/**
    * This file Copyright (c) 2017-2018 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;
  
  import info.magnolia.cms.util.QueryUtil;
  import info.magnolia.jcr.util.NodeUtil;
  import info.magnolia.module.InstallContext;
  import info.magnolia.module.delta.AbstractRepositoryTask;
  import info.magnolia.module.delta.TaskExecutionException;
  import info.magnolia.repository.RepositoryConstants;
  import info.magnolia.repository.RepositoryManager;
  
  import java.util.List;
  import java.util.stream.Collectors;
  
  import javax.jcr.Node;
  import javax.jcr.NodeIterator;
  import javax.jcr.RepositoryException;
  import javax.jcr.query.Query;
  
  import org.apache.commons.lang3.StringUtils;
  
  /**
   * Changes versioned node names to uuids.
   */
  public class RenameVersionNodesTask extends AbstractRepositoryTask {
  
      private final RepositoryManager repositoryManager;
  
      public RenameVersionNodesTask(RepositoryManager repositoryManager) {
          super("Rename version nodes", "Rename version nodes to avoid same name sibling conflicts");
          this.repositoryManager = repositoryManager;
      }
  
      @Override
      protected void doExecute(InstallContext installContext) throws RepositoryException, TaskExecutionException {
          List<String> versionWorkspaces = repositoryManager.getWorkspaceNames().stream().filter(input -> StringUtils.endsWith(input, RepositoryConstants.VERSION_STORE)).collect(Collectors.toList());
          for (String workspace : versionWorkspaces) {
              String xpath = "//element(*, mgnl:folder)/element(*, mgnl:folder)/element(*, mgnl:folder)/*";
              NodeIterator nodeIterator = QueryUtil.search(workspace, xpath, Query.XPATH);
              while (nodeIterator.hasNext()) {
                  Node node = nodeIterator.nextNode();
                  if (node.getDepth() == 4 && !StringUtils.equals(node.getName(), node.getIdentifier())) {
                      NodeUtil.renameNode(node, node.getIdentifier());
                  }
              }
          }
      }
  }