binary_sensor.py

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"""Support for Vallox ventilation unit binary sensors."""
 
from __future__ import annotations
 
from dataclasses import dataclass
 
from homeassistant.components.binary_sensor import (
    BinarySensorEntity,
    BinarySensorEntityDescription,
)
from homeassistant.config_entries import ConfigEntry
from homeassistant.const import EntityCategory
from homeassistant.core import HomeAssistant
from homeassistant.helpers.entity_platform import AddEntitiesCallback
 
from .const import DOMAIN
from .coordinator import ValloxDataUpdateCoordinator
from .entity import ValloxEntity
 
 
class ValloxBinarySensorEntity(ValloxEntity, BinarySensorEntity):
    """Representation of a Vallox binary sensor."""
 
    entity_description: ValloxBinarySensorEntityDescription
    _attr_entity_category = EntityCategory.DIAGNOSTIC
 
    def __init__(
        self,
        name: str,
        coordinator: ValloxDataUpdateCoordinator,
        description: ValloxBinarySensorEntityDescription,
    ) -> None:
        """Initialize the Vallox binary sensor."""
        super().__init__(name, coordinator)
 
        self.entity_descriptionentity_description = description
 
        self._attr_unique_id_attr_unique_id = f"{self._device_uuid}-{description.key}"
 
    @property
    def is_on(self) -> bool | None:
        """Return true if the binary sensor is on."""
        return self.coordinator.data.get(self.entity_descriptionentity_description.metric_key) == 1
 
 
@dataclass(frozen=True, kw_only=True)
class ValloxBinarySensorEntityDescription(BinarySensorEntityDescription):
    """Describes Vallox binary sensor entity."""
 
    metric_key: str
 
 
BINARY_SENSOR_ENTITIES: tuple[ValloxBinarySensorEntityDescription, ...] = (
    ValloxBinarySensorEntityDescription(
        key="post_heater",
        translation_key="post_heater",
        metric_key="A_CYC_IO_HEATER",
    ),
)
 
 
async def async_setup_entry(
    hass: HomeAssistant,
    entry: ConfigEntry,
    async_add_entities: AddEntitiesCallback,
) -> None:
    """Set up the sensors."""
 
    data = hass.data[DOMAIN][entry.entry_id]
 
    async_add_entities(
        ValloxBinarySensorEntity(data["name"], data["coordinator"], description)
        for description in BINARY_SENSOR_ENTITIES
    )