/***************************************************************************
    * Copyright (C) 2003-2009 eXo Platform SAS.
    *
    * This program is free software; you can redistribute it and/or
    * modify it under the terms of the GNU Affero General Public License
    * as published by the Free Software Foundation; either version 3
    * of the License, or (at your option) any later version.
    *
    * This program is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   * GNU General Public License for more details.
   *
   * You should have received a copy of the GNU General Public License
   * along with this program; if not, see<http://www.gnu.org/licenses/>.
   *
   **************************************************************************/
  package org.exoplatform.ecm.webui.presentation.removeattach;
  
  
  import java.util.Map;
  
  import javax.jcr.Node;
  import javax.jcr.Session;
  
  import org.exoplatform.services.log.Log;
  import org.exoplatform.ecm.webui.presentation.AbstractActionComponent;
  import org.exoplatform.ecm.webui.presentation.action.UIPresentationEventListener;
  import org.exoplatform.ecm.webui.utils.JCRExceptionManager;
  import org.exoplatform.ecm.webui.utils.Utils;
  import org.exoplatform.services.cms.link.NodeFinder;
  import org.exoplatform.services.log.ExoLogger;
  import org.exoplatform.webui.application.WebuiRequestContext;
  import org.exoplatform.webui.config.annotation.ComponentConfig;
  import org.exoplatform.webui.config.annotation.EventConfig;
  import org.exoplatform.webui.core.UIApplication;
  
  /**
   * Created by The eXo Platform SARL
   * Author : Hoang Van Hung
   *          hunghvit@gmail.com
   * Sep 16, 2009
   */
  
  @ComponentConfig(events = {
      @EventConfig(listeners = RemoveAttachmentComponent.RemoveAttachActionListener.class,
                   confirm = "RemoveAttachmentComponent.msg.confirm-deleteattachment") }
  )
  
  public class RemoveAttachmentComponent extends AbstractActionComponent {
  
    private static final Log LOG = ExoLogger.getLogger(RemoveAttachmentComponent.class.getName());
  
    /**
     * Overide method UIComponent.loadConfirmMesssage() to get resource bundle in jar file
     */
    protected String loadConfirmMesssage(org.exoplatform.webui.config.Event event,
                                         WebuiRequestContext context,
                                         String beanId) {
      String confirmKey = event.getConfirm();
      if (confirmKey.length() < 1)
        return confirmKey;
      try {
        String confirm = Utils.getResourceBundle(Utils.LOCALE_WEBUI_DMS,
                                                 confirmKey,
                                                 getClass().getClassLoader());
        return confirm.replaceAll("\\{0\\}", beanId);
      } catch (Exception e) {
        return confirmKey;
      }
    }
  
    public static void doDelete(Map<String, Object> variables) throws Exception {
      AbstractActionComponent uicomponent = (AbstractActionComponent)variables.get(UICOMPONENT);
      UIApplication uiApp = uicomponent.getAncestorOfType(UIApplication.class);
      NodeFinder nodefinder = uicomponent.getApplicationComponent(NodeFinder.class);
      String wsname = String.valueOf(variables.get(Utils.WORKSPACE_PARAM));
      String nodepath = String.valueOf(variables.get(OBJECTID));
      WebuiRequestContext requestcontext = (WebuiRequestContext)variables.get(Utils.REQUESTCONTEXT);
      try {
          Node node = (Node) nodefinder.getItem(wsname, nodepath);
  
          // begin of lampt's modification.
          Session session = node.getSession();
          Node parentNode = null;
  
          // In case of node path begin with slash sign.
          if (nodepath.startsWith("/")) {
            if (node.hasProperty(Utils.JCR_DATA)) {
              node.setProperty(Utils.JCR_DATA, Utils.EMPTY);
              node.save();
            } else {
              parentNode = node.getParent();
              node.remove();
              parentNode.save();
            }
          } else {
            if (node.hasProperty(nodepath)) {
              node.setProperty(nodepath, Utils.EMPTY);
             node.save();
           }
         } // end of modification.
 
         session.save();
         uicomponent.updateAjax(requestcontext);
         return;
       } catch (Exception e) {
         if (LOG.isErrorEnabled()) {
           LOG.error("an unexpected error occurs while removing the node", e);
         }
         JCRExceptionManager.process(uiApp, e);        
         return;
       }
   }
 
   public static class RemoveAttachActionListener extends UIPresentationEventListener<RemoveAttachmentComponent> {
     @Override
     protected void executeAction(Map<String, Object> variables) throws Exception {
       RemoveAttachmentComponent.doDelete(variables);
     }
   }
 }