/*
    * Licensed to the Apache Software Foundation (ASF) under one
    * or more contributor license agreements.  See the NOTICE file
    * distributed with this work for additional information
    * regarding copyright ownership.  The ASF licenses this file
    * to you under the Apache License, Version 2.0 (the
    * "License"); you may not use this file except in compliance
    * with the License.  You may obtain a copy of the License at
    *
   *   http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing,
   * software distributed under the License is distributed on an
   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
   * KIND, either express or implied.  See the License for the
   * specific language governing permissions and limitations
   * under the License.
   */
  package org.apache.myfaces.webapp;
  
  import java.io.IOException;
  import java.util.logging.Level;
  import java.util.logging.Logger;
  
  import javax.faces.context.FacesContext;
  import javax.faces.webapp.FacesServlet;
  import javax.servlet.Servlet;
  import javax.servlet.ServletConfig;
  import javax.servlet.ServletContext;
  import javax.servlet.ServletException;
  import javax.servlet.ServletRequest;
  import javax.servlet.ServletResponse;
  
  import org.apache.myfaces.shared_impl.webapp.webxml.DelegatedFacesServlet;
  
  /**
   * Derived FacesServlet that can be used for debugging purpose
   * and to fix the Weblogic startup issue (FacesServlet is initialized before ServletContextListener).
   *
   * @author Manfred Geiler (latest modification by $Author$)
   * @version $Revision$ $Date$
   */
  public class MyFacesServlet implements Servlet, DelegatedFacesServlet
  {
      //private static final Log log = LogFactory.getLog(MyFacesServlet.class);
      private static final Logger log = Logger.getLogger(MyFacesServlet.class.getName());
  
      private final FacesServlet delegate = new FacesServlet();
      
      private FacesInitializer _facesInitializer;
      
      
      public void setFacesInitializer(FacesInitializer facesInitializer) // TODO who uses this method?
      {
          _facesInitializer = facesInitializer;
      }
  
      public void destroy()
      {
          delegate.destroy();
      }
  
      public ServletConfig getServletConfig()
      {
          return delegate.getServletConfig();
      }
  
      public String getServletInfo()
      {
          return delegate.getServletInfo();
      }
  
      public void init(ServletConfig servletConfig)
          throws ServletException
      {
          ServletContext servletContext = servletConfig.getServletContext();
          
          if (_facesInitializer == null)
          {
              _facesInitializer = FacesInitializerFactory.getFacesInitializer(servletContext);
          }
          
          // Create startup FacesContext before initializing
          FacesContext facesContext = _facesInitializer.initStartupFacesContext(servletContext);
                
          // Check, if ServletContextListener was already called
          Boolean b = (Boolean)servletContext.getAttribute(StartupServletContextListener.FACES_INIT_DONE);
          if (b == null || b.booleanValue() == false)
          {
              if(log.isLoggable(Level.WARNING))
              {
                  log.warning("ServletContextListener not yet called");
              }
              _facesInitializer.initFaces(servletConfig.getServletContext());
          }
          
          // Destroy startup FacesContext
          _facesInitializer.destroyStartupFacesContext(facesContext);
          
         delegate.init(servletConfig);
         log.info("MyFacesServlet for context '" + servletConfig.getServletContext().getRealPath("/")
                  + "' initialized.");
     }
     
     public void service(ServletRequest request, ServletResponse response)
             throws IOException, ServletException
     {
         if (log.isLoggable(Level.FINEST))
         {
             log.finest("MyFacesServlet service start");
         }
         delegate.service(request, response);
         if (log.isLoggable(Level.FINEST))
         {
             log.finest("MyFacesServlet service finished");
         }
     }
 
 }