/*
 * Copyright (c) 2008 Paul C. Buetow, vs@dev.buetow.org
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 *
 * All icons of the icons/ folder are 	under a Creative Commons
 * Attribution-Noncommercial-Share Alike License a CC-by-nc-sa.
 *
 * The icon's homepage is http://code.google.com/p/ultimate-gnome/
 */

package protocols.implementations;

import core.VSMessage;
import protocols.VSAbstractProtocol;

/**
 * The class VSPingPongProtocol, an implementation of the ping pong protocol.
 *
 * @author Paul C. Buetow
 */
public class VSPingPongProtocol extends VSAbstractProtocol {
    /** The serial version uid */
    private static final long serialVersionUID = 1L;

    /** The client counter. */
    private int clientCounter;

    /** The server counter. */
    private int serverCounter;

    /**
     * Instantiates a new ping pong protocol.
     */
    public VSPingPongProtocol() {
        super(VSAbstractProtocol.HAS_ON_CLIENT_START);
        setClassname(getClass().toString());
    }

    /* (non-Javadoc)
     * @see events.VSAbstractProtocol#onClientInit()
     */
    public void onClientInit() {
    }

    /* (non-Javadoc)
     * @see protocols.VSAbstractProtocol#onClientReset()
     */
    public void onClientReset() {
        clientCounter = 0;
    }

    /* (non-Javadoc)
     * @see protocols.VSAbstractProtocol#onClientStart()
     */
    public void onClientStart() {
        VSMessage message = new VSMessage();
        message.setBoolean("fromClient", true);
        message.setInteger("counter", ++clientCounter);
        super.sendMessage(message);
    }

    /* (non-Javadoc)
     * @see protocols.VSAbstractProtocol#onClientRecv(core.VSMessage)
     */
    public void onClientRecv(VSMessage recvMessage) {
        if (!recvMessage.getBoolean("fromServer"))
            return;

        super.log("message: " + recvMessage.getInteger("counter"));

        VSMessage message = new VSMessage();
        message.setBoolean("fromClient", true);
        message.setInteger("counter", ++clientCounter);
        super.sendMessage(message);
    }

    /* (non-Javadoc)
     * @see protocols.VSAbstractProtocol#onClientSchedule()
     */
    public void onClientSchedule() {
    }

    /* (non-Javadoc)
     * @see events.VSAbstractProtocol#onServerInit()
     */
    public void onServerInit() {
    }

    /* (non-Javadoc)
     * @see protocols.VSAbstractProtocol#onServerReset()
     */
    public void onServerReset() {
        serverCounter = 0;
    }

    /* (non-Javadoc)
     * @see protocols.VSAbstractProtocol#onServerRecv(core.VSMessage)
     */
    public void onServerRecv(VSMessage recvMessage) {
        if (!recvMessage.getBoolean("fromClient"))
            return;

        super.log("message: " + recvMessage.getInteger("counter"));

        VSMessage message = new VSMessage();
        message.setBoolean("fromServer", true);
        message.setInteger("counter", ++serverCounter);
        super.sendMessage(message);
    }

    /* (non-Javadoc)
     * @see protocols.VSAbstractProtocol#onServerSchedule()
     */
    public void onServerSchedule() {
    }

    /* (non-Javadoc)
     * @see protocols.VSAbstractProtocol#toString()
     */
    public String toString() {
        return super.toString() + "; Neue Nachricht da hinter";
    }
}