/**
    * 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.dam.preview.imageprovider;
  
  import info.magnolia.link.LinkUtil;
  import info.magnolia.context.MgnlContext;
  import info.magnolia.jcr.util.NodeTypes;
  import info.magnolia.ui.imageprovider.DefaultImageProvider;
  import info.magnolia.ui.imageprovider.definition.ImageProviderDefinition;
  import info.magnolia.ui.vaadin.integration.contentconnector.ContentConnector;
  
  import java.util.Calendar;
  
  import javax.inject.Inject;
  import javax.jcr.Node;
  import javax.jcr.RepositoryException;
  
  import org.apache.commons.lang3.StringUtils;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  /**
   * This implementation of image provider, is able to provide portrait or thumbnail images only for objects of mime
   * type image/*. It will not store preview of image under the image node itself, instead it relies on imaging module
   * to generate and store the preview.
   */
  public class MultiGeneratorImageProvider extends DefaultImageProvider {
  
      private static final Logger log = LoggerFactory.getLogger(MultiGeneratorImageProvider.class);
  
      public final String ICON_CLASS_DEFAULT = "file";
  
      private MultiGeneratorImageProviderDefinition definition;
  
      private ContentConnector contentConnector;
  
      @Inject
      public MultiGeneratorImageProvider(ImageProviderDefinition definition, ContentConnector contentConnector) {
          super(definition, contentConnector);
          this.definition = (MultiGeneratorImageProviderDefinition) definition;
          this.contentConnector = contentConnector;
      }
  
      @Override
      protected String getGeneratorImagePath(String workspace, Node node, String defaultGenerator) {
          String imagePath = null;
  
          if (node != null) {
              try {
                  Node imageNode = node.getNode(definition.getOriginalImageNodeName());
  
                  if (imageNode.hasProperty("extension")) {
                      String ext = imageNode.getProperty("extension").getString();
                      String generator = definition.getGenerators().get(ext);
                      if (StringUtils.isNotBlank(generator)) {
                          defaultGenerator += "-" + generator;
                      }
                  }
                  String imageName;
                  if (imageNode.hasProperty("fileName")) {
                      imageName = imageNode.getProperty("fileName").getString();
                  } else {
                      imageName = node.getName();
                  }
  
                  imagePath = MgnlContext.getContextPath() + "/" + definition.getImagingServletPath() + "/" + defaultGenerator + "/" + workspace + "/" + imageNode.getIdentifier() + "/" + imageName + "." + definition.getImageExtension();
  
                  // Add cache fingerprint so that browser caches asset only until asset is modified.
                 Calendar lastModified = NodeTypes.LastModified.getLastModified(node);
                 imagePath = LinkUtil.addFingerprintToLink(imagePath, lastModified);
 
             } catch (RepositoryException e) {
                 log.warn("Could not get name or identifier from imageNode: {}", e.getMessage());
             }
         }
 
         return imagePath;
     }
 
     @Override
     protected boolean isImage(String mimeType) {
         return super.isImage(mimeType) || (mimeType != null && definition.getGenerators().keySet().contains(StringUtils.substringAfter(mimeType, "/").toLowerCase()));
     }
 }