$zabbix_version = "3.0.0*"
 
$curDir = $MyInvocation.MyCommand.Definition | split-path -parent
$d=Get-Date -Format "yyyy-MM-dd"
$t=Get-Date -Format "HH:mm"
$LogFile = "$curDir\updatelog_"+$d+".log"
 
$log = "`n" + $d + " " + $t + " Start"
Write-Host $log
Out-File -FilePath $LogFile -Append -Encoding default -InputObject $log
 
Get-ADComputer -Filter {OperatingSystem -Like "Windows Server*"} -Property Name, OperatingSystem  | ForEach {
#Import-CSV "$curDir\computers.csv" -header("Name") | ForEach {
	$ComputerName = $_.Name
	$path = "\\$ComputerName\c$\Program Files\Zabbix"
	Write-host $ComputerName
	if ((Test-Connection $ComputerName -quiet -count 1)) {
		if ((Test-Path $path)) {
		    if ((Get-Service "zabbix agent" -ComputerName $ComputerName)) {
			$installed_zabbix_version = (Get-Item $path\zabbix_agentd.exe).versioninfo.fileversion
				if (($installed_zabbix_version -notlike $zabbix_version)) {
					$bit = (Get-WmiObject Win32_ComputerSystem -computer $ComputerName).systemtype
					if (($bit)) {
 
						Set-Service "zabbix agent" -ComputerName $ComputerName -Status stopped -PassThru
						if ($bit -like '*64*') {
							Copy-Item $curDir\win64\*.exe $path
							$zbit = 64
						}
						else {
							Copy-Item $curDir\win32\*.exe $path
							$zbit = 32
						}
						Set-Service "zabbix agent" -ComputerName $ComputerName -Status running -PassThru
 
		                        	$msg = " - Agent updated, " + $_.OperatingSystem + ", " + $bit + ", " + $zbit
					}
					else { $msg = " - Agent not updated, unknown architecture or RPC is unavailable " + $bit }
			}
			else { $msg = " - already updated " + $installed_zabbix_version}
		    }
		    else { $msg = " - Agent not installed" }
		}
		else { $msg = "- Zabbix folder not exist" }
	}
	else { $msg = " is not available" }
$log = $d + " " + $t + " " + $ComputerName + $msg
Write-Host $log
Out-File -FilePath $LogFile -Append -Encoding default -InputObject $log
}
 
$log = $d + " " + $t + " All done"
Write-Host $log
Out-File -FilePath $LogFile -Append -Encoding default -InputObject $log