// ========================================================================
   // Copyright (c) 2006-2011 Mort Bay Consulting Pty. Ltd.
   // ------------------------------------------------------------------------
   // All rights reserved. This program and the accompanying materials
   // are made available under the terms of the Eclipse Public License v1.0
   // and Apache License v2.0 which accompanies this distribution.
   // The Eclipse Public License is available at 
   // http://www.eclipse.org/legal/epl-v10.html
   // The Apache License v2.0 is available at
  // http://www.opensource.org/licenses/apache2.0.php
  // You may elect to redistribute this code under either of these licenses. 
  // ========================================================================
  package org.eclipse.jetty.osgi.equinoxtools;
  
  import javax.servlet.ServletException;
  
  import org.eclipse.jetty.osgi.equinoxtools.console.EquinoxChattingSupport;
  import org.eclipse.jetty.osgi.equinoxtools.console.EquinoxConsoleContinuationServlet;
  import org.eclipse.jetty.osgi.equinoxtools.console.EquinoxConsoleSyncServlet;
  import org.eclipse.jetty.osgi.equinoxtools.console.EquinoxConsoleWebSocketServlet;
  import org.eclipse.jetty.osgi.equinoxtools.console.WebConsoleSession;
  import org.eclipse.jetty.util.log.Log;
  import org.eclipse.jetty.util.log.Logger;
  import org.eclipse.osgi.framework.console.ConsoleSession;
  import org.osgi.framework.BundleActivator;
  import org.osgi.framework.BundleContext;
  import org.osgi.framework.ServiceReference;
  import org.osgi.service.http.HttpService;
  import org.osgi.service.http.NamespaceException;
  import org.osgi.util.tracker.ServiceTracker;
  import org.osgi.util.tracker.ServiceTrackerCustomizer;
  
  /**
   * When started will register on the HttpService 3 servlets for 3 different styles of equinox consoles.
   */
  public class WebEquinoxToolsActivator implements BundleActivator
  {
      private static final Logger LOG = Log.getLogger(WebEquinoxToolsActivator.class);
  
  
      private static BundleContext context;
      public static BundleContext getContext()
      {
          return context;
      }
  
      private HttpService _httpService;
      private ServiceTracker _tracker;
      private EquinoxChattingSupport _equinoxChattingSupport;
      
  
      /*
       * (non-Javadoc)
       * 
       * @see org.osgi.framework.BundleActivator#start(org.osgi.framework.BundleContext)
       */
      public void start(BundleContext bundleContext) throws Exception
      {
          WebEquinoxToolsActivator.context = bundleContext;
                  
          ServiceTrackerCustomizer httpServiceTrackerCustomizer = new ServiceTrackerCustomizer()
          {
              public void removedService(ServiceReference reference, Object service)
              {
                  _httpService = null;
              }
  
              public void modifiedService(ServiceReference reference, Object service)
              {
                  _httpService = (HttpService)context.getService(reference);
              }
  
              public Object addingService(ServiceReference reference)
              {
                  _httpService = (HttpService)context.getService(reference);
                  try
                  {
                      //TODO; some effort to use the same console session on the 2 async console servlets?
  
                      //websocket:
  //                    WebConsoleSession wsSession = new WebConsoleSession();
  //                    WebEquinoxConsoleActivator.context.registerService(ConsoleSession.class.getName(), wsSession, null);
  //                    EquinoxChattingSupport wsEquinoxChattingSupport = new EquinoxChattingSupport(wsSession);
                      _httpService.registerResources("/equinoxconsole/ws/index.html","/equinoxconsole/ws/index.html",null);
                      _httpService.registerServlet("/equinoxconsole/ws",new EquinoxConsoleWebSocketServlet(/*wsSession, wsEquinoxChattingSupport*/),null,null);
                      
                      //continuations:
  //                    WebConsoleSession contSession = new WebConsoleSession();
  //                    WebEquinoxConsoleActivator.context.registerService(ConsoleSession.class.getName(), contSession, null);
  //                    EquinoxChattingSupport contEquinoxChattingSupport = new EquinoxChattingSupport(contSession);
                      _httpService.registerResources("/equinoxconsole/index.html","/equinoxconsole/index.html",null);
                      _httpService.registerServlet("/equinoxconsole",new EquinoxConsoleContinuationServlet(/*contSession, contEquinoxChattingSupport*/),null,null);
                      
                      //legacy synchroneous; keep it in a separate console session.
                      WebConsoleSession syncSession = new WebConsoleSession();
                      WebEquinoxToolsActivator.context.registerService(ConsoleSession.class.getName(), syncSession, null);
                      _httpService.registerServlet("/equinoxconsole/sync",new EquinoxConsoleSyncServlet(syncSession),null,null);
                  }
                  catch (ServletException e)
                 {
                     LOG.warn(e);
                 }
                 catch (NamespaceException e)
                 {
                     LOG.warn(e);
                 }
                 return _httpService;
             }
         };
 
         _tracker = new ServiceTracker(context,HttpService.class.getName(),httpServiceTrackerCustomizer);
         _tracker.open();
     }
 
     /*
      * (non-Javadoc)
      * 
      * @see org.osgi.framework.BundleActivator#stop(org.osgi.framework.BundleContext)
      */
     public void stop(BundleContext bundleContext) throws Exception
     {
         _tracker.close();
         WebEquinoxToolsActivator.context = null;
     }
     
 
 }