/**

  * The MIT License (MIT)

  *

  * Copyright (C) 2013 Jaroslav Tulach <jaroslav.tulach@apidesign.org>

  *

  * Permission is hereby granted, free of charge, to any person obtaining a copy

  * of this software and associated documentation files (the "Software"), to deal

  * in the Software without restriction, including without limitation the rights

  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell

  * copies of the Software, and to permit persons to whom the Software is

  * furnished to do so, subject to the following conditions:

  *

  * The above copyright notice and this permission notice shall be included in

  * all copies or substantial portions of the Software.

  *

  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE

  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER

  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,

  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN

  * THE SOFTWARE.

  */

 package org.apidesign.demo.chat.server;

 import java.io.IOException;

 import java.net.Inet4Address;

 import java.net.InterfaceAddress;

 import java.net.NetworkInterface;

 import java.net.URI;

 import java.util.Enumeration;

 import javax.ws.rs.container.ContainerRequestContext;

 import javax.ws.rs.container.ContainerResponseContext;

 import javax.ws.rs.container.ContainerResponseFilter;

 import org.glassfish.grizzly.http.server.HttpServer;

 import org.glassfish.jersey.grizzly2.httpserver.GrizzlyHttpServerFactory;

 import org.glassfish.jersey.server.ResourceConfig;

 /** Starts REST server based on Jersey.

  */

 final class Main implements ContainerResponseFilter {

     public static void main(String... args) throws Exception {

         ResourceConfig rc = new ResourceConfig(

             ChatServerResource.class, Main.class

         );

         URI u = new URI("http://0.0.0.0:8080/");

         HttpServer server = GrizzlyHttpServerFactory.createHttpServer(u, rc);

         System.err.println("Server running on following IP addresses:");

         dumpIPs();

         System.err.println("Press Enter to shutdown the server");

         System.in.read();

         server.stop();

     }

     @Override

     public void filter(

         ContainerRequestContext requestContext, 

         ContainerResponseContext r

     ) throws IOException {

         r.getHeaders().add("Access-Control-Allow-Origin", "*");

         r.getHeaders().add("Access-Control-Allow-Credentials", "true");

         r.getHeaders().add("Access-Control-Allow-Headers", "Content-Type");

         r.getHeaders().add("Access-Control-Allow-Methods", "GET, POST, DELETE, PUT");

     }    

     private static void dumpIPs() throws Exception {

         Enumeration<NetworkInterface> en = NetworkInterface.getNetworkInterfaces();

         while (en.hasMoreElements()) {

             NetworkInterface n = en.nextElement();

             if (n.isUp()) {

                 for (InterfaceAddress i : n.getInterfaceAddresses()) {

                     if (i.getAddress() instanceof Inet4Address) {

                         System.err.println(n.getName() + ": " + i.getAddress());

                     }

                 }

             }

         }

     }

 }