/**
    * This file Copyright (c) 2019 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.ui.contentapp.action;
  
  import info.magnolia.cms.core.version.VersionInfo;
  import info.magnolia.cms.core.version.VersionManager;
  import info.magnolia.ui.CloseHandler;
  import info.magnolia.ui.api.action.ActionExecutionException;
  import info.magnolia.ui.ValueContext;
  import info.magnolia.ui.editor.FormView;
  
  import java.util.Optional;
  
  import javax.inject.Inject;
  import javax.jcr.Node;
  import javax.jcr.RepositoryException;
  import javax.jcr.version.Version;
  
  /**
   * Restores a version.
   */
  public class RestoreJcrVersionAction extends CloseAction<RestoreJcrVersionActionDefinition> {
  
      private final FormView<Node> form;
      private final ValueContext<Node> valueContext;
      private final VersionManager versionManager;
  
      @Inject
      public RestoreJcrVersionAction(RestoreJcrVersionActionDefinition definition, CloseHandler closeHandler, FormView<Node> form, ValueContext<Node> valueContext, VersionManager versionManager) {
          super(definition, closeHandler);
          this.form = form;
          this.valueContext = valueContext;
          this.versionManager = versionManager;
      }
  
      @Override
      public void execute() throws ActionExecutionException {
          Optional<String> version = getVersion();
          if (version.isPresent()) {
              try {
                  Node node = valueContext.getSingleOrThrow();
                  final Version versionToRestore;
                  versionToRestore = versionManager.getVersion(node, version.get());
                  versionManager.restore(node, versionToRestore, true);
                  valueContext.set(node);
                  super.execute();
              } catch (RepositoryException e) {
                  throw new ActionExecutionException(e);
              }
          }
      }
  
      private Optional<String> getVersion() {
          return form.<VersionInfo>getPropertyValue(getDefinition().getVersionFieldName()).map(VersionInfo::getVersionName);
      }
  }