54 lines
1.5 KiB
Python
54 lines
1.5 KiB
Python
"""Battery binary sensor entities."""
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from __future__ import annotations
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from typing import Any
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from py_typecheck import checked_or
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from homeassistant.components.binary_sensor import BinarySensorEntity, BinarySensorEntityDescription
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from homeassistant.helpers.update_coordinator import CoordinatorEntity
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class BatteryBinarySensor( # pyright: ignore[reportIncompatibleVariableOverride]
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CoordinatorEntity, BinarySensorEntity
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):
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"""Represent a low-battery binary sensor.
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Station payload uses:
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- ``0`` => low battery (binary sensor is ``on``)
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- ``1`` => battery OK (binary sensor is ``off``)
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"""
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_attr_has_entity_name = True
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_attr_should_poll = False
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def __init__(
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self,
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coordinator: Any,
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description: BinarySensorEntityDescription,
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) -> None:
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"""Initialize the battery binary sensor."""
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super().__init__(coordinator)
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self.entity_description = description
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self._attr_unique_id = f"{description.key}_battery"
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@property
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def is_on(self) -> bool | None: # pyright: ignore[reportIncompatibleVariableOverride]
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"""Return low-battery state.
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``True`` means low battery for ``BinarySensorDeviceClass.BATTERY``.
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"""
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data = checked_or(self.coordinator.data, dict[str, Any], {})
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raw: Any = data.get(self.entity_description.key)
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if raw is None or raw == "":
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return None
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try:
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value = int(raw)
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except (TypeError, ValueError):
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return None
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return value == 0
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