Uninstalls a windows service on a local/remote machine

serviceUninstall.ps1

param(
[Parameter(Mandatory = $true, Position = 0)]
[string]$ServiceName, 
[Parameter(Mandatory = $false, Position = 1)]
[string]$DeploymentServer
)

function Get-RemoteService(
	[string]$serviceName = $(throw "serviceName is required"), 
	[string]$targetServer = $(throw "targetServer is required"))
{
	$svc = Get-WmiObject -Namespace "root\cimv2" -Class "Win32_Service" -ComputerName $targetServer -Filter "Name='$serviceName'" -Impersonation 3    
	return $svc
}

function Uninstall-RemoteService(
	[string]$serviceName = $(throw "serviceName is required"), 
	[string]$targetServer = $(throw "targetServer is required"))
{
	$service = Get-RemoteService $serviceName $targetServer
	 
	if (!($service))
	{ 
		Write-Warning "Failed to find service $serviceName on $targetServer. Nothing to uninstall."
		return
	}
	 
	"Found service $serviceName on $targetServer; checking status"
			 
	if ($service.Started)
	{
		"Stopping service $serviceName on $targetServer"
		#could also use Set-Service, net stop, SC, psservice, psexec etc.
		$result = $service.StopService()
		Test-ServiceResult -operation "Stop service $serviceName on $targetServer" -result $result
	}
	 
	"Attempting to uninstall service $serviceName on $targetServer"
	$result = $service.Delete()
	Test-ServiceResult -operation "Delete service $serviceName on $targetServer" -result $result   
}

function Test-ServiceResult(
	[string]$operation = $(throw "operation is required"), 
	[object]$result = $(throw "result is required"), 
	[switch]$continueOnError = $false)
{
	$retVal = -1
	if ($result.GetType().Name -eq "UInt32") { $retVal = $result } else {$retVal = $result.ReturnValue}
		 
	if ($retVal -eq 0) {return}
	 
	$errorcode = 'Success,Not Supported,Access Denied,Dependent Services Running,Invalid Service Control'
	$errorcode += ',Service Cannot Accept Control, Service Not Active, Service Request Timeout'
	$errorcode += ',Unknown Failure, Path Not Found, Service Already Running, Service Database Locked'
	$errorcode += ',Service Dependency Deleted, Service Dependency Failure, Service Disabled'
	$errorcode += ',Service Logon Failure, Service Marked for Deletion, Service No Thread'
	$errorcode += ',Status Circular Dependency, Status Duplicate Name, Status Invalid Name'
	$errorcode += ',Status Invalid Parameter, Status Invalid Service Account, Status Service Exists'
	$errorcode += ',Service Already Paused'
	$desc = $errorcode.Split(',')[$retVal]
	 
	$msg = ("{0} failed with code {1}:{2}" -f $operation, $retVal, $desc)
	 
	if (!$continueOnError) { Write-Error $msg } else { Write-Warning $msg }        
}

$service = $null 

if([string]::IsNullOrWhiteSpace($DeploymentServer))
{
	$service = Get-WmiObject Win32_Service -filter "name='$ServiceName'"
	Stop-Service $ServiceName
	Write-Host "Waiting 5 seconds for the service to stop..."
	Start-Sleep -s 5
	if($service.State -eq "Stopped")
	{
		$service.Delete()
		Write-Host "The service has been successfully removed!"
	}
	else
	{
		Write-Error "The service could not be stopped and the removal has failed!"
	}
}
else
{
	Uninstall-RemoteService -serviceName $ServiceName -targetServer $DeploymentServer
}