/**
    * This file Copyright (c) 2013-2015 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.asset.model;
  
  import freemarker.template.AdapterTemplateModel;
  import freemarker.template.ObjectWrapper;
  import freemarker.template.SimpleCollection;
  import freemarker.template.TemplateCollectionModel;
  import freemarker.template.TemplateHashModelEx;
  import freemarker.template.TemplateModel;
  import freemarker.template.TemplateModelException;
  
  import info.magnolia.freemarker.models.MagnoliaModelFactory;
  import info.magnolia.freemarker.models.MagnoliaObjectWrapper;
  
  /**
   * A wrapper for Asset used in FTL to directly access properties (in particular
   * Metadata properties).
   * 
   */
  public class AssetMapModel implements TemplateHashModelEx, AdapterTemplateModel {
  
      /**
       * Implements a {@link PrioritizedMagnoliaModelFactory} in order to be able to configure it via {@link info.magnolia.freemarker.FreemarkerConfig}.
       */
      public static final class Factory implements MagnoliaModelFactory {
          @SuppressWarnings("rawtypes")
          @Override
          public Class factoryFor() {
              return AssetMap.class;
          }
  
          @Override
          public AdapterTemplateModel create(Object object, ObjectWrapper wrapper) {
              return new AssetMapModel((AssetMap) object, (MagnoliaObjectWrapper) wrapper);
          }
      };
  
      private AssetMap assetMap;
      private MagnoliaObjectWrapper wrapper;
  
      public AssetMapModel() {
      }
  
      public AssetMapModel(AssetMap assetMap, MagnoliaObjectWrapper wrapper) {
          this.assetMap = assetMap;
          this.wrapper = wrapper;
      }
  
      @Override
      public TemplateModel get(String key) throws TemplateModelException {
          return wrapper.wrap(assetMap.get(key));
      }
  
      @Override
      public boolean isEmpty() throws TemplateModelException {
          return (size() == 0);
      }
  
      @Override
      public int size() throws TemplateModelException {
          return assetMap.size();
      }
  
      @Override
      public TemplateCollectionModel keys() throws TemplateModelException {
          return new SimpleCollection(assetMap.keySet().iterator());
      }
 
     @Override
     public TemplateCollectionModel values() throws TemplateModelException {
         return (TemplateCollectionModel) wrapper.wrap(assetMap.values().iterator());
     }
 
     @SuppressWarnings("rawtypes")
     @Override
     public Object getAdaptedObject(Class hint) {
         return this.assetMap;
     }
 
 }