# ai.py
import random
from app import get_flips, apply_move

def choose_move(board, player):
    """
    Simple AI: chooses a random valid move from all legal flips.
    """
    valid_moves = []
    for r in range(8):
        for c in range(8):
            if get_flips(board, r, c, player):
                valid_moves.append((r, c))
    if not valid_moves:
        return None
    return random.choice(valid_moves)