"""Support for the light on the Sisyphus Kinetic Art Table."""
import logging

import aiohttp

from homeassistant.components.light import SUPPORT_BRIGHTNESS, LightEntity
from homeassistant.const import CONF_HOST
from homeassistant.exceptions import PlatformNotReady

from . import DATA_SISYPHUS

_LOGGER = logging.getLogger(__name__)

SUPPORTED_FEATURES = SUPPORT_BRIGHTNESS


async def async_setup_platform(hass, config, add_entities, discovery_info=None):
    """Set up a single Sisyphus table."""
    host = discovery_info[CONF_HOST]
    try:
        table_holder = hass.data[DATA_SISYPHUS][host]
        table = await table_holder.get_table()
    except aiohttp.ClientError as err:
        raise PlatformNotReady() from err

    add_entities([SisyphusLight(table_holder.name, table)], update_before_add=True)


class SisyphusLight(LightEntity):
    """Representation of a Sisyphus table as a light."""

    def __init__(self, name, table):
        """Initialize the Sisyphus table."""
        self._name = name
        self._table = table

    async def async_added_to_hass(self):
        """Add listeners after this object has been initialized."""
        self._table.add_listener(self.async_write_ha_state)

    async def async_update(self):
        """Force update the table state."""
        await self._table.refresh()

    @property
    def available(self):
        """Return true if the table is responding to heartbeats."""
        return self._table.is_connected

    @property
    def unique_id(self):
        """Return the UUID of the table."""
        return self._table.id

    @property
    def name(self):
        """Return the ame of the table."""
        return self._name

    @property
    def is_on(self):
        """Return True if the table is on."""
        return not self._table.is_sleeping

    @property
    def brightness(self):
        """Return the current brightness of the table's ring light."""
        return self._table.brightness * 255

    @property
    def supported_features(self):
        """Return the features supported by the table; i.e. brightness."""
        return SUPPORTED_FEATURES

    async def async_turn_off(self, **kwargs):
        """Put the table to sleep."""
        await self._table.sleep()
        _LOGGER.debug("Sisyphus table %s: sleep")

    async def async_turn_on(self, **kwargs):
        """Wake up the table if necessary, optionally changes brightness."""
        if not self.is_on:
            await self._table.wakeup()
            _LOGGER.debug("Sisyphus table %s: wakeup")

        if "brightness" in kwargs:
            await self._table.set_brightness(kwargs["brightness"] / 255.0)