/**
    * This file Copyright (c) 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.action;
  
  import info.magnolia.jcr.util.NodeNameHelper;
  import info.magnolia.jcr.util.NodeUtil;
  import info.magnolia.jcr.util.PropertyUtil;
  import info.magnolia.ui.api.action.AbstractAction;
  import info.magnolia.ui.api.action.ActionExecutionException;
  import info.magnolia.ui.contentapp.browser.context.ValueContext;
  import info.magnolia.ui.datasource.jcr.SupportsRenaming;
  import info.magnolia.ui.framework.datasource.components.SelectedItems;
  
  import java.util.Objects;
  
  import javax.inject.Inject;
  import javax.jcr.Item;
  import javax.jcr.Node;
  import javax.jcr.Property;
  import javax.jcr.RepositoryException;
  import javax.jcr.Session;
  
  /**
   * Action with a primary goal to trigger the JCR session save. Provided
   * JCR item might implement {@link SupportsRenaming} and then is renamed
   * if needed.
   */
  public class SaveSessionAction extends AbstractAction<SaveSessionActionDefinition> {
  
      private final Item jcrItem;
      private final NodeNameHelper nodeNameHelper;
  
      @Inject
      public SaveSessionAction(SaveSessionActionDefinition definition, ValueContext<Item> valueContext, NodeNameHelper nodeNameHelper) {
          super(definition);
          this.jcrItem = valueContext.current().value().flatMap(SelectedItems::getFirst).orElse(null);
          this.nodeNameHelper = nodeNameHelper;
      }
  
      @Override
      public void execute() throws ActionExecutionException {
          if (jcrItem == null) {
              return;
          }
  
          try {
              final Session session = jcrItem.getSession();
              handleJcrItemNameChange();
              session.save();
          } catch (RepositoryException e) {
              throw new ActionExecutionException("Failed to handle JCR item change saving...", e);
          }
      }
  
      private void handleJcrItemNameChange() throws RepositoryException {
          if (jcrItem instanceof SupportsRenaming) {
              final String pendingNewName = ((SupportsRenaming) jcrItem).getPendingNewName().orElse(null);
              if (pendingNewName != null && !Objects.equals(pendingNewName, jcrItem.getName())) {
                  final String sanitisedNewName = this.nodeNameHelper.getUniqueName(jcrItem.getParent(), pendingNewName);
                  if (jcrItem.isNode()) {
                      NodeUtil.renameNode((Node) jcrItem, sanitisedNewName);
                  } else {
                      PropertyUtil.renameProperty((Property) jcrItem, sanitisedNewName);
                  }
              }
          }
      }
  }