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HomeAssistantVS/custom_components/midea_ac_lan/midea_entity.py
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8.3 KiB
Python

"""Base entity for Midea Lan."""
import logging
from typing import Any, cast
from homeassistant.const import MAJOR_VERSION, MINOR_VERSION
from homeassistant.core import callback
if (MAJOR_VERSION, MINOR_VERSION) >= (2023, 9):
from homeassistant.helpers.device_registry import DeviceInfo
else:
from homeassistant.helpers.entity import ( # type: ignore[attr-defined]
DeviceInfo,
)
from homeassistant.helpers.device_registry import CONNECTION_NETWORK_MAC, format_mac
from homeassistant.helpers.entity import Entity
from midealocal.device import MideaDevice
from .const import DOMAIN
from .midea_devices import MIDEA_DEVICES
_LOGGER = logging.getLogger(__name__)
class MideaEntity(Entity):
"""Base Midea entity."""
def __init__(self, device: MideaDevice, entity_key: str) -> None:
"""Initialize Midea base entity."""
self._device = device
self._config = cast(
"dict",
MIDEA_DEVICES[self._device.device_type]["entities"],
)[entity_key]
self._entity_key = entity_key
self._unique_id = f"{DOMAIN}.{self._device.device_id}_{entity_key}"
# Build entity_id with the correct platform domain (sensor.*, switch.*, …)
# instead of the integration domain. Keeps the legacy "<device_id>_<key>"
# object_id so existing entity_ids are unchanged, while fixing the HA
# wrong-domain deprecation (breaks in HA 2027.5.0).
ha_domain = self._config["type"]
self.entity_id = f"{ha_domain}.{self._device.device_id}_{entity_key}"
self._device_name = self._device.name
# HA language setting:
# 1. hass.config.language: Settings / System / General settings
# 2. user language setting in user profile setting
# Entity name translation based on hass.config.language
# add language in /config/configuration.yaml will disable web UI setting
# homeassistant:
# language: zh-Hans # ruff:ignore[commented-out-code]
# Translating the name and attributes of entities:
# https://developers.home-assistant.io/blog/2023/03/27/entity_name_translations/#translating-entity-name
# https://developers.home-assistant.io/docs/internationalization/core
# translation_key: if defined, Home Assistant will try to find a
# translation in translations/<lang>.json.
# If translation exists -> UI shows the translated string.
# If translation not found -> fallback to "name" / device_class / entity_id.
self._attr_translation_key = self._config.get("translation_key")
# has_entity_name: MUST be True in modern HA (old False behavior is deprecated).
self._attr_has_entity_name = True
# Step 1: translation_key is defined
# - If translation is found in the current language:
# -> UI displays the translated string.
if self._attr_translation_key is not None:
# skip set attr_name and use translation_key
pass
# set attr_name to None will only show device name without translaion_key
# Step 2: No translation_key
# but english "name" is explicitly set in config:
# -> UI displays this name directly (highest priority).
elif self._config.get("name") is not None:
self._attr_name = self._config["name"]
# Step 3: No translation_key, no name,
# fallback to device_class default label.
# Example: device_class = temperature -> "Temperature".
elif "device_class" in self._config:
self._attr_name = None # Let HA generate from device_class
# Step 4: Nothing available,
else:
self._attr_name = (
f"{self._device_name} {self._config.get('name')}"
if "name" in self._config
else f"{self._device_name}"
)
@property
def device(self) -> MideaDevice:
"""Underlying Midea device instance."""
return self._device
@property
def device_info(self) -> DeviceInfo:
"""Device registry info for the entity."""
info: DeviceInfo = {
"manufacturer": "Midea",
"model": f"{MIDEA_DEVICES[self._device.device_type]['name']} "
f"{self._device.model}"
f" ({self._device.subtype})",
"identifiers": {(DOMAIN, str(self._device.device_id))},
"name": self._device_name,
}
if self._device.mac:
info["connections"] = {
(CONNECTION_NETWORK_MAC, format_mac(self._device.mac)),
}
if self._device.serial_number:
info["serial_number"] = self._device.serial_number
return info
@property
def unique_id(self) -> str:
"""Unique id of the entity."""
return self._unique_id
@property
def should_poll(self) -> bool:
"""Whether the integration should poll for updates."""
return False
@property
def available(self) -> bool:
"""Whether the entity is available."""
return bool(self._device.available)
@property
def icon(self) -> str:
"""Icon for the entity."""
return cast("str", self._config.get("icon"))
async def async_added_to_hass(self) -> None:
"""Subscribe to device updates once the entity is added to HA.
Registering the callback here (rather than in ``__init__``) ensures an
entity that is constructed but never added to HA never receives updates,
which avoids the recurring "HASS is None" warnings.
"""
await super().async_added_to_hass()
self._device.register_update(self.update_state)
async def async_will_remove_from_hass(self) -> None:
"""Unsubscribe from device updates when the entity is removed from HA."""
await super().async_will_remove_from_hass()
self._device.unregister_update(self.update_state)
@callback
def schedule_update_if_running(self) -> None:
"""Schedule a state write unless HA is shutting down.
Shared by the base ``update_state`` and by the per-device-type
subclasses that override it (climate, fan, light, water_heater,
humidifier), so the shutdown guard lives in exactly one place and the
main control entities are protected too (issues #798 and #809).
The caller is responsible for the ``self.hass is None`` guard.
Raises:
RuntimeError: If ``schedule_update_ha_state()`` fails for a reason
other than the event loop being closed during shutdown.
"""
if self.hass.is_stopping:
_LOGGER.debug(
"MideaEntity update_state for %s [%s]: HASS is stopping",
self.name,
type(self),
)
return
# A device background thread can still deliver an update after the HA
# event loop has been closed during shutdown. Scheduling a state write
# then raises RuntimeError because the loop is already closed (issues
# #798 and #809). The is_stopping guard above covers the common case,
# but a race remains between that check and the schedule call, so also
# guard against the closed loop and swallow the residual RuntimeError.
if self.hass.loop.is_closed():
return
try:
self.schedule_update_ha_state()
except RuntimeError:
# Only swallow the shutdown race; re-raise any unrelated RuntimeError.
if not self.hass.loop.is_closed():
raise
_LOGGER.debug(
"Ignoring update for %s: event loop closed during shutdown",
self.name,
)
@callback
def update_state(self, status: Any) -> None: # ruff:ignore[any-type]
"""Update entity state."""
if not self.hass:
# Defensive guard for the is_stopping access below. Since the update
# callback is now registered in async_added_to_hass (#869), hass is
# always set on the normal path, so this is debug (like is_stopping).
_LOGGER.debug(
"MideaEntity update_state for %s [%s] with status %s: HASS is None",
self.name,
type(self),
status,
)
return
if self._entity_key not in status and "available" not in status:
return
self.schedule_update_if_running()