/**
    * 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.badge;
  
  import static info.magnolia.task.Task.Status.*;
  
  import info.magnolia.context.Context;
  import info.magnolia.event.EventBus;
  import info.magnolia.event.HandlerRegistration;
  import info.magnolia.i18nsystem.SimpleTranslator;
  import info.magnolia.task.Task;
  import info.magnolia.task.TasksManager;
  import info.magnolia.task.event.TaskEvent;
  import info.magnolia.task.event.TaskEventHandler;
  import info.magnolia.ui.api.event.AdmincentralEventBus;
  import info.magnolia.ui.api.location.DefaultLocation;
  import info.magnolia.ui.api.location.Location;
  import info.magnolia.ui.api.location.LocationController;
  import info.magnolia.ui.api.shell.CloseAppEvent;
  
  import java.util.Arrays;
  import java.util.Collections;
  import java.util.List;
  
  import javax.inject.Inject;
  import javax.inject.Named;
  
  /**
   * Task badge implementation.
   */
  public class TaskBadge extends AbstractBadge implements TaskEventHandler {
  
      private final TasksManager tasksManager;
      private final HandlerRegistration registration;
      static final List<Task.Status> CREATED = Collections.singletonList(Created);
      static final List<Task.Status> ASSIGNED = Arrays.asList(InProgress, Scheduled);
      private final EventBus eventBus;
  
      @Inject
      TaskBadge(LocationController controller, Context context, SimpleTranslator i18n, TasksManager tasksManager, @Named(AdmincentralEventBus.NAME) EventBus eventBus) {
          super(controller, context, i18n);
          this.tasksManager = tasksManager;
          this.registration = eventBus.addHandler(TaskEvent.class,this);
          this.eventBus = eventBus;
  
          update();
      }
  
      @Override
      Status getStatus() {
          long newItems = tasksManager.getTasksAmountByUserAndStatus(getUserName(), CREATED);
          int assignedItems = tasksManager.findTasksByAssigneeAndStatus(getUserName(), ASSIGNED).size();
  
          String description = getI18n().translate("badge.task.description", newItems, assignedItems);
          // the number of all tasks in the workflow for the current user which have not been archived.
          long grandTotal = newItems + assignedItems;
          return new Status(newItems > 0, (int) grandTotal, description);
      }
  
      @Override
      public String getCaption() {
          return getI18n().translate("tasks.app.caption");
      }
  
      @Override
      Location getLocation() {
          return new DefaultLocation("app", "tasks-app");
      }
 
     @Override
     public void taskClaimed(TaskEvent taskEvent) {
         update();
     }
 
     @Override
     public void taskAdded(TaskEvent taskEvent) {
         update();
     }
 
     @Override
     public void taskArchived(TaskEvent taskEvent) {
         update();
     }
 
     @Override
     public void taskResolved(TaskEvent taskEvent) {
         update();
     }
 
     @Override
     public void taskFailed(TaskEvent taskEvent) {
         update();
     }
 
     @Override
     public void taskRemoved(TaskEvent taskEvent) {
         update();
     }
 
     @Override
     public void taskScheduled(TaskEvent taskEvent) {
         update();
     }
 
     @Override
     public void detach() {
         registration.removeHandler();
         super.detach();
     }
 
     @Override
     protected void onBadgeDeselected() {
         eventBus.fireEvent(new CloseAppEvent());
     }
 }