Add sensor platform to Alexa Devices (#146469)

* Add sensor platform to Amazon Devices

* fix merge after rename

* fix requirements

* cleanup

* Revert "cleanup"

This reverts commit f34892da8a.

* tests

* move logic in sensor entity description

* update tests

* apply review comment

* apply review comments

homeassistant/components/alexa_devices/sensor.py

@@ -0,0 +1,88 @@
+"""Support for sensors."""
+
+from __future__ import annotations
+
+from collections.abc import Callable
+from dataclasses import dataclass
+from typing import Final
+
+from aioamazondevices.api import AmazonDevice
+
+from homeassistant.components.sensor import (
+    SensorDeviceClass,
+    SensorEntity,
+    SensorEntityDescription,
+)
+from homeassistant.const import LIGHT_LUX, UnitOfTemperature
+from homeassistant.core import HomeAssistant
+from homeassistant.helpers.entity_platform import AddConfigEntryEntitiesCallback
+from homeassistant.helpers.typing import StateType
+
+from .coordinator import AmazonConfigEntry
+from .entity import AmazonEntity
+
+# Coordinator is used to centralize the data updates
+PARALLEL_UPDATES = 0
+
+
+@dataclass(frozen=True, kw_only=True)
+class AmazonSensorEntityDescription(SensorEntityDescription):
+    """Amazon Devices sensor entity description."""
+
+    native_unit_of_measurement_fn: Callable[[AmazonDevice, str], str] | None = None
+
+
+SENSORS: Final = (
+    AmazonSensorEntityDescription(
+        key="temperature",
+        device_class=SensorDeviceClass.TEMPERATURE,
+        native_unit_of_measurement_fn=lambda device, _key: (
+            UnitOfTemperature.CELSIUS
+            if device.sensors[_key].scale == "CELSIUS"
+            else UnitOfTemperature.FAHRENHEIT
+        ),
+    ),
+    AmazonSensorEntityDescription(
+        key="illuminance",
+        device_class=SensorDeviceClass.ILLUMINANCE,
+        native_unit_of_measurement=LIGHT_LUX,
+    ),
+)
+
+
+async def async_setup_entry(
+    hass: HomeAssistant,
+    entry: AmazonConfigEntry,
+    async_add_entities: AddConfigEntryEntitiesCallback,
+) -> None:
+    """Set up Amazon Devices sensors based on a config entry."""
+
+    coordinator = entry.runtime_data
+
+    async_add_entities(
+        AmazonSensorEntity(coordinator, serial_num, sensor_desc)
+        for sensor_desc in SENSORS
+        for serial_num in coordinator.data
+        if coordinator.data[serial_num].sensors.get(sensor_desc.key) is not None
+    )
+
+
+class AmazonSensorEntity(AmazonEntity, SensorEntity):
+    """Sensor device."""
+
+    entity_description: AmazonSensorEntityDescription
+
+    @property
+    def native_unit_of_measurement(self) -> str | None:
+        """Return the unit of measurement of the sensor."""
+        if self.entity_description.native_unit_of_measurement_fn:
+            return self.entity_description.native_unit_of_measurement_fn(
+                self.device, self.entity_description.key
+            )
+
+        return super().native_unit_of_measurement
+
+    @property
+    def native_value(self) -> StateType:
+        """Return the state of the sensor."""
+        return self.device.sensors[self.entity_description.key].value