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core/homeassistant/components/egauge/sensor.py
Nic Eggert 2617c4a453 Add eGauge integration (#155279)
Co-authored-by: Claude <noreply@anthropic.com>
2025-12-08 17:33:11 +01:00

100 lines
3.3 KiB
Python

"""Sensor platform for eGauge energy monitors."""
from __future__ import annotations
from collections.abc import Callable
from dataclasses import dataclass
from egauge_async.json.models import RegisterType
from homeassistant.components.sensor import (
SensorDeviceClass,
SensorEntity,
SensorEntityDescription,
SensorStateClass,
)
from homeassistant.const import UnitOfEnergy, UnitOfPower
from homeassistant.core import HomeAssistant
from homeassistant.helpers.entity_platform import AddConfigEntryEntitiesCallback
from .coordinator import EgaugeConfigEntry, EgaugeData, EgaugeDataCoordinator
from .entity import EgaugeEntity
@dataclass(frozen=True, kw_only=True)
class EgaugeSensorEntityDescription(SensorEntityDescription):
"""Extended sensor description for eGauge sensors."""
native_value_fn: Callable[[EgaugeData, str], float]
available_fn: Callable[[EgaugeData, str], bool]
SENSORS: tuple[EgaugeSensorEntityDescription, ...] = (
EgaugeSensorEntityDescription(
key="power",
device_class=SensorDeviceClass.POWER,
state_class=SensorStateClass.MEASUREMENT,
native_unit_of_measurement=UnitOfPower.WATT,
native_value_fn=lambda data, register: data.measurements[register],
available_fn=lambda data, register: register in data.measurements,
),
EgaugeSensorEntityDescription(
key="energy",
device_class=SensorDeviceClass.ENERGY,
state_class=SensorStateClass.TOTAL_INCREASING,
native_unit_of_measurement=UnitOfEnergy.JOULE,
suggested_unit_of_measurement=UnitOfEnergy.KILO_WATT_HOUR,
native_value_fn=lambda data, register: data.counters[register],
available_fn=lambda data, register: register in data.counters,
),
)
async def async_setup_entry(
hass: HomeAssistant,
entry: EgaugeConfigEntry,
async_add_entities: AddConfigEntryEntitiesCallback,
) -> None:
"""Set up eGauge sensor platform."""
coordinator = entry.runtime_data
async_add_entities(
EgaugeSensor(coordinator, register_name, sensor)
for sensor in SENSORS
for register_name, register_info in coordinator.data.register_info.items()
if register_info.type == RegisterType.POWER
)
class EgaugeSensor(EgaugeEntity, SensorEntity):
"""Generic sensor entity using entity description pattern."""
entity_description: EgaugeSensorEntityDescription
def __init__(
self,
coordinator: EgaugeDataCoordinator,
register_name: str,
description: EgaugeSensorEntityDescription,
) -> None:
"""Initialize the sensor."""
super().__init__(coordinator, register_name)
self._register_name = register_name
self.entity_description = description
self._attr_unique_id = (
f"{coordinator.serial_number}_{register_name}_{description.key}"
)
@property
def native_value(self) -> float:
"""Return the sensor value using the description's value function."""
return self.entity_description.native_value_fn(
self.coordinator.data, self._register_name
)
@property
def available(self) -> bool:
"""Return true if the corresponding register is available."""
return super().available and self.entity_description.available_fn(
self.coordinator.data, self._register_name
)