using System;
using System.Net.Sockets;
using System.Threading;
using IRCTokens;
// ReSharper disable StringLiteralTypo

namespace Tokens;

public class Client
{
    private readonly byte[] _bytes = new byte[1024];
    private readonly StatefulDecoder _decoder = new();
    private readonly StatefulEncoder _encoder = new();
    private readonly Socket _socket = new(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.IP);

    public void Start()
    {
        _socket.Connect("127.0.0.1", 6667);
        while (!_socket.Connected) Thread.Sleep(1000);

        Send(new("NICK", "tokensbot"));
        Send(new("USER", "tokensbot", "0", "*", "real name"));

        while (true)
        {
            var bytesReceived = _socket.Receive(_bytes);

            if (bytesReceived == 0)
            {
                Console.WriteLine("! disconnected");
                _socket.Shutdown(SocketShutdown.Both);
                _socket.Close();
                break;
            }

            var lines = _decoder.Push(_bytes, bytesReceived);

            foreach (var line in lines)
            {
                Console.WriteLine($"< {line.Format()}");

                switch (line.Command)
                {
                    case "PING":
                        Send(new("PONG", line.Params[0]));
                        break;
                    case "001":
                        Send(new("JOIN", "#irctokens"));
                        break;
                    case "PRIVMSG":
                        Send(new("PRIVMSG", line.Params[0], "hello there"));
                        break;
                }
            }
        }
    }

    private void Send(Line line)
    {
        Console.WriteLine($"> {line.Format()}");
        _encoder.Push(line);
        while (_encoder.PendingBytes.Length > 0)
            _encoder.Pop(_socket.Send(_encoder.PendingBytes, SocketFlags.None));
    }
}