"""Functions used in preparing Guido's gorgeous lasagna.

Learn about Guido, the creator of the Python language:
https://en.wikipedia.org/wiki/Guido_van_Rossum

This is a module docstring, used to describe the functionality
of a module and its functions and/or classes.
"""

# TODO: define the 'EXPECTED_BAKE_TIME' constant below.
EXPECTED_BAKE_TIME = 40
PREPARATION_TIME = 2

# TODO: Remove 'pass' and complete the 'bake_time_remaining()' function below.


def bake_time_remaining(elapsed_bake_time: int) -> int:
    """Calculate the bake time remaining.

    :param elapsed_bake_time: int - baking time already elapsed.
    :return: int - remaining bake time (in minutes) derived from 'EXPECTED_BAKE_TIME'.

    Function that takes the actual minutes the lasagna has been in the oven as
    an argument and returns how many minutes the lasagna still needs to bake
    based on the `EXPECTED_BAKE_TIME`.
    """
    return EXPECTED_BAKE_TIME - elapsed_bake_time


# TODO: Define the 'preparation_time_in_minutes()' function below.
# You might also consider defining a 'PREPARATION_TIME' constant.
# You can do that on the line below the 'EXPECTED_BAKE_TIME' constant.
# This will make it easier to do calculations.
def preparation_time_in_minutes(number_of_layers: int) -> int:
    """Calculate how long will take in minutes to prepare a lasagna with
    number_of_layers

    :param number_of_layers: int - number of layers in the lasagna
    :return int - time to make (in minutes) a lasagna with number_of_layers

    Function that takes the number_of_layers you want to add to the lasagna as
    an argument and returns how many minutes you would spend making them.
    Assume each layer takes 2 minutes to prepare.
    """
    return number_of_layers * PREPARATION_TIME


# TODO: define the 'elapsed_time_in_minutes()' function below.
def elapsed_time_in_minutes(number_of_layers: int, elapsed_bake_time: int) -> int:
    """Calculate the total number of minutes you have been cooking (or the sum
    of your preparation time and the time the lasagna has already spent baking
    in the oven).

    :param number_of_layers: int - the number of layers added to the lasagna
    :param elapsed_bake_time: int - the number of minutes the lasagna has been baking in the oven
    :return: int - total number of minutes you have been cooking

    Function that takes two parameters as arguments: number_of_layers (you want
    to add to the lasagna) and elapsed_bake_time (number of minutes the lasagna
    has been baking in the oven). This function returns the total number of
    minutes you have been cooking
    """
    return preparation_time_in_minutes(number_of_layers) + elapsed_bake_time


# TODO: Remember to go back and add docstrings to all your functions
#  (you can copy and then alter the one from bake_time_remaining.)