83 lines
2.1 KiB
Python
83 lines
2.1 KiB
Python
"""
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Definition of an asyncio compatible CalDAV calendar.
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Caches events using `timed_alru_cache`.
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"""
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from datetime import datetime
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from functools import total_ordering
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from logging import getLogger
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from typing import Annotated, Self
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from pydantic import BaseModel, ConfigDict, StringConstraints
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from vobject.base import Component
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_logger = getLogger(__name__)
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type StrippedStr = Annotated[str, StringConstraints(strip_whitespace=True)]
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@total_ordering
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class CalEvent(BaseModel):
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"""
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A CalDAV calendar event.
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Properties are to be named as in the EVENT component of
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RFC5545 (iCalendar).
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https://icalendar.org/iCalendar-RFC-5545/3-6-1-event-component.html
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"""
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model_config = ConfigDict(frozen=True)
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summary: StrippedStr = ""
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description: StrippedStr = ""
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dtstart: datetime = datetime.utcnow()
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dtend: datetime = datetime.utcnow()
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def __lt__(self, other: Self) -> bool:
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"""
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Order Events by start time.
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"""
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return self.dtstart < other.dtstart
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def __eq__(self, other: Self) -> bool:
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"""
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Compare all properties.
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"""
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return self.model_dump() == other.model_dump()
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@classmethod
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def from_vevent(cls, event: Component) -> Self:
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"""
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Create a CalEvent instance from a `VObject.VEvent` object.
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"""
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data = {}
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keys = ("summary", "description", "dtstart", "dtend", "duration")
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for key in keys:
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try:
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data[key] = event.contents[key][0].value # type: ignore
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except KeyError:
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pass
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if "dtend" not in data:
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data["dtend"] = data["dtstart"]
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if "duration" in data:
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try:
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data["dtend"] += data["duration"]
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except (ValueError, TypeError, AttributeError):
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_logger.warn(
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"Could not add duration %s to %s",
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repr(data["duration"]),
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repr(data["dtstart"]),
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)
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del data["duration"]
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return cls.model_validate(data)
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