/*
* JBoss, Home of Professional Open Source.
* Copyright 2006, Red Hat Middleware LLC, and individual contributors
* as indicated by the @author tags. See the copyright.txt file in the
* distribution for a full listing of individual contributors. 
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/ 
package org.jboss.remoting3.test;

import java.io.IOException;
import java.net.ConnectException;
import java.net.InetSocketAddress;
import java.net.URI;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.LinkedBlockingQueue;
import java.util.concurrent.ThreadPoolExecutor;
import java.util.concurrent.TimeUnit;

import org.jboss.remoting3.Channel;
import org.jboss.remoting3.CloseHandler;
import org.jboss.remoting3.Connection;
import org.jboss.remoting3.Endpoint;
import org.jboss.remoting3.MessageInputStream;
import org.jboss.remoting3.OpenListener;
import org.jboss.remoting3.Registration;
import org.jboss.remoting3.Remoting;
import org.jboss.remoting3.remote.RemoteConnectionProviderFactory;
import org.jboss.remoting3.security.SimpleServerAuthenticationProvider;
import org.jboss.remoting3.spi.NetworkServerProvider;
import org.xnio.IoFuture;
import org.xnio.IoFuture.Status;
import org.xnio.IoUtils;
import org.xnio.OptionMap;
import org.xnio.Options;
import org.xnio.Sequence;
import org.xnio.Xnio;
import org.xnio.channels.AcceptingChannel;
import org.xnio.channels.ConnectedStreamChannel;

/**
 * 
 * @author <a href="kabir.khan@jboss.com">Kabir Khan</a>
 * @version $Revision: 1.1 $
 */
public class __KabirsPlayThing {

    protected Endpoint endpoint;
    protected ExecutorService executorService;
    private AcceptingChannel<? extends ConnectedStreamChannel> streamServer;
    private SimpleServerAuthenticationProvider provider;
    private Registration serviceRegistration;
    private Registration registration;
    private NetworkServerProvider networkServerProvider;

    private Connection connection;
    private Channel sendChannel;

    public static void main (String[] args)  throws Exception {
        __KabirsPlayThing thing = new __KabirsPlayThing();
        try {
            if (args.length > 0 && args[0].equals("server")) {
                thing.setupServer();
            } else {
                thing.connectClient();
            }
            
            System.out.println("Press <Enter> to exit");
            System.in.read();
        } finally {
            thing.close();
        }
    }
    
    private void setupServer()  throws Exception {
        setupRemoting();
        streamServer = networkServerProvider.createServer(new InetSocketAddress("::1", 30123), OptionMap.create(Options.SASL_MECHANISMS, Sequence.of("CRAM-MD5")), provider);
        endpoint.registerService("channel", new OpenListener() {
            
            @Override
            public void registrationTerminated() {
            }
            
            @Override
            public void channelOpened(final Channel channel) {
                channelStuff("Server", channel);
            }
        }, OptionMap.EMPTY);
    }
    
    private void connectClient() throws Exception{
        setupRemoting();
        IoFuture<Connection> futureConnection = endpoint.connect(new URI("remote://[::1]:30123"), OptionMap.EMPTY, "bob", "test", "pass".toCharArray());
        Status status = futureConnection.await(20000, TimeUnit.MILLISECONDS);
        if (status == Status.WAITING) {
            futureConnection.cancel();
            throw new ConnectException();
        }
        this.connection = futureConnection.get();
        IoFuture<Channel> futureChannel = connection.openChannel("channel", OptionMap.EMPTY);
        sendChannel = futureChannel.get();
        channelStuff("Client", sendChannel);

    }

    
    private void setupRemoting() throws Exception {
        executorService = new ThreadPoolExecutor(16, 16, 1L, TimeUnit.DAYS, new LinkedBlockingQueue<Runnable>());
        endpoint = Remoting.createEndpoint("test", executorService, OptionMap.EMPTY);
        Xnio xnio = Xnio.getInstance();
        registration = endpoint.addConnectionProvider("remote", new RemoteConnectionProviderFactory(xnio), OptionMap.create(Options.SSL_ENABLED, Boolean.FALSE));
        networkServerProvider = endpoint.getConnectionProviderInterface("remote", NetworkServerProvider.class);
        provider = new SimpleServerAuthenticationProvider();
        provider.addUser("bob", "test", "pass".toCharArray());
    }
    
    private void close() throws Exception {

        System.out.println("initiating close");
        if (sendChannel != null) {
            sendChannel.writeShutdown();
            
            //This causes it to hang forever
            sendChannel.awaitClosed();
        }
        IoUtils.safeClose(connection);
        IoUtils.safeClose(serviceRegistration);

        IoUtils.safeClose(streamServer);
        IoUtils.safeClose(endpoint);
        IoUtils.safeClose(registration);
        executorService.shutdown();
        executorService.awaitTermination(1L, TimeUnit.DAYS);
        executorService.shutdownNow();
    }
    
    private void channelStuff(final String channelName, final Channel channel) {
        System.out.println(channelName + " Channel opened");
        channel.addCloseHandler(new CloseHandler<Channel>() {
            public void handleClose(Channel closed) {
                System.out.println(channelName + " Channel close handler");
            }
        });
        channel.receiveMessage(new Channel.Receiver() {
            
            @Override
            public void handleMessage(Channel channel, MessageInputStream message) {
                try {
                    while (message.read() != -1) {
                    }
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
            
            @Override
            public void handleError(Channel channel, IOException error) {
                System.out.println(channelName + " Handled error");
                error.printStackTrace();
            }
            
            @Override
            public void handleEnd(Channel channel) {
                System.out.println(channelName + " Handled end");
                try {
                    channel.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        });
        
    }
}