/**
    * This file Copyright (c) 2013-2014 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.dam.app.assets.form.action;
  
  import info.magnolia.cms.core.Path;
  import info.magnolia.dam.jcr.AssetNodeTypes;
  import info.magnolia.jcr.util.NodeUtil;
  import info.magnolia.ui.form.EditorCallback;
  import info.magnolia.ui.form.EditorValidator;
  import info.magnolia.ui.form.action.SaveFormAction;
  import info.magnolia.ui.form.action.SaveFormActionDefinition;
  import info.magnolia.ui.vaadin.integration.jcr.JcrNewNodeAdapter;
  import info.magnolia.ui.vaadin.integration.jcr.JcrNodeAdapter;
  
  import javax.jcr.Node;
  import javax.jcr.RepositoryException;
  
  import org.apache.commons.lang.StringUtils;
  
  import com.vaadin.data.Item;
  
  /**
   * Action for saving asset.<br>
   * In case of new Asset, set : <br>
   * - Asset node name = file name <br>
   * - Asset name if empty = file name.
   * We currently can't rename the node on change.
   * This must be properly solved by passing the node identifier to {@link info.magnolia.ui.api.event.ContentChangedEvent}.
   * See MGNLUI-226.
   */
  public class SaveAssetFormAction extends SaveFormAction {
  
      public SaveAssetFormAction(SaveFormActionDefinition definition, Item item, EditorCallback callback, EditorValidator validator) {
          super(definition, (JcrNodeAdapter) item, callback, validator);
      }
  
      @Override
      protected void setNodeName(Node assetNode, JcrNodeAdapter item) throws RepositoryException {
  
          if (item instanceof JcrNewNodeAdapter) {
              // Get File Name
              Node resourceNode = AssetNodeTypes.AssetResource.getResourceNodeFromAsset(assetNode);
              String fileName = extractFileName(resourceNode);
  
              if (StringUtils.isNotBlank(fileName)) {
                  setAssetPropertyName(item, assetNode, fileName);
                  // set the node name
                  String newNodeName = generateUniqueNodeNameForAsset(assetNode, fileName);
  
                  item.setNodeName(newNodeName);
                  NodeUtil.renameNode(assetNode, newNodeName);
              }
          }
      }
  
      public static String extractFileName(Node resourceNode) throws RepositoryException {
          String fileName = StringUtils.EMPTY;
          if (resourceNode != null) {
              if (resourceNode.hasProperty(AssetNodeTypes.AssetResource.FILENAME) && StringUtils.isNotBlank(resourceNode.getProperty(AssetNodeTypes.AssetResource.FILENAME).getString())) {
                  fileName = resourceNode.getProperty(AssetNodeTypes.AssetResource.FILENAME).getString();
              }
          }
          return fileName;
      }
  
      public static void setAssetPropertyName(Item item, Node assetNode, String fileName) throws RepositoryException {
          // Set the Asset name property if empty
          if (item.getItemProperty(AssetNodeTypes.Asset.ASSET_NAME) == null ||
                 item.getItemProperty(AssetNodeTypes.Asset.ASSET_NAME).getValue() == null ||
                 StringUtils.isBlank(item.getItemProperty(AssetNodeTypes.Asset.ASSET_NAME).getValue().toString())) {
             assetNode.setProperty(AssetNodeTypes.Asset.ASSET_NAME, fileName);
         }
     }
 
     /**
      * Create a new Node Unique NodeName.
      */
     public static String generateUniqueNodeNameForAsset(final Node node, String newNodeName) throws RepositoryException {
         newNodeName = StringUtils.substringBeforeLast(newNodeName, ".");
         return Path.getUniqueLabel(node.getSession(), node.getParent().getPath(), Path.getValidatedLabel(newNodeName));
     }
 
 
 }