Add-Type -AssemblyName System.Security
$entropyBytes = [System.Text.UTF8Encoding]::UTF8.GetBytes("Chocolatey")

Function Unprotect-Arguments {
    param([string]$data)
    $encryptedByteArray = [System.Convert]::FromBase64String($data)
    $decryptedByteArray = [System.Security.Cryptography.ProtectedData]::Unprotect(
        $encryptedByteArray,
        $entropyBytes,
        [System.Security.Cryptography.DataProtectionScope]::LocalMachine
    )
    return [System.Text.UTF8Encoding]::UTF8.GetString($decryptedByteArray)
}

Function Read-Arguments {
    param([string]$packageName)
    $directory = Get-ChildItem $env:ChocolateyInstall\.chocolatey -Directory -Filter "$packageName*" | `
        Where-Object { $_.Name -match ("$packageName" + "\.[\d\.]+") } | Select-Object -Last 1
    If (!($directory)) { return }
    $argsFile = Join-Path $directory.fullname ".arguments"
    If (Test-Path $argsFile) {
        $argsData = Get-Content $argsFile
        #Implicitly return result from Unprotect-Arguments
        Unprotect-Arguments -data $argsData
    }
}

Function Get-LocalPackageInfo {
    & choco list -lo -r -y
}

Function Get-PackagesConfigBody($SaveArguments = $false) {
    Get-LocalPackageInfo | ForEach-Object {
        $packageName = $($_.SubString(0, $_.IndexOf("|")))
        $line = '   <package id="' + $packageName + '" '

        If ($SaveArguments) {
            $line = $line + 'arguments="' + [System.Security.SecurityElement]::Escape($(Read-Arguments $packageName)) + '" '
        }
    
        $line = $line + '/>'
        $line

    }
}

Function Write-PackagesConfig($OutputFile, $SaveArguments = $false) {
    $header = "<?xml version=`"1.0`" encoding=`"utf-8`"?>`n<packages>"
    $footer = "</packages>"
    $body = Get-PackagesConfigBody -SaveArguments $SaveArguments
    Write-Output $header $body $footer | Out-File $OutputFile -Encoding ASCII
}
 
# choco export -o="choco-packages.config" --include-install-args
Write-PackagesConfig -OutputFile "choco-packages.config" -SaveArguments $true