/*******************************************************************************
 * Copyright 2011 See AUTHORS file.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 ******************************************************************************/

package com.badlogic.gdx.net;

import java.io.InputStream;
import java.io.OutputStream;
import java.net.InetSocketAddress;

import com.badlogic.gdx.Net.Protocol;
import com.badlogic.gdx.net.ServerSocket;
import com.badlogic.gdx.net.ServerSocketHints;
import com.badlogic.gdx.net.Socket;
import com.badlogic.gdx.net.SocketHints;
import com.badlogic.gdx.utils.GdxRuntimeException;

/** Server socket implementation using java.net.ServerSocket.
 * 
 * @author noblemaster */
public class NetJavaServerSocketImpl implements ServerSocket {

	private Protocol protocol;

	/** Our server or null for disposed, aka closed. */
	private java.net.ServerSocket server;

	public NetJavaServerSocketImpl (Protocol protocol, int port, ServerSocketHints hints) {
		this(protocol, null, port, hints);
	}
	
	public NetJavaServerSocketImpl (Protocol protocol, String hostname, int port, ServerSocketHints hints) {
		this.protocol = protocol;

		// create the server socket
		try {
			// initialize
			server = new java.net.ServerSocket();
			if (hints != null) {
				server.setPerformancePreferences(hints.performancePrefConnectionTime, hints.performancePrefLatency,
					hints.performancePrefBandwidth);
				server.setReuseAddress(hints.reuseAddress);
				server.setSoTimeout(hints.acceptTimeout);
				server.setReceiveBufferSize(hints.receiveBufferSize);
			}

			// and bind the server...
			InetSocketAddress address;
			if( hostname != null ) {
				address = new InetSocketAddress(hostname, port); 
			} else {
				address = new InetSocketAddress(port);
			}
			
			if (hints != null) {
				server.bind(address, hints.backlog);
			} else {
				server.bind(address);
			}
		} catch (Exception e) {
			throw new GdxRuntimeException("Cannot create a server socket at port " + port + ".", e);
		}
	}

	@Override
	public Protocol getProtocol () {
		return protocol;
	}

	@Override
	public Socket accept (SocketHints hints) {
		try {
			return new NetJavaSocketImpl(server.accept(), hints);
		} catch (Exception e) {
			throw new GdxRuntimeException("Error accepting socket.", e);
		}
	}

	@Override
	public void dispose () {
		if (server != null) {
			try {
				server.close();
				server = null;
			} catch (Exception e) {
				throw new GdxRuntimeException("Error closing server.", e);
			}
		}
	}
}