/** Spela svenskmud i java.
@author Linus Tolke

Ide, starta tv} tr}dar
* en som l{ser fr}n ett java-f|nster och skickar till muddet.
* en som l{ser fr}n muddet och stoppar in i www-dokumentet.

Redirekta browsern till den applikationen.
http://localhost:8754/ (funkar detta)
 */

import java.net.*;
import java.awt.*;
import java.applet.*;
import java.io.*;

public class Mud extends Applet {
    public static int	PORT = 8754;
    MudControls controls;
    MudSession mudsession;
    WWWSession wwwsession;

    public void init() {
	setLayout(new BorderLayout());
	add("Center", controls = new MudControls(this));

	wwwsession = new WWWSession(this);
	mudsession = new MudSession(this);
    }

    public void start() {
	controls.enable();
    }

    public void stop() {
	controls.disable();
	mudsession.stop();
	wwwsession.stop();
    }

    public boolean handleEvent(Event e) {
	if (e.id == Event.WINDOW_DESTROY) {
	    System.exit(0);
	}
	return false;
    }

    synchronized public void send(String what)
    {
      /* H{r skall vi skicka sakerna till muddet. */
      mudsession.receive(what);
    }

    synchronized public void receive(String what)
    {
        /* H{r {r det muddet som skickat n}got. */
        wwwsession.receive(what);
    }

    public static void main(String args[]) {
	Frame f = new Frame("Mud");
	Mud	mud = new Mud();

	mud.init();
	mud.start();

	f.add("Center", mud);
	f.resize(500, 100);
	f.show();
    }
}
    

class MudControls extends Panel {
    TextField s;
    Mud mud;

    static String SEND = "Send";
    static String SLUTA = "Sluta";
    static String LE = "Le";
    static String DHARRY = "Döda Harry";

    public MudControls(Mud m) {
	this.mud = m;
	add(s = new TextField("", 50));
	add(new Button(this.SEND));
	add(new Button(this.SLUTA));
	add(new Button(this.LE));
	add(new Button(this.DHARRY));
    }

    public boolean action(Event ev, Object arg) {
	if (ev.target instanceof Button) {
	    String label = (String)arg;

	    if (label.trim() == this.SEND)
	    {
	        mud.send(s.getText().trim());
	    }
	    else if (label.trim() == this.SLUTA)
	    {
	        mud.send("sluta");
	    }
	    else
	    if (label.trim() == this.LE)
	    {
	        mud.send("le");
	    }
	    else
	    if (label.trim() == this.DHARRY)
	    {
	        mud.send("döda harry");
	    }

	    return true;
	}

	return false;
    }
}


class MudSession extends Thread {
    Mud mud;
    PrintStream out;

    public MudSession(Mud m)
    {
        mud = m;

	this.start();
    }

    public void receive(String what)
    {
        out.println(what);
	out.flush();
	mud.receive("> " + what);
    }

    public void run()
    {
	try {
	    /* Wait for Connect */
	    Socket socket = new Socket("svmud", 2046);

	    System.out.println("Connectad.");

	    String line;

	    DataInputStream in = new DataInputStream(socket.getInputStream());
	    out = new PrintStream(socket.getOutputStream());

	    System.out.println("Skapat str|mmarna.");

	    while (true)
	    {
	        line = in.readLine();
		if (line == null)
		{
		    System.out.println("Muddet st{ngde f|rbindelsen.");

		    break;
		}
		else if (line.length() > 2 
			 && line.charAt(0) == '>' && line.charAt(1) == ' ')
		{
		    line = line.substring(2);
		}
	        mud.receive(line);
	    }
	}
	catch (UnknownHostException e)
	{
	    System.out.println(e);
	}
	catch (IOException e)
	{
	    System.out.println(e);
	}

	mud.stop();
    }
}

class WWWSession extends Thread {
    PrintStream out;
    Mud mud;

    public WWWSession(Mud m)
    {
        mud = m;

	try {
	    /* Wait for Connect */
	    ServerSocket server = new ServerSocket(Mud.PORT);
	    Socket socket = server.accept();

	    out = new PrintStream(socket.getOutputStream());
	}
	catch (IOException e) {
	    System.out.println(e);
	}
    }

    public void receive(String what)
    {
        out.println(what + "<br>");
    }

    synchronized public void run()
    {
        try {
            wait();
	}
	catch (InterruptedException e) {
	    System.out.println(e);
	}
    }
}