapEntry -key 'data.enableAntiAffinityRules' -value $EnableAntiAffinityRules
    }
    if ($PSBoundParameters.ContainsKey("CategoryFolderName")) {
    	$updates += Get-MapEntry -key 'data.categoryFolderName' -value $CategoryFolderName
    }
    if ($PSBoundParameters.ContainsKey("ClientRestrictions")) {
    	$updates += Get-MapEntry -key 'data.clientRestrictions' -value $ClientRestrictions
    }
    if ($PSBoundParameters.ContainsKey("ShortcutLocations")) {
    	$updates += Get-MapEntry -key 'data.shortcutLocations' -value $ShortcutLocations
    }
    if ($PSBoundParameters.ContainsKey("GlobalApplicationEntitlement")) {
      $GlobalApplicationEntitlementInfo = Get-HVGlobalEntitlement -DisplayName $GlobalApplicationEntitlement
      $GlobalApplicationEntitlementId = $GlobalApplicationEntitlementInfo.Id
    	$updates += Get-MapEntry -key 'data.globalApplicationEntitlement' -value $GlobalApplicationEntitlementId
    }

    if ($PSBoundParameters.ContainsKey("ExecutablePath")) {
      $updates += Get-MapEntry -key 'executionData.executablePath' -value $ExecutablePath
    }
    if ($PSBoundParameters.ContainsKey("Version")) {
    	$updates += Get-MapEntry -key 'executionData.version' -value $Version
    }
    if ($PSBoundParameters.ContainsKey("Publisher")) {
    	$updates += Get-MapEntry -key 'executionData.publisher' -value $Publisher
    }
    if ($PSBoundParameters.ContainsKey("StartFolder")) {
    	$updates += Get-MapEntry -key 'executionData.startFolder' -value $StartFolder
    }
    if ($PSBoundParameters.ContainsKey("Args")) {
    	$updates += Get-MapEntry -key 'executionData.args' -value $Args
    }
    if ($PSBoundParameters.ContainsKey("AutoUpdateFileTypes")) {
    	$updates += Get-MapEntry -key 'executionData.autoUpdateFileTypes' -value $AutoUpdateFileTypes
    }
    if ($PSBoundParameters.ContainsKey("AutoUpdateOtherFileTypes")) {
    	$updates += Get-MapEntry -key 'executionData.autoUpdateOtherFileTypes' -value $AutoUpdateOtherFileTypes
    }

    if ($clearGlobalEntitlement) {
    	$update = New-Object VMware.Hv.MapEntry
    	$update.key = 'data.globalApplicationEntitlement'
    	$updates += $update
    }

    $AppService = New-Object VMware.Hv.ApplicationService
    $AppService.Application_Update($services,$App.Id,$updates)
    if ($?) {
        Write-Host "Application '$Name' updated successfully"
        return
    }
    Write-Host "Application update to '$Name' has failed. $_"
  }
  end {
    [System.GC]::Collect()
  }
}

Function Get-HVNetworkLabels {

<#
.Synopsis
    Returns all network labels on the given host or cluster that may be suitable for configuration with a desktop's network interface card.

.DESCRIPTION
    Returns all network labels on the given host or cluster that may be suitable for configuration with a desktop's network interface card. This includes both standard and distributed virtual switch network label types.

.PARAMETER HostOrClusterID
    The cluster id.

.EXAMPLE
    Get-HVNetworkLabels -HostOrClusterId $farmSpecObj.AutomatedFarmSpec.VirtualCenterProvisioningSettings.VirtualCenterProvisioningData.hostOrCluster
    Get-HVNetworkLabels -HostOrClusterId $farmSpecObj.AutomatedFarmSpec.VirtualCenterProvisioningSettings.VirtualCenterProvisioningData.hostOrCluster | Where-Object {$_.Name -eq $NetworkLabelName}
    (Get-HVNetworkLabels -HostOrClusterId $farmSpecObj.AutomatedFarmSpec.VirtualCenterProvisioningSettings.VirtualCenterProvisioningData.hostOrCluster | Where-Object {$_.Name -eq $NetworkLabelName}).ID

.OUTPUTS
    An array of NetworkLabelInfos.

.NOTES
    Author                      : Rico Roodenburg
    Author email                : r.roodenburg@outlook.com
    Version                     : 1.0

    ===Tested Against Environment====
    Horizon View Server Version : 2012 (8.1)
    PowerCLI Version            : PowerCLI 12.0
    PowerShell Version          : 5.1
#>

    param (

        [Parameter(Mandatory = $True) ]
        [VMware.Hv.HostOrClusterId]$HostOrClusterID

    )

    Begin {

        $services = Get-ViewAPIService -HvServer $HvServer
        if ($null -eq $services) {
            Write-Error "Could not retrieve View API services from connection object"
            break
        }

    }

    Process {

        $NetworkLabelSpec = new-object vmware.hv.NetworkLabelSpec
        $NetworkLabelSpec.HostOrClusterId = $HostOrClusterID
        $NetworkLabelService = New-Object VMware.Hv.NetworkLabelService
        $NetworkLabels = $NetworkLabelService.NetworkLabel_ListByNetworkLabelSpec($Services,$NetworkLabelSpec)

        $Result = $Networklabels | Foreach {
            [pscustomobject]@{'Id'=$_.Id;'Name'=$_.Data.Name;'SwitchType'=$_.Data.SwitchType;'LabelType'=$_.Data.LabelType;'MaxNumOfPort'=$_.Data.MaxNumOfPort;'AvailablePorts'=$_.Data.AvailablePorts;'NotConfiguredOnAllHosts'=$_.Data.IncompatibleReasons.NotConfiguredOnAllHosts;'DvsUplinkPort'=$_.Data.IncompatibleReasons.DvsUplinkPort;'VmcNetworks'=$_.Data.IncompatibleReasons.VmcNetworks}
        }

        Return $Result

    }
}

function Get-HVSyslog {
<#
  .SYNOPSIS
    This function is used to get the current syslog server settings

  .DESCRIPTION
    Queries HVServer for the current syslog settings

  .PARAMETER HvServer
    Reference to Horizon View Server to query. If the value is not passed or null then
    first element from global:DefaultHVServers would be considered inplace of hvServer

  .EXAMPLE
    Get-HVSyslog
    Returns both file and UDP syslog settings

  .EXAMPLE
    Get-HVSyslog | Select -ExpandProperty udpData
    Displays the udpData settings

  .OUTPUTS
    Returns object of type VMware.Hv.SyslogInfo which contains objects for both file and UDP Syslog settgs

.NOTES
    Author : Mark Elvers <mark.elvers@tunbury.org>

#>

  [CmdletBinding()]

  param(
    [Parameter(Mandatory = $false)]
    $HvServer = $null
  )

  begin {
    $services = Get-ViewAPIService -hvServer $hvServer
    if ($null -eq $services) {
      Write-Error "Could not retrieve ViewApi services from connection object"
      break
    }
  }

  process {
    $syslog_helper = New-Object VMware.Hv.SyslogService
    $syslog_helper.Syslog_Get($services)
  }

  end {
    [System.gc]::collect()
  }
}

function Set-HVSyslog {
<#
  .SYNOPSIS
    This function is used to set the syslog servers

  .DESCRIPTION
    Set-HVSyslog sets the syslog servers used by Horizon and enables/disables logging.

  .PARAMETER servers
    Array of servers to be used in the format <ip>:<port>

  .PARAMETER enabled
    Switch paramter to enabled or disable syslog data.  Defaults to enabled.

  .EXAMPLE
    Set-HVSyslog -servers "1.2.3.4:514"
    Set the default HV server to use syslog server 1.2.3.4 on port 514 and turn on logging.

  .EXAMPLE
    Set-HVSyslog -servers "1.2.3.4:514", "5.6.7.8:514" -enabled:$true -hvserver vcs
    Set the syslog servers to 1.2.3.4:514 and 5.6.7.8:514 on Horizon View server vcs and specifically enables logging.

  .EXAMPLE
    Set-HVSyslog -enabled:$false -hvserver vcs
    Disables syslog logging on server vcs without changing the currently defined syslog servers.
    Note you can not see whether it's enabled or diabled in the GUI.  Use Get-HVSyslog instead.

  .EXAMPLE
    Set-HVSyslog -enabled -hvserver vcs
    Enables syslog logging on server vcs without changing the currently defined syslog servers.

  .OUTPUTS
    None

  .NOTES
    Author : Mark Elvers <mark.elvers@tunbury.org>

#>

  [CmdletBinding()]

  param(
    [Parameter(Mandatory = $false)]
    [string[]]
    $servers = @(),

    [Parameter(Mandatory = $false)]
    [switch]$enabled = $true,

    [Parameter(Mandatory = $false)]
    $HvServer = $null
  )

  begin {
    $services = Get-ViewAPIService -hvServer $hvServer
    if ($null -eq $services) {
      Write-Error "Could not retrieve ViewApi services from connection object"
      break
    }
  }

  process {
    $syslog_helper = New-Object VMware.Hv.SyslogService
    $updates = @()
    $updates += Get-MapEntry -key 'udpData.enabled' -value ([bool]$enabled)
    if ($servers.count) {
      $updates += Get-MapEntry -key 'udpData.networkAddresses' -value $servers
    }
    $syslog_helper.Syslog_Update($services, $updates)
  }

  end {
    [System.gc]::collect()
  }
}

# Object related
Export-ModuleMember -Function Get-HVMachine, Get-HVMachineSummary, Get-HVQueryResult, Get-HVQueryFilter, Get-HVInternalName
# RDS Farm related
Export-ModuleMember -Function Get-HVFarmSummary, Start-HVFarm, Start-HVPool, New-HVFarm, Remove-HVFarm, Get-HVFarm, Set-HVFarm, Add-HVRDSServer
# Desktop Pool related
Export-ModuleMember -Function Get-HVPoolSummary, New-HVPool, Remove-HVPool, Get-HVPool, Set-HVPool, Get-HVPoolSpec, Add-HVDesktop
# Application Pool related
Export-ModuleMember -Function Get-HVApplication, Remove-HVApplication, New-HVManualApplication, Get-HVPreInstalledApplication, New-HVPreInstalledApplication, Set-HVApplication
# Entitlement related
Export-ModuleMember -Function New-HVEntitlement,Get-HVEntitlement,Remove-HVEntitlement
Export-ModuleMember -Function Set-HVMachine, Reset-HVMachine, Restart-HVMachine, Rebuild-HVMachine, Remove-HVMachine
# Cloud Pod Architecture related
Export-ModuleMember -Function New-HVGlobalEntitlement, Remove-HVGlobalEntitlement, Get-HVGlobalEntitlement, Set-HVGlobalEntitlement, New-HVPodFederation, Remove-HVPodFederation, Get-HVPodFederation, Set-HVPodFederation
Export-ModuleMember -Function Get-HVSite, New-HVSite, New-HVHomeSite, Remove-HVSite, Get-HVHomeSite, Set-HVSite, Register-HVPod, Unregister-HVPod
# Published App related
Export-ModuleMember -Function Get-HVGlobalSettings, Set-HVApplicationIcon, Remove-HVApplicationIcon, Set-HVGlobalSettings
Export-ModuleMember -Function Get-HVResourceStructure, Get-HVLocalSession, Get-HVGlobalSession
# Event Database related
Export-ModuleMember -Function Get-HVEventDatabase, Set-HVEventDatabase, Clear-HVEventDatabase, Get-HVEvent, Connect-HVEvent, Disconnect-HVEvent
# vCenter Server related
Export-ModuleMember -Function Get-HVvCenterServer, Get-HVvCenterServerHealth
# Misc/other related
Export-ModuleMember -Function Get-HVlicense, Set-HVlicense, Get-HVHealth, Set-HVInstantCloneMaintenance, Get-HVBaseImageVM, Get-HVBaseImageVMSnapshot, Set-HVSyslog, Get-HVSyslog