/**
    * This file Copyright (c) 2003-2015 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.freemarker.models;
  
  import info.magnolia.cms.beans.runtime.FileProperties;
  import info.magnolia.cms.core.NodeData;
  
  import java.text.ParseException;
  import java.text.SimpleDateFormat;
  import java.util.ArrayList;
  import java.util.Iterator;
  
  import javax.jcr.RepositoryException;
  
  import org.apache.commons.lang.StringUtils;
  
  import freemarker.template.AdapterTemplateModel;
  import freemarker.template.TemplateCollectionModel;
  import freemarker.template.TemplateHashModelEx;
  import freemarker.template.TemplateModel;
  import freemarker.template.TemplateModelException;
  import freemarker.template.TemplateScalarModel;
  
  /**
   * TODO : review this !
   */
  public class BinaryNodeDataModel implements TemplateHashModelEx, TemplateScalarModel, AdapterTemplateModel {
      private final NodeData binaryNodeData;
      private final MagnoliaObjectWrapper wrapper;
  
      BinaryNodeDataModel(NodeData binaryNodeData, MagnoliaObjectWrapper wrapper) {
          this.binaryNodeData = binaryNodeData;
          this.wrapper = wrapper;
      }
  
      @Override
      public int size() throws TemplateModelException {
          int result = 0;
  
          try {
              result = binaryNodeData.getAttributeNames().size();
          } catch (RepositoryException e) {
              // don't care
          }
  
          return result;
      }
  
      @Override
      public TemplateCollectionModel keys() throws TemplateModelException {
          Iterator<String> result = null;
          try {
              result = binaryNodeData.getAttributeNames().iterator();
          } catch (RepositoryException e) {
              // don't care
          }
          return (TemplateCollectionModel) wrapper.wrap(result);
      }
  
      @Override
      public TemplateCollectionModel values() throws TemplateModelException {
          ArrayList<String> result = new ArrayList<String>();
          try {
              Iterator<String> iter = binaryNodeData.getAttributeNames().iterator();
              while (iter.hasNext()) {
                  result.add(iter.next());
              }
          } catch (RepositoryException e) {
             // don't care
         }
         return (TemplateCollectionModel) wrapper.wrap(result.iterator());
     }
 
     @Override
     public TemplateModel get(String key) throws TemplateModelException {
         Object result = null;
 
         if (key.startsWith("@")) {
             if (key.equals("@handle")) {
                 result = binaryNodeData.getHandle();
             }
         } else if (key.equals(FileProperties.CONTENT_TYPE)) {
             result = binaryNodeData.getAttribute(FileProperties.PROPERTY_CONTENTTYPE);
         } else if (key.equals(FileProperties.NAME)) {
             String filename = binaryNodeData.getAttribute(FileProperties.PROPERTY_FILENAME);
             String ext = binaryNodeData.getAttribute(FileProperties.PROPERTY_EXTENSION);
             result = filename + ((StringUtils.isEmpty(ext)) ? "" : "." + ext);
         } else if (key.equals(FileProperties.PROPERTY_FILENAME)) {
             result = binaryNodeData.getAttribute(FileProperties.PROPERTY_FILENAME);
         } else if (key.equals(FileProperties.PROPERTY_EXTENSION)) {
             result = binaryNodeData.getAttribute(FileProperties.PROPERTY_EXTENSION);
         } else if (key.equals(FileProperties.PROPERTY_LASTMODIFIED)) {
             try {
                 SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");
                 result = format.parse(binaryNodeData.getAttribute(FileProperties.PROPERTY_LASTMODIFIED));
             } catch (ParseException e) {
                 // do nothing.
             }
         } else {
             result = binaryNodeData.getAttribute(key);
         }
         return wrapper.wrap(result);
     }
 
     @Override
     public boolean isEmpty() throws TemplateModelException {
         return (size() == 0);
     }
 
     // this reproduces the logic found in the cms out tag.
     @Override
     public String getAsString() throws TemplateModelException {
         String handle = binaryNodeData.getHandle();
         String filename = binaryNodeData.getAttribute(FileProperties.PROPERTY_FILENAME);
         String ext = binaryNodeData.getAttribute(FileProperties.PROPERTY_EXTENSION);
         return handle + "/" + filename + ((StringUtils.isEmpty(ext)) ? "" : "." + ext);
     }
 
     public NodeData asNodeData() {
         return this.binaryNodeData;
     }
 
     @Override
     public Object getAdaptedObject(Class hint) {
         return asNodeData();
     }
 }