content: /*
   This file is part of Airsonic.
  
   Airsonic is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation, either version 3 of the License, or
   (at your option) any later version.
  
   Airsonic is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.
  
   You should have received a copy of the GNU General Public License
   along with Airsonic.  If not, see <http://www.gnu.org/licenses/>.
  
   Copyright 2016 (C) Airsonic Authors
   Based upon Subsonic, Copyright 2009 (C) Sindre Mehus
   */
  package org.airsonic.player.ajax;
  
  import org.airsonic.player.controller.UploadController;
  import org.airsonic.player.domain.TransferStatus;
  import org.directwebremoting.WebContextFactory;
  import org.springframework.stereotype.Service;
  
  import javax.servlet.http.HttpSession;
  
  /**
   * Provides AJAX-enabled services for retrieving the status of ongoing transfers.
   * This class is used by the DWR framework (http://getahead.ltd.uk/dwr/).
   *
   * @author Sindre Mehus
   */
  @Service("ajaxTransferService")
  public class TransferService {
  
      /**
       * Returns info about any ongoing upload within the current session.
       * @return Info about ongoing upload.
       */
      public UploadInfo getUploadInfo() {
  
          HttpSession session = WebContextFactory.get().getSession();
          TransferStatus status = (TransferStatus) session.getAttribute(UploadController.UPLOAD_STATUS);
  
          if (status != null) {
              return new UploadInfo(status.getBytesTransfered(), status.getBytesTotal());
          }
          return new UploadInfo(0L, 0L);
      }
  }
  