Saves all Pictures from the Windows Spotlight into My Documents/spotter

spotter.ps1

function Check-Header
{
	   param(
			 $path
	   )
	  
	   # Hexidecimal signatures for expected files
	   $jpg = 'FFD8FFE0';
			
	   # Get content of each file (up to 4 bytes) for analysis
	   ([Byte[]] $fileheader = Get-Content -Path $path -TotalCount 4 -Encoding Byte) |
	   ForEach-Object {
			 if(("{0:X}" -f $_).length -eq 1)
			 {
				   $HeaderAsHexString += "0{0:X}" -f $_
			 }
			 else
			 {
				   $HeaderAsHexString += "{0:X}" -f $_
			 }
	   }
	  
	   # Validate file header
	   @($jpg) -contains $HeaderAsHexString		   
}


$storepath = "$([Environment]::GetFolderPath("MyDocuments"))\spotter"
md -force $storepath | Out-Null

[Reflection.Assembly]::LoadWithPartialName("System.Windows.Forms")


Get-ChildItem "$env:localappdata\Packages\Microsoft.Windows.ContentDeliveryManager_cw5n1h2txyewy\LocalState\Assets" | 
Foreach-Object {	
    # Use SHA1 hash of file to prevent duplicates
    $hash = Get-FileHash -Algorithm SHA1 $_.fullName
    $target = "$storepath\$($hash.Hash).jpg"
	if (!(Test-Path $target)) {
		if (Check-Header $_.fullName) {
			$img = [System.Drawing.Image]::Fromfile($_.fullName);
			if ($img.Size.Width -ge 1920) {
				echo "Found new $($_.name)"
				Copy-Item $_.fullName "$target"
			}
		}
	}
}