/* <!-- 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 "ChecksumCheckIntegrityEntry.h"
#include "RequestGroup.h"
#include "DownloadContext.h"
#include "FileEntry.h"
#include "IteratableChecksumValidator.h"
#include "DownloadEngine.h"
#include "PieceStorage.h"
#include "FileAllocationEntry.h"
#include "StreamFileAllocationEntry.h"

namespace aria2 {

ChecksumCheckIntegrityEntry::ChecksumCheckIntegrityEntry(
    RequestGroup* requestGroup, std::unique_ptr<Command> nextCommand)
    : CheckIntegrityEntry{requestGroup, std::move(nextCommand)},
      redownload_{false}
{
}

ChecksumCheckIntegrityEntry::~ChecksumCheckIntegrityEntry() = default;

bool ChecksumCheckIntegrityEntry::isValidationReady()
{
  const std::shared_ptr<DownloadContext>& dctx =
      getRequestGroup()->getDownloadContext();
  return dctx->isChecksumVerificationAvailable();
}

void ChecksumCheckIntegrityEntry::initValidator()
{
  auto validator = make_unique<IteratableChecksumValidator>(
      getRequestGroup()->getDownloadContext(),
      getRequestGroup()->getPieceStorage());
  validator->init();
  setValidator(std::move(validator));
}

void ChecksumCheckIntegrityEntry::onDownloadFinished(
    std::vector<std::unique_ptr<Command>>& commands, DownloadEngine* e)
{
}

void ChecksumCheckIntegrityEntry::onDownloadIncomplete(
    std::vector<std::unique_ptr<Command>>& commands, DownloadEngine* e)
{
  if (redownload_) {
    proceedFileAllocation(commands,
                          make_unique<StreamFileAllocationEntry>(
                              getRequestGroup(), popNextCommand()),
                          e);
    return;
  }

  // If we don't redownload, set error code to indicate checksum error
  getRequestGroup()->setLastErrorCode(error_code::CHECKSUM_ERROR);
}

} // namespace aria2
