#-------------------------------------------------
    #Project: Take-Away Game
    #Standard: 91883 (AS1.7) v.1
    #School: Tauranga Boys' College
    #Author: Johan Samuel Joji
    #Date: 14 - March - 2025
    #Python: 3.5
#-------------------------------------------------

# Constant value
MAX_CHIPS = 21

# making sure that the rounds inputted does not get to a negative number
def get_positive_int(prompt):
    while True:
        try:
            value = int(input(prompt))
            if value < 1 or value > 3:
                print("Please enter a number between 1 and 3.")
            else:
                return value
        except ValueError: # if the player exceeds or enters a negative number from 1 to 5 rounds
            print("Please enter a valid number.")

# Players choose the number of chips taken for each round from 1 to 3
def play_round(chips_left, player_name):
    while True:
        chips_taken = get_positive_int(player_name + ", how many chips do you want to take? (1-3): ")
        if chips_taken <= chips_left:
            chips_left -= chips_taken
            print(player_name, "took", chips_taken, "chips. Chips left:", chips_left)
            return chips_left
        else: # if player chooses a number not given from the list
            print("Please take between 1 and 3 chips, and no more than", chips_left, "chips.")

# Making sure player names are actual letters and not any numbers added onto it
def get_player_name(player_number):
    while True:
        player_name = input("Enter Player " + str(player_number) + "'s name: ")
        if player_name.isalpha():
            return player_name
        else: # If names are inputted as numbers
            print("Invalid name. Please enter a name with only alphabetic characters.")

# Gameplay
def main():
    player_one_score = 0
    player_two_score = 0

    # Player Names
    player_one_name = get_player_name(1)
    player_two_name = get_player_name(2)

    # Number of rounds between 1 and 5
    rounds = get_positive_int("How many rounds do you want to play? (1-5): ")

    while rounds > 0:
        print("Round", rounds, "starts! Maximum chips per round:", MAX_CHIPS)

        # Number of chips at the beginning of the game
        chips_left = MAX_CHIPS

        # If player one wins the round 
        while chips_left > 0:
            chips_left = play_round(chips_left, player_one_name)
            if chips_left <= 0:
                print(player_one_name, "wins this round!")
                player_one_score += 1
                break

            # If player two wins the round
            chips_left = play_round(chips_left, player_two_name)
            if chips_left <= 0:
                print(player_two_name, "wins this round!")
                player_two_score += 1
                break

        # Reducing the number of rounds after each round
        rounds -= 1

    # Final Score
    print("Game Over!")
    if player_one_score > player_two_score:
        print(player_one_name, "is the winner with", player_one_score, "points!")
    elif player_two_score > player_one_score:
        print(player_two_name, "is the winner with", player_two_score, "points!")
    else:
        print("It's a tie!")

if __name__ == "__main__":
    main()