/**
    * 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.templating.imaging.parameters;
  
  import info.magnolia.cms.beans.runtime.FileProperties;
  import info.magnolia.jcr.util.PropertyUtil;
  import info.magnolia.module.site.SiteModule;
  import info.magnolia.objectfactory.Components;
  import info.magnolia.templating.imaging.VariationAwareImagingSupport;
  import info.magnolia.templating.imaging.variation.ImageOperationProvidingVariation;
  
  import javax.jcr.Binary;
  import javax.jcr.Node;
  import javax.jcr.RepositoryException;
  
  import org.apache.jackrabbit.JcrConstants;
  
  /**
   * Parameter implementation which is {@link info.magnolia.module.site.theme.Theme}-aware.
   */
  public class ThemeAwareParameter {
  
      private final String themeName;
  
      private final String variationName;
  
      private final Node node;
  
      public ThemeAwareParameter(String themeName, String variationName, Node node) {
          this.themeName = themeName;
          this.variationName = variationName;
          this.node = node;
      }
  
      public ImageOperationProvidingVariation getImageVariation() {
          final VariationAwareImagingSupport imaging = (VariationAwareImagingSupport) Components.getComponent(SiteModule.class).getTheme(themeName).getImaging();
          return (ImageOperationProvidingVariation) imaging.getVariations().get(variationName);
      }
  
      public Node getNode() {
          return node;
      }
  
      public Binary getBinary() throws RepositoryException {
          return node.getProperty(JcrConstants.JCR_DATA).getBinary();
      }
  
      public String getExtension() {
          // TODO if extension property isn't found log error and return null instead of empty string? Or return jpg?
          return PropertyUtil.getString(node, FileProperties.EXTENSION, "");
      }
  
      /**
       * {@link info.magnolia.module.site.theme.Theme}-aware cache path for imaging.
       *
       * @see info.magnolia.templating.imaging.parameters.ThemeAwareParameterCachingStrategy
       */
      public String getCachePath() {
          try {
              return "/" + themeName + "/" + variationName + "/" + node.getSession().getWorkspace().getName() + node.getPath();
          } catch (RepositoryException e) {
              // TODO log error and return null?
              return "";
          }
      }
  
      @Override
      public boolean equals(Object o) {
         if (this == o) return true;
         if (o == null || getClass() != o.getClass()) return false;
 
         ThemeAwareParameter that = (ThemeAwareParameter) o;
 
         if (!node.equals(that.node)) return false;
         if (!themeName.equals(that.themeName)) return false;
         if (!variationName.equals(that.variationName)) return false;
 
         return true;
     }
 
     @Override
     public int hashCode() {
         int result = themeName.hashCode();
         result = 31 * result + variationName.hashCode();
         result = 31 * result + node.hashCode();
         return result;
     }
 }