#include <iostream>
#include <string>

using namespace std;

string player1 = "Player 1";
string player2 = "Player 2";

int player = 1;
void gameboard();
char space[9] = {'1', '2', '3', '4', '5', '6', '7', '8', '9'};
bool winCheck();
void takeTurns(bool, int);
void move(int);
bool legalMove(int);


int main()
{
    cout << "Welcome to Devyn's Super Awesome Tic Tac Toe Game." << endl
         << "Please enter name for Player 1." << endl;
    cin  >> player1;
    cout << "Please enter name for Player 2." << endl;
    cin  >> player2;
    cout << endl;

    gameboard();

    while (!winCheck())
    {
        cout << "Player = " << player << endl;
        takeTurns(winCheck(), player);
        cout << "End of loop" << endl;
        cout << player << endl;
    }


    char end;
    cout << "Type any key, and press enter." << endl;
    cin  >> end;

    return 0;
}

void gameboard()
{
    cout << " " << space[0] << " | " << space[1] << " | " << space[2] << endl
         << " " << "--------" << endl
         << " " << space[3] << " | " << space[4] << " | " << space[5] << endl
         << " " << "--------" << endl
         << " " << space[6] << " | " << space[7] << " | " << space[8] << endl << endl;
}

bool winCheck()
{
    if (space[0] == space[1] && space[2] == space[0])
        return true;
    if (space[3] == space[4] && space[5] == space[3])
        return true;
    if (space[6] == space[7] && space[8] == space[6])
        return true;
    if (space[0] == space[3] && space[6] == space[0])
        return true;
    if (space[1] == space[4] && space[7] == space[1])
        return true;
    if (space[2] == space[5] && space[8] == space[2])
        return true;
    if (space[0] == space[4] && space[8] == space[0])
        return true;
    if (space[6] == space[4] && space[2] == space[6])
        return true;
    else
        return false;
}

void takeTurns(bool winCheck, int player)
{
    if (!winCheck)
    {
        if (player == 1)
            player = 0;
        else
            player = 1;
    }

    move(player);
}

void move(int player)
{
    int box;

    if (player == 1)
        cout << "Enter move " << player1 << endl;
    else
        cout << "Enter move " << player2 << endl;

    cin >> box;

    if (legalMove(box))
    {
        if (player == 0)
            space[box-1] = 'X';
        else
            space[box-1] = 'O';
    }

    gameboard();
}

bool legalMove(int box)
{
    if (space[box-1] == 'X' || space[box-1] == 'O')
    {
        cout << "You cannot place move on an already taken space." << endl;
        return false;
    }

    if (box > 9)
    {
        cout << "You must enter a number on the board." << endl;
        return false;
    }

    return true;
}