beerpsi-x/chuni/rekey_opt.ps1

param (
    [Parameter(Mandatory=$true)]
    [string]$opt
)

Add-Type -Path "bin/DereTore.Exchange.Audio.HCA.dll"

$ccFrom = [DereTore.Exchange.Audio.HCA.CipherConfig]::new()
$ccFrom.Key1 = 3728959580
$ccFrom.Key2 = 7782811

$ccTo = [DereTore.Exchange.Audio.HCA.CipherConfig]::new()
$ccTo.Key1 = 3458615040
$ccTo.Key2 = 7667487
$ccTo.CipherType = 56

Get-ChildItem (Join-Path $opt "cueFile") | ForEach-Object {
    $acb = (Get-ChildItem "$($_.FullName)\*.acb" | Select-Object -First 1).FullName
    $unpacked_folder = "$($_.FullName)\$([IO.Path]::GetFileNameWithoutExtension($acb))"
    
    .\bin\AcbEditor.exe "$acb"

    Get-ChildItem "$unpacked_folder\*.hca" | ForEach-Object {
        $inputStream = [IO.FileStream]::new($_.FullName, [IO.FileMode]::Open, [IO.FileAccess]::Read)
        $outputStream = [IO.FileStream]::new("$($_.FullName).new", [IO.FileMode]::Create, [IO.FileAccess]::Write)
        $converter = [DereTore.Exchange.Audio.HCA.CipherConverter]::new($inputStream, $outputStream, $ccFrom, $ccTo)
        $converter.Convert()
        
        $outputStream.Dispose()
        $inputStream.Dispose()

        Move-Item -Force "$($_.FullName).new" "$($_.FullName)"
    }

    .\bin\AcbEditor.exe "$unpacked_folder"

    Remove-Item -Recurse "$unpacked_folder"
}