/**
    * This file Copyright (c) 2007-2010 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.setup.for3_6;
  
  import info.magnolia.cms.core.Content;
  import info.magnolia.cms.core.HierarchyManager;
  import info.magnolia.module.InstallContext;
  import info.magnolia.module.delta.AbstractTask;
  import info.magnolia.module.delta.TaskExecutionException;
  
  import java.util.Iterator;
  
  import javax.jcr.RepositoryException;
  import javax.jcr.nodetype.NodeType;
  
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  
  /**
   * Checks nodes for occurrence of mix:versionable supertype.
   * @author had
   * @version $Id: $
   *
   */
  public class CheckNodesForMixVersionable extends AbstractTask {
  
      private static Logger log = LoggerFactory.getLogger(CheckNodesForMixVersionable.class);
  
      public static final String UPDATE_PATH= "server/install/3_6";
      public static final String CONTENT_CHECK_FLAG = "contentMigrated";
  
      public CheckNodesForMixVersionable() {
          super("Check existing top level nodes", "Checks existing top level nodes for existence of mix:versionable.");
      }
  
      public void execute(InstallContext installContext)
              throws TaskExecutionException {
          HierarchyManager hm = installContext.getHierarchyManager("website");
          try {
              // fast track for EE users
              HierarchyManager chm = installContext.getConfigHierarchyManager();
              if (chm.getRoot().hasContent(CheckNodesForMixVersionable.UPDATE_PATH)) {
                  Content c = chm.getRoot().getContent(CheckNodesForMixVersionable.UPDATE_PATH);
                  if (c.hasNodeData(CheckNodesForMixVersionable.CONTENT_CHECK_FLAG) && c.getNodeData(CheckNodesForMixVersionable.CONTENT_CHECK_FLAG).getBoolean()) {
                      return;
                  }
              }
  
              Iterator iter = hm.getRoot().getChildren().iterator();
              while (iter.hasNext()) {
                  NodeType[] nt = ((Content) iter.next()).getMixinNodeTypes();
                  for (int i = 0; i < nt.length; i++) {
                      if ("mix:versionable".equals(nt[i].getName())) {
                          installContext.warn("There are nodes in your repository that contain unnecessary mix:versionable. Please replace all mix:versionable with mix:referenceable supertype to achieve optimal repository performance. Refer to Magnolia Documentation at http://documentation.magnolia-cms.com/releases/3-6.html for details. An executable is provided for Enterprise Customers.");
                          return;
                      }
                  }
              }
          } catch (RepositoryException e) {
              log.error(e.getMessage(), e);
              //installContext.error(e.getMessage(), e);
              throw new TaskExecutionException("Failed to execute content node super type check.", e);
          }
      }
  }