sensor.py

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"""Support for Volvo On Call sensors."""
 
from __future__ import annotations
 
from volvooncall.dashboard import Instrument
 
from homeassistant.components.sensor import SensorEntity
from homeassistant.config_entries import ConfigEntry
from homeassistant.core import HomeAssistant, callback
from homeassistant.helpers.dispatcher import async_dispatcher_connect
from homeassistant.helpers.entity_platform import AddEntitiesCallback
 
from .const import DOMAIN, VOLVO_DISCOVERY_NEW
from .coordinator import VolvoUpdateCoordinator
from .entity import VolvoEntity
 
 
async def async_setup_entry(
    hass: HomeAssistant,
    config_entry: ConfigEntry,
    async_add_entities: AddEntitiesCallback,
) -> None:
    """Configure sensors from a config entry created in the integrations UI."""
    coordinator: VolvoUpdateCoordinator = hass.data[DOMAIN][config_entry.entry_id]
    volvo_data = coordinator.volvo_data
 
    @callback
    def async_discover_device(instruments: list[Instrument]) -> None:
        """Discover and add a discovered Volvo On Call sensor."""
        async_add_entities(
            VolvoSensor(
                coordinator,
                instrument.vehicle.vin,
                instrument.component,
                instrument.attr,
                instrument.slug_attr,
            )
            for instrument in instruments
            if instrument.component == "sensor"
        )
 
    async_discover_device([*volvo_data.instruments])
 
    config_entry.async_on_unload(
        async_dispatcher_connect(hass, VOLVO_DISCOVERY_NEW, async_discover_device)
    )
 
 
class VolvoSensor(VolvoEntity, SensorEntity):
    """Representation of a Volvo sensor."""
 
    def __init__(
        self,
        coordinator: VolvoUpdateCoordinator,
        vin: str,
        component: str,
        attribute: str,
        slug_attr: str,
    ) -> None:
        """Initialize the sensor."""
        super().__init__(vin, component, attribute, slug_attr, coordinator)
        self._update_value_and_unit_update_value_and_unit()
 
    def _update_value_and_unit(self) -> None:
        self._attr_native_value_attr_native_value = self.instrumentinstrument.state
        self._attr_native_unit_of_measurement_attr_native_unit_of_measurement = self.instrumentinstrument.unit
 
    @callback
    def _handle_coordinator_update(self) -> None:
        """Handle updated data from the coordinator."""
        self._update_value_and_unit_update_value_and_unit()
        self.async_write_ha_stateasync_write_ha_state()