/**
    * This file Copyright (c) 2011 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.samples.model;
  
  import info.magnolia.cms.beans.config.ContentRepository;
  import info.magnolia.cms.core.DefaultContent;
  import info.magnolia.context.MgnlContext;
  import info.magnolia.jcr.util.ContentMap;
  import info.magnolia.jcr.util.SessionUtil;
  import info.magnolia.link.LinkUtil;
  import info.magnolia.rendering.model.RenderingModel;
  import info.magnolia.rendering.model.RenderingModelImpl;
  import info.magnolia.rendering.template.RenderableDefinition;
  
  import javax.jcr.Node;
  import javax.jcr.PathNotFoundException;
  import javax.jcr.RepositoryException;
  import javax.jcr.Session;
  import javax.jcr.ValueFormatException;
  
  /**
   * Resolving internal links, either identifier or path link.
   *
   * @version $Id$
   */
  public class InternalLinkModel extends RenderingModelImpl<RenderableDefinition> {
  
  
      public InternalLinkModel(Node content, RenderableDefinition definition, RenderingModel<?> parent) {
          super(content, definition, parent);
      }
  
      public ContentMap getTarget() throws ValueFormatException, PathNotFoundException, RepositoryException{
          return new LinkItem(content, "target").getNode();
      }
  
      public String getTargetLink() throws ValueFormatException, PathNotFoundException, RepositoryException{
          return new LinkItem(content, "target").getLink();
      }
  
      /**
       * Represents a Link.
       */
      public class LinkItem {
  
          private ContentMap targetContentMap = null;
          private Node targetNode = null;
          private String targetLink = null;
  
          //TODO cringele: should be refactored when LinkUtil returns Node (SCRUM-242)
          public LinkItem(Node componentNode, String propertyName) throws ValueFormatException, PathNotFoundException, RepositoryException{
              if(componentNode.hasProperty(propertyName)){
                  String targetValue = componentNode.getProperty(propertyName).getString();
                  Session session = MgnlContext.getJCRSession(ContentRepository.WEBSITE);
  
                  //Link by path
                  if(targetValue.startsWith("/")){
                      targetNode = SessionUtil.getNode(ContentRepository.WEBSITE, targetValue);
                  }
                  else {
                      //Link by identifier
                      targetNode = session.getNodeByIdentifier(targetValue);
                  }
                  if(targetNode != null) {
                      targetContentMap = new ContentMap(targetNode);
                      targetLink = LinkUtil.createLink(new DefaultContent(targetNode));
                  }
              }
 
         }
 
         public String getLink() {
             return targetLink;
         }
 
         public ContentMap getNode() {
             return targetContentMap;
         }
     }
 
 }