# tic tac toe by Naman Pujari
# using NumPy arrays for aesthetics!
# let's begin...

""" UPDATE 1: 05/15/2017 ~~~~~~~~~~
    NEED TO IMPLEMENT ERROR CHECKING FUNCTION
    NEED TO ALLOW FOR TWO PLAYER COMPATIBILITY (EASY)
        * THIS WILL ALSO AFFECT THE ERROR CHECK FUNCTION AND USER INTERFACE
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ """

import numpy as np

def user_interface():
    valid_choice = False
    while(valid_choice == False):
        user_x = int(input('Enter x-coordinate of your turn'))
        user_y = int(input('Enter y-coordinate of your turn'))
        if((user_x >= 1 and user_x <= 3) and (user_y >= 1 and user_y <=3)):
            valid_choice = True
        else:
            print('Invalid choice (OUT OF BOUNDS)')

    to_continue = error_check(user_x,user_y)
    if(to_continue == 1):
        print('Position is taken, try again...')
    else:
        # np.array elements are rows,columns; so y,x not x,y
        board[user_y][user_x] = user_side
        print(board)

    return win(board)

def error_check(x_query, y_query
    ):
    if(board[y_query][x_query] == ' '):
        return 0
    else:
        return 1

def win(array):
    win_case = 0
    for i in [1,2,3]:
        if((array[i,1] == 'o') and (array[i,2] == 'o') and (array[i,3] == 'o')):
            win_case = 1
            break
    if(win_case == 1):
        return True
    else:
        return False


if __name__ == '__main__':
    winner = False

    board = np.array([[' ','1','2','3'],
                      ['1',' ',' ',' '],
                      ['2',' ',' ',' '],
                      ['3',' ',' ',' ']])
    print('Welcome to tic tac toe')

    user_side = ''
    while(user_side != 'o' and user_side != 'x'):
        user_side = input('Enter "o" or "x" to pick sides... ')
        if(user_side != 'o' and user_side != 'x'):
            print('ERROR (pick an appropriate side please)')
            print()

    print('You have picked', user_side, 'as your side.')

    while(winner == False):
        winner = user_interface()
        print(winner)