using System;
using System.Diagnostics;
using System.IO;
using System.Net;
using System.Threading;
using RageCoop.Core;

namespace RageCoop.Server;

internal class Program
{
    private static bool Stopping;
    private static Logger mainLogger;

    private static void Main(string[] args)
    {
        if (args.Length >= 2 && args[0] == "update")
        {
            var target = args[1];
            var i = 0;
            while (i++ < 10)
                try
                {
                    Console.WriteLine("Applying update to " + target);

                    CoreUtils.CopyFilesRecursively(new DirectoryInfo(AppDomain.CurrentDomain.BaseDirectory),
                        new DirectoryInfo(target));
                    Process.Start(Path.Combine(target, "RageCoop.Server"));
                    Environment.Exit(0);
                }
                catch (Exception ex)
                {
                    Console.WriteLine(ex.ToString());
                    Thread.Sleep(3000);
                }

            Environment.Exit(i);
        }

        AppDomain.CurrentDomain.UnhandledException += UnhandledException;
        mainLogger = new Logger
        {
            Name = "Server"
        };
        mainLogger.Writers.Add(CoreUtils.OpenWriter("RageCoop.Server.log"));
        try
        {
            Console.Title = "RAGECOOP";
            var setting = Util.Read<Settings>("Settings.xml");
#if DEBUG
            setting.LogLevel = 0;
#endif
            var server = new Server(setting, mainLogger);
            Console.CancelKeyPress += delegate(object sender, ConsoleCancelEventArgs e)
            {
                mainLogger.Info("Initiating shutdown sequence...");
                mainLogger.Info("Press Ctrl+C again to commence an emergency shutdown.");
                if (e.SpecialKey == ConsoleSpecialKey.ControlC)
                {
                    if (!Stopping)
                    {
                        e.Cancel = true;
                        Stopping = true;
                        server.Stop();
                        mainLogger.Info("Server stopped.");
                        mainLogger.Dispose();
                        Thread.Sleep(1000);
                        Environment.Exit(0);
                    }
                    else
                    {
                        mainLogger.Flush();
                        Environment.Exit(1);
                    }
                }
            };
            server.Start();
            mainLogger?.Info("Please use CTRL + C if you want to stop the server!");
            mainLogger?.Info("Type here to send chat messages or execute commands");
            mainLogger?.Flush();
            while (true)
            {
                var s = Console.ReadLine();
                if (!Stopping && s != null) server.ChatMessageReceived("Server", s);
                Thread.Sleep(20);
            }
        }
        catch (Exception e)
        {
            Fatal(e);
        }
    }

    private static void UnhandledException(object sender, UnhandledExceptionEventArgs e)
    {
        mainLogger.Error("Unhandled exception thrown from user thread", e.ExceptionObject as Exception);
        mainLogger.Flush();
    }

    private static void Fatal(Exception e)
    {
        mainLogger.Error(e);
        mainLogger.Error("Fatal error occurred, server shutting down.");
        mainLogger.Flush();
        Thread.Sleep(5000);
        Environment.Exit(1);
    }
}