"""Define switch func."""
from __future__ import annotations

from collections.abc import Awaitable, Callable
from dataclasses import dataclass
from typing import Any

from intellifire4py import IntellifireControlAsync, IntellifirePollData

from homeassistant.components.switch import SwitchEntity, SwitchEntityDescription
from homeassistant.config_entries import ConfigEntry
from homeassistant.core import HomeAssistant
from homeassistant.helpers.entity_platform import AddEntitiesCallback

from .const import DOMAIN
from .coordinator import IntellifireDataUpdateCoordinator
from .entity import IntellifireEntity


@dataclass()
class IntellifireSwitchRequiredKeysMixin:
    """Mixin for required keys."""

    on_fn: Callable[[IntellifireControlAsync], Awaitable]
    off_fn: Callable[[IntellifireControlAsync], Awaitable]
    value_fn: Callable[[IntellifirePollData], bool]


@dataclass
class IntellifireSwitchEntityDescription(
    SwitchEntityDescription, IntellifireSwitchRequiredKeysMixin
):
    """Describes a switch entity."""


INTELLIFIRE_SWITCHES: tuple[IntellifireSwitchEntityDescription, ...] = (
    IntellifireSwitchEntityDescription(
        key="on_off",
        name="Flame",
        on_fn=lambda control_api: control_api.flame_on(
            fireplace=control_api.default_fireplace
        ),
        off_fn=lambda control_api: control_api.flame_off(
            fireplace=control_api.default_fireplace
        ),
        value_fn=lambda data: data.is_on,
    ),
    IntellifireSwitchEntityDescription(
        key="pilot",
        name="Pilot Light",
        icon="mdi:fire-alert",
        on_fn=lambda control_api: control_api.pilot_on(
            fireplace=control_api.default_fireplace
        ),
        off_fn=lambda control_api: control_api.pilot_off(
            fireplace=control_api.default_fireplace
        ),
        value_fn=lambda data: data.pilot_on,
    ),
)


async def async_setup_entry(
    hass: HomeAssistant,
    entry: ConfigEntry,
    async_add_entities: AddEntitiesCallback,
) -> None:
    """Configure switch entities."""
    coordinator: IntellifireDataUpdateCoordinator = hass.data[DOMAIN][entry.entry_id]

    async_add_entities(
        IntellifireSwitch(coordinator=coordinator, description=description)
        for description in INTELLIFIRE_SWITCHES
    )


class IntellifireSwitch(IntellifireEntity, SwitchEntity):
    """Define an Intellifire Switch."""

    entity_description: IntellifireSwitchEntityDescription

    async def async_turn_on(self, **kwargs: Any) -> None:
        """Turn on the switch."""
        await self.entity_description.on_fn(self.coordinator.control_api)

    async def async_turn_off(self, **kwargs: Any) -> None:
        """Turn off the switch."""
        await self.entity_description.off_fn(self.coordinator.control_api)

    @property
    def is_on(self) -> bool | None:
        """Return the on state."""
        return self.entity_description.value_fn(self.coordinator.read_api.data)