/**
    * This file Copyright (c) 2015 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.dam.external.app.action;
  
  import info.magnolia.dam.api.Item;
  import info.magnolia.i18nsystem.SimpleTranslator;
  import info.magnolia.objectfactory.ComponentProvider;
  import info.magnolia.ui.api.action.AbstractAction;
  import info.magnolia.ui.api.action.AbstractActionExecutor;
  import info.magnolia.ui.api.action.ActionDefinition;
  import info.magnolia.ui.api.action.ActionExecutionException;
  import info.magnolia.ui.api.action.ActionExecutor;
  import info.magnolia.ui.api.app.SubAppContext;
  import info.magnolia.ui.api.context.UiContext;
  import info.magnolia.ui.vaadin.overlay.MessageStyleTypeEnum;
  
  import javax.inject.Inject;
  
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  import com.vaadin.data.util.BeanItem;
  
  /**
   * Action that delegates to another action based on the provider id.
   */
  public class DelegateAction extends AbstractAction<DelegateActionDefinition> {
  
      private static final Logger log = LoggerFactory.getLogger(DelegateAction.class);
  
      private final BeanItem<Item> itemBean;
      private final SubAppContext subAppContext;
      private final ComponentProvider componentProvider;
      private final UiContext uiContext;
      private final SimpleTranslator i18n;
  
      @Inject
      public DelegateAction(DelegateActionDefinition definition, BeanItem<Item> itemBean, SubAppContext subAppContext, ComponentProvider componentProvider, UiContext uiContext, SimpleTranslator i18n) {
          super(definition);
          this.itemBean = itemBean;
          this.subAppContext = subAppContext;
          this.componentProvider = componentProvider;
          this.uiContext = uiContext;
          this.i18n = i18n;
      }
  
      @Override
      public void execute() throws ActionExecutionException {
          if (!(itemBean.getBean() instanceof Item)) {
              log.info("The bean is not instance of dam item. Cannot execute delegate action.");
              uiContext.openNotification(MessageStyleTypeEnum.ERROR, true, i18n.translate("dam-external-app.action.delegate.action.notdamitem"));
              return;
          }
          String providerId = ((Item) itemBean.getBean()).getItemKey().getProviderId();
          if (!getDefinition().getProviderToAction().containsKey(providerId)) {
              log.info("Definition does not contain entry for {}. Cannot execute delegate action.", providerId);
              uiContext.openNotification(MessageStyleTypeEnum.ERROR, true, i18n.translate("dam-external-app.action.delegate.action.nomapping", providerId));
              return;
          }
          String actionName = getDefinition().getProviderToAction().get(providerId);
          ActionExecutor executor = new AbstractActionExecutor(componentProvider) {
              @Override
              public ActionDefinition getActionDefinition(String actionName) {
                  return subAppContext.getSubAppDescriptor().getActions().get(actionName);
              }
          };
          log.debug("Delegation to action {}.", actionName);
          executor.execute(actionName, itemBean);
     }
 }