/**
    * This file Copyright (c) 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.module.cache.setup;
  
  import info.magnolia.module.InstallContext;
  import info.magnolia.module.cache.AbstractCacheModule;
  import info.magnolia.module.cache.filter.CacheFilter;
  import info.magnolia.module.delta.NodeVisitorTask;
  import info.magnolia.repository.RepositoryConstants;
  
  import javax.jcr.Node;
  import javax.jcr.Property;
  import javax.jcr.RepositoryException;
  
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  /**
   * Migrate cache filters configurations from 5.3 to 5.4.
   */
  public class MigrateCacheFilterConfigurationTask extends NodeVisitorTask {
  
      private static final Logger log = LoggerFactory.getLogger(MigrateCacheFilterConfigurationTask.class);
  
      private static final String OLD_DEFAULT_CACHE_CONFIG = "default";
  
      private static final String FILTERS_PATH = "/server/filters";
  
      public MigrateCacheFilterConfigurationTask() {
          super("Set defaultContentConfigurationName property to cache filters.", "Set defaultContentConfigurationName property to cache filters.", RepositoryConstants.CONFIG, FILTERS_PATH);
      }
  
  
  
      @Override
      protected boolean nodeMatches(Node node) {
          try {
              if (node.hasProperty("class") && CacheFilter.class.isAssignableFrom(Class.forName(node.getProperty("class").getString()))) {
                  return true;
              }
          } catch (RepositoryException e) {
              log.error("Could not execute task: ", e);
          } catch (ClassNotFoundException e) {
              log.warn("Filter class '{}' not found.", e.getMessage());
          }
          return false;
      }
  
      @Override
      protected void operateOnNode(InstallContext installContext, Node node) {
          try {
              if (node.hasProperty("cacheConfigurationName")) {
                  Property oldProperty = node.getProperty("cacheConfigurationName");
                  if (oldProperty.getString().equals(OLD_DEFAULT_CACHE_CONFIG)) {
                      node.setProperty("defaultContentCachingConfigurationName", AbstractCacheModule.DEFAULT_CACHE_CONFIG);
                  } else {
                      node.setProperty("defaultContentCachingConfigurationName", oldProperty.getValue());
                  }
                  oldProperty.remove();
              } else if (node.hasProperty(AbstractCacheModule.DEFAULT_CACHE_CONFIG)) {
                  //incorrectly set name in 5.4 version
                  Property oldProperty = node.getProperty(AbstractCacheModule.DEFAULT_CACHE_CONFIG);
                  node.setProperty("defaultContentCachingConfigurationName", oldProperty.getValue());
                  oldProperty.remove();
              } else {
                  node.setProperty("defaultContentCachingConfigurationName", AbstractCacheModule.DEFAULT_CACHE_CONFIG);
              }
          } catch (RepositoryException e) {
             installContext.error("Could not execute task: ", e);
         }
     }
 }