#     Project: Take-Away Game
#     Standard: 91883 (AS1.7) v.1
#     School: Tauranga Boys' College
#     Author: Philipp KLochko
#     Date: 25/03/2024
#     Python: 3.5


import random

# Constants
MAX_CHIPS = 21

# Function to get valid integer input from user
def get_valid_input(prompt):
    while True:
        user_input = input(prompt)
        if user_input.isdigit():
            return int(user_input)
        else:
            print("Please enter a valid integer.")

# Function to check if a string contains only numeric characters
def is_numeric(input_string):
    return input_string.isdigit()

# Function to get valid player name input from user
def get_player_name(prompt):
    while True:
        name = input(prompt)
        if name.strip() and not is_numeric(name):  # Check if name is not empty or whitespace and not numeric
            return name
        else:
            print("Please enter a valid name.")

# Function to play a round of the game
def play_round(player_name):
    chips_left = MAX_CHIPS
    
    while chips_left > 0:
        print("Chips left:", chips_left)
        chips_taken = get_valid_input(f"{player_name}, choose how many chips to take: ")
        
        # Check if chips taken is within valid range
        if 1 <= chips_taken <= min(3, chips_left):
            chips_left -= chips_taken
        else:
            print("Please choose between 1 and", min(3, chips_left))
        
        # Check if the player has won
        if chips_left == 0:
            return player_name

# Header block comment
"""
This program simulates a game where two players take turns removing chips from a pile.
The player who takes the last chip(s) wins the round.
"""

player_one_name = get_player_name("Enter Player One's name: ")
player_two_name = get_player_name("Enter Player Two's name: ")

# Get number of rounds
rounds = get_valid_input("Enter the number of rounds: ")
if rounds <= 0:
    print("Number of rounds must be positive.")
    exit()

# Play rounds
player_scores = {player_one_name: 0, player_two_name: 0}

for round_num in range(1, rounds + 1):
    print("\nRound", round_num)
    winner = play_round(player_one_name)
    player_scores[winner] += 1

    winner = play_round(player_two_name)
    player_scores[winner] += 1

# Determine the winner
if player_scores[player_one_name] > player_scores[player_two_name]:
    print(f"\n{player_one_name} wins with a score of {player_scores[player_one_name]}!")
elif player_scores[player_two_name] > player_scores[player_one_name]:
    print(f"\n{player_two_name} wins with a score of {player_scores[player_two_name]}!")
else:
    print("\nIt's a tie!")