# PRTG-Cascade
#
# Load last values of an existing Sensor from another PRTG instance and sends them to the local sensor
#
# 20180428 frank@carius.de
#	Initial Version
param (
	$serveruri = "https://prtg.paessler.com",
	$Username = "demo",
	$password = "demodemo",
	$sensorid = "2598",
	$passhash = $null
)

write-host "PRTG-Cascade:Start"
write-host " Serveruri: $($serveruri)"
write-host "  Username $($Username)"
if ($passhash) {
	Write-host "  Using PassHash"
	$requesturi = "$($serveruri)/api/table.xml?content=channels&Username=$($Username)&passhash=$($passhash)&columns=name,lastvalue_&id=$($sensorid)"

}
else {
	write-host "  Using Password"
	$requesturi = "$($serveruri)/api/table.xml?content=channels&Username=$($Username)&password=$($password)&columns=name,lastvalue_&id=$($sensorid)"
}

write-host "  Requesturi = $($Requesturi)"

	try {
		write-host "Requesting Data from Source"
		$result = invoke-restmethod $requesturi

		write-host "PRTG-Cascade: Build PRTG XML"   
		$prtgresult = "<?xml version=""1.0"" encoding=""UTF-8"" ?>`r`n<prtg>`r`n"
		foreach ($item in $result.channels.item) {
			if ($item.lastvalue -ne $null) {
				#$item.name  + " xx " + $item.lastvalue.split(" ")[0] + " xx " + $item.lastvalue.split(" ")[1]
				$prtgresult += "  <result>`r`n"
				$prtgresult += "    <channel>$($item.name)</channel>`r`n"
				if ($item.lastvalue.contains(" ")){
					$prtgresult += "    <value>$($item.lastvalue.split(" ")[0])</value>`r`n"
					$prtgresult += "    <unit>Custom</unit>`r`n"
					$prtgresult += "    <CustomUnit>$($item.lastvalue.split(" ")[1])</CustomUnit>`r`n"
					if ($item.lastvalue.contains(",")) {
						$prtgresult += "    <float>1</float>`r`n"
					}
					else {
						$prtgresult += "    <float>0</float>`r`n"
					}
				}
				$prtgresult += "    <unit>Count</unit>`r`n"
				$prtgresult += "  </result>`r`n"
			}
		}
		$prtgresult += "  <text>OK URL:$($serveruri) SensorID:$($sensorid)</text>`r`n"
		$prtgresult += "  <error>0</error>`r`n"
		$prtgresult += "</prtg>"
	}
	catch {
		write-host " Error loading Data from Source. Error $($_.Exception.Message)"
		$prtgresult = '<?xml version="1.0" encoding="UTF-8" ?>
				<prtg>
					<text>Error loading Data from Source. Error '+$_.Exception.Message+'</text>
					<error>1</error>
				</prtg>'
	}

write-host "PRTG-Cascade:End"
write-host "PRTG-Cascade:Send PRTGResult to STDOUT"
$prtgresult