"""Light platform for the Carefree BT12 awning's built-in LED strip."""
from __future__ import annotations

from typing import Any

from homeassistant.components.light import ColorMode, LightEntity
from homeassistant.config_entries import ConfigEntry
from homeassistant.core import HomeAssistant, callback
from homeassistant.helpers.entity import DeviceInfo
from homeassistant.helpers.entity_platform import AddEntitiesCallback

from .const import DOMAIN
from .coordinator import Bt12Coordinator


async def async_setup_entry(
    hass: HomeAssistant, entry: ConfigEntry, async_add_entities: AddEntitiesCallback
) -> None:
    coordinator: Bt12Coordinator = hass.data[DOMAIN][entry.entry_id]
    device_info = DeviceInfo(
        identifiers={(DOMAIN, entry.data["address"])},
        name=entry.data.get("name", "BT12 Awning"),
        manufacturer="Carefree of Colorado",
        model="BT12",
    )
    async_add_entities([Bt12Light(coordinator, device_info)])


class Bt12Light(LightEntity):
    """The awning's LED strip.

    "On" always sends a fixed level byte (0x19) -- no brightness-setting
    command has been decoded yet (the app's slider wasn't isolated in
    reverse-engineering), so this is on/off only for now.
    """

    _attr_has_entity_name = True
    _attr_name = "Light"
    _attr_assumed_state = True
    _attr_should_poll = False
    _attr_color_mode = ColorMode.ONOFF
    _attr_supported_color_modes = {ColorMode.ONOFF}

    def __init__(self, coordinator: Bt12Coordinator, device_info: DeviceInfo) -> None:
        self._coordinator = coordinator
        self._attr_unique_id = f"{coordinator.address}_light"
        self._attr_device_info = device_info

    @property
    def is_on(self) -> bool | None:
        return self._coordinator.light_on

    async def async_turn_on(self, **kwargs: Any) -> None:
        await self._coordinator.async_light_on()

    async def async_turn_off(self, **kwargs: Any) -> None:
        await self._coordinator.async_light_off()

    async def async_added_to_hass(self) -> None:
        self.async_on_remove(self._coordinator.async_add_listener(self._handle_update))

    @callback
    def _handle_update(self) -> None:
        self.async_write_ha_state()