"""This platform allows several lights to be grouped into one light.""" import asyncio from collections import Counter import itertools import logging from typing import Any, Callable, Iterator, List, Optional, Tuple, cast import voluptuous as vol from homeassistant.components import light from homeassistant.const import ( ATTR_ENTITY_ID, ATTR_SUPPORTED_FEATURES, CONF_ENTITIES, CONF_NAME, STATE_ON, STATE_UNAVAILABLE, ) from homeassistant.core import State, callback import homeassistant.helpers.config_validation as cv from homeassistant.helpers.event import async_track_state_change from homeassistant.helpers.typing import ConfigType, HomeAssistantType from homeassistant.util import color as color_util from homeassistant.components.light import ( ATTR_BRIGHTNESS, ATTR_COLOR_TEMP, ATTR_EFFECT, ATTR_EFFECT_LIST, ATTR_FLASH, ATTR_HS_COLOR, ATTR_MAX_MIREDS, ATTR_MIN_MIREDS, ATTR_TRANSITION, ATTR_WHITE_VALUE, PLATFORM_SCHEMA, SUPPORT_BRIGHTNESS, SUPPORT_COLOR, SUPPORT_COLOR_TEMP, SUPPORT_EFFECT, SUPPORT_FLASH, SUPPORT_TRANSITION, SUPPORT_WHITE_VALUE, ) # mypy: allow-incomplete-defs, allow-untyped-calls, allow-untyped-defs _LOGGER = logging.getLogger(__name__) DEFAULT_NAME = "Light Group" PLATFORM_SCHEMA = PLATFORM_SCHEMA.extend( { vol.Optional(CONF_NAME, default=DEFAULT_NAME): cv.string, vol.Required(CONF_ENTITIES): cv.entities_domain(light.DOMAIN), } ) SUPPORT_GROUP_LIGHT = ( SUPPORT_BRIGHTNESS | SUPPORT_COLOR_TEMP | SUPPORT_EFFECT | SUPPORT_FLASH | SUPPORT_COLOR | SUPPORT_TRANSITION | SUPPORT_WHITE_VALUE ) async def async_setup_platform( hass: HomeAssistantType, config: ConfigType, async_add_entities, discovery_info=None ) -> None: """Initialize light.group platform.""" async_add_entities( [LightGroup(cast(str, config.get(CONF_NAME)), config[CONF_ENTITIES])] ) class LightGroup(light.Light): """Representation of a light group.""" def __init__(self, name: str, entity_ids: List[str]) -> None: """Initialize a light group.""" self._name = name self._entity_ids = entity_ids self._is_on = False self._available = False self._brightness: Optional[int] = None self._hs_color: Optional[Tuple[float, float]] = None self._color_temp: Optional[int] = None self._min_mireds: Optional[int] = 154 self._max_mireds: Optional[int] = 500 self._white_value: Optional[int] = None self._effect_list: Optional[List[str]] = None self._effect: Optional[str] = None self._supported_features: int = 0 self._async_unsub_state_changed = None async def async_added_to_hass(self) -> None: """Register callbacks.""" @callback def async_state_changed_listener( entity_id: str, old_state: State, new_state: State ): """Handle child updates.""" self.async_schedule_update_ha_state(True) self._async_unsub_state_changed = async_track_state_change( self.hass, self._entity_ids, async_state_changed_listener ) await self.async_update() async def async_will_remove_from_hass(self): """Handle removal from HASS.""" if self._async_unsub_state_changed is not None: self._async_unsub_state_changed() self._async_unsub_state_changed = None @property def name(self) -> str: """Return the name of the entity.""" return self._name @property def is_on(self) -> bool: """Return the on/off state of the light group.""" return self._is_on @property def available(self) -> bool: """Return whether the light group is available.""" return self._available @property def brightness(self) -> Optional[int]: """Return the brightness of this light group between 0..255.""" return self._brightness @property def hs_color(self) -> Optional[Tuple[float, float]]: """Return the HS color value [float, float].""" return self._hs_color @property def color_temp(self) -> Optional[int]: """Return the CT color value in mireds.""" return self._color_temp @property def min_mireds(self) -> Optional[int]: """Return the coldest color_temp that this light group supports.""" return self._min_mireds @property def max_mireds(self) -> Optional[int]: """Return the warmest color_temp that this light group supports.""" return self._max_mireds @property def white_value(self) -> Optional[int]: """Return the white value of this light group between 0..255.""" return self._white_value @property def effect_list(self) -> Optional[List[str]]: """Return the list of supported effects.""" return self._effect_list @property def effect(self) -> Optional[str]: """Return the current effect.""" return self._effect @property def supported_features(self) -> int: """Flag supported features.""" return self._supported_features @property def should_poll(self) -> bool: """No polling needed for a light group.""" return False async def async_turn_on(self, **kwargs): """Forward the turn_on command to all lights in the light group.""" data = {ATTR_ENTITY_ID: self._entity_ids} emulate_color_temp_entity_ids = [] if ATTR_BRIGHTNESS in kwargs: data[ATTR_BRIGHTNESS] = kwargs[ATTR_BRIGHTNESS] if ATTR_HS_COLOR in kwargs: data[ATTR_HS_COLOR] = kwargs[ATTR_HS_COLOR] if ATTR_COLOR_TEMP in kwargs: data[ATTR_COLOR_TEMP] = kwargs[ATTR_COLOR_TEMP] # Create a new entity list to mutate updated_entities = list(self._entity_ids) # Walk through initial entity ids, split entity lists by support for entity_id in self._entity_ids: state = self.hass.states.get(entity_id) if not state: continue support = state.attributes.get(ATTR_SUPPORTED_FEATURES) # Only pass color temperature to supported entity_ids if bool(support & SUPPORT_COLOR) and not bool( support & SUPPORT_COLOR_TEMP ): emulate_color_temp_entity_ids.append(entity_id) updated_entities.remove(entity_id) data[ATTR_ENTITY_ID] = updated_entities if ATTR_WHITE_VALUE in kwargs: data[ATTR_WHITE_VALUE] = kwargs[ATTR_WHITE_VALUE] if ATTR_EFFECT in kwargs: data[ATTR_EFFECT] = kwargs[ATTR_EFFECT] if ATTR_TRANSITION in kwargs: data[ATTR_TRANSITION] = kwargs[ATTR_TRANSITION] if ATTR_FLASH in kwargs: data[ATTR_FLASH] = kwargs[ATTR_FLASH] if not emulate_color_temp_entity_ids: await self.hass.services.async_call( light.DOMAIN, light.SERVICE_TURN_ON, data, blocking=True ) return emulate_color_temp_data = data.copy() temp_k = color_util.color_temperature_mired_to_kelvin( emulate_color_temp_data[ATTR_COLOR_TEMP] ) hs_color = color_util.color_temperature_to_hs(temp_k) emulate_color_temp_data[ATTR_HS_COLOR] = hs_color del emulate_color_temp_data[ATTR_COLOR_TEMP] emulate_color_temp_data[ATTR_ENTITY_ID] = emulate_color_temp_entity_ids await asyncio.gather( self.hass.services.async_call( light.DOMAIN, light.SERVICE_TURN_ON, data, blocking=True ), self.hass.services.async_call( light.DOMAIN, light.SERVICE_TURN_ON, emulate_color_temp_data, blocking=True, ), ) async def async_turn_off(self, **kwargs): """Forward the turn_off command to all lights in the light group.""" data = {ATTR_ENTITY_ID: self._entity_ids} if ATTR_TRANSITION in kwargs: data[ATTR_TRANSITION] = kwargs[ATTR_TRANSITION] await self.hass.services.async_call( light.DOMAIN, light.SERVICE_TURN_OFF, data, blocking=True ) async def async_update(self): """Query all members and determine the light group state.""" all_states = [self.hass.states.get(x) for x in self._entity_ids] states: List[State] = list(filter(None, all_states)) on_states = [state for state in states if state.state == STATE_ON] self._is_on = len(on_states) > 0 self._available = any(state.state != STATE_UNAVAILABLE for state in states) self._brightness = _reduce_attribute(on_states, ATTR_BRIGHTNESS) self._hs_color = _reduce_attribute(on_states, ATTR_HS_COLOR, reduce=_mean_tuple) self._white_value = _reduce_attribute(on_states, ATTR_WHITE_VALUE) self._color_temp = _reduce_attribute(on_states, ATTR_COLOR_TEMP) self._min_mireds = _reduce_attribute( states, ATTR_MIN_MIREDS, default=154, reduce=min ) self._max_mireds = _reduce_attribute( states, ATTR_MAX_MIREDS, default=500, reduce=max ) self._effect_list = None all_effect_lists = list(_find_state_attributes(states, ATTR_EFFECT_LIST)) if all_effect_lists: # Merge all effects from all effect_lists with a union merge. self._effect_list = list(set().union(*all_effect_lists)) self._effect = None all_effects = list(_find_state_attributes(on_states, ATTR_EFFECT)) if all_effects: # Report the most common effect. effects_count = Counter(itertools.chain(all_effects)) self._effect = effects_count.most_common(1)[0][0] self._supported_features = 0 for support in _find_state_attributes(states, ATTR_SUPPORTED_FEATURES): # Merge supported features by emulating support for every feature # we find. self._supported_features |= support # Bitwise-and the supported features with the GroupedLight's features # so that we don't break in the future when a new feature is added. self._supported_features &= SUPPORT_GROUP_LIGHT def _find_state_attributes(states: List[State], key: str) -> Iterator[Any]: """Find attributes with matching key from states.""" for state in states: value = state.attributes.get(key) if value is not None: yield value def _mean_int(*args): """Return the mean of the supplied values.""" return int(sum(args) / len(args)) def _mean_tuple(*args): """Return the mean values along the columns of the supplied values.""" return tuple(sum(l) / len(l) for l in zip(*args)) def _reduce_attribute( states: List[State], key: str, default: Optional[Any] = None, reduce: Callable[..., Any] = _mean_int, ) -> Any: """Find the first attribute matching key from states. If none are found, return default. """ attrs = list(_find_state_attributes(states, key)) if not attrs: return default if len(attrs) == 1: return attrs[0] return reduce(*attrs)