/**
    * This file Copyright (c) 2008-2012 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.module.templatingkit.templates.components;
  
  import info.magnolia.dam.asset.Asset;
  import info.magnolia.dam.asset.DamAsset;
  import info.magnolia.module.templatingkit.functions.STKTemplatingFunctions;
  import info.magnolia.module.templatingkit.templates.AbstractSTKTemplateModel;
  import info.magnolia.rendering.model.RenderingModel;
  import info.magnolia.rendering.template.TemplateDefinition;
  import info.magnolia.templating.functions.TemplatingFunctions;
  
  import java.util.ArrayList;
  import java.util.List;
  
  import javax.inject.Inject;
  import javax.jcr.Node;
  import javax.jcr.RepositoryException;
  
  import org.apache.commons.lang.ArrayUtils;
  import org.apache.commons.lang.StringUtils;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  /**
   * STK Renderable Model definition dedicated to Image Gallery display.
   * 
   * @param <RD>
   *            the TemplateDefinition this model is operating on.
   * 
   * @version $Id$
   */
  public class ImageGalleryParagraphModel<RD extends TemplateDefinition> extends AbstractSTKTemplateModel<TemplateDefinition> {
  
      private static Logger log = LoggerFactory.getLogger(ImageGalleryParagraphModel.class);
  
      protected static final String[] ALLOWED_IMAGE_TYPES = new String[] { "gif", "jpg", "jpeg", "png" };
  
      @Inject
      public ImageGalleryParagraphModel(Node content, RD definition, RenderingModel<?> parent, STKTemplatingFunctions stkFunctions, TemplatingFunctions templatingFunctions) {
          super(content, definition, parent, stkFunctions, templatingFunctions);
      }
  
      public List<Asset> getImages() {
          List<Asset> images = new ArrayList<Asset>();
          List<DamAsset> imagesNotFiltered = stkFunctions.getAssetsFromFolder(content, "link");
          for (DamAsset asset : imagesNotFiltered) {
              if (showImage(asset)) {
                  images.add((Asset) asset);
              }
          }
          return images;
      }
  
      protected boolean showImage(DamAsset asset) {
          try {
              if (asset.getBinaryData().getBinary() != null && StringUtils.isNotBlank(asset.getFileExtension())) {
                  return ArrayUtils.contains(ALLOWED_IMAGE_TYPES, asset.getFileExtension().toLowerCase());
              }
          } catch (RepositoryException re) {
              log.warn("Not able to get the mime type of the asset node " + asset.getName());
          }
          return false;
      }
  }