using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.Threading;
using System.Net.Sockets;
using System.IO;
//-----------------------------------------------------------
//-----------------------------------------------------------

namespace Server
{
	/// <summary>
	/// Summary description for Form1.
	/// </summary>
	public class Form1 : System.Windows.Forms.Form
	{
		//private AxACTIVESKINLib.AxSkin axSkin1;
		private System.Windows.Forms.TextBox tmsg;
		private System.Windows.Forms.Button bsend;
		private System.Windows.Forms.GroupBox groupBox2;
		private System.Windows.Forms.GroupBox groupBox3;

		//--------------server connection variables ----------
		private Thread read;
		private NetworkStream stream;
		private BinaryReader reader;
		private BinaryWriter writer;
		private TcpListener listener;
		private Socket client;
		private System.Windows.Forms.PictureBox Box1;
		private System.Windows.Forms.RichTextBox tchat;
		//----------------------------------------------------
		private System.ComponentModel.Container components = null;

		public Form1()
		{
			InitializeComponent();
			read=new Thread(new ThreadStart(RunServer));
          //  read .s
			read.Start();
		}

		/// <summary>
		/// Clean up any resources being used.
		/// </summary>
		protected override void Dispose( bool disposing )
		{
			if( disposing )
			{
				if (components != null)
				{
					components.Dispose();
				}
			}
			base.Dispose( disposing );
		}

		#region Windows Form Designer generated code
		/// <summary>
		/// Required method for Designer support - do not modify
		/// the contents of this method with the code editor.
		/// </summary>
		private void InitializeComponent()
		{
            this.tmsg = new System.Windows.Forms.TextBox();
            this.bsend = new System.Windows.Forms.Button();
            this.groupBox2 = new System.Windows.Forms.GroupBox();
            this.tchat = new System.Windows.Forms.RichTextBox();
            this.groupBox3 = new System.Windows.Forms.GroupBox();
            this.Box1 = new System.Windows.Forms.PictureBox();
            this.groupBox2.SuspendLayout();
            ((System.ComponentModel.ISupportInitialize)(this.Box1)).BeginInit();
            this.SuspendLayout();
            //
            // tmsg
            //
            this.tmsg.Location = new System.Drawing.Point(24, 256);
            this.tmsg.Name = "tmsg";
            this.tmsg.Size = new System.Drawing.Size(320, 20);
            this.tmsg.TabIndex = 0;
            this.tmsg.KeyPress += new System.Windows.Forms.KeyPressEventHandler(this.tmsg_KeyPress);
            //
            // bsend
            //
            this.bsend.BackColor = System.Drawing.SystemColors.HighlightText;
            this.bsend.FlatStyle = System.Windows.Forms.FlatStyle.Flat;
            this.bsend.Location = new System.Drawing.Point(152, 296);
            this.bsend.Name = "bsend";
            this.bsend.Size = new System.Drawing.Size(48, 24);
            this.bsend.TabIndex = 3;
            this.bsend.Text = "&Send";
            this.bsend.UseVisualStyleBackColor = false;
            this.bsend.Click += new System.EventHandler(this.bsend_Click);
            //
            // groupBox2
            //
            this.groupBox2.Controls.Add(this.tchat);
            this.groupBox2.Location = new System.Drawing.Point(12, 64);
            this.groupBox2.Name = "groupBox2";
            this.groupBox2.Size = new System.Drawing.Size(340, 160);
            this.groupBox2.TabIndex = 5;
            this.groupBox2.TabStop = false;
            this.groupBox2.Text = "groupBox2";
            //
            // tchat
            //
            this.tchat.Font = new System.Drawing.Font("Microsoft Sans Serif", 8.25F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((byte)(178)));
            this.tchat.Location = new System.Drawing.Point(8, 24);
            this.tchat.Name = "tchat";
            this.tchat.ScrollBars = System.Windows.Forms.RichTextBoxScrollBars.ForcedVertical;
            this.tchat.Size = new System.Drawing.Size(320, 120);
            this.tchat.TabIndex = 0;
            this.tchat.Text = "";
            //
            // groupBox3
            //
            this.groupBox3.Location = new System.Drawing.Point(12, 240);
            this.groupBox3.Name = "groupBox3";
            this.groupBox3.Size = new System.Drawing.Size(340, 48);
            this.groupBox3.TabIndex = 6;
            this.groupBox3.TabStop = false;
            this.groupBox3.Text = "groupBox3";
            //
            // Box1
            //
            this.Box1.Location = new System.Drawing.Point(280, 8);
            this.Box1.Name = "Box1";
            this.Box1.Size = new System.Drawing.Size(72, 56);
            this.Box1.TabIndex = 7;
            this.Box1.TabStop = false;
            //
            // Form1
            //
            this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
            this.BackColor = System.Drawing.SystemColors.ActiveCaptionText;
            this.ClientSize = new System.Drawing.Size(360, 321);
            this.Controls.Add(this.Box1);
            this.Controls.Add(this.bsend);
            this.Controls.Add(this.tmsg);
            this.Controls.Add(this.groupBox2);
            this.Controls.Add(this.groupBox3);
            this.MaximumSize = new System.Drawing.Size(376, 360);
            this.MinimumSize = new System.Drawing.Size(376, 360);
            this.Name = "Form1";
            this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
            this.Text = "Server";
            this.Closing += new System.ComponentModel.CancelEventHandler(this.Form1_Closing);
            this.Load += new System.EventHandler(this.Form1_Load_1);
            this.groupBox2.ResumeLayout(false);
            ((System.ComponentModel.ISupportInitialize)(this.Box1)).EndInit();
            this.ResumeLayout(false);
            this.PerformLayout();

		}
		#endregion

		/// <summary>
		/// The main entry point for the application.
		/// </summary>
		[STAThread]
		static void Main()
		{
			Application.Run(new Form1());
		}
		//----------------------------------------------------------
		/* this function run server and waiting for
		 * a connection from the client
		 * then exchange data between them
		*/
		public void RunServer()
		{
			this.Box1.Image=Image.FromFile("2.jpg");
			try
			{
				//step 1: create TcpListener
				listener=new TcpListener(20000);
				// Step 2: TcpListener waits for connection request
				listener.Start();
				// Step 3: establish connection upon client request
				while(true)
				{
					tchat.Text="Waiting for new connection";
					// accept an incoming connection
					client=listener.AcceptSocket();
					// create NetworkStream object associated with socket
					stream=new NetworkStream(client);
					// create objects for transferring data across stream
					reader=new BinaryReader(stream);
					writer=new BinaryWriter(stream);
					// send client welcome msg
					writer.Write("Server :welcome to server");
					tchat.Text+="\r\n Server :welcome to server";
					string reply;
					// Step 4: read String data sent from client
					while(true)
					{
						try
						{
							//test if connection good
							if(client.Connected==false)
							{
								//client terminated
								break;
							}
							//Note : the function ReadString() will wait
							//until a message becomes available
							reply=reader.ReadString();
							/* to set the color to blue */
							int len=tchat.Text.Length;
							tchat.AppendText("\r\n Client  :"+reply);
							tchat.Select(len,11+reply.Length);
							tchat.SelectionColor=Color.Blue;
							tchat.ScrollToCaret();
						}
						// Step 5: close connection
						catch(Exception)
						{
							tchat.Text+="\r\n Client terminated";
							//close connection with the current client
							reader.Close();
							writer.Close();
							stream.Close();
							client.Close();

							break;
						}//end catch of the try that read string
					}//end while loop for reading
				}//end the while of the whole connection
			}//end of the try block of the whole connection
			catch(Exception)
			{
				MessageBox.Show(this,"Error connecting to client ",
					this.Text,MessageBoxButtons.OK,
					MessageBoxIcon.Error);
			}
		}

		private void Form1_Load(object sender, System.EventArgs e)
		{
			//axSkin1.ApplySkin((int)Handle);
		}

		private void Form1_Closing(object sender, System.ComponentModel.CancelEventArgs e)
		{
			//kill all resources of the server
			System.Environment.Exit( System.Environment.ExitCode );
		}

		private void tmsg_KeyPress(object sender, System.Windows.Forms.KeyPressEventArgs e)
		{
			string text=tmsg.Text;
			if(e.KeyChar=='\r' && client!=null)
			{
				int len=tchat.Text.Length;
				tchat.AppendText("\r\n Server :"+tmsg.Text);
				tchat.Select(len,10+tmsg.Text.Length);
				tchat.SelectionColor=Color.Red;
				writer.Write(tmsg.Text);
				tmsg.Clear();
				tchat.ScrollToCaret();
			}
		}

		private void bsend_Click(object sender, System.EventArgs e)
		{
			if( client!=null)
			{
				//int len=tchat.Text.Length;
				//tchat.AppendText("\r\n Server :"+tmsg.Text);
				//tchat.Select(len,10+tmsg.Text.Length);
				//tchat.SelectionColor=Color.Red;
				writer.Write(tmsg.Text);
				//tmsg.Clear();
				//tchat.ScrollToCaret();
			}
		}

        private void Form1_Load_1(object sender, EventArgs e)
        {

        }
    }
}