/*
 * Spider-Arachnid: A plugin for the Video Disk Recorder
 *
 * Copyright (C) 2005-2007, Thomas Günther <tom@toms-cafe.de>
 *
 * 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.
 *
 * $Id: history.h 87 2007-06-22 22:37:36Z tom $
 */

#ifndef VDR_SPIDER_HISTORY_H
#define VDR_SPIDER_HISTORY_H

#include "spider.h"
class Pack;
class Pile;
typedef Array<Pile*> Piles;
class FinalHeap;
class Move;
typedef Vector<Move*> Moves;


/** --- class History ------------------------------------------------------ **/

class History
{
private:
  Moves history;
  unsigned int executed;

public:

  /** Constructor */
  History();

  /** Destructor */
  ~History();

  /** Current move in the history */
  Move* current();

  /** Add a new move */
  void add(Move* move);

  /** Set previous move as current */
  void backward();

  /** Set next move as current */
  void forward();

  /** Are there executed moves in the history */
  bool movesExecuted();

  /** Are there moves to execute in the history */
  bool movesToExecute();
};


/** --- base class Move ---------------------------------------------------- **/

class Move
{
public:

  /** Destructor */
  virtual ~Move() {};

  /** Do the move */
  virtual void execute() = 0;

  /** Redo the move */
  virtual void takeBack() = 0;
};


/** --- class DealMove ----------------------------------------------------- **/

class DealMove : public Move
{
private:
  Pack* source;
  Piles& destination;

public:

  /** Constructor */
  DealMove(Pack* s, Piles& d);

  /** Do the move */
  void execute();

  /** Redo the move */
  void takeBack();
};


/** --- class NormalMove --------------------------------------------------- **/

class NormalMove : public Move
{
private:
  Pile* source;
  Pile* destination;
  int count;
  bool turn;

public:

  /** Constructor */
  NormalMove(Pile* s, Pile* d, int c, bool t);

  /** Do the move */
  void execute();

  /** Redo the move */
  void takeBack();
};


/** --- class FinalMove ---------------------------------------------------- **/

class FinalMove : public Move
{
private:
  Pile* source;
  FinalHeap* destination;
  int count;
  bool turn;
  bool bonus;

public:

  /** Constructor */
  FinalMove(Pile* s, FinalHeap* d, int c, bool t, bool b);

  /** Do the move */
  void execute();

  /** Redo the move */
  void takeBack();
};

#endif // VDR_SPIDER_HISTORY_H