#!/bin/bash

TEST=false;

if [ "$1" != "update" ]; then

	source /opt/idssys/defaults/colors.inc
	source /opt/idssys/defaults/default.inc
	source /opt/idssys/pibackup/settings.inc

	#BackupDir="${MountPoint}/${hostname}"
	BackupDir=/mnt/veeam-backups/octopi
	logfile=/opt/idssys/pibackup/logfile

	echo
	echo '----------------------------------------------------------------------------------------------------'
	echo "$(date) - NEW BACKUP"
	echo '----------------------------------------------------------------------------------------------------'

	if grep '/dev/nvme0n1' /etc/mtab > /dev/null 2>&1; then dtype=/dev/nvme0n1
	elif grep '/dev/mmcblk0' /etc/mtab > /dev/null 2>&1; then dtype=/dev/mmcblk0
	fi
	
	echo "$(date) - Checking for mounted Backup Drive..."
	if [ ! -f ${MountPoint}/mounted ]; then
		echo "$(date) - Not found, mounting drive now..."
		mount.cifs ${ServerName} ${MountPoint} -o user=${UserName},password=${Password}
		sleep 15s
		if [ ! -f ${MountPoint}/mounted ]; then
			echo "$(date) - Backup Drive mounted"
		else
			echo "$(date) - Backup Drive COULD NOT be mounted... exiting"
			exit 1
		fi
	else
		echo "$(date) - Backup Drive already mounted"
	fi
	#[ ! -d "$MountPoint" ] && mkdir -p "$MountPoint"
	[ ! -d "$BackupDir" ] && mkdir -p "$BackupDir"

	echo "$(date) - Starting Backup"
	[ $TEST != true ] && dd if=${dtype} of=${BackupDir}/$(date +%Y-%m-%d).img bs=1M status=progress
	echo "$(date) - Backup Complete"
	[ $TEST != true ] && sleep 1m
	echo "$(date) - Starting PiShrink"
	[ $TEST != true ] && source /opt/idssys/pibackup/pishrink.sh -az ${BackupDir}/$(date +%Y-%m-%d).img

	echo "$(date) - PiShrink complete"
	[ $TEST != true ] && sleep 1m
	
	echo "$(date) - Removing old backups..."
	allfiles=`ls -1 ${BackupDir}/*.img.gz`
	files=(`ls -1 ${BackupDir}/*.img.gz | tail -3`)
	for i in $allfiles; do keep=0;
		for a in ${files[@]}; do
			if [ $i == $a ]; then keep=1; fi;
		done;
		if [ $keep == 0 ]; then
			echo "$(date) - REMOVING : $i"
			[ $TEST != true ] && rm -rf $i
		else
			echo "$(date) - KEEPING  : $i"
		fi
	done
	echo "$(date) - Completed"
	#umount ${MountPoint}
fi

exit 0