#---------------------------------------------------
#   name: 21
#   author: Cody McQueen
#   purpose: 21 game
#   created: 
#----------------------------------------------------

import random

def play_21():
    print("Welcome to the game of 21")
    player1_name = input("Enter Player 1's name: ")
    player2_name = input("Enter Player 2's name: ")

    num_rounds = int(input("How many rounds would you like to play? "))

    player1_score = 0
    player2_score = 0

    for round_num in range(1, num_rounds + 1):
        print("\nRound", round_num)
        num_chips = random.randint(10, 20)  # Randomly choose initial number of chips
        print("Initial number of chips:", num_chips)

        current_player = player1_name

        while num_chips > 0:
            print("\n{}'s turn. Pick how many?".format(current_player))
            chips_taken = int(input("Enter 1, 2, or 3: "))
            while chips_taken < 1 or chips_taken > 3 or chips_taken > num_chips:
                print("Invalid input. Please enter a number between 1 and 3 and less than the remaining chips.")
                chips_taken = int(input("Enter 1, 2, or 3: "))
            num_chips -= chips_taken
            print("Number of chips remaining:", num_chips)

            if num_chips <= 0:
                print("\n{} wins this round!".format(current_player))
                if current_player == player1_name:
                    player1_score += 1
                else:
                    player2_score += 1
                break

            # Switch players
            current_player = player1_name if current_player == player2_name else player2_name

    print("\nGame over!")
    print("Final scores:")
    print("{}: {}".format(player1_name, player1_score))
    print("{}: {}".format(player2_name, player2_score))
    if player1_score > player2_score:
        print("{} wins!".format(player1_name))
    elif player2_score > player1_score:
        print("{} wins!".format(player2_name))
    else:
        print("It's a tie!")

play_21()