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100 lines
3.4 KiB
Python
100 lines
3.4 KiB
Python
"""Support for Velbus devices."""
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from __future__ import annotations
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from collections.abc import Awaitable, Callable, Coroutine
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from functools import wraps
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from typing import Any, Concatenate
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from velbusaio.channels import Channel as VelbusChannel
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from velbusaio.properties import Property as VelbusProperty
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from homeassistant.exceptions import HomeAssistantError
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from homeassistant.helpers.device_registry import DeviceInfo
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from homeassistant.helpers.entity import Entity
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from .const import DOMAIN
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# device identifiers for modules
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# (DOMAIN, module_address)
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# device identifiers for channels that are subdevices of a module
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# (DOMAIN, f"{module_address}-{channel_number}")
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class VelbusEntity(Entity):
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"""Representation of a Velbus entity."""
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_attr_has_entity_name = True
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_attr_should_poll: bool = False
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def __init__(self, channel: VelbusChannel | VelbusProperty) -> None:
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"""Initialize a Velbus entity."""
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self._channel = channel
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self._module_address = str(channel.get_module_address())
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self._attr_name = channel.get_name()
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self._attr_device_info = DeviceInfo(
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identifiers={
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(DOMAIN, self._get_identifier()),
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},
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manufacturer="Velleman",
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model=channel.get_module_type_name(),
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model_id=str(channel.get_module_type()),
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name=channel.get_full_name(),
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sw_version=channel.get_module_sw_version(),
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serial_number=channel.get_module_serial(),
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)
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if self._channel.is_sub_device():
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self._attr_device_info["via_device"] = (
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DOMAIN,
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self._module_address,
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)
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serial = channel.get_module_serial() or self._module_address
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self._attr_unique_id = f"{serial}-{channel.get_channel_number()}"
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def _get_identifier(self) -> str:
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"""Return the identifier of the entity."""
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if not self._channel.is_sub_device():
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return self._module_address
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return f"{self._module_address}-{self._channel.get_channel_number()}"
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async def async_added_to_hass(self) -> None:
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"""Add listener for state changes."""
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self._channel.on_status_update(self._on_update)
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async def async_will_remove_from_hass(self) -> None:
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"""Remove listener for state changes."""
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self._channel.remove_on_status_update(self._on_update)
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async def _on_update(self) -> None:
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"""Handle status updates from the channel."""
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self.async_write_ha_state()
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@property
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def available(self) -> bool:
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"""Return if entity is available."""
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return self._channel.is_connected()
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def api_call[_T: VelbusEntity, **_P](
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func: Callable[Concatenate[_T, _P], Awaitable[None]],
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) -> Callable[Concatenate[_T, _P], Coroutine[Any, Any, None]]:
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"""Catch command exceptions."""
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@wraps(func)
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async def cmd_wrapper(self: _T, *args: _P.args, **kwargs: _P.kwargs) -> None:
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"""Wrap all command methods."""
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try:
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await func(self, *args, **kwargs)
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except OSError as exc:
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entity_name = self.name if isinstance(self.name, str) else "Unknown"
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raise HomeAssistantError(
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translation_domain=DOMAIN,
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translation_key="api_call_failed",
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translation_placeholders={
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"entity": entity_name,
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},
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) from exc
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return cmd_wrapper
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