sensor.py

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"""Support for Solax inverter via local API."""
 
from __future__ import annotations
 
from solax.units import Units
 
from homeassistant.components.sensor import (
    SensorDeviceClass,
    SensorEntity,
    SensorEntityDescription,
    SensorStateClass,
)
from homeassistant.const import (
    PERCENTAGE,
    UnitOfElectricCurrent,
    UnitOfElectricPotential,
    UnitOfEnergy,
    UnitOfFrequency,
    UnitOfPower,
    UnitOfTemperature,
)
from homeassistant.core import HomeAssistant
from homeassistant.helpers.device_registry import DeviceInfo
from homeassistant.helpers.entity_platform import AddEntitiesCallback
from homeassistant.helpers.update_coordinator import CoordinatorEntity
 
from . import SolaxConfigEntry
from .const import DOMAIN, MANUFACTURER
from .coordinator import SolaxDataUpdateCoordinator
 
DEFAULT_PORT = 80
 
 
SENSOR_DESCRIPTIONS: dict[tuple[Units, bool], SensorEntityDescription] = {
    (Units.C, False): SensorEntityDescription(
        key=f"{Units.C}_{False}",
        device_class=SensorDeviceClass.TEMPERATURE,
        native_unit_of_measurement=UnitOfTemperature.CELSIUS,
        state_class=SensorStateClass.MEASUREMENT,
    ),
    (Units.KWH, False): SensorEntityDescription(
        key=f"{Units.KWH}_{False}",
        device_class=SensorDeviceClass.ENERGY,
        native_unit_of_measurement=UnitOfEnergy.KILO_WATT_HOUR,
        state_class=SensorStateClass.MEASUREMENT,
    ),
    (Units.KWH, True): SensorEntityDescription(
        key=f"{Units.KWH}_{True}",
        device_class=SensorDeviceClass.ENERGY,
        native_unit_of_measurement=UnitOfEnergy.KILO_WATT_HOUR,
        state_class=SensorStateClass.TOTAL_INCREASING,
    ),
    (Units.V, False): SensorEntityDescription(
        key=f"{Units.V}_{False}",
        device_class=SensorDeviceClass.VOLTAGE,
        native_unit_of_measurement=UnitOfElectricPotential.VOLT,
        state_class=SensorStateClass.MEASUREMENT,
    ),
    (Units.A, False): SensorEntityDescription(
        key=f"{Units.A}_{False}",
        device_class=SensorDeviceClass.CURRENT,
        native_unit_of_measurement=UnitOfElectricCurrent.AMPERE,
        state_class=SensorStateClass.MEASUREMENT,
    ),
    (Units.W, False): SensorEntityDescription(
        key=f"{Units.W}_{False}",
        device_class=SensorDeviceClass.POWER,
        native_unit_of_measurement=UnitOfPower.WATT,
        state_class=SensorStateClass.MEASUREMENT,
    ),
    (Units.PERCENT, False): SensorEntityDescription(
        key=f"{Units.PERCENT}_{False}",
        device_class=SensorDeviceClass.BATTERY,
        native_unit_of_measurement=PERCENTAGE,
        state_class=SensorStateClass.MEASUREMENT,
    ),
    (Units.HZ, False): SensorEntityDescription(
        key=f"{Units.HZ}_{False}",
        device_class=SensorDeviceClass.FREQUENCY,
        native_unit_of_measurement=UnitOfFrequency.HERTZ,
        state_class=SensorStateClass.MEASUREMENT,
    ),
    (Units.NONE, False): SensorEntityDescription(
        key=f"{Units.NONE}_{False}",
    ),
}
 
 
async def async_setup_entry(
    hass: HomeAssistant,
    entry: SolaxConfigEntry,
    async_add_entities: AddEntitiesCallback,
) -> None:
    """Entry setup."""
    api = entry.runtime_data.api
    coordinator = entry.runtime_data.coordinator
    resp = coordinator.data
    serial = resp.serial_number
    version = resp.version
    entities: list[InverterSensorEntity] = []
    for sensor, (idx, measurement) in api.inverter.sensor_map().items():
        description = SENSOR_DESCRIPTIONS[(measurement.unit, measurement.is_monotonic)]
 
        uid = f"{serial}-{idx}"
        entities.append(
            InverterSensorEntity(
                coordinator,
                api.inverter.manufacturer,
                uid,
                serial,
                version,
                sensor,
                description.native_unit_of_measurement,
                description.state_class,
                description.device_class,
            )
        )
    async_add_entities(entities)
 
 
class InverterSensorEntity(CoordinatorEntity, SensorEntity):
    """Class for a sensor."""
 
    _attr_should_poll = False
 
    def __init__(
        self,
        coordinator: SolaxDataUpdateCoordinator,
        manufacturer: str,
        uid: str,
        serial: str,
        version: str,
        key: str,
        unit: str | None,
        state_class: SensorStateClass | str | None,
        device_class: SensorDeviceClass | None,
    ) -> None:
        """Initialize an inverter sensor."""
        super().__init__(coordinator)
        self._attr_unique_id_attr_unique_id = uid
        self._attr_name_attr_name = f"{manufacturer} {serial} {key}"
        self._attr_native_unit_of_measurement_attr_native_unit_of_measurement = unit
        self._attr_state_class_attr_state_class = state_class
        self._attr_device_class_attr_device_class = device_class
        self._attr_device_info_attr_device_info = DeviceInfo(
            identifiers={(DOMAIN, serial)},
            manufacturer=MANUFACTURER,
            name=f"{manufacturer} {serial}",
            sw_version=version,
        )
        self.keykey = key
 
    @property
    def native_value(self):
        """State of this inverter attribute."""
        return self.coordinator.data.data[self.keykey]