#!/usr/bin/env bash
# powerwall - CLI commands to control VM guest power

source /opt/idssys/defaults/colors.inc
source /opt/idssys/defaults/default.inc
source /opt/idssys/dsmon/config.settings.inc

action="$1"

RUN(){
	if [ "${SERVERMON_ID}" != "" ]; then

		if [ "${1}" = "hdd" ]; then
			DRIVEINFO=`df -BM | grep -vE '^Filesystem|tmpfs|cdrom|@|ram|loop|udev|veeamimage' | awk '{ print $1 " " $2 " " $4 }'`
			DRIVEINFO=(${DRIVEINFO})
			NUMDRIVES=$((${#DRIVEINFO[@]} / 3))

			DRIVE_INFO=()

			for ((i = 0 ; i <= $((${NUMDRIVES}-1)) ; i++)); do
				ii=$((${i}*3))
				ia=${DRIVEINFO[${ii}]}
				ib=$(bc <<< "scale=2; ${DRIVEINFO[$((${ii}+1))]//M/}/1024")
				ic=$(bc <<< "scale=2; ${DRIVEINFO[$((${ii}+2))]//M/}/1024")
				ia=${ia//\/dev\/mapper\//}
				ia=${ia//\/dev\//}
			
				if [ "${ia}" = "sda1" ] && [ ${DRIVEINFO[$((${ii}+1))]//M/} -lt 1024 ]; then
					systempartition=true
				elif [ "${ia}" = "sda2" ] && [ ${DRIVEINFO[$((${ii}+1))]//M/} -lt 1024 ]; then
					systempartition=true
				elif [ "${ia}" = "shm" ] && [ ${DRIVEINFO[$((${ii}+1))]//M/} -lt 1024 ]; then
					systempartition=true
				elif [ "${ia}" = "nvme0n1p1" ] && [ ${DRIVEINFO[$((${ii}+1))]//M/} -lt 1024 ]; then
					systempartition=true
				elif [ "${ia}" = "mmcblk0p1" ] && [ ${DRIVEINFO[$((${ii}+1))]//M/} -lt 1024 ]; then
					systempartition=true
				elif [ "${ia}" != "overlay" ]; then
					#echo "${ia};${ib};${ic}"
					DRIVE_INFO+=("${ia};${ib};${ic}")
				
				fi
			
			done
		
			QRY="USE servermonitor; INSERT INTO sysinfo (\`host\`, \`entry\`, \`value\`) VALUES ('${SERVERMON_ID}','hdd','${DRIVE_INFO[@]}');"
			MYSQL_PWD="sysmoninsert" mysql -h mysqldb.scity.us -P 6033 -u sysmoninsert -e "${QRY}"
		
		elif [ "${1}" = "sys" ]; then
		
			MEMORY=$(free -m | awk 'NR==2{printf "%.2f\t\t", $3*100/$2 }')
			CPU=$(top -bn1 | grep load | awk '{printf "%.2f\t\t\n", $(NF-2)}')
			QRY="USE servermonitor; INSERT INTO sysinfo (\`host\`, \`entry\`, \`value\`) VALUES ('${SERVERMON_ID}','sys','${CPU//		/};${MEMORY}');"
			MYSQL_PWD="sysmoninsert" mysql -h mysqldb.scity.us -P 3306 -u sysmoninsert -e "${QRY}"
		fi
	
		SERVERHOSTNAME=(`hostname`)
		SERVERIP=(`hostname -I`)
		SERVERIPS=''
		for nip in "${SERVERIP[@]}"; do
			if [[ "${nip}" == *"."* ]]; then
				if [ "${SERVERIPS}" = "" ]; then
					SERVERIPS=${nip} 
				else
					SERVERIPS=${SERVERIPS}";"${nip} 
				fi
			fi
		done
	
		thresholdlog=()
		for KEY in "${!THRESHOLD[@]}"; do
			thresholdlog+=("${KEY}:${THRESHOLD[$KEY]}")
		done

		QRY="USE servermonitor; UPDATE hosts SET ip='${SERVERIPS// /}',hostname='${SERVERHOSTNAME}',limits='${thresholdlog[@]}' WHERE id='${SERVERMON_ID}';"
		mysql -h mysqldb.scity.us -P 3306 --user=sysmoninsert --password=sysmoninsert -e "${QRY}"
	

	fi
}

CHECK(){
	start=`date +%s`

	declare -A host_ip
	declare -A host_name
	declare -A host_limits
	declare -A host_ids
	declare -a hostnames_sort
	
	while read hostid hostname hostip hostlimits; do
		if [ "$hostid" != "id" ]; then
			hostip=$(echo $hostip | cut -d ";" -f1)
			# echo "$hostid  - $hostip - $hostname - $hostlimits"
			host_ip[${hostid}]=$hostip
			host_name[${hostid}]=$hostname
			host_limits[${hostid}]=$hostlimits
			host_ids[$hostname]=$hostid
			hostnames_sort+=("$hostname")
		fi
	done <<< $(MYSQL_PWD="sysmoninsert" mysql -h mysqldb.scity.us -P 3306 -u sysmoninsert -e "SELECT id,host,ip,limits FROM servermonitor.hosts WHERE disabled=0")
	
	IFS=$'\n' hostnames_sort=($(sort <<<"${hostnames_sort[*]}")); unset IFS
	
	#for hostid in "${!host_ip[@]}"; do
	for hostname in "${hostnames_sort[@]}"; do
		hostid=${host_ids[$hostname]}
		echo -e "${idsST[Bold]}"; DIVIDER false "" 100
		echo -e "${idsCL[LightCyan]} ${host_name[$hostid]} - Drive Space Check${idsCL[Default]}"
		DIVIDER false "" 100;
		
		c=0; cw=40; spcA=''
		spc1=`expr ${cw} - 5`
		until [ $c = ${spc1} ]; do spcA="${spcA} "; c=`expr $c + 1`; done

		c=0; cw=10; spcB=''
		spc2=`expr ${cw} - 4`
		until [ $c = ${spc2} ]; do spcB="${spcB} "; c=`expr $c + 1`; done

		c=0; cw=10; spcC=''
		spc3=`expr ${cw} - 5`
		until [ $c = ${spc3} ]; do spcC="${spcC} "; c=`expr $c + 1`; done

		c=0; cw=12; spcD=''
		spc4=`expr ${cw} - 1`
		until [ $c = ${spc4} ]; do spcD="${spcD} "; c=`expr $c + 1`; done
		
		echo -e "${idsST[Reset]}${idsCL[White]} DRIVE${spcA}  FREE GB${spcB}FREE %${spcC}TOTAL GB${spcD}WARN / CRIT${idsCL[Default]}"

		checkhost=$(CHECK_HOST ${host_ip[$hostid]})
		if [ "${checkhost}" != "false" ]; then
			declare -A host_limits_tmp
			hostlimits=(${host_limits[${hostid}]})
			for hl in ${hostlimits[@]}; do
				hlname=$(echo $hl | cut -d ":" -f1)
				hllim=$(echo $hl | cut -d ":" -f2)
				host_limits_tmp[$hlname]=$hllim
			done
			
			DRIVEINFO=$(ssh root@${host_ip[$hostid]} df -BM | grep -vE '^Filesystem|tmpfs|cdrom|@|ram|loop|udev|veeamimage|nvme|localhost|shm|mmcblk|overlay|-volume|Music|media-data|Software' | awk '{ print $1 " " $2 " " $4 }')
			DRIVEINFO=(${DRIVEINFO})

			# for x in "${!DRIVEINFO[@]}"; do printf "[%s]=%s\n" "$x" "${DRIVEINFO[$x]}" ; done

			NUMDRIVES=$((${#DRIVEINFO[@]} / 3))
			declare -A DRIVEINFO_TOT DRIVEINFO_FREE DRIVEINFO_FREEPER
			declare -a DRIVES

			for ((i = 0 ; i <= $((${NUMDRIVES}-1)) ; i++)); do
				ii=$((${i}*3))
				dname=${DRIVEINFO[${ii}]}
				dname=${dname//\/dev\/mapper\//}
				dname=${dname//\/dev\//}

				if [ "${dname}" = "sda1" ] && [ ${DRIVEINFO[$((${ii}+1))]//M/} -lt 1024 ]; then
					systempartition=true
				elif [ "${dname}" = "sda2" ] && [ ${DRIVEINFO[$((${ii}+1))]//M/} -lt 1024 ]; then
					systempartition=true
				elif [ "${dname}" = "shm" ] && [ ${DRIVEINFO[$((${ii}+1))]//M/} -lt 1024 ]; then
					systempartition=true
				elif [ "${dname}" = "nvme0n1p1" ] && [ ${DRIVEINFO[$((${ii}+1))]//M/} -lt 1024 ]; then
					systempartition=true
				elif [ "${dname}" = "mmcblk0p1" ] && [ ${DRIVEINFO[$((${ii}+1))]//M/} -lt 1024 ]; then
					systempartition=true
				else
					dtot=$(bc <<< "scale=2; ${DRIVEINFO[$((${ii}+1))]}/1024/10")
					dfree=$(bc <<< "scale=2; ${DRIVEINFO[$((${ii}+2))]}/1024/10")
					dfreeper=$(printf "%0.2f" $(jq -n ${dfree}/${dtot}*100))

					DRIVEINFO_TOT[$dname]=$dtot
					DRIVEINFO_FREE[$dname]=$dfree
					DRIVEINFO_FREEPER[$dname]=$dfreeper
					DRIVES+=("$dname")
				fi
			done

			IFS=$'\n' DRIVES=($(sort <<<"${DRIVES[*]}")); unset IFS

			# for x in "${!DRIVEINFO_TOT[@]}"; do printf "[%s]=%s\n" "$x" "${DRIVEINFO_TOT[$x]}" ; done
			# echo
			# for x in "${!DRIVEINFO_FREE[@]}"; do printf "[%s]=%s\n" "$x" "${DRIVEINFO_FREE[$x]}" ; done
			# echo
			# for x in "${!DRIVEINFO_FREEPER[@]}"; do printf "[%s]=%s\n" "$x" "${DRIVEINFO_FREEPER[$x]}" ; done
			# echo

			for DRIVE in "${DRIVES[@]}"; do
				
				[ "${host_limits_tmp[$DRIVE]}" = "" ] && host_limits_tmp[$DRIVE]=81
				
				

				WARNING_LEVEL=$(printf "%0.2f" $(jq -n 100-${host_limits_tmp[$DRIVE]}))
				CRITICAL_LEVEL=$(printf "%0.2f" $(jq -n $WARNING_LEVEL-$WARNING_LEVEL/2))
				
				if (( $(bc <<<"${DRIVEINFO_FREEPER[$DRIVE]} <= ${CRITICAL_LEVEL}") )); then
					fs_status='error'
					fs_status_color='Red'
					#if [ "${ALERT_EMAIL}" != "" ]; then echo -e "${host_name[$hostid]} - (${host_ip[$hostid]})\n${DRIVE} : ${DRIVEINFO_FREE[$DRIVE]} GB free\t$(date)" | mail -s "Free Space Critical: '${host_name[$hostid]}'" ${ALERT_EMAIL}; fi

				elif (( $(bc <<<"$dfreeper <= ${WARNING_LEVEL}") )); then
					fs_status='warn'
					fs_status_color='Yellow'
					#if [ "${ALERT_EMAIL}" != "" ]; then echo -e "${host_name[$hostid]} - (${host_ip[$hostid]})\n${DRIVE} : ${DRIVEINFO_FREE[$DRIVE]} GB free\t$(date)" | mail -s "Free Space Warning: '${host_name[$hostid]}'" ${ALERT_EMAIL}; fi

				else
					fs_status=''
					fs_status_color='Green'
				fi

				c=0; cw=40; spcA=''
				spc1=`expr ${cw} - ${#DRIVE}`
				until [ $c = ${spc1} ]; do spcA="${spcA} "; c=`expr $c + 1`; done

				c=0; cw=10; spcB=''
				spc2=`expr ${cw} - ${#DRIVEINFO_FREE[$DRIVE]}`
				until [ $c = ${spc2} ]; do spcB="${spcB} "; c=`expr $c + 1`; done

				c=0; cw=10; spcC=''
				spc3=`expr ${cw} - ${#DRIVEINFO_FREEPER[$DRIVE]}`
				until [ $c = ${spc3} ]; do spcC="${spcC} "; c=`expr $c + 1`; done

				c=0; cw=12; spcD=''
				spc4=`expr ${cw} - ${#DRIVEINFO_TOT[$DRIVE]}`
				until [ $c = ${spc4} ]; do spcD="${spcD} "; c=`expr $c + 1`; done

				echo -e "${idsCL[Cyan]} ${DRIVE}${spcA}:${idsCL[$fs_status_color]} ${DRIVEINFO_FREE[$DRIVE]} GB${spcB}${DRIVEINFO_FREEPER[$DRIVE]}%${spcC}${DRIVEINFO_TOT[$DRIVE]} GB${spcD}${idsCL[Cyan]}( ${idsCL[Yellow]}${WARNING_LEVEL}%${idsCL[Cyan]} / ${idsCL[Red]}${CRITICAL_LEVEL}%${idsCL[Cyan]} )${idsCL[Default]}"
			done
			
			unset DRIVEINFO_TOT DRIVEINFO_FREE DRIVEINFO_FREEPER DRIVES DRIVEINFO host_limits_tmp
			
		else
			echo -e "${idsCL[Yellow]} ${host_name[$hostid]} is down${idsCL[Default]}"
		fi

	done
	
	end=`date +%s`
	runtime=$((end-start))
	echo
	echo "runtime: ${runtime}"
}

SETUPSSH(){
	declare -A host_ip
	declare -A host_name
	
	while read hostid hostname hostip hostlimits; do
		if [ "$hostid" != "id" ]; then
			host_ip[${hostid}]=$(echo $hostip | cut -d ";" -f1)
			host_name[${hostid}]=$hostname
		fi
	done <<< $(MYSQL_PWD="sysmoninsert" mysql -h mysqldb.scity.us -P 3306 -u sysmoninsert -e "SELECT id,host,ip,limits FROM servermonitor.hosts")
	
	for hostid in "${!host_ip[@]}"; do
		echo -e "${idsST[Bold]}${idsCL[LightCyan]} ${host_name[$hostid]} - SSH KEY COPY${idsCL[Default]}${idsST[Reset]}"
		ssh-copy-id root@${host_ip[$hostid]}
	done
}


case $action in
	check) CHECK;;
	setupssh) SETUPSSH;;
	run) RUN ${2};;
	update);;
	*) RUN ${action};;
esac

exit 0