/* <!-- copyright */
/*
 * aria2 - The high speed download utility
 *
 * Copyright (C) 2006 Tatsuhiro Tsujikawa
 *
 * This program 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 2 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 *
 * In addition, as a special exception, the copyright holders give
 * permission to link the code of portions of this program with the
 * OpenSSL library under certain conditions as described in each
 * individual source file, and distribute linked combinations
 * including the two.
 * You must obey the GNU General Public License in all respects
 * for all of the code used other than OpenSSL.  If you modify
 * file(s) with this exception, you may extend this exception to your
 * version of the file(s), but you are not obligated to do so.  If you
 * do not wish to do so, delete this exception statement from your
 * version.  If you delete this exception statement from all source
 * files in the program, then also delete it here.
 */
/* copyright --> */
#include "FtpDownloadCommand.h"
#include "Request.h"
#include "SocketCore.h"
#include "Segment.h"
#include "DownloadEngine.h"
#include "RequestGroup.h"
#include "prefs.h"
#include "Option.h"
#include "FtpFinishDownloadCommand.h"
#include "FtpConnection.h"
#include "Logger.h"
#include "FileEntry.h"
#include "SocketRecvBuffer.h"

namespace aria2 {

FtpDownloadCommand::FtpDownloadCommand
(cuid_t cuid,
 const std::shared_ptr<Request>& req,
 const std::shared_ptr<FileEntry>& fileEntry,
 RequestGroup* requestGroup,
 const std::shared_ptr<FtpConnection>& ftpConnection,
 DownloadEngine* e,
 const std::shared_ptr<SocketCore>& dataSocket,
 const std::shared_ptr<SocketCore>& ctrlSocket)
  :DownloadCommand(cuid, req, fileEntry, requestGroup, e, dataSocket,
                   std::make_shared<SocketRecvBuffer>(dataSocket)),
   ftpConnection_(ftpConnection),
   ctrlSocket_(ctrlSocket) {}

FtpDownloadCommand::~FtpDownloadCommand() {}

bool FtpDownloadCommand::prepareForNextSegment()
{
  if(getOption()->getAsBool(PREF_FTP_REUSE_CONNECTION) &&
     getFileEntry()->gtoloff(getSegments().front()->getPositionToWrite()) ==
     getFileEntry()->getLength()) {
    getDownloadEngine()->addCommand
      (make_unique<FtpFinishDownloadCommand>
       (getCuid(), getRequest(), getFileEntry(), getRequestGroup(),
        ftpConnection_, getDownloadEngine(), ctrlSocket_));

    if(getRequestGroup()->downloadFinished()) {
      // To run checksum checking, we had to call following function here.
      DownloadCommand::prepareForNextSegment();
    }
    return true;
  } else {
    return DownloadCommand::prepareForNextSegment();
  }
}

int64_t FtpDownloadCommand::getRequestEndOffset() const
{
  return getFileEntry()->getLength();
}

} // namespace aria2