Python/web_programming/get_top_billionaires.py

"""
CAUTION: You may get a json.decoding error.
This works for some of us but fails for others.
"""

from datetime import UTC, date, datetime

import requests
from rich import box
from rich import console as rich_console
from rich import table as rich_table

LIMIT = 10
TODAY = datetime.now(tz=UTC)
API_URL = (
    "https://www.forbes.com/forbesapi/person/rtb/0/position/true.json"
    "?fields=personName,gender,source,countryOfCitizenship,birthDate,finalWorth"
    f"&limit={LIMIT}"
)


def years_old(birth_timestamp: int, today: date | None = None) -> int:
    """
    Calculate the age in years based on the given birth date.  Only the year, month,
    and day are used in the calculation.  The time of day is ignored.

    Args:
        birth_timestamp: The date of birth.
        today: (useful for writing tests) or if None then datetime.date.today().

    Returns:
        int: The age in years.

    Examples:
    >>> today = date(2024, 1, 12)
    >>> years_old(birth_timestamp=datetime(1959, 11, 20).timestamp(), today=today)
    64
    >>> years_old(birth_timestamp=datetime(1970, 2, 13).timestamp(), today=today)
    53
    >>> all(
    ...     years_old(datetime(today.year - i, 1, 12).timestamp(), today=today) == i
    ...     for i in range(1, 111)
    ... )
    True
    """
    today = today or TODAY.date()
    birth_date = datetime.fromtimestamp(birth_timestamp, tz=UTC).date()
    return (today.year - birth_date.year) - (
        (today.month, today.day) < (birth_date.month, birth_date.day)
    )


def get_forbes_real_time_billionaires() -> list[dict[str, int | str]]:
    """
    Get the top 10 real-time billionaires using Forbes API.

    Returns:
        List of top 10 realtime billionaires data.
    """
    response_json = requests.get(API_URL).json()
    return [
        {
            "Name": person["personName"],
            "Source": person["source"],
            "Country": person["countryOfCitizenship"],
            "Gender": person["gender"],
            "Worth ($)": f"{person['finalWorth'] / 1000:.1f} Billion",
            "Age": years_old(person["birthDate"]),
        }
        for person in response_json["personList"]["personsLists"]
    ]


def display_billionaires(forbes_billionaires: list[dict[str, int | str]]) -> None:
    """
    Display Forbes real-time billionaires in a rich table.

    Args:
        forbes_billionaires (list): Forbes top 10 real-time billionaires
    """

    table = rich_table.Table(
        title=f"Forbes Top {LIMIT} Real-Time Billionaires at {TODAY:%Y-%m-%d %H:%M}",
        style="green",
        highlight=True,
        box=box.SQUARE,
    )
    for key in forbes_billionaires[0]:
        table.add_column(key)

    for billionaire in forbes_billionaires:
        table.add_row(*billionaire.values())

    rich_console.Console().print(table)


if __name__ == "__main__":
    display_billionaires(get_forbes_real_time_billionaires())