[CmdletBinding(SupportsShouldProcess = $true)]Param()
function Test-Null($InputObject) { return !([bool]$InputObject) }
Function ResizeImage() {
    param([String]$ImagePath, [Int]$Quality = 90, [Int]$targetSize, [String]$OutputLocation)
    Add-Type -AssemblyName "System.Drawing"
    $img = [System.Drawing.Image]::FromFile($ImagePath)
    $CanvasWidth = $targetSize
    $CanvasHeight = $targetSize
    #Encoder parameter for image quality
    $ImageEncoder = [System.Drawing.Imaging.Encoder]::Quality
    $encoderParams = New-Object System.Drawing.Imaging.EncoderParameters(1)
    $encoderParams.Param[0] = New-Object System.Drawing.Imaging.EncoderParameter($ImageEncoder, $Quality)
    # get codec
    $Codec = [System.Drawing.Imaging.ImageCodecInfo]::GetImageEncoders() | Where { $_.MimeType -eq 'image/jpeg' }
    #compute the final ratio to use
    $ratioX = $CanvasWidth / $img.Width;
    $ratioY = $CanvasHeight / $img.Height;
    $ratio = $ratioY
    if ($ratioX -le $ratioY) {
        $ratio = $ratioX
    }
    $newWidth = [int] ($img.Width * $ratio)
    $newHeight = [int] ($img.Height * $ratio)
    $bmpResized = New-Object System.Drawing.Bitmap($newWidth, $newHeight)
    $graph = [System.Drawing.Graphics]::FromImage($bmpResized)
    $graph.InterpolationMode = [System.Drawing.Drawing2D.InterpolationMode]::HighQualityBicubic
    $graph.Clear([System.Drawing.Color]::White)
    $graph.DrawImage($img, 0, 0, $newWidth, $newHeight)
    #save to file
    $bmpResized.Save($OutputLocation, $Codec, $($encoderParams))
    $bmpResized.Dispose()
    $img.Dispose()
}

#get sid and photo for current user
$user = ([ADSISearcher]"(&(objectCategory=User)(SAMAccountName=$env:username))").FindOne().Properties
$user_photo = $user.thumbnailphoto
$user_sid = [System.Security.Principal.WindowsIdentity]::GetCurrent().User.Value
Write-Host "Updating account picture for $($user.displayname)..."
#continue if an image was returned
If ((Test-Null $user_photo) -eq $false) {
    Write-Host "Success. Photo exists in Active Directory."
    #set up image sizes and base path
    $image_sizes = @(32, 40, 48, 96, 192, 200, 240, 448, 1080)
    $image_mask = "Image{0}.jpg"
    $image_base = "C:\ProgramData\AccountPictures"
    #set up registry
    $reg_base = "HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\AccountPicture\Users\{0}"
    $reg_key = [string]::format($reg_base, $user_sid)
    $reg_value_mask = "Image{0}"
    If ((Test-Path -Path $reg_key) -eq $false) { New-Item -Path $reg_key }
    #save images, set reg keys
    ForEach ($size in $image_sizes) {
        #create hidden directory, if it doesn't exist
        $progdatadir = $image_base + "\" + $user_sid
        If ((Test-Path -Path $progdatadir) -eq $false) { $(mkdir $progdatadir).Attributes = "Hidden" }
        #save photo to disk, overwrite existing files
        $file_name = ([string]::format($image_mask, $size))
        $pathtmp = $dir + "\_" + $file_name
        $path = $dir + "\" + $file_name
        Write-Host " saving: $file_name"
        $user_photo | Set-Content -Path $pathtmp -Encoding Byte -Force
        ResizeImage $pathtmp $size $size $path
        Remove-Item $pathtmp
        #save the path in registry, overwrite existing entries
        $name = [string]::format($reg_value_mask, $size)
        $value = New-ItemProperty -Path $reg_key -Name $name -Value $path -Force
    }
    Write-Host ("Copying to Public Account Pictures")
    try {
        $PublicAccPicsDir = "C:\Users\Public\AccountPictures\" + "$user_sid"
        If ((Test-Path -Path $PublicAccPicsDir) -eq $false) { 
            (mkdir $PublicAccPicsDir).Attributes = "Hidden"
        } else {
            rm "$PublicAccPicsDir\*.*"
        }
        Copy-Item $progdatadir\*.* "$PublicAccPicsDir\"
    } catch {
        Write-Host "Couldn't copy to Public Account Pictures!"
    }
    Write-Host "Done!"
}
else { Write-Error "No photo found in Active Directory for $env:username" }