using System.Formats.Tar;
using System.Net;
using System.Runtime.InteropServices;
using System.Security.AccessControl;
using CmlLib.Core;
using CmlLib.Core.Auth;
using CmlLib.Core.Auth.Microsoft;
using CmlLib.Core.ProcessBuilder;
using XboxAuthNet.Game.Msal;

namespace Plombir;

/*
    Basically a class to manage everything launcher related.
    TODO - minecraft downloading from webserver
*/
public class Launcher
{
    private readonly string _version;
    static private MinecraftPath? _mcPath;
    static private MinecraftLauncher? _mcLauncher;

    public int DownloadProgress;
    public string? DownloadStatus;

    public Launcher(string version, string? location = null)
    {
        _version = version;
        _mcPath = new($"{location}/{version}/minecraft");
        _mcLauncher = new(_mcPath);
    }

    async public Task BuildLauncher(CancellationToken token)
    {
        if (_mcLauncher is null)
            throw new NullReferenceException("Failed to build! Launcher is null!");

        _mcLauncher.ByteProgressChanged += (_, args) =>
        {
            Console.WriteLine($"{(int)(args.ProgressedBytes * 0.000001)} MBytes / {(int)(args.TotalBytes * 0.000001)} MBytes");
            DownloadProgress = (int)(args.ProgressedBytes * 100 / args.TotalBytes);
        };

        DownloadStatus = "Getting the assets from Mojang...";
        Console.WriteLine(DownloadStatus);
        await _mcLauncher.InstallAsync(_version);
        DownloadStatus = "Finished!";
        Console.WriteLine(DownloadStatus);
        return;
    }

    public MSession CreateOfflineSession(string nickname)
    {
        var s = MSession.CreateOfflineSession(nickname);
        if (s is null) throw new NullReferenceException("Tried creating offline session, but it's resulted in null!");
        return s;
    }

    public MSession CreateLicensedSession(string uuid, string accsessToken, string nickname)
    {
        var s = new MSession(nickname, accsessToken, uuid);
        if (s is null) throw new NullReferenceException("Tried creating licensed session, but it's resulted in null!");
        return s;
    }

    async public Task RunLauncher(MSession session)
    {
        if (_mcLauncher is null)
            throw new NullReferenceException("Failed to run launcher! Launcher is null!");

        var process = await _mcLauncher.BuildProcessAsync(_version, new MLaunchOption
        {
            // Passing session, to support offline and licensed login methods.
            Session = session,
            MaximumRamMb = 4096,

        }) ?? throw new Exception("Failed to start minecraft process!");

        var processUtil = new ProcessWrapper(process);
        processUtil.OutputReceived += (s, e) => Console.WriteLine(e);
        processUtil.StartWithEvents();

        await processUtil.WaitForExitTaskAsync();
    }

}