/* 
    * 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 org.esigate.extension;
  
  import java.util.Properties;
  
  import org.esigate.Driver;
  import org.esigate.events.Event;
  import org.esigate.events.EventDefinition;
  import org.esigate.events.EventManager;
  import org.esigate.events.IEventListener;
  import org.esigate.events.impl.RenderEvent;
  import org.esigate.renderers.ResourceFixupRenderer;
  import org.esigate.util.Parameter;
  import org.esigate.util.ParameterString;
  
  /**
   * Rewrites URLs found inside html pages.
   * 
   * @author Francois-Xavier Bonnet
   * 
   */
  public class ResourceFixup implements Extension, IEventListener {
  
      private static final Parameter<String> FIX_MODE = new ParameterString("fixMode", "relative");
      private boolean absolute;
  
      @Override
      public boolean event(EventDefinition id, Event event) {
  
          RenderEvent renderEvent = (RenderEvent) event;
          // Fix resources
          String baseUrl = renderEvent.getOriginalRequest().getBaseUrl().toString();
          String visibleBaseUrl = renderEvent.getOriginalRequest().getVisibleBaseUrl();
          ResourceFixupRenderer fixup =
                  new ResourceFixupRenderer(baseUrl, renderEvent.getRemoteUrl(), renderEvent.getOriginalRequest()
                          .getDriver().getUrlRewriter(), visibleBaseUrl, absolute);
  
          // Add fixup renderer as first renderer.
          renderEvent.getRenderers().add(0, fixup);
  
          // Continue processing
          return true;
      }
  
      @Override
      public void init(Driver driver, Properties properties) {
          absolute = "absolute".equalsIgnoreCase(FIX_MODE.getValue(properties));
          driver.getEventManager().register(EventManager.EVENT_RENDER_PRE, this);
      }
  
  }