/**
    * This file Copyright (c) 2012-2016 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.admincentral.shellapp.pulse.message;
  
  import info.magnolia.context.Context;
  import info.magnolia.event.EventBus;
  import info.magnolia.objectfactory.ComponentProvider;
  import info.magnolia.ui.admincentral.shellapp.pulse.item.detail.PulseItemCategory;
  import info.magnolia.ui.admincentral.shellapp.pulse.item.list.AbstractPulseListPresenter;
  import info.magnolia.ui.admincentral.shellapp.pulse.item.list.PulseListPresenter;
  import info.magnolia.ui.api.event.AdmincentralEventBus;
  import info.magnolia.ui.api.message.Message;
  import info.magnolia.ui.api.message.MessageType;
  import info.magnolia.ui.api.view.View;
  import info.magnolia.ui.framework.message.MessageEvent;
  import info.magnolia.ui.framework.message.MessageEventHandler;
  import info.magnolia.ui.framework.message.MessagesManager;
  
  import java.util.Set;
  
  import javax.inject.Inject;
  import javax.inject.Named;
  
  /**
   * Presenter of {@link MessagesListView}.
   */
  public final class MessagesListPresenter extends AbstractPulseListPresenter<Message, MessagesListPresenter.Listener> implements MessagesListView.Listener, MessageEventHandler {
  
      private final EventBus admincentralEventBus;
      private final MessagesListView view;
      private final MessagesManager messagesManager;
      private final ComponentProvider componentProvider;
      private final String userId;
  
      @Inject
      public MessagesListPresenter(final MessagesContainer container, @Named(AdmincentralEventBus.NAME) final EventBus admincentralEventBus,
              final MessagesListView view, final MessagesManager messagesManager, ComponentProvider componentProvider, Context context) {
          super(container);
          this.admincentralEventBus = admincentralEventBus;
          this.view = view;
          this.messagesManager = messagesManager;
          this.componentProvider = componentProvider;
          this.userId = context.getUser().getName();
      }
  
      @Override
      public View start() {
          view.setListener(this);
          initView();
          admincentralEventBus.addHandler(MessageEvent.class, this);
          return view;
      }
  
      @Override
      public View openItem(String messageId) {
          Message message = messagesManager.getMessageById(userId, messageId);
  
          MessageDetailPresenter messagePresenter = componentProvider.newInstance(MessageDetailPresenter.class, message);
          messagePresenter.setListener(this);
  
          return messagePresenter.start();
      }
  
      private void initView() {
          view.setDataSource(container.getVaadinContainer());
          for (MessageType type : MessageType.values()) {
              doUnreadMessagesUpdate(type);
          }
     }
 
     @Override
     public void messageSent(MessageEvent event) {
         final Message message = event.getMessage();
         container.refresh();
 
         final MessageType type = message.getType();
         doUnreadMessagesUpdate(type);
     }
 
     @Override
     public void messageCleared(MessageEvent event) {
         final Message message = event.getMessage();
         final MessageType type = message.getType();
         doUnreadMessagesUpdate(type);
         container.refresh();
     }
 
     @Override
     public void deleteItems(final Set<String> messageIds) {
         if (messageIds == null || messageIds.isEmpty()) {
             return;
         }
         for (String messageId : messageIds) {
             Message message = messagesManager.getMessageById(userId, messageId);
             if (message == null) {
                 continue;
             }
             messagesManager.removeMessage(userId, messageId);
         }
     }
 
     @Override
     public long getTotalEntriesAmount() {
         return container.size();
     }
 
     @Override
     public void onItemClicked(String messageId) {
         listener.openMessage(messageId);
         messagesManager.clearMessage(userId, messageId);
     }
 
     @Override
     public void updateDetailView(String itemId) {
         listener.openMessage(itemId);
     }
 
     @Override
     public void messageRemoved(MessageEvent messageEvent) {
         container.refresh();
         for (MessageType type : MessageType.values()) {
             doUnreadMessagesUpdate(type);
         }
     }
 
     private void doUnreadMessagesUpdate(final MessageType type) {
         int count;
         switch (type) {
         case ERROR:
         case WARNING:
             count = messagesManager.getNumberOfUnclearedMessagesForUserAndByType(userId, MessageType.ERROR);
             count += messagesManager.getNumberOfUnclearedMessagesForUserAndByType(userId, MessageType.WARNING);
             view.updateCategoryBadgeCount(PulseItemCategory.PROBLEM, count);
             break;
         case INFO:
             count = messagesManager.getNumberOfUnclearedMessagesForUserAndByType(userId, type);
             view.updateCategoryBadgeCount(PulseItemCategory.INFO, count);
             break;
         default:
             break;
         }
     }
 
     public int getNumberOfUnclearedMessagesForCurrentUser() {
         return messagesManager.getNumberOfUnclearedMessagesForUser(userId);
     }
 
     /**
      * Listener interface used to call back to parent presenter.
      */
     public interface Listener extends PulseListPresenter.Listener {
         public void openMessage(String messageId);
     }
 }