/*
    * Copyright 2011 FatWire Corporation. All Rights Reserved.
    *
    * Licensed 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 com.fatwire.gst.foundation.groovy.context;
  
  import groovy.lang.GroovyClassLoader;
  
  import javax.servlet.ServletContext;
  
  import COM.FutureTense.Interfaces.ICS;
  
  import com.fatwire.gst.foundation.controller.AppContext;
  import com.fatwire.gst.foundation.controller.action.ActionLocator;
  import com.fatwire.gst.foundation.controller.action.Factory;
  import com.fatwire.gst.foundation.controller.action.Injector;
  import com.fatwire.gst.foundation.controller.action.support.ClassActionLocator;
  import com.fatwire.gst.foundation.controller.action.support.DefaultWebAppContext;
  import com.fatwire.gst.foundation.controller.action.support.RenderPageActionLocator;
  import com.fatwire.gst.foundation.controller.support.WebAppContextLoader;
  import com.fatwire.gst.foundation.groovy.GroovyElementCatalogLoader;
  import com.fatwire.gst.foundation.groovy.GroovyLoader;
  import com.fatwire.gst.foundation.groovy.action.GroovyActionLocator;
  
  /**
   * WebAppContext that is using Groovy to load Actions.
   * 
   * @author Dolf Dijkstra
   * @since 11 mei 2012
   * 
   */
  public class GroovyWebContext extends DefaultWebAppContext {
      private GroovyClassLoader classLoader;
  
      /**
       * This constructor is needed for the {@link WebAppContextLoader}.
       * 
       * @param context
       * @param app
       */
      public GroovyWebContext(ServletContext context, AppContext app) {
          super(context, app);
          classLoader = new GroovyClassLoader();
          String path = getServletContext().getRealPath("/WEB-INF/gsf-groovy");
          classLoader.addClasspath(path);
  
      }
  
      /* (non-Javadoc)
       * @see com.fatwire.gst.foundation.controller.action.support.DefaultWebAppContext#createActionLocator()
       */
      public ActionLocator createActionLocator() {
          // this method is expected to be called only once during the lifecycle
          // of the web app context, though more often does not need to be a
          // problem per se.
  
          // set up a chain of action locators
          // at the root level (if everything else fails), return a ActionLocator
          // that returns a RenderPage
          Injector injector = getBean("injector", Injector.class);
          ActionLocator root = getRootActionLocator(injector);
  
          GroovyLoader loader = getGroovyLoader();
          // next, set the groovy action loader
          GroovyActionLocator groovyLocator = new GroovyActionLocator(root, injector);
          groovyLocator.setGroovyLoader(loader);
          // and at last the class:<classname> loader
          final ClassActionLocator cal = new ClassActionLocator(groovyLocator, injector);
          return cal;
  
      }
  
      /**
       * @return GroovyLoader that looks at elementcatalog and /WEB-INF/gsf-groovy for groovy classes.
       */
      protected GroovyLoader getGroovyLoader() {
          return new GroovyElementCatalogLoader(getServletContext());
      }
  
      protected ActionLocator getRootActionLocator(Injector injector) {
          return new RenderPageActionLocator(injector);
      }
  
      @Override
      public Factory getFactory(ICS ics) {
          Factory base = super.getFactory(ics);
          GroovyFactory fg = new GroovyFactory(ics, getClassLoader(), base);
          return fg;
     }
 
     public ClassLoader getClassLoader() {
         return classLoader;
     }
 
 }