/**
    * This file Copyright (c) 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.admincentral.apps.notifications.view;
  
  import info.magnolia.admincentral.apps.notifications.NotificationDataSourceDefinition;
  import info.magnolia.context.MgnlContext;
  import info.magnolia.i18nsystem.SimpleTranslator;
  import info.magnolia.ui.api.app.SubAppContext;
  import info.magnolia.ui.api.app.SubAppDescriptor;
  import info.magnolia.ui.api.message.MessageType;
  import info.magnolia.ui.contentapp.ContentBrowserSubApp;
  import info.magnolia.ui.contentapp.configuration.BrowserDescriptor;
  import info.magnolia.ui.framework.datasource.definition.DatasourceDefinition;
  import info.magnolia.ui.framework.message.MessagesManager;
  
  import java.util.Collections;
  import java.util.List;
  import java.util.Optional;
  
  import javax.inject.Inject;
  
  /**
   * Customized browser subapp implementation for notification app.
   */
  public class NotificationBrowserSubApp extends ContentBrowserSubApp {
  
      private final SimpleTranslator i18n;
      private final MessagesManager messagesManager;
      private final String username;
      private final DatasourceDefinition datasourceDefinition;
  
      @Inject
      public NotificationBrowserSubApp(SubAppContext subAppContext, SimpleTranslator i18n, MessagesManager messagesManager, DatasourceDefinition datasourceDefinition, BrowserDescriptor browserDescriptor) {
          super(subAppContext, browserDescriptor);
          this.i18n = i18n;
          this.messagesManager = messagesManager;
          this.username = MgnlContext.getUser().getName();
          this.datasourceDefinition = datasourceDefinition;
      }
  
      @Override
      public String getCaption() {
          long unclearedNotifications = getUnclearedNotifications();
          String unclearedAsString = unclearedNotifications >= 100 ? "99+" : String.valueOf(unclearedNotifications);
  
          return i18n.translate(getSubAppContext().getSubAppDescriptor().getLabel(), unclearedAsString);
      }
  
      private long getUnclearedNotifications() {
          List<String> notificationTypes = getConfiguredNotificationTypes();
          if (notificationTypes == null || notificationTypes.isEmpty()) {
              return messagesManager.getNumberOfUnclearedMessagesForUser(username);
          }
  
          long numberOfUnclearedNotifications = 0;
          for (String notificationType : notificationTypes) {
              numberOfUnclearedNotifications += messagesManager.getNumberOfUnclearedMessagesForUserAndByType(username, MessageType.valueOf(notificationType));
          }
  
          return numberOfUnclearedNotifications;
      }
  
      private List<String> getConfiguredNotificationTypes() {
          return Optional.ofNullable(datasourceDefinition)
                  .filter(NotificationDataSourceDefinition.class::isInstance)
                  .map(NotificationDataSourceDefinition.class::cast)
                  .map(NotificationDataSourceDefinition::getMessageTypes)
                  .orElse(Collections.emptyList());
     }
 
     public String getTitle() {
         SubAppDescriptor subAppDescriptor = getSubAppContext().getSubAppDescriptor();
         if (subAppDescriptor instanceof NotificationBrowserDescriptor) {
             return i18n.translate(((NotificationBrowserDescriptor) subAppDescriptor).getTitle(), getUnclearedNotifications());
         }
 
         return getCaption();
     }
 
 }