136 lines
4.3 KiB
Python
136 lines
4.3 KiB
Python
"""Allow users to set and activate scenes."""
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from __future__ import annotations
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import functools as ft
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import importlib
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import logging
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from typing import Any, Final, final
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import voluptuous as vol
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from homeassistant.components.light import ATTR_TRANSITION
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from homeassistant.config_entries import ConfigEntry
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from homeassistant.const import CONF_PLATFORM, SERVICE_TURN_ON, STATE_UNAVAILABLE
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from homeassistant.core import DOMAIN as HA_DOMAIN, HomeAssistant
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from homeassistant.helpers.entity_component import EntityComponent
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from homeassistant.helpers.restore_state import RestoreEntity
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from homeassistant.helpers.typing import ConfigType
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from homeassistant.util import dt as dt_util
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DOMAIN: Final = "scene"
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STATES: Final = "states"
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def _hass_domain_validator(config: dict[str, Any]) -> dict[str, Any]:
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"""Validate platform in config for homeassistant domain."""
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if CONF_PLATFORM not in config:
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config = {CONF_PLATFORM: HA_DOMAIN, STATES: config}
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return config
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def _platform_validator(config: dict[str, Any]) -> dict[str, Any]:
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"""Validate it is a valid platform."""
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try:
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platform = importlib.import_module(f".{config[CONF_PLATFORM]}", __name__)
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except ImportError:
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try:
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platform = importlib.import_module(
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f"homeassistant.components.{config[CONF_PLATFORM]}.scene"
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)
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except ImportError:
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raise vol.Invalid("Invalid platform specified") from None
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if not hasattr(platform, "PLATFORM_SCHEMA"):
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return config
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return platform.PLATFORM_SCHEMA(config) # type: ignore[no-any-return]
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PLATFORM_SCHEMA = vol.Schema(
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vol.All(
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_hass_domain_validator,
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vol.Schema({vol.Required(CONF_PLATFORM): str}, extra=vol.ALLOW_EXTRA),
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_platform_validator,
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),
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extra=vol.ALLOW_EXTRA,
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)
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# mypy: disallow-any-generics
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async def async_setup(hass: HomeAssistant, config: ConfigType) -> bool:
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"""Set up the scenes."""
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component = hass.data[DOMAIN] = EntityComponent[Scene](
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logging.getLogger(__name__), DOMAIN, hass
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)
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await component.async_setup(config)
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# Ensure Home Assistant platform always loaded.
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await component.async_setup_platform(HA_DOMAIN, {"platform": HA_DOMAIN, STATES: []})
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component.async_register_entity_service(
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SERVICE_TURN_ON,
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{ATTR_TRANSITION: vol.All(vol.Coerce(float), vol.Clamp(min=0, max=6553))},
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"_async_activate",
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)
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return True
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async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
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"""Set up a config entry."""
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component: EntityComponent[Scene] = hass.data[DOMAIN]
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return await component.async_setup_entry(entry)
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async def async_unload_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
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"""Unload a config entry."""
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component: EntityComponent[Scene] = hass.data[DOMAIN]
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return await component.async_unload_entry(entry)
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class Scene(RestoreEntity):
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"""A scene is a group of entities and the states we want them to be."""
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_attr_should_poll = False
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__last_activated: str | None = None
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@property
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@final
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def state(self) -> str | None:
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"""Return the state of the scene."""
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if self.__last_activated is None:
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return None
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return self.__last_activated
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@final
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async def _async_activate(self, **kwargs: Any) -> None:
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"""Activate scene.
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Should not be overridden, handle setting last press timestamp.
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"""
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self.__last_activated = dt_util.utcnow().isoformat()
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self.async_write_ha_state()
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await self.async_activate(**kwargs)
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async def async_internal_added_to_hass(self) -> None:
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"""Call when the scene is added to hass."""
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await super().async_internal_added_to_hass()
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state = await self.async_get_last_state()
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if (
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state is not None
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and state.state is not None
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and state.state != STATE_UNAVAILABLE
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):
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self.__last_activated = state.state
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def activate(self, **kwargs: Any) -> None:
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"""Activate scene. Try to get entities into requested state."""
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raise NotImplementedError()
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async def async_activate(self, **kwargs: Any) -> None:
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"""Activate scene. Try to get entities into requested state."""
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task = self.hass.async_add_job(ft.partial(self.activate, **kwargs))
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if task:
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await task
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