"""
Calendar

From: BASIC Computer Games (1978)
      Edited by David Ahl#

   This program prints out a calendar
for any year. You must specify the
starting day of the week of the year in
statement 130. (Sunday(0), Monday
(-1), Tuesday(-2), etc.) You can determine
this by using the program WEEKDAY.
You must also make two changes
for leap years in statement 360 and 620.
The program listing describes the necessary
changes. Running the program produces a
nice 12-month calendar.
   The program was written by Geofrey
Chase of the Abbey, Portsmouth, Rhode Island.
"""

from typing import Tuple


def parse_input() -> Tuple[int, bool]:
    """
    function to parse input for weekday and leap year boolean
    """

    days_mapping = {
        "sunday": 0,
        "monday": -1,
        "tuesday": -2,
        "wednesday": -3,
        "thursday": -4,
        "friday": -5,
        "saturday": -6,
    }

    day = 0
    leap_day = False

    correct_day_input = False
    while not correct_day_input:
        weekday = input("INSERT THE STARTING DAY OF THE WEEK OF THE YEAR:")

        for day_k in days_mapping.keys():
            if weekday.lower() in day_k:
                day = days_mapping[day_k]
                correct_day_input = True
                break

    while True:
        leap = input("IS IT A LEAP YEAR?:")

        if "y" in leap.lower():
            leap_day = True
            break

        if "n" in leap.lower():
            leap_day = False
            break

    return day, leap_day


def calendar(weekday: int, leap_year: bool) -> None:
    """
    function to print a year's calendar.

    input:
        _weekday_: int - the initial day of the week (0=SUN, -1=MON, -2=TUES...)
        _leap_year_: bool - indicates if the year is a leap year
    """
    months_days = [0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31]
    days = "S        M        T        W        T        F        S\n"
    sep = "*" * 59
    years_day = 365
    d = weekday

    if leap_year:
        months_days[2] = 29
        years_day = 366

    months_names = [
        " JANUARY ",
        " FEBRUARY",
        "  MARCH  ",
        "  APRIL  ",
        "   MAY   ",
        "   JUNE  ",
        "   JULY  ",
        "  AUGUST ",
        "SEPTEMBER",
        " OCTOBER ",
        " NOVEMBER",
        " DECEMBER",
    ]

    days_count = 0  # S in the original program

    # main loop
    for n in range(1, 13):
        days_count += months_days[n - 1]
        print(
            f"** {days_count} ****************** {months_names[n - 1]} "
            f"****************** {years_day - days_count} **\n"
        )
        print(days)
        print(sep)

        for _ in range(1, 7):
            print("\n")
            for g in range(1, 8):  # noqa
                d += 1
                d2 = d - days_count

                if d2 > months_days[n]:
                    break

                if d2 <= 0:
                    print("  ", end="       ")
                elif d2 < 10:
                    print(f" {d2}", end="       ")
                else:
                    print(f"{d2}", end="       ")
            print()

            if d2 >= months_days[n]:
                break

        if d2 > months_days[n]:
            d -= g

        print("\n")

    print("\n")


def main() -> None:
    print(" " * 32 + "CALENDAR")
    print(" " * 15 + "CREATIVE COMPUTING  MORRISTOWN, NEW JERSEY")
    print("\n" * 11)

    day, leap_year = parse_input()
    calendar(day, leap_year)


if __name__ == "__main__":
    main()

########################################################
#
# Porting notes:
#
# It has been added an input at the beginning of the
# program so the user can specify the first day of the
# week of the year and if the year is leap or not.
#
########################################################