import os

MIN_CELL_WIDTH = 15


def query(text):
    return input(f"{text} \n> ")


def query_int(text):
    try:
        ans = query(text)
        return int(ans)
    except ValueError:
        print("Please enter a valid number!")
        return query_int(text)


def clear():
    os.system("cls" if os.name in ("nt", "dos") else "clear")


def query_yes_no(question, default="yes"):
    """Ask a yes/no question via raw_input() and return their answer.

    https://stackoverflow.com/questions/3041986/apt-command-line-interface-like-yes-no-input

    "question" is a string that is presented to the user.
    "default" is the presumed answer if the user just hits <Enter>.
            It must be "yes" (the default), "no" or None (meaning
            an answer is required of the user).

    The "answer" return value is True for "yes" or False for "no".
    """
    valid = {"yes": True, "y": True, "ye": True, "no": False, "n": False}
    if default is None:
        prompt = " [y/n] "
    elif default == "yes":
        prompt = " [Y/n] "
    elif default == "no":
        prompt = " [y/N] "
    else:
        raise ValueError("invalid default answer: '%s'" % default)

    while True:
        choice = query(question + prompt).lower()
        if default is not None and choice == "":
            return valid[default]
        elif choice in valid:
            return valid[choice]
        else:
            print("Please respond with 'yes' or 'no' (or 'y' or 'n').")


def remove_line(d):
    for key in d.keys():
        del d[key][-1]


def calc_points(guess, result):
    if guess == result:
        return 20 + guess * 10
    else:
        return -10 * abs(guess - result)


def print_standings(players, guesses, results):
    # Header
    width = max(MIN_CELL_WIDTH, *[len(player) for player in players])

    print("| Round |", end="")
    for player in players:
        pad = " " * (width - len(player) - 2)
        print(f" {player}{pad} |", end="")
    print()
    print("-" * (9 + len(players) * (width + 1)))

    # Data
    points = {player: 0 for player in players}
    for num_round in range(1, len(guesses[players[0]]) + 1):
        pad = 7 - len(str(num_round)) - 2
        print(f"| {' ' * pad}{num_round} |", end="")

        for player in players:
            if num_round <= len(results[player]):
                points[player] += calc_points(guesses[player][num_round - 1], results[player][num_round - 1])
                text = f"{points[player]} - {guesses[player][num_round - 1]} ({results[player][num_round - 1]})"
            else:
                text = f"??? - {guesses[player][num_round - 1]} (?)"

            pad = " " * (width - len(text) - 2)
            print(f" {pad}{text} |", end="")
        print()


def main():
    # SETUP
    clear()
    print("Welcome! This is WiZaRδ!\n")

    players = [name.strip() for name in query("Enter Player Names (separated by comma)").split(",")]
    guesses = {player: [] for player in players}
    results = {player: [] for player in players}

    num_rounds = 60 // len(players)

    # NORMAL GAMEPLAY

    for i in range(1, num_rounds + 1):
        print("\n\n")
        print(f"Round {i} of {num_rounds}")
        print(f"{players[(i - 1) % len(players)]} deals cards, {players[i % len(players)]} begins\n\n")

        # INPUT GUESSES

        print()
        while True:
            guess_sum = 0
            for j in range(i, i + len(players)):
                player = players[j % len(players)]
                guess = query_int(f"{player}, enter your guess{f' (not {i - guess_sum})' if j == i + len(players) - 1 and i > 3 else ''}!")
                guesses[player] += [guess]
                guess_sum += guess
            if not query_yes_no("Reenter guesses?", default="no"):
                break
            else:
                remove_line(guesses)

        # PRINT STANDINGS
        print()
        print_standings(players, guesses, results)

        # INPUT RESULTS
        print()
        while True:
            for j in range(i, i + len(players)):
                player = players[j % len(players)]
                result = query_int(f"{player}, how many tricks did you take?")
                results[player] += [result]
            if not query_yes_no("Reenter results?", default="no"):
                break
            else:
                remove_line(results)

        # PRINT STANDINGS
        print()
        print_standings(players, guesses, results)


if __name__ == "__main__":
    main()