/* <!-- 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 "CheckIntegrityCommand.h"
#include "CheckIntegrityEntry.h"
#include "DownloadEngine.h"
#include "RequestGroup.h"
#include "Logger.h"
#include "message.h"
#include "prefs.h"
#include "DownloadContext.h"
#include "a2functional.h"
#include "RecoverableException.h"
#include "util.h"
#include "RequestGroupMan.h"
#include "FileAllocationEntry.h"
#include "ServerStatMan.h"

namespace aria2 {

CheckIntegrityCommand::CheckIntegrityCommand
(cuid_t cuid, RequestGroup* requestGroup, DownloadEngine* e,
 const SharedHandle<CheckIntegrityEntry>& entry):
  RealtimeCommand(cuid, requestGroup, e),
  _entry(entry)
{}

CheckIntegrityCommand::~CheckIntegrityCommand() {}

bool CheckIntegrityCommand::executeInternal()
{
  if(getRequestGroup()->isHaltRequested()) {
    getDownloadEngine()->getCheckIntegrityMan()->dropPickedEntry();
    return true;
  }
  _entry->validateChunk();
  if(_entry->finished()) {
    getDownloadEngine()->getCheckIntegrityMan()->dropPickedEntry();
    // Enable control file saving here. See also
    // RequestGroup::processCheckIntegrityEntry() to know why this is
    // needed.
    getRequestGroup()->enableSaveControlFile();
    if(getRequestGroup()->downloadFinished()) {
      getLogger()->notice
        (MSG_VERIFICATION_SUCCESSFUL,
         getRequestGroup()->getDownloadContext()->getBasePath().c_str());
      std::vector<Command*> commands;
      try {
        _entry->onDownloadFinished(commands, getDownloadEngine());
      } catch(RecoverableException& e) {
        std::for_each(commands.begin(), commands.end(), Deleter());
        throw;
      }
      getDownloadEngine()->addCommand(commands);
    } else {
      getLogger()->error
        (MSG_VERIFICATION_FAILED,
         getRequestGroup()->getDownloadContext()->getBasePath().c_str());
      std::vector<Command*> commands;
      try {
        _entry->onDownloadIncomplete(commands, getDownloadEngine());
      } catch(RecoverableException& e) {
        std::for_each(commands.begin(), commands.end(), Deleter());
        throw;
      }
      getDownloadEngine()->addCommand(commands);
    }
    getDownloadEngine()->setNoWait(true);
    return true;
  } else {
    getDownloadEngine()->addCommand(this);
    return false;
  }
}

bool CheckIntegrityCommand::handleException(Exception& e)
{
  getDownloadEngine()->getCheckIntegrityMan()->dropPickedEntry();
  getLogger()->error(MSG_FILE_VALIDATION_FAILURE, e,
                     util::itos(getCuid()).c_str());
  getLogger()->error
    (MSG_DOWNLOAD_NOT_COMPLETE,
     util::itos(getCuid()).c_str(),
     getRequestGroup()->getDownloadContext()->getBasePath().c_str());
  return true;
}

} // namespace aria2