#########################################################################
#
# Author: Christian Birkenbeul
# Version: 1.0
#
# Change Log
# 1.0
# Creating Plugin
#
##########################################################################

<#
.Synopsis
Checking Hyper-V Integration Services
.Description
Checking Hyper-V Integration Services and lists failed vms and his current version.
.Parameter current
Current Integration Services Version given via nsclient++
#>

$current = $ARGS[0]
$okvms = @()
$failedvmname = @()

$vm = Get-VM |Select-Object Name,IntegrationServicesVersion

foreach ($line in $vm) {
  if ($current -eq $line.IntegrationServicesVersion) {
    $okvms += $line.Name
  }
  else {
    $failedvmname += $line.Name
    $failedvmvers += $line.IntegrationServicesVersion
  }
}

if($failedvmname.Length -gt 0) {
  Write-Host $failedvmname.Length "Integration Services are old or not installed."
  Write-Host $failedvmname - $failedvmvers
  exit 1
  }

else {
  Write-Host "All $($okvms.Length) VMs has current Version."
  exit 0
  }