import random

# Checks that the user enters a valid number of rounds
def int_check(question):
    while True:

        to_check = input(question)

        # Infinite mode
        if to_check == "":
            return "infinite"

        try:
            response = int(to_check)

            if response < 1:
                print("Please enter a number that is 1 or greater.")
            else:
                return response

        except ValueError:
            print("Please enter a valid number.")


# Checks player's choice
def choice_check():

    valid_choices = {
        "r": "rock",
        "p": "paper",
        "s": "scissors",
        "rock": "rock",
        "paper": "paper",
        "scissors": "scissors",
        "xxx": "xxx"
    }

    while True:
        choice = input("Choose Rock (R), Paper (P), or Scissors (S): ").lower()

        if choice in valid_choices:
            return valid_choices[choice]

        print("Please enter R, P, S, Rock, Paper, or Scissors.")

# Main Routine Starts Here
mode = "regular"
rounds_played = 0

player_wins = 0
computer_wins = 0
draws = 0

choices = ["rock", "paper", "scissors"]

print("🎮 Rock Paper Scissors 🎮")
print()

# Ask for number of rounds
num_rounds = int_check(
    "How many rounds would you like? Press <Enter> for infinite mode: "
)

if num_rounds == "infinite":
    mode = "infinite"
    num_rounds = 5

# Game Loop
while rounds_played < num_rounds:

    if mode == "infinite":
        heading = f"\n--- Round {rounds_played + 1} (Infinite Mode) ---"
    else:
        heading = f"\n--- Round {rounds_played + 1} of {num_rounds} ---"

    print(heading)

    player_choice = choice_check()

    # Exit code
    if player_choice == "xxx":
        break

    computer_choice = random.choice(choices)

    print(f"You chose: {player_choice}")
    print(f"Computer chose: {computer_choice}")

    # Determine winner
    if player_choice == computer_choice:
        print("It's a draw!")
        draws += 1

    elif (
        (player_choice == "rock" and computer_choice == "scissors")
        or (player_choice == "paper" and computer_choice == "rock")
        or (player_choice == "scissors" and computer_choice == "paper")
    ):
        print("You win!")
        player_wins += 1

    else:
        print("Computer wins!")
        computer_wins += 1

    rounds_played += 1

    # Increase rounds in infinite mode
    if mode == "infinite":
        num_rounds += 1

# End of Game Statistics
print("\n🎯 Game Over")
print(f"Rounds Played: {rounds_played}")
print(f"Player Wins: {player_wins}")
print(f"Computer Wins: {computer_wins}")
print(f"Draws: {draws}")

if player_wins > computer_wins:
    print("Overall Winner: Player")
elif computer_wins > player_wins:
    print("Overall Winner: Computer")
else:
    print("Overall Result: Draw")