/**

 * 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());

                    }

                }

            }

        }

    }

}