## Specify the URL to download the app from
$URL = 'https://dl.4kdownload.com/app/4kvideodownloader_4.16.0_x64.msi'

## Make sure the app isn't already installed
If (! (Test-Path "${Env:ProgramFiles}\4KDownload\4kvideodownloader\4kvideodownloader.exe") ) {

    ## Download the installer
    $INSTALLER = Download-File -URL $URL

    ## Install the app
    Write-Output "Installing 4K Video Downloader from ""${INSTALLER}"""
    Try { Start-Process "msiexec.exe" -ArgumentList "/i ${INSTALLER} /qn /norestart" -Wait }
    Catch { Write-Error $_.Exception.Message }

    ## Delete the installer
    Write-Output "Deleting downloaded installer from ""${INSTALLER}"""
    Try { Remove-Item -Path $INSTALLER -Force -ErrorAction SilentlyContinue }
    Catch { Write-Error $_.Exception.Message }
}
Else { Write-Output "4K Video Downloader is already installed!" }