"""Support for Bond lights."""
from __future__ import annotations

import logging
from typing import Any

from aiohttp.client_exceptions import ClientResponseError
from bond_api import Action, BPUPSubscriptions, DeviceType
import voluptuous as vol

from homeassistant.components.light import (
    ATTR_BRIGHTNESS,
    SUPPORT_BRIGHTNESS,
    LightEntity,
)
from homeassistant.config_entries import ConfigEntry
from homeassistant.core import HomeAssistant, callback
from homeassistant.exceptions import HomeAssistantError
from homeassistant.helpers import config_validation as cv, entity_platform
from homeassistant.helpers.entity import Entity
from homeassistant.helpers.entity_platform import AddEntitiesCallback

from . import BondHub
from .const import (
    ATTR_POWER_STATE,
    BPUP_SUBS,
    DOMAIN,
    HUB,
    SERVICE_SET_LIGHT_BRIGHTNESS_BELIEF,
    SERVICE_SET_LIGHT_POWER_BELIEF,
)
from .entity import BondEntity
from .utils import BondDevice

_LOGGER = logging.getLogger(__name__)

SERVICE_START_INCREASING_BRIGHTNESS = "start_increasing_brightness"
SERVICE_START_DECREASING_BRIGHTNESS = "start_decreasing_brightness"
SERVICE_STOP = "stop"

ENTITY_SERVICES = [
    SERVICE_START_INCREASING_BRIGHTNESS,
    SERVICE_START_DECREASING_BRIGHTNESS,
    SERVICE_STOP,
]


async def async_setup_entry(
    hass: HomeAssistant,
    entry: ConfigEntry,
    async_add_entities: AddEntitiesCallback,
) -> None:
    """Set up Bond light devices."""
    data = hass.data[DOMAIN][entry.entry_id]
    hub: BondHub = data[HUB]
    bpup_subs: BPUPSubscriptions = data[BPUP_SUBS]
    platform = entity_platform.async_get_current_platform()

    platform = entity_platform.async_get_current_platform()
    for service in ENTITY_SERVICES:
        platform.async_register_entity_service(
            service,
            {},
            f"async_{service}",
        )

    fan_lights: list[Entity] = [
        BondLight(hub, device, bpup_subs)
        for device in hub.devices
        if DeviceType.is_fan(device.type)
        and device.supports_light()
        and not (device.supports_up_light() and device.supports_down_light())
    ]

    fan_up_lights: list[Entity] = [
        BondUpLight(hub, device, bpup_subs, "up_light")
        for device in hub.devices
        if DeviceType.is_fan(device.type) and device.supports_up_light()
    ]

    fan_down_lights: list[Entity] = [
        BondDownLight(hub, device, bpup_subs, "down_light")
        for device in hub.devices
        if DeviceType.is_fan(device.type) and device.supports_down_light()
    ]

    fireplaces: list[Entity] = [
        BondFireplace(hub, device, bpup_subs)
        for device in hub.devices
        if DeviceType.is_fireplace(device.type)
    ]

    fp_lights: list[Entity] = [
        BondLight(hub, device, bpup_subs, "light")
        for device in hub.devices
        if DeviceType.is_fireplace(device.type) and device.supports_light()
    ]

    lights: list[Entity] = [
        BondLight(hub, device, bpup_subs)
        for device in hub.devices
        if DeviceType.is_light(device.type)
    ]

    platform.async_register_entity_service(
        SERVICE_SET_LIGHT_BRIGHTNESS_BELIEF,
        {
            vol.Required(ATTR_BRIGHTNESS): vol.All(
                vol.Number(scale=0), vol.Range(0, 255)
            )
        },
        "async_set_brightness_belief",
    )

    platform.async_register_entity_service(
        SERVICE_SET_LIGHT_POWER_BELIEF,
        {vol.Required(ATTR_POWER_STATE): vol.All(cv.boolean)},
        "async_set_power_belief",
    )

    async_add_entities(
        fan_lights + fan_up_lights + fan_down_lights + fireplaces + fp_lights + lights,
        True,
    )


class BondBaseLight(BondEntity, LightEntity):
    """Representation of a Bond light."""

    _attr_supported_features = 0

    async def async_set_brightness_belief(self, brightness: int) -> None:
        """Set the belief state of the light."""
        if not self._device.supports_set_brightness():
            raise HomeAssistantError("This device does not support setting brightness")
        if brightness == 0:
            await self.async_set_power_belief(False)
            return
        try:
            await self._hub.bond.action(
                self._device.device_id,
                Action.set_brightness_belief(round((brightness * 100) / 255)),
            )
        except ClientResponseError as ex:
            raise HomeAssistantError(
                f"The bond API returned an error calling set_brightness_belief for {self.entity_id}.  Code: {ex.code}  Message: {ex.message}"
            ) from ex

    async def async_set_power_belief(self, power_state: bool) -> None:
        """Set the belief state of the light."""
        try:
            await self._hub.bond.action(
                self._device.device_id, Action.set_light_state_belief(power_state)
            )
        except ClientResponseError as ex:
            raise HomeAssistantError(
                f"The bond API returned an error calling set_light_state_belief for {self.entity_id}.  Code: {ex.code}  Message: {ex.message}"
            ) from ex


class BondLight(BondBaseLight, BondEntity, LightEntity):
    """Representation of a Bond light."""

    def __init__(
        self,
        hub: BondHub,
        device: BondDevice,
        bpup_subs: BPUPSubscriptions,
        sub_device: str | None = None,
    ) -> None:
        """Create HA entity representing Bond light."""
        super().__init__(hub, device, bpup_subs, sub_device)
        if device.supports_set_brightness():
            self._attr_supported_features = SUPPORT_BRIGHTNESS

    def _apply_state(self, state: dict) -> None:
        self._attr_is_on = state.get("light") == 1
        brightness = state.get("brightness")
        self._attr_brightness = round(brightness * 255 / 100) if brightness else None

    async def async_turn_on(self, **kwargs: Any) -> None:
        """Turn on the light."""
        brightness = kwargs.get(ATTR_BRIGHTNESS)
        if brightness:
            await self._hub.bond.action(
                self._device.device_id,
                Action.set_brightness(round((brightness * 100) / 255)),
            )
        else:
            await self._hub.bond.action(self._device.device_id, Action.turn_light_on())

    async def async_turn_off(self, **kwargs: Any) -> None:
        """Turn off the light."""
        await self._hub.bond.action(self._device.device_id, Action.turn_light_off())

    @callback
    def _async_has_action_or_raise(self, action: str) -> None:
        """Raise HomeAssistantError if the device does not support an action."""
        if not self._device.has_action(action):
            raise HomeAssistantError(f"{self.entity_id} does not support {action}")

    async def async_start_increasing_brightness(self) -> None:
        """Start increasing the light brightness."""
        self._async_has_action_or_raise(Action.START_INCREASING_BRIGHTNESS)
        await self._hub.bond.action(
            self._device.device_id, Action(Action.START_INCREASING_BRIGHTNESS)
        )

    async def async_start_decreasing_brightness(self) -> None:
        """Start decreasing the light brightness."""
        self._async_has_action_or_raise(Action.START_DECREASING_BRIGHTNESS)
        await self._hub.bond.action(
            self._device.device_id, Action(Action.START_DECREASING_BRIGHTNESS)
        )

    async def async_stop(self) -> None:
        """Stop all actions and clear the queue."""
        self._async_has_action_or_raise(Action.STOP)
        await self._hub.bond.action(self._device.device_id, Action(Action.STOP))


class BondDownLight(BondBaseLight, BondEntity, LightEntity):
    """Representation of a Bond light."""

    def _apply_state(self, state: dict) -> None:
        self._attr_is_on = bool(state.get("down_light") and state.get("light"))

    async def async_turn_on(self, **kwargs: Any) -> None:
        """Turn on the light."""
        await self._hub.bond.action(
            self._device.device_id, Action(Action.TURN_DOWN_LIGHT_ON)
        )

    async def async_turn_off(self, **kwargs: Any) -> None:
        """Turn off the light."""
        await self._hub.bond.action(
            self._device.device_id, Action(Action.TURN_DOWN_LIGHT_OFF)
        )


class BondUpLight(BondBaseLight, BondEntity, LightEntity):
    """Representation of a Bond light."""

    def _apply_state(self, state: dict) -> None:
        self._attr_is_on = bool(state.get("up_light") and state.get("light"))

    async def async_turn_on(self, **kwargs: Any) -> None:
        """Turn on the light."""
        await self._hub.bond.action(
            self._device.device_id, Action(Action.TURN_UP_LIGHT_ON)
        )

    async def async_turn_off(self, **kwargs: Any) -> None:
        """Turn off the light."""
        await self._hub.bond.action(
            self._device.device_id, Action(Action.TURN_UP_LIGHT_OFF)
        )


class BondFireplace(BondEntity, LightEntity):
    """Representation of a Bond-controlled fireplace."""

    _attr_supported_features = SUPPORT_BRIGHTNESS

    def _apply_state(self, state: dict) -> None:
        power = state.get("power")
        flame = state.get("flame")
        self._attr_is_on = power == 1
        self._attr_brightness = round(flame * 255 / 100) if flame else None
        self._attr_icon = "mdi:fireplace" if power == 1 else "mdi:fireplace-off"

    async def async_turn_on(self, **kwargs: Any) -> None:
        """Turn the fireplace on."""
        _LOGGER.debug("Fireplace async_turn_on called with: %s", kwargs)

        brightness = kwargs.get(ATTR_BRIGHTNESS)
        if brightness:
            flame = round((brightness * 100) / 255)
            await self._hub.bond.action(self._device.device_id, Action.set_flame(flame))
        else:
            await self._hub.bond.action(self._device.device_id, Action.turn_on())

    async def async_turn_off(self, **kwargs: Any) -> None:
        """Turn the fireplace off."""
        _LOGGER.debug("Fireplace async_turn_off called with: %s", kwargs)

        await self._hub.bond.action(self._device.device_id, Action.turn_off())

    async def async_set_brightness_belief(self, brightness: int) -> None:
        """Set the belief state of the light."""
        if not self._device.supports_set_brightness():
            raise HomeAssistantError("This device does not support setting brightness")
        if brightness == 0:
            await self.async_set_power_belief(False)
            return
        try:
            await self._hub.bond.action(
                self._device.device_id,
                Action.set_brightness_belief(round((brightness * 100) / 255)),
            )
        except ClientResponseError as ex:
            raise HomeAssistantError(
                f"The bond API returned an error calling set_brightness_belief for {self.entity_id}.  Code: {ex.code}  Message: {ex.message}"
            ) from ex

    async def async_set_power_belief(self, power_state: bool) -> None:
        """Set the belief state of the light."""
        try:
            await self._hub.bond.action(
                self._device.device_id, Action.set_power_state_belief(power_state)
            )
        except ClientResponseError as ex:
            raise HomeAssistantError(
                f"The bond API returned an error calling set_power_state_belief for {self.entity_id}.  Code: {ex.code}  Message: {ex.message}"
            ) from ex