/**
    * This file Copyright (c) 2020 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.async;
  
  import info.magnolia.context.AsynchronousContext;
  import info.magnolia.context.Context;
  import info.magnolia.i18nsystem.SimpleTranslator;
  import info.magnolia.ui.api.ioc.AdmincentralScoped;
  import info.magnolia.ui.api.message.Message;
  import info.magnolia.ui.api.message.MessageType;
  import info.magnolia.ui.framework.ioc.Destructible;
  import info.magnolia.ui.framework.message.MessagesManager;
  
  import java.util.Optional;
  import java.util.concurrent.ExecutionException;
  import java.util.concurrent.Executors;
  import java.util.concurrent.Future;
  import java.util.concurrent.ScheduledExecutorService;
  import java.util.concurrent.TimeUnit;
  import java.util.concurrent.TimeoutException;
  import java.util.concurrent.atomic.AtomicReference;
  
  import javax.inject.Inject;
  
  import org.apache.commons.lang3.exception.ExceptionUtils;
  
  import com.vaadin.ui.Notification;
  import com.vaadin.ui.UI;
  
  import lombok.Builder;
  import lombok.NonNull;
  
  /**
   * Executes an {@link info.magnolia.ui.contentapp.async.AsyncActionExecutor.AsyncAction} by {@link java.util.concurrent.ExecutorService}.
   * The service is shut down on admincentral destruction.
   */
  @AdmincentralScoped
  public class AsyncActionExecutor implements Destructible {
  
      private final ScheduledExecutorService executorService = Executors.newSingleThreadScheduledExecutor();
  
      private final AsynchronousContext.OperationFactory operationFactory;
      private final MessagesManager messagesManager;
      private final SimpleTranslator simpleTranslator;
      private final UI ui;
      private final String userName;
  
      @Inject
      AsyncActionExecutor(AsynchronousContext.OperationFactory operationFactory, Context context, MessagesManager messagesManager, SimpleTranslator simpleTranslator, UI ui) {
          this.operationFactory = operationFactory;
          this.messagesManager = messagesManager;
          this.simpleTranslator = simpleTranslator;
          this.ui = ui;
          userName = context.getUser().getName();
      }
  
      public void execute(AsyncAction action) {
          final AtomicReference<Notification> asynchronousActionStartedNotification = new AtomicReference<>();
          final Future<?> future = executorService.schedule(operationFactory.wrap(() -> {
              try {
                  action.action.run();
                  if (asynchronousActionStartedNotification.get() != null && action.successMessage != null) {
                      Messagee/Message.html#Message">Message message = new Message(MessageType.INFO, action.description, action.successMessage);
                      messagesManager.sendMessage(userName, message);
                      ui.push();
                  }
              } catch (Exception e) {
                  Messagee/Message.html#Message">Message message = new Message(MessageType.ERROR, action.description, action.failureMessage);
                 message.setView("ui-admincentral:longRunning");
                 message.addProperty("exception", ExceptionUtils.getMessage(e));
                 messagesManager.sendMessage(userName, message);
                 ui.push();
             }
             Optional.ofNullable(asynchronousActionStartedNotification.get()).ifPresent(Notification::close);
         }), action.delaySeconds, TimeUnit.SECONDS);
 
         try {
             future.get(action.timeToWaitMilliseconds, TimeUnit.MILLISECONDS);
         } catch (InterruptedException | ExecutionException e) {
             throw new RuntimeException(e);
         } catch (TimeoutException e) {
             asynchronousActionStartedNotification.set(Notification.show(simpleTranslator.translate("ui-framework.abstractcommand.asyncaction.long")));
         }
     }
 
     @Override
     public void destroy() {
         executorService.shutdown();
     }
 
     @Builder
     public static class AsyncAction {
         @NonNull
         private Runnable action;
         private long timeToWaitMilliseconds;
         private long delaySeconds;
         private String description;
         private String successMessage;
         private String failureMessage;
     }
 }