core/homeassistant/components/litejet/light.py

107 lines
3.0 KiB
Python

"""Support for LiteJet lights."""
import logging
from homeassistant.components.light import (
ATTR_BRIGHTNESS,
SUPPORT_BRIGHTNESS,
LightEntity,
)
from .const import DOMAIN
_LOGGER = logging.getLogger(__name__)
ATTR_NUMBER = "number"
async def async_setup_entry(hass, config_entry, async_add_entities):
"""Set up entry."""
system = hass.data[DOMAIN]
def get_entities(system):
entities = []
for i in system.loads():
name = system.get_load_name(i)
entities.append(LiteJetLight(config_entry.entry_id, system, i, name))
return entities
async_add_entities(await hass.async_add_executor_job(get_entities, system), True)
class LiteJetLight(LightEntity):
"""Representation of a single LiteJet light."""
def __init__(self, entry_id, lj, i, name):
"""Initialize a LiteJet light."""
self._entry_id = entry_id
self._lj = lj
self._index = i
self._brightness = 0
self._name = name
async def async_added_to_hass(self):
"""Run when this Entity has been added to HA."""
self._lj.on_load_activated(self._index, self._on_load_changed)
self._lj.on_load_deactivated(self._index, self._on_load_changed)
async def async_will_remove_from_hass(self):
"""Entity being removed from hass."""
self._lj.unsubscribe(self._on_load_changed)
def _on_load_changed(self):
"""Handle state changes."""
_LOGGER.debug("Updating due to notification for %s", self._name)
self.schedule_update_ha_state(True)
@property
def supported_features(self):
"""Flag supported features."""
return SUPPORT_BRIGHTNESS
@property
def name(self):
"""Return the light's name."""
return self._name
@property
def unique_id(self):
"""Return a unique identifier for this light."""
return f"{self._entry_id}_{self._index}"
@property
def brightness(self):
"""Return the light's brightness."""
return self._brightness
@property
def is_on(self):
"""Return if the light is on."""
return self._brightness != 0
@property
def should_poll(self):
"""Return that lights do not require polling."""
return False
@property
def extra_state_attributes(self):
"""Return the device state attributes."""
return {ATTR_NUMBER: self._index}
def turn_on(self, **kwargs):
"""Turn on the light."""
if ATTR_BRIGHTNESS in kwargs:
brightness = int(kwargs[ATTR_BRIGHTNESS] / 255 * 99)
self._lj.activate_load_at(self._index, brightness, 0)
else:
self._lj.activate_load(self._index)
def turn_off(self, **kwargs):
"""Turn off the light."""
self._lj.deactivate_load(self._index)
def update(self):
"""Retrieve the light's brightness from the LiteJet system."""
self._brightness = self._lj.get_load_level(self._index) / 99 * 255