"""Support for Cambridge Audio switch entities."""

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

from aiostreammagic import StreamMagicClient

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

from .entity import CambridgeAudioEntity


@dataclass(frozen=True, kw_only=True)
class CambridgeAudioSwitchEntityDescription(SwitchEntityDescription):
    """Describes Cambridge Audio switch entity."""

    value_fn: Callable[[StreamMagicClient], bool]
    set_value_fn: Callable[[StreamMagicClient, bool], Awaitable[None]]


CONTROL_ENTITIES: tuple[CambridgeAudioSwitchEntityDescription, ...] = (
    CambridgeAudioSwitchEntityDescription(
        key="pre_amp",
        translation_key="pre_amp",
        entity_category=EntityCategory.CONFIG,
        value_fn=lambda client: client.state.pre_amp_mode,
        set_value_fn=lambda client, value: client.set_pre_amp_mode(value),
    ),
    CambridgeAudioSwitchEntityDescription(
        key="early_update",
        translation_key="early_update",
        entity_category=EntityCategory.CONFIG,
        value_fn=lambda client: client.update.early_update,
        set_value_fn=lambda client, value: client.set_early_update(value),
    ),
)


async def async_setup_entry(
    hass: HomeAssistant,
    entry: ConfigEntry,
    async_add_entities: AddEntitiesCallback,
) -> None:
    """Set up Cambridge Audio switch entities based on a config entry."""
    async_add_entities(
        CambridgeAudioSwitch(entry.runtime_data, description)
        for description in CONTROL_ENTITIES
    )


class CambridgeAudioSwitch(CambridgeAudioEntity, SwitchEntity):
    """Defines a Cambridge Audio switch entity."""

    entity_description: CambridgeAudioSwitchEntityDescription

    def __init__(
        self,
        client: StreamMagicClient,
        description: CambridgeAudioSwitchEntityDescription,
    ) -> None:
        """Initialize Cambridge Audio switch."""
        super().__init__(client)
        self.entity_description = description
        self._attr_unique_id = f"{client.info.unit_id}-{description.key}"

    @property
    def is_on(self) -> bool:
        """Return the state of the switch."""
        return self.entity_description.value_fn(self.client)

    async def async_turn_on(self, **kwargs: Any) -> None:
        """Turn the switch on."""
        await self.entity_description.set_value_fn(self.client, True)

    async def async_turn_off(self, **kwargs: Any) -> None:
        """Turn the switch off."""
        await self.entity_description.set_value_fn(self.client, False)