/* <!-- 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 --> */
#ifndef _D_PEER_ABSTRACT_COMMAND_H_
#define _D_PEER_ABSTRACT_COMMAND_H_

#include "Command.h"
#include "SharedHandle.h"
#include "TimerA2.h"

namespace aria2 {

class DownloadEngine;
class Exception;
class Peer;
class SocketCore;

class PeerAbstractCommand : public Command {
private:
  Timer _checkPoint;
  time_t _timeout;
  DownloadEngine* _e;
  SharedHandle<SocketCore> _socket;
  SharedHandle<Peer> _peer;

  bool _checkSocketIsReadable;
  bool _checkSocketIsWritable;
  SharedHandle<SocketCore> _readCheckTarget;
  SharedHandle<SocketCore> _writeCheckTarget;
  bool _noCheck;
protected:
  DownloadEngine* getDownloadEngine() const
  {
    return _e;
  }

  const SharedHandle<SocketCore>& getSocket() const
  {
    return _socket;
  }

  void createSocket();

  const SharedHandle<Peer>& getPeer() const
  {
    return _peer;
  }

  void setTimeout(time_t timeout) { _timeout = timeout; }
  virtual bool prepareForNextPeer(time_t wait);
  virtual void onAbort() {};
  // This function is called when DownloadFailureException is caught right after
  // the invocation of onAbort().
  virtual void onFailure() {};
  virtual bool exitBeforeExecute() = 0;
  virtual bool executeInternal() = 0;
  void setReadCheckSocket(const SharedHandle<SocketCore>& socket);
  void setWriteCheckSocket(const SharedHandle<SocketCore>& socket);
  void disableReadCheckSocket();
  void disableWriteCheckSocket();
  void setNoCheck(bool check);
  void updateKeepAlive();
public:
  PeerAbstractCommand(cuid_t cuid,
                      const SharedHandle<Peer>& peer,
                      DownloadEngine* e,
                      const SharedHandle<SocketCore>& s =
                      SharedHandle<SocketCore>());

  virtual ~PeerAbstractCommand();

  virtual bool execute();
};

} // namespace aria2

#endif // _D_PEER_ABSTRACT_COMMAND_H_