/**
    * This file Copyright (c) 2015-2018 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.workbench.thumbnail;
  
  import info.magnolia.jcr.util.NodeTypes;
  import info.magnolia.jcr.util.NodeUtil;
  import info.magnolia.ui.imageprovider.ImageProvider;
  import info.magnolia.ui.vaadin.integration.contentconnector.JcrContentConnectorDefinition;
  import info.magnolia.ui.vaadin.integration.contentconnector.NodeTypeDefinition;
  import info.magnolia.ui.vaadin.layout.data.PagingThumbnailContainer;
  import info.magnolia.ui.workbench.container.Refreshable;
  import info.magnolia.ui.workbench.list.FlatJcrContainer;
  
  import java.util.ArrayList;
  import java.util.Collection;
  import java.util.List;
  
  import javax.jcr.Item;
  import javax.jcr.Node;
  import javax.jcr.RepositoryException;
  
  import org.apache.commons.lang3.StringUtils;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  import com.google.common.collect.ImmutableSet;
  import com.vaadin.v7.data.Property;
  import com.vaadin.v7.data.util.AbstractProperty;
  
  /**
   * JCR implementation of {@link ThumbnailContainer} delegating to a {@link FlatJcrContainer}.
   */
  public class JcrThumbnailContainer extends FlatJcrContainer implements Refreshable, PagingThumbnailContainer {
  
      public static final String THUMBNAIL_PROPERTY_ID = "thumbnail";
  
      private static final Logger log = LoggerFactory.getLogger(JcrThumbnailContainer.class);
  
      private final ImageProvider imageProvider;
  
      public JcrThumbnailContainer(ImageProvider imageProvider, final JcrContentConnectorDefinition definition) {
          super(definition);
          this.imageProvider = imageProvider;
      }
  
      // FILTERING OF JCR NODE-TYPES TO BE DISPLAYED AS THUMBNAILS
  
      @Override
      protected String getQueryWhereClauseNodeTypes() {
          List<String> defs = new ArrayList<>();
          for (NodeTypeDefinition type : getConfiguration().getNodeTypes()) {
              if (type.isHideInList() || NodeTypes.Folder.NAME.equals(type.getName())) {
                  log.debug("Skipping {} node type. Nodes of such type won't be searched for.", type.getName());
                  continue;
              }
              defs.add("[jcr:primaryType] = '" + type.getName() + "'");
          }
          return StringUtils.join(defs, " or ");
      }
  
      @Override
      public int indexOfId(Object itemId) {
          if (!containsId(itemId)) {
              return -1;
          }
          return super.indexOfId(itemId);
      }
  
     @Override
     public boolean containsId(Object itemId) {
         final Item item = getJcrItem(itemId);
         if (!item.isNode()) {
             return super.containsId(itemId);
         }
 
         Node node = (Node) item;
         try {
             if (!getConfiguration().isIncludeSystemNodes() && node.getName().startsWith("jcr:") || node.getName().startsWith("rep:")) {
                 return false;
             }
 
             String primaryNodeTypeName = node.getPrimaryNodeType().getName();
             for (NodeTypeDefinition nodeTypeDefinition : getConfiguration().getNodeTypes()) {
                 if (nodeTypeDefinition.isStrict()) {
                     if (primaryNodeTypeName.equals(nodeTypeDefinition.getName())) {
                         return true;
                     }
                 } else if (NodeUtil.isNodeType(node, nodeTypeDefinition.getName())) {
                     return true;
                 }
             }
 
         } catch (RepositoryException e) {
             log.error("Failed to check presence of {} in container", itemId, e);
         }
         return false;
     }
 
     // SUPPORT OF THE THUMBNAIL CONTAINER PROPERTY
 
     @Override
     public Collection<?> getContainerPropertyIds() {
         return ImmutableSet.builder().addAll(super.getContainerPropertyIds()).add(THUMBNAIL_PROPERTY_ID).build();
     }
 
     @Override
     public Property getContainerProperty(Object itemId, Object propertyId) {
         if (THUMBNAIL_PROPERTY_ID.equals(propertyId)) {
             return new ThumbnailContainerProperty(itemId, imageProvider);
         }
         return super.getContainerProperty(itemId, propertyId);
     }
 
     @Override
     public Class<?> getType(Object propertyId) {
         if (THUMBNAIL_PROPERTY_ID.equals(propertyId)) {
             return Object.class;
         }
         return super.getType(propertyId);
     }
 
     @Override
     public Object getThumbnailPropertyId() {
         return THUMBNAIL_PROPERTY_ID;
     }
 
     @Override
     public Property getThumbnailProperty(Object itemId) {
         return getContainerProperty(itemId, THUMBNAIL_PROPERTY_ID);
     }
 
     @Override
     public void setPageSize(int pageSize) {
         // TODO WHY 3?
         int pageLength = Double.valueOf(Math.ceil(pageSize / 3.0)).intValue();
         setPageLength(pageLength);
         setCacheRatio(3);
     }
 
     /**
      * ThumbnailContainer property. Can have a Resource or a String as value.
      */
     public class ThumbnailContainerProperty extends AbstractProperty<Object> {
 
         private Object resourceId;
 
         private final ImageProvider imageProvider;
 
         public ThumbnailContainerProperty(final Object resourceId, ImageProvider imageProvider) {
             this.resourceId = resourceId;
             this.imageProvider = imageProvider;
         }
 
         @Override
         public Object getValue() {
             if (imageProvider == null) {
                 return null;
             }
             return imageProvider.getThumbnailResource(resourceId, ImageProvider.THUMBNAIL_GENERATOR);
         }
 
         @Override
         public void setValue(Object newValue) throws ReadOnlyException {
             this.resourceId = newValue;
         }
 
         @Override
         public Class<Object> getType() {
             return Object.class;
         }
     }
 
 }