50 lines
1.5 KiB
Python
50 lines
1.5 KiB
Python
"""Birthdays."""
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from datetime import date
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import yaml
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from .event import Event
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YEAR_NOT_KNOWN = 1900
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def next_birthday(from_date: date, birth_date: date) -> tuple[date, int | None]:
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"""Calculate the date of the next birthday based on a given birth date."""
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next_birthday_date = birth_date.replace(year=from_date.year)
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if from_date > next_birthday_date:
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next_birthday_date = birth_date.replace(year=from_date.year + 1)
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if birth_date.year != YEAR_NOT_KNOWN:
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age_at_next_birthday = next_birthday_date.year - birth_date.year
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else:
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age_at_next_birthday = None
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return next_birthday_date, age_at_next_birthday
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def get_birthdays(from_date: date, filepath: str) -> list[Event]:
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"""Get birthdays from config."""
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events = []
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with open(filepath) as f:
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entities = yaml.safe_load(f)
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for entity in entities:
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if "year" in entity["birthday"]:
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birthday = date(**entity["birthday"])
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else:
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birthday = date(year=YEAR_NOT_KNOWN, **entity["birthday"])
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bday, age = next_birthday(from_date, birthday)
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for offset in range(2):
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display_age = f"aged {age + offset}" if age is not None else "age unknown"
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events.append(
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Event(
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date=bday.replace(year=bday.year + offset),
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name="birthday",
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title=f'{entity["label"]} ({display_age})',
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)
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)
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return events
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