core/homeassistant/components/isy994/light.py

94 lines
2.9 KiB
Python

"""Support for ISY994 lights."""
from typing import Callable
from homeassistant.components.light import (
DOMAIN as LIGHT,
SUPPORT_BRIGHTNESS,
LightEntity,
)
from homeassistant.helpers.restore_state import RestoreEntity
from homeassistant.helpers.typing import ConfigType
from . import ISY994_NODES
from .const import _LOGGER
from .entity import ISYNodeEntity
ATTR_LAST_BRIGHTNESS = "last_brightness"
def setup_platform(
hass, config: ConfigType, add_entities: Callable[[list], None], discovery_info=None
):
"""Set up the ISY994 light platform."""
devices = []
for node in hass.data[ISY994_NODES][LIGHT]:
devices.append(ISYLightEntity(node))
add_entities(devices)
class ISYLightEntity(ISYNodeEntity, LightEntity, RestoreEntity):
"""Representation of an ISY994 light device."""
def __init__(self, node) -> None:
"""Initialize the ISY994 light device."""
super().__init__(node)
self._last_brightness = None
@property
def is_on(self) -> bool:
"""Get whether the ISY994 light is on."""
if self.is_unknown():
return False
return self.value != 0
@property
def brightness(self) -> float:
"""Get the brightness of the ISY994 light."""
return None if self.is_unknown() else self.value
def turn_off(self, **kwargs) -> None:
"""Send the turn off command to the ISY994 light device."""
self._last_brightness = self.brightness
if not self._node.off():
_LOGGER.debug("Unable to turn off light")
def on_update(self, event: object) -> None:
"""Save brightness in the update event from the ISY994 Node."""
if not self.is_unknown() and self.value != 0:
self._last_brightness = self.value
super().on_update(event)
# pylint: disable=arguments-differ
def turn_on(self, brightness=None, **kwargs) -> None:
"""Send the turn on command to the ISY994 light device."""
if brightness is None and self._last_brightness:
brightness = self._last_brightness
if not self._node.on(val=brightness):
_LOGGER.debug("Unable to turn on light")
@property
def supported_features(self):
"""Flag supported features."""
return SUPPORT_BRIGHTNESS
@property
def device_state_attributes(self):
"""Return the light attributes."""
return {ATTR_LAST_BRIGHTNESS: self._last_brightness}
async def async_added_to_hass(self) -> None:
"""Restore last_brightness on restart."""
await super().async_added_to_hass()
self._last_brightness = self.brightness or 255
last_state = await self.async_get_last_state()
if not last_state:
return
if (
ATTR_LAST_BRIGHTNESS in last_state.attributes
and last_state.attributes[ATTR_LAST_BRIGHTNESS]
):
self._last_brightness = last_state.attributes[ATTR_LAST_BRIGHTNESS]