"""
Felix Muzny
DS 2000
Lecture 3
September 13, 2024

Updates to improve:
- gets all number inputs from the user
- uses a constant for the days in the year

a program to say how many days you've been alive!
"""

# constants always go IN_CAPITALS at the top of the file!
DAYS_IN_YEAR = 365
# you might also want a current year constant
CURRENT_YEAR = 2024

def main():
    # Strategy:
    # number of days in first year
    # plus middle years
    # plus days this year
    # plus the leap days

    # Step 1: greet the user
    # Felix likes to put an extra space at the ends of input to make it visually
    # nicer when you are typing the answer
    # "what is your name?felix" versus "what is your name? felix"
    # Laney likes to put the special newline character \n so you
    # type your answer on the next line! name = input("what is your name?\n")
    name = input("what is your name? ")
    print("bday calculator for", name)

    # Step 2: get numerical information from the user --
    # birthyear, birthday number, today day number
    # if we don't convert the type of input() to an int, later we'll get:
    # TypeError: unsupported operand type(s) for -: 'int' and 'str'
    birthyear = int(input("what year were you born? "))
    birthday_number = int(input("what number day of the year were you born on? "))
    today_number = int(input("what number day of the year is it today? "))

    # number of days in first year
    # subtract 1 because we want to count the first day that you
    # were alive!
    first_year_days = (DAYS_IN_YEAR - birthday_number - 1)

    # calculate the number of middle years
    # subtract 1 from current year because the
    # number of "middle years" is age - 1
    # example: you were born in 2021:
    # 2024 - 2021 - 1 = 2
    # 2021: first_year_days
    # 2022: full year (1st middle year)
    # 2023: full year (2nd middle year)
    # 2024: today_number
    middle_years = ((CURRENT_YEAR - 1) - birthyear)

    # prompt number for leap years because the case when the
    # user was born in a leap year is difficult!
    # don't include this year because we haven't "lived" the
    # leap day yet! (think about why)
    leap_days = int(input("how many leap years from your birth year through last year? "))

    # add everything together
    total_days = first_year_days + (middle_years * DAYS_IN_YEAR) + today_number + leap_days
    print("total days alive:", total_days)

# don't forget to call main()!
# this should be the *only* code outside of main :)
main()