/*
 * Created on 19 Jun 2006
 * Created by Paul Gardner
 * Copyright (C) 2006 Aelitis, All Rights Reserved.
 *
 * 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.
 * 
 * AELITIS, SAS au capital de 46,603.30 euros
 * 8 Allee Lenotre, La Grille Royale, 78600 Le Mesnil le Roi, France.
 *
 */

package org.gudy.azureus2.pluginsimpl.local.messaging;

import org.gudy.azureus2.core3.util.DirectByteBuffer;
import org.gudy.azureus2.core3.util.DirectByteBufferPool;

import com.aelitis.azureus.core.networkmanager.RawMessage;
import com.aelitis.azureus.core.networkmanager.impl.RawMessageImpl;
import com.aelitis.azureus.core.peermanager.messaging.Message;
import com.aelitis.azureus.core.peermanager.messaging.MessageStreamEncoder;

public class 
GenericMessageEncoder
	implements MessageStreamEncoder
{
	public RawMessage[] 
	encodeMessage( 
		Message _message )
	{
		GenericMessage	message = (GenericMessage)_message;
		
		DirectByteBuffer	payload = message.getPayload();
		
		if ( message.isAlreadyEncoded()){
			
			return( 
				new RawMessage[]{
					new RawMessageImpl( 
						message, 
						new DirectByteBuffer[]{ payload }, 
						RawMessage.PRIORITY_NORMAL, 
						true,	// send immediately 
						new Message[0] )});
			
		}else{
			
			DirectByteBuffer 	header = DirectByteBufferPool.getBuffer( DirectByteBuffer.AL_EXTERNAL, 4 );
			
			header.putInt( DirectByteBuffer.SS_MSG, payload.remaining( DirectByteBuffer.SS_MSG ));
			
			header.flip( DirectByteBuffer.SS_MSG );
			
			return( 
				new RawMessage[]{
					new RawMessageImpl( 
						message, 
						new DirectByteBuffer[]{ header, payload }, 
						RawMessage.PRIORITY_NORMAL, 
						true,	// send immediately 
						new Message[0] )});
		}
	}
}