/**
    * 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.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.availability.AvailabilityChecker;
  import info.magnolia.ui.ValueContext;
  
  import java.util.List;
  import java.util.Map;
  import java.util.stream.Collectors;
  
  import javax.inject.Inject;
  
  import com.machinezoo.noexception.Exceptions;
  
  /**
   * Executes chain of actions.
   */
  public class ChainedAction<T> extends AbstractAction<ChainedActionDefinition> {
  
      private final ChainedActionExecutor actionExecutor;
      private final ValueContext<T> valueContext;
      private final AvailabilityChecker<T> availabilityChecker;
  
      @Inject
      public ChainedAction(ChainedActionDefinition actionDefinition, ComponentProvider componentProvider, ValueContext<T> valueContext, AvailabilityChecker<T> availabilityChecker) {
          super(actionDefinition);
          this.actionExecutor = new ChainedActionExecutor(componentProvider);
          this.valueContext = valueContext;
          this.availabilityChecker = availabilityChecker;
      }
  
      @Override
      public void execute() throws ActionExecutionException {
          final List<T> items = valueContext.get().collect(Collectors.toList());
  
          getDefinition().getActions().entrySet().stream()
                  .filter(actionDefinitionEntry -> availabilityChecker.isAvailable(actionDefinitionEntry.getValue().getAvailability(), items))
                  .map(Map.Entry::getKey)
                  .forEach(Exceptions.wrap().consumer(this::execute));
      }
  
      protected void execute(String action) throws ActionExecutionException {
          actionExecutor.execute(action);
      }
  
      protected ValueContext<T> getValueContext() {
          return valueContext;
      }
  
      private class ChainedActionExecutor extends AbstractActionExecutor {
  
          private ChainedActionExecutor(ComponentProvider componentProvider) {
              super(componentProvider);
          }
  
          @Override
          public ActionDefinition getActionDefinition(String actionName) {
              return getDefinition().getActions().get(actionName);
          }
      }
  }