/**
    * This file Copyright (c) 2012-2013 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.blossom.template;
  
  import java.lang.annotation.Annotation;
  import java.util.ArrayList;
  import java.util.HashMap;
  import java.util.List;
  import java.util.Map;
  
  import org.springframework.util.LinkedMultiValueMap;
  import org.springframework.util.MultiValueMap;
  
  /**
   * Holds meta data built while detecting handlers.
   *
   * @see HandlerMetaData
   * @see TemplateExporter
   * @since 2.0
   */
  public class DetectedHandlersMetaData {
  
      private List<HandlerMetaData> templates = new ArrayList<HandlerMetaData>();
      private Map<Class<?>, List<HandlerMetaData>> areasByEnclosingClass = new HashMap<Class<?>, List<HandlerMetaData>>();
      private MultiValueMap<Class<? extends Annotation>, String> categoryUsages = new LinkedMultiValueMap<Class<? extends Annotation>, String>();
  
      public void addTemplate(HandlerMetaData handlerMetaData) {
          this.templates.add(handlerMetaData);
      }
  
      public List<HandlerMetaData> getTemplates() {
          return templates;
      }
  
      public void addArea(HandlerMetaData handler) {
          Class<?> enclosingClass = handler.getHandlerClass().getEnclosingClass();
          List<HandlerMetaData> list = areasByEnclosingClass.get(enclosingClass);
          if (list == null) {
              list = new ArrayList<HandlerMetaData>();
              areasByEnclosingClass.put(enclosingClass, list);
          }
          list.add(handler);
      }
  
      public List<HandlerMetaData> getAreasByEnclosingClass(Class<?> enclosingClass) {
          return areasByEnclosingClass.get(enclosingClass);
      }
  
      public void addCategories(String templateId, List<Class<? extends Annotation>> categories) {
          for (Class<? extends Annotation> category : categories) {
              categoryUsages.add(category, templateId);
          }
      }
  
      public List<String> getTemplatesInCategory(Class<? extends Annotation> category) {
          List<String> templatesInCategory = categoryUsages.get(category);
          if (templatesInCategory == null)
              return new ArrayList<String>();
          return templatesInCategory;
      }
  }