/**
    * This file Copyright (c) 2010-2018 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.ui.framework.action;
  
  import info.magnolia.event.EventBus;
  import info.magnolia.i18nsystem.SimpleTranslator;
  import info.magnolia.ui.api.action.ActionExecutionException;
  import info.magnolia.ui.api.context.UiContext;
  import info.magnolia.ui.api.event.AdmincentralEventBus;
  import info.magnolia.ui.api.event.ContentChangedEvent;
  import info.magnolia.ui.api.overlay.ConfirmationCallback;
  import info.magnolia.ui.vaadin.integration.jcr.JcrItemAdapter;
  import info.magnolia.ui.vaadin.integration.jcr.JcrItemId;
  import info.magnolia.ui.vaadin.integration.jcr.JcrItemUtil;
  import info.magnolia.ui.vaadin.overlay.MessageStyleTypeEnum;
  
  import java.util.Collections;
  import java.util.List;
  
  import javax.inject.Named;
  import javax.jcr.Item;
  import javax.jcr.PathNotFoundException;
  import javax.jcr.Session;
  
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  /**
   * Deletes a node or property from the repository.
   *
   * @see DeleteItemActionDefinition
   */
  public class DeleteItemAction extends AbstractMultiItemAction<DeleteItemActionDefinition> {
  
      private final Logger log = LoggerFactory.getLogger(getClass());
  
      private final UiContext uiContext;
      private final EventBus eventBus;
      private final SimpleTranslator i18n;
  
      public DeleteItemAction(DeleteItemActionDefinition definition, JcrItemAdapter item, @Named(AdmincentralEventBus.NAME) EventBus eventBus, UiContext uiContext, SimpleTranslator i18n) {
          super(definition, Collections.singletonList(item), uiContext);
          this.uiContext = uiContext;
          this.eventBus = eventBus;
          this.i18n = i18n;
      }
  
      public DeleteItemAction(DeleteItemActionDefinition definition, List<JcrItemAdapter> items, @Named(AdmincentralEventBus.NAME) EventBus eventBus, UiContext uiContext, SimpleTranslator i18n) {
          super(definition, items, uiContext);
          this.uiContext = uiContext;
          this.eventBus = eventBus;
          this.i18n = i18n;
      }
  
      @Override
      public void execute() throws ActionExecutionException {
  
          uiContext.openConfirmation(
                  MessageStyleTypeEnum.WARNING, getConfirmationQuestion(),
                  i18n.translate("ui-framework.actions.deleteItem.warningText"),
                  i18n.translate("ui-framework.actions.deleteItem.confirmText"),
                  i18n.translate("ui-framework.actions.deleteItem.cancelText"),
                  true,
                  new ConfirmationCallback() {
  
                      @Override
                      public void onSuccess() {
                          DeleteItemAction.this.executeAfterConfirmation();
                     }
 
                     @Override
                     public void onCancel() {
                     }
                 });
     }
 
     private String getConfirmationQuestion() {
         if (getItems().size() == 1) {
             return i18n.translate("ui-framework.actions.deleteItem.confirmationQuestionOneItem");
         }
         return String.format(i18n.translate("ui-framework.actions.deleteItem.confirmationQuestionManyItems"), getItems().size());
     }
 
     protected void executeAfterConfirmation() {
         try {
             super.execute();
         } catch (ActionExecutionException e) {
             log.error("Problem occured during deleting items.", e);
         }
     }
 
     @Override
     protected void executeOnItem(JcrItemAdapter item) throws Exception {
         try {
             final Item jcrItem = item.getJcrItem();
             if (jcrItem.getDepth() == 0) {
                 // cannot delete root node
                 throw new IllegalArgumentException(i18n.translate("ui-framework.actions.deleteItem.cannotDeleteRootItem"));
             }
             JcrItemId itemIdOfChangedItem = JcrItemUtil.getItemId(jcrItem);
             Session session = jcrItem.getSession();
             jcrItem.remove();
             session.save();
 
             eventBus.fireEvent(new ContentChangedEvent(itemIdOfChangedItem));
         } catch (PathNotFoundException e) {
             // ignore - the item has been probably already deleted (with a parent node)
         }
     }
 
     @Override
     protected String getSuccessMessage() {
         if (getItems().size() == 1) {
             return i18n.translate("ui-framework.actions.deleteItem.successOneItemDeleted");
         } else {
             return i18n.translate("ui-framework.actions.deleteItem.successManyItemsDeleted", getItems().size());
         }
     }
 
     @Override
     protected String getFailureMessage() {
         return i18n.translate("ui-framework.actions.deleteItem.deletionfailure", getFailedItems().size(), getItems().size());
     }
 }