65 lines
1.5 KiB
Python
65 lines
1.5 KiB
Python
"""Models for Recorder."""
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from __future__ import annotations
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from datetime import datetime
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import logging
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from typing import overload
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import homeassistant.util.dt as dt_util
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_LOGGER = logging.getLogger(__name__)
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DB_TIMEZONE = "+00:00"
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EMPTY_JSON_OBJECT = "{}"
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@overload
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def process_timestamp(ts: None) -> None: ...
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@overload
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def process_timestamp(ts: datetime) -> datetime: ...
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def process_timestamp(ts: datetime | None) -> datetime | None:
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"""Process a timestamp into datetime object."""
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if ts is None:
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return None
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if ts.tzinfo is None:
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return ts.replace(tzinfo=dt_util.UTC)
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return dt_util.as_utc(ts)
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@overload
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def process_timestamp_to_utc_isoformat(ts: None) -> None: ...
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@overload
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def process_timestamp_to_utc_isoformat(ts: datetime) -> str: ...
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def process_timestamp_to_utc_isoformat(ts: datetime | None) -> str | None:
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"""Process a timestamp into UTC isotime."""
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if ts is None:
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return None
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if ts.tzinfo == dt_util.UTC:
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return ts.isoformat()
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if ts.tzinfo is None:
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return f"{ts.isoformat()}{DB_TIMEZONE}"
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return ts.astimezone(dt_util.UTC).isoformat()
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def datetime_to_timestamp_or_none(dt: datetime | None) -> float | None:
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"""Convert a datetime to a timestamp."""
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return None if dt is None else dt.timestamp()
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def timestamp_to_datetime_or_none(ts: float | None) -> datetime | None:
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"""Convert a timestamp to a datetime."""
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if not ts:
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return None
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return dt_util.utc_from_timestamp(ts)
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