using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Net;
using System.Net.Sockets;
using System.Runtime.InteropServices;
using System.Text;
using System.Threading;
using System.Windows.Forms;


namespace chatCli
{
  public partial class Client : Form
  {
    private bool bConnected;
    static MyQueue<string> sms;
    static Thread listenerThread;
    static TcpListener listener;


    //  constructor
    public Client()
    {
      InitializeComponent();

      bConnected = false;
      sms = new MyQueue<string>();
      listener = null;

    }


    protected void ListenerThread()
    {
      if (bConnected) return;

      int port = 0;
      string server = tb_dns_ip.Text;

      if (port_c.Text == "")
      {
        MessageBox.Show("You must enter a port number.", "Port Error",
          MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
      }

      while (port < 2000 || port > 0xfffe)
      {
        try
        {
          port = Convert.ToInt32(port_c.Text);
          if (port < 2000 || port > 0xfffe)
          {
            MessageBox.Show("Port number must be:\n1999 < n < 0xfffe",
              "Port Error",
              MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
            port_c.Text = ""; port = 0;
          }
        }
        catch
        {
          labelConnected.Text = "Port is incorrect";
          return;
        }
      }

      TcpClient client = new TcpClient();
      NetworkStream stream = null;
      try
      {
        client.Connect(server, port);
        stream = client.GetStream();
        string syn = "$Birdie 2 nest" + "$" + tb_nick.Text;
        byte[] buffer = new System.Text.UTF8Encoding(true).GetBytes(syn);
        stream.Write(buffer, 0, syn.Length);
        stream.Flush();
        stream.Close();
        //        userMsg.Text = Encoding.Unicode.GetString(buffer);
      }
      catch
      {
        labelConnected.Text = "Conn failed";
        return;
      }

    }


    private void buttonConnect_Click(object sender, EventArgs e)
    {
      listenerThread = new Thread(new ThreadStart(ListenerThread));
      listenerThread.IsBackground = true;
      listenerThread.Name = "Listener";
      listenerThread.Start();
    }





  } //  EOC

  //  ----------------------------

  internal class MyQueue<T> : Queue<string>
  {
    public override string ToString()
    {
      string result = "";
      foreach (string mystr in this)
        result += mystr;
      return result;
    }
  }


}