#ifndef TICTACTOE_H_
#define TICTACTOE_H_

// (c) Markus Lumpe, CS 229 Spring 2007

#include <string>		// strings
#include <iostream>

using namespace std;

class TicTacToe;

class TicTacToeView
{
public:
	virtual ~TicTacToeView() {};	// kill warning

	virtual void registerGame( TicTacToe* aGame ) = 0;
	virtual void printBoard() = 0;
	virtual void draw() = 0;
	virtual void declareWinner( int aPlayer ) = 0;
};

class MoveException
{
private:
	string fMessage;
	
public:
	MoveException( string aMessage );
	
	string getMessage();
};

class TicTacToe
{
private:
	int fBoard[3][3];
	int fFieldsSet;
	bool fPlay;
	TicTacToeView& fView;
	int fPlayerId;
	int fComputerId;

	static int fOptimalMoves[9];
	
	void setMove( int aMove, int aPlayerId );
	void unsetMove( int aMove );
	bool isFree( int aMove );
	int computeComputerMove();
	int findComputerResponse( int aMove1, int aMove2 );
	int countSetFields();
	void announceGameOver();
	void announcePlayerHasWon( int aPlayer );
	bool checkWin();
	bool checkRows();
	bool checkRow( int aRow );
	bool checkColumns();
	bool checkColumn( int aColumn );
	bool checkNWToSE();
	bool checkNEToSW();
	
	
public:
	TicTacToe( TicTacToeView& aView );
	
	int getField( int aIndex );
	void setField( int aIndex, int aValue );

	int performComputerMove( int aPlayerId, int aComputerId );
	bool isActive();
	void isGameOver( int aPlayer );
};

#endif /*TICTACTOE_H_*/