core/homeassistant/components/acaia/entity.py

47 lines
1.4 KiB
Python

"""Base class for Acaia entities."""
from dataclasses import dataclass
from homeassistant.helpers.device_registry import (
CONNECTION_BLUETOOTH,
DeviceInfo,
format_mac,
)
from homeassistant.helpers.entity import EntityDescription
from homeassistant.helpers.update_coordinator import CoordinatorEntity
from .const import DOMAIN
from .coordinator import AcaiaCoordinator
@dataclass
class AcaiaEntity(CoordinatorEntity[AcaiaCoordinator]):
"""Common elements for all entities."""
_attr_has_entity_name = True
def __init__(
self,
coordinator: AcaiaCoordinator,
entity_description: EntityDescription,
) -> None:
"""Initialize the entity."""
super().__init__(coordinator)
self.entity_description = entity_description
self._scale = coordinator.scale
formatted_mac = format_mac(self._scale.mac)
self._attr_unique_id = f"{formatted_mac}_{entity_description.key}"
self._attr_device_info = DeviceInfo(
identifiers={(DOMAIN, formatted_mac)},
manufacturer="Acaia",
model=self._scale.model,
suggested_area="Kitchen",
connections={(CONNECTION_BLUETOOTH, self._scale.mac)},
)
@property
def available(self) -> bool:
"""Returns whether entity is available."""
return super().available and self._scale.connected