/**
    * This file Copyright (c) 2008-2012 Magnolia International
    * Ltd.  (http://www.magnolia-cms.com). All rights reserved.
    *
    *
    * This file is dual-licensed under both the Magnolia
    * Network Agreement and the GNU General Public License.
    * You may elect to use one or the other of these licenses.
    *
   * This file is distributed in the hope that it will be
   * useful, but AS-IS and WITHOUT ANY WARRANTY; without even the
   * implied warranty of MERCHANTABILITY or FITNESS FOR A
   * PARTICULAR PURPOSE, TITLE, or NONINFRINGEMENT.
   * Redistribution, except as permitted by whichever of the GPL
   * or MNA you select, is prohibited.
   *
   * 1. For the GPL license (GPL), you can redistribute and/or
   * modify this file under the terms of the GNU General
   * Public License, Version 3, as published by the Free Software
   * Foundation.  You should have received a copy of the GNU
   * General Public License, Version 3 along with this program;
   * if not, write to the Free Software Foundation, Inc., 51
   * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
   *
   * 2. For the Magnolia Network Agreement (MNA), this file
   * and the accompanying materials are made available under the
   * terms of the MNA which accompanies this distribution, and
   * is available at http://www.magnolia-cms.com/mna.html
   *
   * Any modifications to this file must keep this entire header
   * intact.
   *
   */
  package info.magnolia.module.templatingkit.renderers;
  
  import info.magnolia.beanmerger.BeanMergerUtil;
  import info.magnolia.jcr.util.NodeUtil;
  import info.magnolia.jcr.wrapper.HTMLEscapingNodeWrapper;
  import info.magnolia.module.templatingkit.functions.STKTemplatingFunctions;
  import info.magnolia.module.templatingkit.sites.Site;
  import info.magnolia.module.templatingkit.templates.DefaultSTKTemplateConfiguration;
  import info.magnolia.module.templatingkit.templates.pages.STKPage;
  import info.magnolia.objectfactory.Components;
  import info.magnolia.rendering.context.RenderingContext;
  import info.magnolia.rendering.engine.RenderException;
  import info.magnolia.rendering.renderer.FreemarkerRenderer;
  import info.magnolia.rendering.template.RenderableDefinition;
  
  import java.util.Map;
  
  import javax.jcr.Node;
  
  import org.apache.jackrabbit.commons.JcrUtils;
  
  /**
   * Default STK renderer.
   * @author pbracher
   * @version $Id$
   */
  public class STKRenderer extends FreemarkerRenderer {
  
      @Override
      public void render(final RenderingContext renderingCtx, Map<String, Object> contextObjects) throws RenderException {
          Node content = renderingCtx.getCurrentContent();
  
          // FIXME for the time being we only render pages and areas but not components
          try {
              final Site site = getSite(content);
              RenderableDefinition renderableDefinition = renderingCtx.getRenderableDefinition();
              // merge in case of a page
              if (renderableDefinition instanceof STKPage) {
                  renderableDefinition = (RenderableDefinition) BeanMergerUtil.merge(renderableDefinition, site.getTemplates().getPrototype(), DefaultSTKTemplateConfiguration.getInstance());
              }
              // FIXME we should not push() if the definition is not merged
              renderingCtx.push(content, renderableDefinition);
              try{
                  super.render(renderingCtx, contextObjects);
              } finally {
                  renderingCtx.pop();
              }
          } catch (Exception e) {
              throw new RenderException(e);
          }
      }
  
      protected Site getSite(Node node) {
          final Site site = Components.getComponent(STKTemplatingFunctions.class).site();
          if(site == null){
              throw new IllegalStateException("No site configuration found for [" + JcrUtils.toString(node) + "]");
          }
          return site;
      }
  
      /**
       * Wraps the current content node before passing it to the model. Wrap the node with HTMLEscapingNodeWrapper before rendering (XSS protection)
       * @param content the actual content
       * @return the wrapped content
       */
      @Override
     protected Node wrapNodeForModel(Node content) {
         content = super.wrapNodeForModel(content);
         content = wrapWithHTMLEscapingWrapper(content);
         return content;
     }
 
     protected Node wrapWithHTMLEscapingWrapper(Node content) {
         if (!NodeUtil.isWrappedWith(content, HTMLEscapingNodeWrapper.class)) {
             content = new HTMLEscapingNodeWrapper(content, true);
         }
         return content;
     }
 }