work_time.py

from collections.abc import Iterator, Sequence
from datetime import date, timedelta
from functools import partial
from itertools import batched

work_time = timedelta(hours=7, minutes=15)

year = 2025

(
    january_2025,
    february_2025,
    march_2025,
    april_2025,
    may_2025,
    june_2025,
    july_2025,
    august_2025,
    september_2025,
    october_2025,
    november_2025,
    december_2025,
) = map(partial(partial, date, year), range(1, 13))

december_2024 = partial(date, 2024, 12)

started_at = december_2024(16)

free_days = [
    december_2024(25),  # First day of Christmas
    december_2024(26),  # Second day of Christmas
    december_2024(30),  # Paid leave
    december_2024(31),  # New Year's Eve (paid leave)
    january_2025(1),  # New Year's Day
    january_2025(6),  # Epiphany
    january_2025(16),  # Unpaid leave
    january_2025(17),  # Unpaid leave
    january_2025(22),  # Paid leave
    january_2025(23),  # Paid leave
    january_2025(31),  # Paid leave
    february_2025(3),  # Paid leave
]


def period(start_date: date, end_date: date | None = None) -> Iterator[date]:
    return map(
        date.fromordinal,
        range(
            start_date.toordinal(),
            (end_date or date.today() - timedelta(days=1)).toordinal() + 1,
        ),
    )


def get_work_days(
    start_date: date, *, end_date: date | None = None, free_days: Sequence[date]
) -> list[date]:
    return [
        date
        for date in period(start_date, end_date)
        if not date.weekday() in (5, 6) and date not in free_days
    ]


print("Work time:", work_time)
print("\nWork days:")

for rows in batched(enumerate(get_work_days(started_at, free_days=free_days), start=1), 7):
    for total, day in rows:
        print(day, end=" ")
    print()

print(f"\nTotal of {total} work days.")

total_work_time = work_time * len(get_work_days(started_at, free_days=free_days))


def repr_timedelta(td: timedelta) -> str:
    return f"{td.days * 24 + td.seconds // 3600}h {td.seconds % 3600 // 60}m"


print(f"Total work time: {repr_timedelta(total_work_time)}.")

pasted_from_toggl = "301:05:51"
work_time_kwargs = dict(
    zip(
        ("hours", "minutes", "seconds"),
        map(int, pasted_from_toggl.split(":")),
    )
)
actual_work_time = timedelta(**work_time_kwargs)

print(f"Actual work time: {repr_timedelta(actual_work_time)}.")

type_of_difference = "overtime" if actual_work_time > total_work_time else "undertime"

print(f"Difference: {repr_timedelta(total_work_time - actual_work_time)} {type_of_difference}.")