<#
.SYNOPSIS
	Change Lock Screen and Desktop Background in Windows 10 Pro.
.DESCRIPTION
	This script allows you to change logon screen and desktop background in Windows 10 Professional using GPO startup script.
.PARAMETER LockScreenSource (Optional)
	Path to the Lock Screen image to copy locally in computer.
    Example: "\\SERVER-FS01\LockScreen.jpg"
.PARAMETER BackgroundSource (Optional)
	Path to the Desktop Background image to copy locally in computer.
    Example: "\\SERVER-FS01\BackgroundScreen.jpg"
.PARAMETER LogPath (Optional)
    Path where save log file. If it's not specified no log is recorded.
.EXAMPLE
    Set Lock Screen and Desktop Wallpaper with logs:
    Set-Screen -LockScreenSource "\\SERVER-FS01\LockScreen.jpg" -BackgroundSource "\\SERVER-FS01\BackgroundScreen.jpg" -LogPath "\\SERVER-FS01\Logs"
.EXAMPLE
    Set Lock Screen and Desktop Wallpaper without logs:
    Set-Screen -LockScreenSource "\\SERVER-FS01\LockScreen.jpg" -BackgroundSource "\\SERVER-FS01\BackgroundScreen.jpg"
.EXAMPLE
    Set Lock Screen only:
    Set-Screen -LockScreenSource "\\SERVER-FS01\LockScreen.jpg" -LogPath "\\SERVER-FS01\Logs"
.EXAMPLE
	Set Desktop Wallpaper only:
    Set-Screen -BackgroundSource "\\SERVER-FS01\BackgroundScreen.jpg" -LogPath "\\SERVER-FS01\Logs"
.NOTES
	Author: Juan Granados
	Date:   September 2018
#>

<#

Param(
		[Parameter(Mandatory=$false,Position=0)]
		[ValidateNotNullOrEmpty()]
		[string]$LockScreenSource,
        [Parameter(Mandatory=$false,Position=1)]
		[ValidateNotNullOrEmpty()]
		[string]$BackgroundSource,
        [Parameter(Mandatory=$false,Position=2)]
		[ValidateNotNullOrEmpty()]
		[string]$LogPath
	)
#>
#Requires -RunAsAdministrator

mkdir C:\tmp -force

Invoke-WebRequest http://willsbros.eu/WB4k_2023.jpg -OutFile C:\tmp\WB4k_2023.jpg
#Invoke-WebRequest http://willsbros.eu/WB4k_2023_login.jpg -OutFile C:\tmp\WB4k_2023_login.jpg

`
if (-not [string]::IsNullOrWhiteSpace($LogPath)) {
    Start-Transcript -Path "$($LogPath)\$($env:COMPUTERNAME).log" | Out-Null
}

$ErrorActionPreference = "SilentlyContinue"
If ($Error) {$Error.Clear()}
$BackgroundSource = "C:\tmp\WB4k_2023.jpg"

$RegKeyPath = "HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\PersonalizationCSP"

$DesktopPath = "DesktopImagePath"
$DesktopStatus = "DesktopImageStatus"
$DesktopUrl = "DesktopImageUrl"

$StatusValue = "1"
$DesktopImageValue = "C:\Windows\System32\Desktop-24.jpg"

if (!$BackgroundSource)
{
    Write-Host "Either BackgroundSource must has a value."
}
else
{
    if(!(Test-Path $RegKeyPath)) {
        New-Item -Path $RegKeyPath -Force | Out-Null
    }
    if ($BackgroundSource) {
        Copy-Item $BackgroundSource $DesktopImageValue -Force
        New-ItemProperty -Path $RegKeyPath -Name $DesktopStatus -Value $StatusValue -PropertyType DWORD -Force | Out-Null
        New-ItemProperty -Path $RegKeyPath -Name $DesktopPath -Value $DesktopImageValue -PropertyType STRING -Force | Out-Null
        New-ItemProperty -Path $RegKeyPath -Name $DesktopUrl -Value $DesktopImageValue -PropertyType STRING -Force | Out-Null
    }
}

if (-not [string]::IsNullOrWhiteSpace($LogPath)){Stop-Transcript}