/* <!-- 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_DEFAULT_BT_MESSAGE_DISPATCHER_H_
#define _D_DEFAULT_BT_MESSAGE_DISPATCHER_H_

#include "BtMessageDispatcher.h"

#include <deque>

#include "a2time.h"
#include "Command.h"

namespace aria2 {

class DownloadContext;
class PeerStorage;
class PieceStorage;
class BtMessage;
class BtMessageFactory;
class Peer;
class Piece;
class Logger;
class RequestGroupMan;

class DefaultBtMessageDispatcher : public BtMessageDispatcher {
private:
  cuid_t cuid;
  std::deque<SharedHandle<BtMessage> > messageQueue_;
  std::deque<RequestSlot> requestSlots_;
  SharedHandle<DownloadContext> downloadContext_;
  SharedHandle<PeerStorage> peerStorage_;
  SharedHandle<PieceStorage> pieceStorage_;
  WeakHandle<BtMessageFactory> messageFactory_;
  SharedHandle<Peer> peer_;
  WeakHandle<RequestGroupMan> requestGroupMan_;
  time_t requestTimeout_;
  Logger* logger_;
public:
  DefaultBtMessageDispatcher();

  virtual ~DefaultBtMessageDispatcher();
  
  virtual void addMessageToQueue(const SharedHandle<BtMessage>& btMessage);

  virtual void addMessageToQueue
  (const std::vector<SharedHandle<BtMessage> >& btMessages);

  virtual void sendMessages();

  virtual void doCancelSendingPieceAction(size_t index, uint32_t begin, size_t length);

  virtual void doCancelSendingPieceAction(const SharedHandle<Piece>& piece);

  virtual void doAbortOutstandingRequestAction(const SharedHandle<Piece>& piece);

  virtual void doChokedAction();

  virtual void doChokingAction();

  virtual void checkRequestSlotAndDoNecessaryThing();

  virtual bool isSendingInProgress();

  virtual size_t countMessageInQueue() {
    return messageQueue_.size();
  }

  virtual size_t countOutstandingRequest()
  {
    return requestSlots_.size();
  }
  
  virtual bool isOutstandingRequest(size_t index, size_t blockIndex);

  virtual RequestSlot getOutstandingRequest(size_t index, uint32_t begin, size_t length);

  virtual void removeOutstandingRequest(const RequestSlot& slot);

  virtual void addOutstandingRequest(const RequestSlot& requestSlot);

  virtual size_t countOutstandingUpload();

  const std::deque<SharedHandle<BtMessage> >& getMessageQueue() const
  {
    return messageQueue_;
  }

  const std::deque<RequestSlot>& getRequestSlots() const
  {
    return requestSlots_;
  }

  void setPeer(const SharedHandle<Peer>& peer);

  void setDownloadContext(const SharedHandle<DownloadContext>& downloadContext);

  void setPieceStorage(const SharedHandle<PieceStorage>& pieceStorage);

  void setPeerStorage(const SharedHandle<PeerStorage>& peerStorage);

  void setBtMessageFactory(const WeakHandle<BtMessageFactory>& factory);

  void setRequestGroupMan(const WeakHandle<RequestGroupMan>& rgman);

  void setCuid(cuid_t cuid)
  {
    this->cuid = cuid;
  }

  void setRequestTimeout(time_t requestTimeout) {
    requestTimeout_ = requestTimeout;
  }
};

typedef SharedHandle<DefaultBtMessageDispatcher> DefaultBtMessageDispatcherHandle;

} // namespace aria2

#endif // _D_DEFAULT_BT_MESSAGE_DISPATCHER_H_