using System;
using System.Net.Sockets;
using System.Text;
using System.Threading;

class Client
{
    static void Main(string[] args)
    {
        if (args.Length == 0)
        {
            Console.WriteLine("Zadejte IP serveru.");
            return;
        }

        TcpClient client = new TcpClient();

        try
        {
            client.Connect(args[0], 65500);
            Console.WriteLine("Připojeno k serveru!");
        }
        catch (Exception ex)
        {
            Console.WriteLine("Nepodařilo se připojit: " + ex.Message);
        }

        NetworkStream stream = client.GetStream();

        Thread receiveThread = new Thread(() =>
        {
            byte[] buffer = new byte[4096];
            while (true)
            {
                try
                {
                    int read = stream.Read(buffer, 0, buffer.Length);
                    if (read == 0)
                        break;
                    Console.Clear();
                    Console.Write(Encoding.UTF8.GetString(buffer, 0, read));
                }
                catch
                {
                    break;
                }
            }
        });
        receiveThread.Start();

        while (true)
        {
            var key = Console.ReadKey(true).Key;
            string move = key switch
            {
                ConsoleKey.W => "W",
                ConsoleKey.S => "S",
                ConsoleKey.A => "A",
                ConsoleKey.D => "D",
                _ => "",
            };
            if (!string.IsNullOrEmpty(move))
            {
                byte[] data = Encoding.UTF8.GetBytes(move);
                stream.Write(data, 0, data.Length);
            }
        }
    }
}