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/**
 *  BlueCove - Java library for Bluetooth
 *  Copyright (C) 2008-2009 Michael Lifshits
 *  Copyright (C) 2008-2009 Vlad Skarzhevskyy
 *
 *  Licensed to the Apache Software Foundation (ASF) under one
 *  or more contributor license agreements.  See the NOTICE file
 *  distributed with this work for additional information
 *  regarding copyright ownership.  The ASF licenses this file
 *  to you 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.
 *
 *  @author vlads
 *  @version $Id$
 */
package com.intel.bluetooth.rmi;

import java.rmi.Remote;
import java.rmi.RemoteException;
import java.rmi.registry.LocateRegistry;
import java.rmi.registry.Registry;
import java.rmi.server.UnicastRemoteObject;

import com.intel.bluetooth.BlueCoveConfigProperties;
import com.intel.bluetooth.DebugLog;

public class Server {

	static final int rmiRegistryPortDefault = 8090;

	static int rmiRegistryPort = rmiRegistryPortDefault;

	// Prevents GC
	private static Server server;

	private Registry registry = null;

	private Remote srv;

	public static void main(String[] args) {
		String port = null;
		for (int i = 0; i < args.length; i++) {
			if (args[i].equalsIgnoreCase("--port") && i < (args.length - 1)) {
				i++;
				port = args[i];
			} else if (args[i].equalsIgnoreCase("--help")) {
				help();
				return;
			} else {
				help();
				return;
			}
		}
		if (port == null) {
			port = System.getProperty(BlueCoveConfigProperties.PROPERTY_EMULATOR_PORT);
		}
		start(port);
	}

	private static void help() {
		StringBuffer usage = new StringBuffer();
		usage.append("Usage:\n java ").append(Server.class.getName());
		usage.append("[--port rmiListeningPort]");
		System.out.println(usage);
	}

	public static void start(String port) {
		if (server != null) {
			return;
		}
		server = new Server();
		server.run(port);
	}

	private void run(String port) {
		startRMIRegistry(port);
		startRMIService();

		DebugLog.debug("Emulator RMI Service listening on port " + rmiRegistryPort);

		// wait for RMI threads to start up
		try {
			Thread.sleep(2000);
		} catch (InterruptedException e) {
		}
	}

	private void startRMIRegistry(String port) {
		try {
			if ((port != null) && (port.length() > 0)) {
				rmiRegistryPort = Integer.parseInt(port);
			}
			registry = LocateRegistry.createRegistry(rmiRegistryPort);
		} catch (RemoteException e) {
			throw new Error("Fails to start RMIRegistry", e);
		}
	}

	private void startRMIService() {
		try {
			srv = new RemoteServiceImpl();
			if (srv instanceof UnicastRemoteObject) {
				registry.rebind(RemoteService.SERVICE_NAME, srv);
			} else {
				Remote stub = UnicastRemoteObject.exportObject(srv, 0);
				registry.rebind(RemoteService.SERVICE_NAME, stub);
			}
		} catch (RemoteException e) {
			e.printStackTrace();
		}
	}
}