//
//  main.cpp
//  TicTacToe
//
//  Created by Aldís Eik Armarsdóttir  on 10/12/17.
//  Copyright © 2017 Aldís Eik Armarsdóttir . All rights reserved.
//

#include <iostream>
using namespace std;

const int MAX_SIZE = 3;

void print_char (char tictactoe[][MAX_SIZE])
{
    for(int i = 0; i < MAX_SIZE; i++)
    {
        for(int j = 0; j < MAX_SIZE; j++)
        {
            cout << tictactoe[i][j] << " ";
        }
        cout << endl;
    }
}

void game_players(int& position, char& player, char playerX)
{
    if(player == playerX)
    {
        cout << "X position: ";
        cin >> position;
    }
    else
    {
        cout << "O position: ";
        cin >> position;
    }
}

void players_switch(int& position, char& player, char playerX, char playerO)
{
    if(player == playerX)
    {
        player = playerO;
    }
    else
    {
        player = playerX;
    }
}

bool game_playing (char tictactoe[][MAX_SIZE], int& position, char& player, char playerX, char playerO)
{
    bool positionOK = false;

    do{
        if (position > 9 || position < 1 || position < - 1 || position == playerX || position == playerO)
        {
            cout << "Illegal move!" << endl;
            game_players(position, player, playerX);
        }
        else if (position > 0 && position <= 9)
        {
            positionOK = true;
            tictactoe[0][position - 1] = player;
        }
    }while (!positionOK);

    return position;
}

bool lookforwin(char tictactoe[][MAX_SIZE], bool& win, char& player)
{
    for(int i = 0; i < 3; i++)
    {
        if ((tictactoe[i][0] == tictactoe[i][1] && tictactoe[i][1] == tictactoe[i][2]) || (tictactoe[0][i] == tictactoe[1][i] && tictactoe[1][i] == tictactoe[2][i]) || (tictactoe[0][0] == tictactoe[1][1] && tictactoe[1][1] == tictactoe[2][2]) || (tictactoe[0][2] == tictactoe[1][1] && tictactoe[1][1] == tictactoe[2][0]))
        {
            win = true;
        }
    }

    if (win == true) {
        cout << "Winner is: " << player << endl;
    }

    return win;
}


int main()
{
    char tictactoe[MAX_SIZE][MAX_SIZE] = { {'1','2','3'}, {'4','5','6'}, {'7','8','9'} };
    char playerX = 'X', playerO = 'O';
    char player = playerX;
    int position = 0;
    bool win = false;
    int counter = 0;

    print_char(tictactoe);


    do
    {
        if (counter == 9) {
            cout << "It's a draw!!!!!!!!" << endl;
            break;
        }
        game_players(position, player, playerX);
        //errors ef char, eða 'X', eða 'O' virka ekki
        game_playing(tictactoe, position, player, playerX, playerO);
        print_char(tictactoe);
        lookforwin(tictactoe, win, player);
        //lykkjan þarf að stoppa eftir að win eða draw er til staðar + prentar þrisvar þegar skáruna er
        //setja draw in eftir 9 tilraunir
        players_switch(position, player, playerX, playerO);
        counter++;
    }while(!win);     //setja draw inní dowhile eftir 9 skipti

    return 0;
}