c56f99baaf
* Async migration device_tracker * change location stuff to async * address paulus comments * fix lint & add async discovery listener * address paulus comments v2 * fix tests * fix test_mqtt * fix test_init * fix gps_acc * fix lint * change async_update_stale to callback
36 lines
1,016 B
Python
36 lines
1,016 B
Python
"""Location helpers for Home Assistant."""
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from typing import Sequence
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from homeassistant.const import ATTR_LATITUDE, ATTR_LONGITUDE
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from homeassistant.core import State
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from homeassistant.util import location as loc_util
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def has_location(state: State) -> bool:
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"""Test if state contains a valid location.
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Async friendly.
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"""
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return (isinstance(state, State) and
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isinstance(state.attributes.get(ATTR_LATITUDE), float) and
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isinstance(state.attributes.get(ATTR_LONGITUDE), float))
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def closest(latitude: float, longitude: float,
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states: Sequence[State]) -> State:
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"""Return closest state to point.
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Async friendly.
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"""
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with_location = [state for state in states if has_location(state)]
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if not with_location:
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return None
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return min(
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with_location,
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key=lambda state: loc_util.distance(
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latitude, longitude, state.attributes.get(ATTR_LATITUDE),
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state.attributes.get(ATTR_LONGITUDE))
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)
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