#!/bin/powershell
<#
.SYNTAX         ./take-screenshot.ps1 [<directory>]
.DESCRIPTION	takes a single screenshot and saves it into the current/given directory
.LINK		https://github.com/fleschutz/PowerShell
.NOTES		Author:	Markus Fleschutz / License: CC0
#>

param([string]$Directory = "")

function TakeScreenshot { param([string]$FilePath)
	Add-Type -Assembly System.Windows.Forms            
	$ScreenBounds = [Windows.Forms.SystemInformation]::VirtualScreen
	$ScreenshotObject = New-Object Drawing.Bitmap $ScreenBounds.Width, $ScreenBounds.Height
	$DrawingGraphics = [Drawing.Graphics]::FromImage($ScreenshotObject)
	$DrawingGraphics.CopyFromScreen( $ScreenBounds.Location, [Drawing.Point]::Empty, $ScreenBounds.Size)
	$DrawingGraphics.Dispose()
	$ScreenshotObject.Save($FilePath)
	$ScreenshotObject.Dispose()
}

try {
	if ($Directory -eq "") {
		$Directory = "$PWD"
	}

	$Time = (Get-Date)
	$Filename = "$($Time.Year)-$($Time.Month)-$($Time.Day)-$($Time.Hour)-$($Time.Minute)-$($Time.Second).png"
	$FilePath = (Join-Path $Directory $Filename)

	write-output "Saving screenshot to $FilePath..."
	TakeScreenshot $FilePath
	exit 0
} catch {
	write-error "ERROR: line $($_.InvocationInfo.ScriptLineNumber): $($Error[0])"
	exit 1
}