/**
    * This file Copyright (c) 2013-2018 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.dialog.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.app.SubAppEventBus;
  import info.magnolia.ui.form.EditorCallback;
  import info.magnolia.ui.form.EditorValidator;
  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 info.magnolia.ui.workbench.event.SelectionChangedEvent;
  
  import java.util.Arrays;
  import java.util.HashSet;
  
  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;
  
  /**
   * The SaveConfigDialogAction is a special dialog commit action for saving configuration properties, when editing them in the Configuration app.
   */
  public class SaveConfigDialogAction extends AbstractAction<SaveConfigDialogActionDefinition> {
  
      private static final Logger log = LoggerFactory.getLogger(SaveConfigDialogAction.class);
  
      protected final Item item;
  
      protected final EditorValidator validator;
      protected final EditorCallback callback;
  
      private final EventBus eventBus;
  
      @Inject
      public SaveConfigDialogAction(SaveConfigDialogActionDefinition definition, Item item, EditorValidator validator, EditorCallback callback, final @Named(SubAppEventBus.NAME) EventBus eventBus) {
          super(definition);
          this.item = item;
          this.validator = validator;
          this.callback = callback;
          this.eventBus = eventBus;
      }
  
      @Override
      public void execute() throws ActionExecutionException {
          // First Validate
          validator.showValidation(true);
          if (validator.isValid()) {
  
              // we support only JCR item adapters
              if (!(item instanceof JcrItemAdapter)) {
                  return;
              }
  
              // 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
                 AbstractJcrNodeAdapteragnolia/ui/vaadin/integration/jcr/AbstractJcrNodeAdapter.html#AbstractJcrNodeAdapter">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
                 JcrPropertyAdapteragnolia/ui/vaadin/integration/jcr/JcrPropertyAdapter.html#JcrPropertyAdapter">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 SelectionChangedEvent(new HashSet<Object>(Arrays.asList(newItemId))));
 
                 } catch (RepositoryException e) {
                     log.error("Could not save changes to property", e);
                 }
             }
             callback.onSuccess(getDefinition().getName());
         } else {
             log.debug("Validation error(s) occurred. No save performed.");
         }
     }
 
 }