import random


# Check that users have entered a valid
# option based on a list
def string_checker(question, valid_ans=("yes", "no")):
    error = f"Please enter a valid option from the following list: {valid_ans}"

    while True:

        # Get user response and make sure it's lowercase
        user_response = input(question).lower()

        for var_item in valid_ans:
            # check if the user response is a word in the list
            if var_item == user_response:
                return var_item

            # check if the user response is the same as
            # the first letter of an item in the list
            elif user_response == var_item[0]:
                return var_item

        # print error if user does not enter something that is valid
        print(error)
        print()


# Displays instructions
def instruction():
    print('''

**** Instructions ****

To begin, choose the number of rounds 

Then play against the computer.  


Press <xxx> to end the game at anytime.

Good Luck!
    ''')


# checks for an integer more than 0 (allows <enter>)
def int_check(question, low, high):
    while True:
        error = f"Please enter an integer that from {low} to {high}."

        to_check = input(question)



        try:
            response = int(to_check)

            # checks that the number is more than / equal to 1
            if low <= response <= high:
                return response
            else:
                print(error)

        except ValueError:
            print(error)


# compares user / computer choice and returns
# result (win / lose / tie)



# Main Routine Starts here

# Intialise game variables

rounds_played = 0
rounds_lost = 0

game_history = []

# Game Heading - game play starts here
print("Multiplication Quiz")
print()


# ask user if they want to see the instructions and display
# them if requested
want_instructions = string_checker("Do you want to read the instructions? ")

# checks users enter yes (y) or no (n)
if want_instructions == "yes":
    instruction()

# Ask user for number of rounds
num_rounds = int_check("How many rounds would you like? (1-20): ",1,20)

# Game loop starts here
while rounds_played < num_rounds:
    result = "lose"
    number_1 = random.randint(1,12)
    number_2 = random.randint(1,12)

    rounds_heading = f"\n💿💿💿 Round {rounds_played + 1} of {num_rounds} 💿💿💿"
    print(rounds_heading)
    # get user choice

    user_choice = int_check(f"What does {number_1}*{number_2}=? ",1,400)

    if user_choice == (number_1*number_2):
        result = "win"



    # Adjust game lost to game win

    if result == "loose":
        rounds_lost += 1
        feedback = "You suck you got it wrong"
    else:
        feedback = "Good job you nerd it the right answer!"

    # Set up round feedback and output it user.
    # Add it to the game history list (include the round number)
    round_feedback = f"The answer is : {number_1*number_2}, {feedback}"
    history_item = f"Round: {rounds_played + 1} - {round_feedback}"

    print(round_feedback)
    game_history.append(history_item)

    rounds_played += 1





# Game History / Statistics area

if rounds_played > 0:
    # Calculate Statistics
    rounds_won = rounds_played - rounds_lost
    percent_won = rounds_won / rounds_played * 100
    percent_lost = rounds_lost / rounds_played * 100


    # Output Game Statistics
    print("Game Statistics")
    print(f" Correct: {percent_won: .2f}% \t "
          f" Incorrect: {percent_lost: .2f}% \t")



    # ask user if they want to see their game history and output it if requested
    see_history = string_checker("\nDo you want to see your game history? ")
    if see_history == "yes":
        print(item)

    print()
    print("Thanks for playing you actual nerd!!!!")