/**
    * This file Copyright (c) 2003-2012 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.fckeditor.pages;
  
  import info.magnolia.cms.beans.config.URI2RepositoryManager;
  import info.magnolia.context.MgnlContext;
  import info.magnolia.jcr.util.PropertyUtil;
  import info.magnolia.module.ModuleRegistry;
  import info.magnolia.module.admininterface.AdminTreeMVCHandler;
  import info.magnolia.module.admininterface.InvalidTreeHandlerException;
  import info.magnolia.module.admininterface.TemplatedMVCHandler;
  import info.magnolia.module.admininterface.TreeHandlerManager;
  import info.magnolia.module.fckeditor.FCKEditorModule;
  
  import java.util.Collection;
  
  import javax.jcr.Node;
  import javax.jcr.RepositoryException;
  import javax.servlet.http.HttpServletRequest;
  import javax.servlet.http.HttpServletResponse;
  
  import org.apache.commons.lang.StringUtils;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  
  /**
   * Repository browser page.
   * @author vsteller
   * @version $Id$
   *
   */
  public class RepositoryBrowserPage extends TemplatedMVCHandler {
  
      private final FCKEditorModule moduleConfig;
      private String selectedPath;
      private String selectedRepository;
      private String absoluteURI;
      private String imgAltText;
      private static Logger log = LoggerFactory.getLogger(RepositoryBrowserPage.class);
  
      public RepositoryBrowserPage(String name, HttpServletRequest request, HttpServletResponse response) {
          super(name, request, response);
          moduleConfig = (FCKEditorModule) ModuleRegistry.Factory.getInstance().getModuleInstance(FCKEditorModule.MODULE_FCKEDITOR);
      }
  
      public String resolveAbsoluteURI() {
          final String treeName = getSelectedRepository();
          if (StringUtils.isNotEmpty(treeName) && StringUtils.isNotEmpty(getSelectedPath())) {
              final URI2RepositoryManager manager = URI2RepositoryManager.getInstance();
  
              String repoName;
              try {
                  final AdminTreeMVCHandler treeHandler = TreeHandlerManager.getInstance().getTreeHandler(treeName, request, response);
                  repoName = treeHandler.getRepository();
              } catch (InvalidTreeHandlerException e) {
                  // should never happen, but let's be careful with invalid configurations
                  // getSelectedRepository() returns the *tree* name
                  repoName = treeName;
              }
  
              final String absoluteURI = manager.getURI(repoName, getSelectedPath());
              setAbsoluteURI(MgnlContext.getContextPath() + absoluteURI);
  
              Node img = null;
              try {
                  img = MgnlContext.getJCRSession(getSelectedRepository()).getNode(getSelectedPath());
              } catch (RepositoryException e) {
                 log.warn("Error obtaining node [" + getSelectedPath() + "] from repository [" + getSelectedPath() + "]");
             }
             if (img != null) {
                 final String imgAltText = PropertyUtil.getString(img, "subject", "");
                 setImgAltText(imgAltText);
             }
         } else {
             setAbsoluteURI(StringUtils.EMPTY);
         }
 
         return "submit";
     }
 
     public String select() {
         final URI2RepositoryManager manager = URI2RepositoryManager.getInstance();
 
         if (StringUtils.isNotEmpty(absoluteURI)) {
             String absoluteURIWithoutContextPath = StringUtils.removeStart(absoluteURI, MgnlContext.getContextPath());
             final String repository = manager.getRepository(absoluteURIWithoutContextPath);
             final String path = manager.getHandle(absoluteURIWithoutContextPath);
 
             setSelectedRepository(repository);
             setSelectedPath(path);
         }
 
         return "select";
     }
 
     // TODO This is actually a collection of tree names
     public Collection getRepositories() {
         return moduleConfig.getBrowsableRepositories();
     }
 
     public String getSelectedPath() {
         return selectedPath;
     }
 
     public void setSelectedPath(String selectedPath) {
         this.selectedPath = selectedPath;
     }
 
     // TODO this is actually a tree name
     public String getSelectedRepository() {
         return selectedRepository;
     }
 
     // TODO this is actually a tree name
     public void setSelectedRepository(String selectedRepository) {
         this.selectedRepository = selectedRepository;
     }
 
     public String getAbsoluteURI() {
         return absoluteURI;
     }
 
     public void setAbsoluteURI(String absoluteURI) {
         this.absoluteURI = absoluteURI;
     }
 
     public String getImgAltText() {
         return this.imgAltText;
     }
 
     public void setImgAltText(String text) {
         this.imgAltText = text;
     }
 }