/*
 * Data Hub Service (DHuS) - For Space data distribution.
 * Copyright (C) 2013,2014,2015 GAEL Systems
 *
 * This file is part of DHuS software sources.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 *
 * This program 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 Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */
package fr.gael.dhus.util;

import java.util.Date;

import org.apache.commons.net.io.CopyStreamAdapter;

import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;

import org.springframework.transaction.annotation.Propagation;
import org.springframework.transaction.annotation.Transactional;

import fr.gael.dhus.database.object.User;

/**
 * @author pidancier
 *
 */
public class DownloadActionRecordListener extends CopyStreamAdapter
{
   private static final Logger LOGGER = LogManager.getLogger(DownloadActionRecordListener.class);
   private String uuid;
   private String identifier;
   private User user;
   private boolean started=false;
   private long start;
   
   public DownloadActionRecordListener(String uuid,String identifier,User user)
   {
      this.uuid = uuid;
      this.identifier = identifier;
      this.user = user;
   }

   @Override
   @Transactional (propagation=Propagation.REQUIRED)
   public void bytesTransferred (long total_bytes_transferred,
      int bytes_transferred, long stream_size)
   {
      if ((total_bytes_transferred==bytes_transferred) && !started)
      {
         start = new Date ().getTime ();
         started=true;
         LOGGER.info("Product '" + this.uuid +
            "' ("+ this.identifier + ") "+
               "download by user '" + user.getUsername () +
            "' started -> " + stream_size);
         return;
      }
      
      if (bytes_transferred == -1)
      {
         if (total_bytes_transferred==stream_size)
         {
            long end = new Date ().getTime ();
            LOGGER.info("Product '" + this.uuid +
               "' ("+ this.identifier + ") " +
                  "download by user '" + user.getUsername () +
               "' completed in "+ (end-start) + "ms -> " + stream_size);
         }
         else
         {
            long end = new Date ().getTime ();
            LOGGER.info("Product '" + this.uuid +
               "' ("+ this.identifier + ") " +
                  "download by user '" + user.getUsername () +
               "' failed at " + total_bytes_transferred + "/" + stream_size +
               " in "+ (end-start) + "ms ");
         }
      }
   }
}