light.py

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"""Support for Duotecno lights."""
 
from typing import Any
 
from duotecno.controller import PyDuotecno
from duotecno.unit import DimUnit
 
from homeassistant.components.light import ATTR_BRIGHTNESS, ColorMode, LightEntity
from homeassistant.config_entries import ConfigEntry
from homeassistant.core import HomeAssistant
from homeassistant.helpers.entity_platform import AddEntitiesCallback
 
from .const import DOMAIN
from .entity import DuotecnoEntity, api_call
 
 
async def async_setup_entry(
    hass: HomeAssistant,
    entry: ConfigEntry,
    async_add_entities: AddEntitiesCallback,
) -> None:
    """Set up Duotecno light based on config_entry."""
    cntrl: PyDuotecno = hass.data[DOMAIN][entry.entry_id]
    async_add_entities(DuotecnoLight(channel) for channel in cntrl.get_units("DimUnit"))
 
 
class DuotecnoLight(DuotecnoEntity, LightEntity):
    """Representation of a light."""
 
    _unit: DimUnit
    _attr_color_mode = ColorMode.BRIGHTNESS
    _attr_supported_color_modes = {ColorMode.BRIGHTNESS}
 
    @property
    def is_on(self) -> bool:
        """Return true if the light is on."""
        return self._unit_unit.is_on()
 
    @property
    def brightness(self) -> int:
        """Return the brightness of the light."""
        return int((self._unit_unit.get_dimmer_state() * 255) / 100)
 
    @api_call
    async def async_turn_on(self, **kwargs: Any) -> None:
        """Instruct the light to turn on."""
        if (val := kwargs.get(ATTR_BRIGHTNESS)) is not None:
            # set to a value
            val = max(int((val * 100) / 255), 1)
        else:
            # restore state
            val = None
        await self._unit_unit.set_dimmer_state(val)
 
    @api_call
    async def async_turn_off(self, **kwargs: Any) -> None:
        """Instruct the light to turn off."""
        await self._unit_unit.set_dimmer_state(0)