/* <!-- 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 "BtCheckIntegrityEntry.h"
#include "BtFileAllocationEntry.h"
#include "RequestGroup.h"
#include "PieceStorage.h"
#include "DownloadEngine.h"
#include "DiskAdaptor.h"
#include "prefs.h"
#include "Option.h"
#include "util.h"
#include "SingletonHolder.h"
#include "Notifier.h"

namespace aria2 {

BtCheckIntegrityEntry::BtCheckIntegrityEntry(RequestGroup* requestGroup)
    : PieceHashCheckIntegrityEntry(requestGroup, nullptr)
{
}

BtCheckIntegrityEntry::~BtCheckIntegrityEntry() = default;

void BtCheckIntegrityEntry::onDownloadIncomplete(
    std::vector<std::unique_ptr<Command>>& commands, DownloadEngine* e)
{
  auto& ps = getRequestGroup()->getPieceStorage();
  ps->onDownloadIncomplete();
  if (getRequestGroup()->getOption()->getAsBool(PREF_HASH_CHECK_ONLY)) {
    return;
  }
  const auto& diskAdaptor = ps->getDiskAdaptor();
  if (diskAdaptor->isReadOnlyEnabled()) {
    // Now reopen DiskAdaptor with read only disabled.
    diskAdaptor->closeFile();
    diskAdaptor->disableReadOnly();
    diskAdaptor->openFile();
  }
  proceedFileAllocation(
      commands, make_unique<BtFileAllocationEntry>(getRequestGroup()), e);
}

void BtCheckIntegrityEntry::onDownloadFinished(
    std::vector<std::unique_ptr<Command>>& commands, DownloadEngine* e)
{
  auto group = getRequestGroup();
  const auto& option = group->getOption();
  if (option->getAsBool(PREF_BT_ENABLE_HOOK_AFTER_HASH_CHECK)) {
    util::executeHookByOptName(group, option.get(),
                               PREF_ON_BT_DOWNLOAD_COMPLETE);
    SingletonHolder<Notifier>::instance()->notifyDownloadEvent(
        EVENT_ON_BT_DOWNLOAD_COMPLETE, group);
  }
  // TODO Currently,when all the checksums
  // are valid, then aria2 goes to seeding mode. Sometimes it is better
  // to exit rather than doing seeding. So, it would be good to toggle this
  // behavior.
  if (!option->getAsBool(PREF_HASH_CHECK_ONLY) &&
      option->getAsBool(PREF_BT_HASH_CHECK_SEED)) {
    proceedFileAllocation(
        commands, make_unique<BtFileAllocationEntry>(getRequestGroup()), e);
  }
}

} // namespace aria2