using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Text.RegularExpressions;
using System.Threading;
using System.IO;
using System.Net;
using System.Net.Sockets;

namespace ConsoleClient
{
    class Program
    {
        static TcpClient client;
        static StreamReader rdr;
        static StreamWriter rwr;
        static bool running = true;
        static void Main(string[] args)
        {
            run();
        }

        static void reset()
        {
            Console.ForegroundColor = ConsoleColor.Yellow;
            Console.WriteLine("Resetting..");
            Console.ResetColor();

            running = false;
            client = null;
            rdr.Dispose();
            rwr.Dispose();

            run();
        }

        static void run()
        {
            client = new TcpClient();
            Console.WriteLine("-Connecting-");
            client.Connect("irc.esper.net", 6667);

            rdr = new StreamReader(client.GetStream());
            rwr = new StreamWriter(client.GetStream());

            new Thread(new ThreadStart(DoRead)).Start();

            Console.WriteLine("Input Ready!");
            string inl = "";

            int tries = 0;
            do
            {
                try
                {
                    inl = Console.ReadLine();

                    rwr.WriteLine(inl);
                    rwr.Flush();

                    tries = 0;
                }
                catch
                {
                    if (running && tries >= 3)
                    {
                        reset();
                        break;
                    }
                    tries++;

                }
            } while (inl != "exit");
            running = false;
        }

        static void DoRead()
        {
            int tries = 0;
            while (running)
            {
                try
                {
                    string line = rdr.ReadLine();

                    Match match = Regex.Match(line, @"^(:(?<prefix>\S+) )?(?<command>\S+)( (?!:)(?<params>.+?))?( :(?<trail>.+))?$");
                    if (match.Success)
                    {
                        string prefix = match.Groups["prefix"].Value;
                        string command = match.Groups["command"].Value;
                        string param = match.Groups["params"].Value;
                        string trail = match.Groups["trail"].Value;

                        switch (command)
                        {
                            case "PING":
                                rwr.Write("PONG :" + trail + "\r\n");
                                outMsg("PING");
                                break;
                            default:
                                outMsg(line);
                                break;
                        }
                    }
                    else
                        outMsg("[e]"+line);

                }
                catch
                {
                    if (running && tries >= 3)
                    {
                        reset();
                        break;
                    }
                    tries++;
                }
            }
        }
        static void outMsg(string line)
        {
            Console.ForegroundColor = ConsoleColor.Red;
            Console.WriteLine(line);
            Console.ResetColor();
        }
    }
}