/**
    * This file Copyright (c) 2008-2017 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.rssaggregator.templates.components;
  
  import info.magnolia.context.MgnlContext;
  import info.magnolia.jcr.util.ContentMap;
  import info.magnolia.jcr.util.PropertyUtil;
  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.Collection;
  import java.util.List;
  
  import javax.inject.Inject;
  import javax.jcr.Node;
  import javax.jcr.NodeIterator;
  import javax.jcr.RepositoryException;
  
  import org.apache.commons.lang3.StringUtils;
  import org.apache.jackrabbit.util.ISO9075;
  
  /**
   * Model class for combinedFeedParagraph.
   *
   * @param <RD> {@link TemplateDefinition}
   */
  public class CombinedFeedModel<RD extends TemplateDefinition> extends AbstractFeedModel<TemplateDefinition> {
  
      protected String orderBy = ORDER_BY_PUBLICATION_DATE;
      protected String sortDirection = SORT_DESCENDING;
  
      @Inject
      public CombinedFeedModel(Node content, RD definition, RenderingModel<?> parent, TemplatingFunctions templatingFunctions) {
          super(content, definition, parent, templatingFunctions);
      }
  
      @Override
      public String execute() {
          log.debug("Executing " + this.getClass().getName());
          return "success";
      }
  
      @Override
      public String getContextPath() {
          return MgnlContext.getContextPath();
      }
  
      public Collection<ContentMap> getEntries() {
          List<ContentMap> results = new ArrayList<>();
          try {
              String orderByNodeValue = PropertyUtil.getString(content, "orderBy");
              String sortDirectionNodeValue = PropertyUtil.getString(content, "direction");
              String link = PropertyUtil.getString(content, "link");
  
              if (StringUtils.isEmpty(orderByNodeValue)) {
                  orderByNodeValue = orderBy;
              }
  
              if (StringUtils.isEmpty(sortDirectionNodeValue)) {
                  sortDirectionNodeValue = sortDirection;
              }
  
              String queryString = "/jcr:root" + ISO9075.encodePath(link) + "/data[1]/*/* order by " + orderByNodeValue + " " + sortDirectionNodeValue;
              NodeIterator feeds = this.runQuery(queryString);
  
              while (feeds.hasNext()) {
                 Node feed = feeds.nextNode();
                 results.add(new ContentMap(feed));
             }
             log.debug("returning collection with {} items.", "" + results.size());
             return results;
         } catch (RepositoryException e) {
             log.error(e.getLocalizedMessage(), e);
         }
         return null;
     }
 
     public String getOrderBy() {
         return this.orderBy;
     }
 
     public void setOrderBy(String orderBy) {
         if (orderBy.equals(ORDER_BY_PUBLICATION_DATE) || orderBy.equals(ORDER_BY_TITLE_NAME)) {
             this.orderBy = orderBy;
         }
     }
 
     public String getSortDirection() {
         return this.sortDirection;
     }
 
     public void setSortDirection(String sortDirection) {
         if (sortDirection.equals(AbstractFeedModel.SORT_ASCENDING) || sortDirection.equals(AbstractFeedModel.SORT_DESCENDING)) {
             this.sortDirection = sortDirection;
         }
     }
 }