/**
    * 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.ui.api.action.AbstractAction;
  import info.magnolia.ui.api.action.ActionExecutionException;
  import info.magnolia.ui.api.app.AppDescriptor;
  import info.magnolia.ui.contentapp.Datasource;
  import info.magnolia.ui.ValueContext;
  import info.magnolia.ui.chooser.definition.AppAwareWorkbenchChooserDefinition;
  import info.magnolia.ui.chooser.definition.SingleItemWorkbenchChooserDefinition;
  import info.magnolia.ui.framework.overlay.ChooserController;
  
  import java.util.List;
  import java.util.Optional;
  import java.util.stream.Collectors;
  import java.util.stream.Stream;
  
  import javax.inject.Inject;
  
  import org.apache.commons.lang3.StringUtils;
  
  import com.vaadin.shared.ui.grid.DropLocation;
  
  /**
   * Move action.
   */
  public class MoveAction<T> extends AbstractAction<MoveActionDefinition> {
  
      private final ChooserController chooserController;
      private final Datasource<T> datasource;
      private final ValueContext<T> valueContext;
      private final AppDescriptor appDescriptor;
  
      @Inject
      public MoveAction(MoveActionDefinition<T> actionDefinition, ChooserController chooserController, Datasource<T> datasource, ValueContext<T> valueContext, AppDescriptor appDescriptor) {
          super(actionDefinition);
          this.chooserController = chooserController;
          this.datasource = datasource;
          this.valueContext = valueContext;
          this.appDescriptor = appDescriptor;
      }
  
      @Override
      public void execute() throws ActionExecutionException {
          SingleItemWorkbenchChooserDefinition<T> chooser = Optional.ofNullable(getDefinition().getChooser())
                  .orElseGet(() -> {
                      MoveActionDefinition.MoveWorkbenchDefinition<T> workbenchDefinition = new MoveActionDefinition.MoveWorkbenchDefinition<>();
                      final AppAwareWorkbenchChooserDefinition<T> workbenchChooser = new AppAwareWorkbenchChooserDefinition<>();
                      workbenchChooser.setAppName(appDescriptor.getName());
                      workbenchDefinition.setWorkbenchChooser(workbenchChooser);
                      getDefinition().setChooser(workbenchDefinition); //we have to set parent for i18n
                      return getDefinition().getChooser(); //get i18nized definition
                  });
  
          final ChooserController.OnItemChosen<T> onItemChosen = chooserController.openChooser(chooser);
          onItemChosen
                  .whenComplete((chooseResult, err) -> {
                      if (err != null) {
                          throw new RuntimeException(err);
                      }
                      final List<T> items = valueContext.get().collect(Collectors.toList());
                      final T target = chooseResult.getChoice().orElseThrow(IllegalArgumentException::new);
                      final DropLocation dropLocation = Optional.of(onItemChosen.getAction())
                              .flatMap(action -> Stream.of(DropLocation.values()).filter(location -> StringUtils.equalsIgnoreCase(location.name(), action)).findFirst())
                              .orElse(DropLocation.ON_TOP);
                      datasource.moveItems(items, target, dropLocation);
                  });
     }
 }