/*
 * Copyright (c) 2015 jMonkeyEngine
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 * * Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 *
 * * Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in the
 *   documentation and/or other materials provided with the distribution.
 *
 * * Neither the name of 'jMonkeyEngine' nor the names of its contributors
 *   may be used to endorse or promote products derived from this software
 *   without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

package com.jme3.network.service;

import com.jme3.network.ConnectionListener;
import com.jme3.network.HostedConnection;
import com.jme3.network.Server;


/**
 *  Manages HostedServices on behalf of a network Server object.
 *  All HostedServices are automatically informed about new and 
 *  leaving connections.
 *
 *  @author    Paul Speed
 */
public class HostedServiceManager extends ServiceManager<HostedServiceManager> {
    
    private Server server;
    private ConnectionObserver connectionObserver;

    /**
     *  Creates a HostedServiceManager for the specified network Server.
     */    
    public HostedServiceManager( Server server ) {
        this.server = server;
        this.connectionObserver = new ConnectionObserver();
        server.addConnectionListener(connectionObserver);
    }

    /**
     *  Returns the network Server associated with this HostedServiceManager.
     */
    public Server getServer() {
        return server;
    }

    /**
     *  Returns 'this' and is what is passed to HostedService.initialize()
     *  and HostedService.termnate();
     */
    @Override
    protected final HostedServiceManager getParent() {
        return this;
    }
 
    /**
     *  Adds the specified HostedService and initializes it.  If the service manager
     *  has already been started then the service will also be started.
     */   
    public void addService( HostedService s ) {
        super.addService(s);
    }

    /**
     *  Adds all of the specified HostedServices and initializes them.  If the service manager
     *  has already been started then the services will also be started.
     *  This is a convenience method that delegates to addService(), thus each
     *  service will be initialized (and possibly started) in sequence rather
     *  than doing them all at the end.
     */   
    public void addServices( HostedService... services ) {
        for( HostedService s : services ) {
            super.addService(s);
        }
    }

    /**
     *  Removes the specified HostedService from this service manager, stopping
     *  and terminating it as required.  If this service manager is in a
     *  started state then the service will be stopped.  After removal,
     *  the service will be terminated.
     */
    public void removeService( HostedService s ) {
        super.removeService(s);
    }
    
    /**
     *  Called internally when a new connection has been added so that the
     *  services can be notified.
     */
    protected void addConnection( HostedConnection hc ) {
        for( Service s : getServices() ) {
            ((HostedService)s).connectionAdded(server, hc);
        }
    }
 
    /**
     *  Called internally when a connection has been removed so that the
     *  services can be notified.
     */   
    protected void removeConnection( HostedConnection hc ) {
        for( Service s : getServices() ) {
            ((HostedService)s).connectionRemoved(server, hc);
        }
    }
 
    protected class ConnectionObserver implements ConnectionListener {

        @Override
        public void connectionAdded(Server server, HostedConnection hc) {
            addConnection(hc);
        }

        @Override
        public void connectionRemoved(Server server, HostedConnection hc) {
            removeConnection(hc);
        }
    }
}