/***************************************************************************
 * 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);
    }
  }
}
