/**
    * This file Copyright (c) 2014-2018 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.ui.contentapp.browser.action;
  
  import info.magnolia.event.EventBus;
  import info.magnolia.ui.api.action.AbstractAction;
  import info.magnolia.ui.api.action.ActionExecutionException;
  import info.magnolia.ui.api.event.AdmincentralEventBus;
  import info.magnolia.ui.api.event.ContentChangedEvent;
  import info.magnolia.ui.vaadin.integration.contentconnector.ContentConnector;
  import info.magnolia.ui.vaadin.integration.jcr.AbstractJcrNodeAdapter;
  import info.magnolia.ui.vaadin.integration.jcr.JcrItemAdapter;
  import info.magnolia.ui.vaadin.integration.jcr.JcrPropertyAdapter;
  import info.magnolia.ui.vaadin.integration.jcr.JcrPropertyItemId;
  
  import java.util.Set;
  
  import javax.inject.Inject;
  import javax.inject.Named;
  import javax.jcr.Node;
  import javax.jcr.RepositoryException;
  
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  import com.vaadin.v7.data.Item;
  import com.vaadin.v7.data.Property;
  
  /**
   * The SaveItemPropertyAction is a basic action for saving changes made with inplace-editing in the Configuration app.
   */
  public class SaveItemPropertyAction extends AbstractAction<SaveItemPropertyActionDefinition> {
  
      private static final Logger log = LoggerFactory.getLogger(SaveItemPropertyAction.class);
      private final EventBus eventBus;
      private final ContentConnector contentConnector;
      private final Object itemId;
      private final Object propertyId;
      private final Property<?> propertyDataSource;
  
      @Inject
      public SaveItemPropertyAction(SaveItemPropertyActionDefinition definition, @Named(AdmincentralEventBus.NAME) EventBus eventBus, ContentConnector contentConnector, Object... args) {
          super(definition);
          this.eventBus = eventBus;
          this.contentConnector = contentConnector;
          this.itemId = ((Set<Object>) args[0]).iterator().next();
          this.propertyId = args[1];
          this.propertyDataSource = (Property<?>) args[2];
      }
  
      @Override
      public void execute() throws ActionExecutionException {
  
          Item item = contentConnector.getItem(itemId);
          // we support only JCR item adapters
          if (!(item instanceof JcrItemAdapter)) {
              return;
          }
  
          Property itemProperty = item.getItemProperty(propertyId);
          itemProperty.setValue(propertyDataSource.getValue());
  
          // don't save if no value changes occurred on adapter
          if (!((JcrItemAdapter) item).hasChangedProperties()) {
              return;
          }
  
          if (item instanceof AbstractJcrNodeAdapter) {
             // Saving JCR Node, getting updated node first
             AbstractJcrNodeAdapter nodeAdapter = (AbstractJcrNodeAdapter) item;
             try {
                 // get modifications
                 Node node = nodeAdapter.applyChanges();
                 node.getSession().save();
             } catch (RepositoryException e) {
                 log.error("Could not save changes to node", e);
             }
 
         } else if (item instanceof JcrPropertyAdapter) {
             // Saving JCR Property, update it first
             JcrPropertyAdapter propertyAdapter = (JcrPropertyAdapter) item;
             try {
                 // get parent first because once property is updated, it won't exist anymore if the name changes
                 Node parent = propertyAdapter.getJcrItem().getParent();
 
                 // get modifications
                 propertyAdapter.applyChanges();
                 parent.getSession().save();
 
                 // update workbench selection in case the property changed name
                 JcrPropertyItemId newItemId = propertyAdapter.getItemId();
                 eventBus.fireEvent(new ContentChangedEvent(newItemId));
             } catch (RepositoryException e) {
                 log.error("Could not save changes to property", e);
             }
         }
     }
 
 }