sensor.py

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"""Support for sensors."""
 
from __future__ import annotations
 
from fjaraskupan import Device
 
from homeassistant.components.sensor import (
    SensorDeviceClass,
    SensorEntity,
    SensorStateClass,
)
from homeassistant.config_entries import ConfigEntry
from homeassistant.const import SIGNAL_STRENGTH_DECIBELS_MILLIWATT, EntityCategory
from homeassistant.core import HomeAssistant
from homeassistant.helpers.device_registry import DeviceInfo
from homeassistant.helpers.entity import Entity
from homeassistant.helpers.entity_platform import AddEntitiesCallback
from homeassistant.helpers.typing import StateType
from homeassistant.helpers.update_coordinator import CoordinatorEntity
 
from . import async_setup_entry_platform
from .coordinator import FjaraskupanCoordinator
 
 
async def async_setup_entry(
    hass: HomeAssistant,
    config_entry: ConfigEntry,
    async_add_entities: AddEntitiesCallback,
) -> None:
    """Set up sensors dynamically through discovery."""
 
    def _constructor(coordinator: FjaraskupanCoordinator) -> list[Entity]:
        return [RssiSensor(coordinator, coordinator.device, coordinator.device_info)]
 
    async_setup_entry_platform(hass, config_entry, async_add_entities, _constructor)
 
 
class RssiSensor(CoordinatorEntity[FjaraskupanCoordinator], SensorEntity):
    """Sensor device."""
 
    _attr_has_entity_name = True
    _attr_device_class = SensorDeviceClass.SIGNAL_STRENGTH
    _attr_state_class = SensorStateClass.MEASUREMENT
    _attr_native_unit_of_measurement = SIGNAL_STRENGTH_DECIBELS_MILLIWATT
    _attr_entity_registry_enabled_default = False
    _attr_entity_category = EntityCategory.DIAGNOSTIC
 
    def __init__(
        self,
        coordinator: FjaraskupanCoordinator,
        device: Device,
        device_info: DeviceInfo,
    ) -> None:
        """Init sensor."""
        super().__init__(coordinator)
        self._attr_unique_id_attr_unique_id = f"{device.address}-signal-strength"
        self._attr_device_info_attr_device_info = device_info
 
    @property
    def native_value(self) -> StateType:
        """Return the value reported by the sensor."""
        if data := self.coordinator.data:
            return data.rssi
        return None