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

namespace timebot1
{
    class Program
    {
        public static TcpClient socket;
        public static StreamReader reader;
        public static StreamWriter writer;

        static bool running = true;

        static DateTime dtLaunched = DateTime.Now;

        static string
                username = "munnbot",
                host = "irc.freenode.net",
                desc = "munnbot",
                password = "hunter2",
                admin = "ATMunn",
                command_char = "$";

        static void Main()
        {
            try
            {
                socket = new TcpClient(host, 6667);
                socket.ReceiveBufferSize = 1024;
                Console.WriteLine("Connected");
                NetworkStream stream = socket.GetStream();
                reader = new StreamReader(stream);
                writer = new StreamWriter(stream);
                Send("USER " + username + " 8 * :" + desc);
                Send("NICK " + username);
                Send("PRIVMSG NickServ :identify " + password);
                Send("JOIN #atmunntest");
                ReadMessage(reader);
                reader.Close();
                writer.Close();
                stream.Close();
            }
            catch (Exception ex)
            {
                Console.WriteLine("Error: " + ex.Message);
            }
        }

        //shorthand command for sending to a specific target
        static void SendMessage(string target, string data)
        {
            Send("PRIVMSG " + target + " :" + data);
        }

        //general "send to network" command
        static void Send(string data)
        {
            try
            {
                writer.WriteLine(data);
                Console.WriteLine(">>> " + data);
                writer.Flush();
            }
            catch (Exception ex)
            {
                Console.WriteLine("Send error: " + ex.Message);
            }
        }

        static void ReadMessage(StreamReader reader)
        {
            try
            {
                while (running)
                {
                    string data = reader.ReadLine();
                    Console.WriteLine(DateTime.Now.ToString("HH:mm:ss ") + data);
                    string[] msgParts = data.Split(' ');

                    if (msgParts[0].ToLower() == "ping")
                    { //ping request
                        Send("PONG " + msgParts[1]);
                    }
                    else
                    {
                        string
                                user = msgParts[0].Split('!')[0].Substring(1),
                                cmd = msgParts[1].ToLower(),
                                target = msgParts[2];

                        switch (cmd)
                        {
                            case "join":
                                //user joined target
                                //if user == username, bot joined
                                break;
                            case "part":
                                //user left target
                                //if user == username, bot left
                                break;
                            case "nick":
                                //user changed their nick
                                break;
                            case "quit":
                                //user quit
                                break;
                            case "invite":
                                //bot was invited to target
                                break;
                            case "notice":
                                string msg = data.Split(":".ToCharArray(), 3)[2];
                                if (msg.Contains("You are now identified for "))
                                {
                                    //bot is identified
                                    SendMessage(admin, "I am authenticated.");
                                }
                                break;
                            case "privmsg":
                                //channel or private message
                                if(target == "munnbot")
                                {
                                    target = user;
                                }
                                ParseInput(user, target, data.Split(":".ToCharArray(), 3)[2]);
                                break;
                        }
                    }
                }
            }
            catch (Exception ex)
            {
                Console.WriteLine("Error: " + ex.Message);
                System.Threading.Thread.Sleep(15000);
                ReadMessage(reader);
            }
        }

        static void ParseInput(string user, string target, string msg)
        {
            if (msg.StartsWith(command_char))
            { //bot command
                string[] cmdParts = msg.Split(" ".ToCharArray(), 2);

                switch (cmdParts[0].Substring(1))
                {
                    case "uptime":
                        TimeSpan ts = DateTime.Now - dtLaunched;
                        SendMessage(target, string.Format("I have been running for {0}{1}{2}{3}",
                                ts.Days > 0 ? ts.Days.ToString() + "d " : "",
                                ts.Hours > 0 ? ts.Hours.ToString() + "h " : "",
                                ts.Minutes > 0 ? ts.Minutes.ToString() + "m " : "",
                                ts.Seconds.ToString() + "s"
                                ));
                        break;
                    case "hello":
                        SendMessage(target, string.Format("Greetings, {0}!", user));
                        break;
                    case "test":
                        SendMessage(target, string.Format("<{0}> $test", user));
                        break;
                    case "amiawesome":
                        SendMessage(target, string.Format("Of course you are, {0}.", user));
                        break;
                    case "rolldie":

                        string[] argParts = cmdParts[1].Split(" ".ToCharArray(), 2);

                        if (argParts.Length < 2)
                            SendMessage(target, "Not enough parameters.");
                        else
                        {
                            Random r = new Random();
                            int result = r.Next(int.Parse(argParts[0]), int.Parse(argParts[1]));
                            SendMessage(target, string.Format("You rolled {0}.", result));
                        }
                        break;
                    case "appendtofile":
                        File.AppendAllText(@"C:\Users\Public\IrcBots\munnbot\textfilething.txt", " " + cmdParts[1]);
                        SendMessage(target, string.Format("Appended \"{0}\" to the file.", cmdParts[1]));
                        break;
                    case "printfile":
                        SendMessage(target, File.ReadAllText(@"C:\Users\Public\IrcBots\munnbot\textfilething.txt"));
                        break;
                    case "help":
                        if (cmdParts.Length == 1)
                        {
                            switch(cmdParts[1])
                            {
                                case "uptime":
                                    SendMessage(target, "Sends the amount of time I have been running for.");
                                    break;
                                case "hello":
                                    SendMessage(target, "Greets the person who sends the command.");
                                    break;
                                case "test":
                                    SendMessage(target, "Just prints out whatever ATMunn decides to put there.");
                                    break;
                                case "amiawesome":
                                    SendMessage(target, "Tells you whether you are awesome or not.");
                                    break;
                                case "rolldie":
                                    SendMessage(target, "Syntax: $rolldie <min> <max>");
                                    System.Threading.Thread.Sleep(500);
                                    SendMessage(target, "Gives a random number between the <min> value and the <max> value.");
                                    break;
                                case "appendtofile":
                                    SendMessage(target, "Syntax: $appendtofile <text>");
                                    System.Threading.Thread.Sleep(500);
                                    SendMessage(target, "Appends whatever <text> is to the end of a file on ATMunn's computer.");
                                    break;
                                case "printfile":
                                    SendMessage(target, "Prints the current text in the file from appendtofile.");
                                    break;
                                case "help":
                                    SendMessage(target, "Gives a list of commands, or gives info on a specific command. (You're using it right now...)");
                                    break;
                                case "botfight":
                                    SendMessage(target, "Fights with timebot2.");
                                    break;
                            }
                        }
                        else
                        {
                            SendMessage(target, "Commands I respond to: uptime, hello, test, amiawesome, rolldie, appendtofile, printfile, help, botfight.");
                            System.Threading.Thread.Sleep(500);
                            SendMessage(target, "For more info on a specific command, type $help <commandname>");
                        }
                        break;
                    case "botfight":
                        SendMessage(target, "timebot2, you have so much code, you'd weigh 300 pounds if you were a physical bot!");
                        break;
                    case "quit":
                        if (user == admin)
                        {
                            Send("QUIT");
                            running = false;
                        }
                        break;
                }
            }
            else
            { // any other message
                string[] cmdParts = msg.Split(" ".ToCharArray(), 2);
                switch (cmdParts[0].Substring(1))
                {
                    case "HELP":
                        if (cmdParts.Length == 1)
                        {
                            SendMessage(target, "Currently incomplete.");
                        }
                        else
                        {
                            SendMessage(target, "Commands I respond to: uptime, hello, test, amiawesome, rolldie, appendtofile, printfile");
                            SendMessage(target, "For more info on a specific command, type /msg munnbot HELP <commandname>");
                        }
                        break;
                }
            }
        }
    }
}