Chocolatey - Ensure Installed.ps1

Write-Output "Checking ChocolateyInstall env variable"
$chocolateyInstall = [Environment]::GetEnvironmentVariable("ChocolateyInstall")

if (!$chocolateyInstall) {
    Write-Output "ChocolateyInstall env variable does not exist, using $ChocolateyInstallDir"
    $chocolateyInstall = $ChocolateyInstallDir
    [Environment]::SetEnvironmentVariable("ChocolateyInstall", $chocolateyInstall)
    [Environment]::SetEnvironmentVariable("ChocolateyInstall", $chocolateyInstall, "Machine")
}

Write-Output "Ensuring the Chocolatey package manager is installed..."

$chocolateyBin = "$chocolateyInstall\bin"
$chocInstalled = Test-Path "$chocolateyBin\cinst.exe"

if (-not $chocInstalled) {
    Write-Output "Chocolatey not found, installing..."
    
    $installPs1 = ((new-object net.webclient).DownloadString('https://chocolatey.org/install.ps1'))
    Invoke-Expression $installPs1

    & cmd.exe /C "SET PATH=%PATH%;$chocolateyBin"
    
    Write-Output "Chocolatey installation complete."
} else {
    Write-Output "Chocolatey was found at $chocolateyBin and won't be reinstalled."
}