# Libraries
import random
import time

# Greetings/Names/Rounds
print("Greetings, what are your names?")

# Input for Player 1's name
while True:
    player1 = input("\nPlayer 1: ")
    if player1.isalpha():
        break 
    else:
        print("\nPlease input a name, so I know you can input a number.")

# Input for Player 2's name
while True:
    player2 = input("\nPlayer 2: ")
    if player2.isalpha():
        break 
    else:
        print("\nPlease input a name, so I know you can input a number.")

# Input for the number of rounds
while True:
    try:
        rounds = input("\nHow many rounds? (1-5) ")
        if rounds.isdigit() and 1 <= int(rounds) <= 5:
            rounds = int(rounds) + 1  # Decrementing rounds to start from 0
            print("Ok, let's begin!")
            rounds = int(rounds)
            break
        else:
            print("\nChoose a number between 1 and 5")
    except ValueError:
        print("Please input a valid number")

# CONSTANTS
MAXCHIPS = 21
 
# Variables 
score1 = 0
score2 = 0

# Game Start
for _ in range(1, rounds):  # Start from 1 to include the first round
    chips = MAXCHIPS
    
    while chips > 0:
        # Player 1's turn
        p1chips = 0
        while p1chips == 0:
            try:
                p1chips = int(input("\n" + player1 + "'s turn. How many chips would you like to take? "))
                if p1chips < 1 or p1chips > min(3, chips):
                    print("\nChoose a number between 1 and", min(3, chips))
                else:
                    chips -= p1chips
                    print("Chips remaining:", chips)
                    if chips <= 0:
                        score1 += 1
                        print("Player one wins!")
                        print("\nPlayer 1 score:", score1)
                        print("\nPlayer 2 score:", score2)
                        break
            except ValueError:
                print("\nPlease input a number")

        if chips <= 0:
            break
        
        # Player 2's turn
        p2chips = 0
        while p2chips == 0:
            try:
                p2chips = int(input("\n" + player2 + "'s turn. How many chips would you like to take? "))
                if p2chips < 1 or p2chips > min(3, chips):
                    print("\nChoose a number between 1 and", min(3, chips))
                else:
                    chips -= p2chips
                    print("Chips remaining:", chips)
                    if chips <= 0:
                        score2 += 1
                        print("Player two wins!")
                        print("\nPlayer 1 score:", score1)
                        print("\nPlayer 2 score:", score2)
                        break
            except ValueError:
                print("\nPlease input a number")

# Print final scores
print("Final scores:")
print("Player 1 scored:", score1)
print("Player 2 scored:", score2)