#include <iostream>
#include <string>
using std::cout;
using std::cin;

#include "tictactoe.h"

// constructor
ticTacToe::ticTacToe()
{
	int i;

	turn = 1;

	for(i = 0; i < 9; i++)
	{
		board[i] = 0;
	}
};

// Put the game on
int ticTacToe::startGame()
{
	play();
	return 0;
};

// Do the real play
int ticTacToe::play()
{

    // Check at the start to avoid futile plays
    if(checkDraw() == true)
        return 0;

	drawBoard();
	cout << (turn == 1?"X ":"O ") << "turn." << endl;
	cout << "Set the position you want to play: ";
	cin >> position;

	while(checkValid(position) != true)
	{
	    play();
	}


    // Check at the end to prize the winner
    if(checkWin() == true)
        return 0;
}

// Check if it's a real and valid position
int ticTacToe::checkValid(int value)
{
	if(value < 1 || value > 9)
	{
		cout << "Invalid value, put a number between 1 and 9." << endl;
		return false;
	}
	if(board[value -1] != 0)
	{
		cout << "Position already played, choose another one." << endl;
		return false;
	}
	else
	{
		board[value - 1] = turn;
		cout << "\n" << endl;
		return true;
	}

};

// Check for the win
int ticTacToe::checkWin()
{
	if(board[0] == turn && board[1] == turn && board[2] == turn ||
			board[0] == turn && board[3] == turn && board[6] == turn ||
			board[0] == turn && board[4] == turn && board[8] == turn ||
			board[1] == turn && board[4] == turn && board[7] == turn ||
			board[2] == turn && board[5] == turn && board[8] == turn ||
			board[2] == turn && board[4] == turn && board[6] == turn ||
			board[3] == turn && board[4] == turn && board[5] == turn ||
			board[6] == turn && board[7] == turn && board[8] == turn)
	{
		displayWinMessage();
		return true;
	}
	else
	{
		if(turn == 1)
		{
			turn = 2;
		}
		else
		{
			turn = 1;
		}

		play();

	}

};

// Check for a draw game
int ticTacToe::checkDraw()
{
    int i;
    int counter;

    counter = 0;

   for(i = 0; i < 9; i++)
   {
       if(board[i] == 0)
       {
           counter++;
       }
   }

   if(counter == 0)
   {
       displayDrawMessage();
       return true;
   }
   else
   {
       return false;
   }

};

// Draw the most beatifull Tic Tac Toe board on the world
void ticTacToe::drawBoard()
{
	int i;
	int sum;
	sum = 1;

	for(i = 0; i < 9; i++)
	{

		if(i == 3 || i == 6)
		{
			cout << "\n-----|-----|-----\n";
		}

		if(board[i] == 1)
		{
			if(i == 0 || i == 3 || i == 6)
			{
				cout << "  X  |";
			}
			else if(i == 2 || i == 5 || i ==8)
			{
				cout << "|  X  ";
			}
			else
			{
				cout << "  X  ";
			}
		}
		else if(board[i] == 2)
		{
			if(i == 0 || i == 3 || i == 6)
			{
				cout << "  O  |";
			}
			else if(i == 2 || i == 5 || i ==8)
			{
				cout << "|  O  ";
			}
			else
			{
				cout << "  O  ";
			}


		}
		else
		{
			if(i == 0 || i == 3 || i == 6)
			{
				cout << "  " << (sum = i + 1) <<"  |";
			}
			else if(i == 2 || i == 5 || i ==8)
			{
				cout << "|  " << (sum = i + 1) << "  ";
			}
			else
			{
				cout << "  " << (sum = i + 1) << "  ";
			}
		}
	}

	cout << "\n" << endl;

};

// Two fucking loser players draw the game
void ticTacToe::displayDrawMessage()
{
    drawBoard();
	cout << "Draw Game!" << endl;
};

// Shows that someone won the game
void ticTacToe::displayWinMessage()
{
    drawBoard();
	cout << "Congratulations, you win!" << endl;
};