namespace RemotingChat
{
    using System;
	using System.Runtime.Remoting;
	using System.Runtime.Remoting.Channels.TCP;
	using System.Threading;
	/// <summary>
    ///    Summary description for ChatImpl.
    /// </summary>
    //public delegate void Status(string strMessage);
    public class ChatImpl : Chat
    {
		public enum myActions
		{
			SEND_MESSAGE=0,
			SEND_QUIT=1,
			SEND_LISTALL=2
		}
		private ChatServerImpl cs;		//a reference to the server
		private String name = null;		//The user's name
		private ServerTalker st;		//Thread for handling message sending
		private Form1 frm=null;
		private string server=null;	
		public myActions myHandler;
		public string Server
		{
			set
			{
				server=value;
			}
		}
		public ChatImpl(Form1 frmClient)
		{
			this.frm=frmClient;
		}

		public void registerChatter()
		{
			TCPChannel chan = new TCPChannel();
			ChannelServices.RegisterChannel(chan);
			cs = (ChatServerImpl) Activator.GetObject(typeof(RemotingChat.ChatServerImpl), "tcp://" + server +":8085/SayHello");
			if (cs== null) 
				System.Console.WriteLine("Could not locate server");
			else 
			{
				cs.register(this,name);
				st = new ServerTalker(cs,name);
			}
		}
			
		
		public string Name
		{
			set
			{
				name=value;
			}
		}
	 	public bool handleEvent(myActions e,string strMessage)
		{
			bool flag=false;
			switch (e)
			{
				case myActions.SEND_MESSAGE :
					if(!st.addMessage(new Message(name,strMessage)))
					{
						frm.UpdateStatus("***Server Error***\n");
						return false;
					}
					else
					{
						return true;
					}
					break;
				case myActions.SEND_QUIT:
					st.addMessage(new Message("***"+name,"Logged off. Bye"));
					cs = null;
					return true;
					break;
				case myActions.SEND_LISTALL:
					this.getUserList();
					break;
				default:
					break;
			}
			return false;
		}
		
		public void sendMessage(Line l)
		{
		    if(!st.addMessage(new Message(name,l))) 
				frm.UpdateStatus("***Server Error***\n");
		}

		public void getUserList()
		{
			String[] users = null;
			string strUser=null;
			try 
			{
				users = cs.listChatters();
			} 
			catch (Exception e) 
			{
				users = new String[1];
				users[0] = "***Error";
				strUser=users[0];
			}

			for(int i = 0; i < users.Length; i++)
				strUser +="***"+users[i]+"\n";
			frm.UpdateStatus(strUser);
		}
		 public void chatNotify(Message m) 
		 {
			Monitor.Enter(this);
			if(m.getMessage()!=null)
				frm.UpdateStatus(m.getSender() + ": " +m.getMessage()+"\n");
			Monitor.Exit(this);
		 }

		public String getName(){
			return name;
		}
	
	}
}