"""Switches for the Elexa Guardian integration."""

from __future__ import annotations

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

from aioguardian import Client

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

from . import GuardianData, ValveControllerEntity, ValveControllerEntityDescription
from .const import API_VALVE_STATUS, API_WIFI_STATUS, DOMAIN
from .util import convert_exceptions_to_homeassistant_error
from .valve import GuardianValveState

ATTR_AVG_CURRENT = "average_current"
ATTR_CONNECTED_CLIENTS = "connected_clients"
ATTR_INST_CURRENT = "instantaneous_current"
ATTR_INST_CURRENT_DDT = "instantaneous_current_ddt"
ATTR_STATION_CONNECTED = "station_connected"
ATTR_TRAVEL_COUNT = "travel_count"

SWITCH_KIND_ONBOARD_AP = "onboard_ap"
SWITCH_KIND_VALVE = "valve"


@dataclass(frozen=True, kw_only=True)
class ValveControllerSwitchDescription(
    SwitchEntityDescription, ValveControllerEntityDescription
):
    """Describe a Guardian valve controller switch."""

    extra_state_attributes_fn: Callable[[dict[str, Any]], Mapping[str, Any]]
    is_on_fn: Callable[[dict[str, Any]], bool]
    off_fn: Callable[[Client], Awaitable]
    on_fn: Callable[[Client], Awaitable]


async def _async_disable_ap(client: Client) -> None:
    """Disable the onboard AP."""
    async with client:
        await client.wifi.disable_ap()


async def _async_enable_ap(client: Client) -> None:
    """Enable the onboard AP."""
    async with client:
        await client.wifi.enable_ap()


async def _async_close_valve(client: Client) -> None:
    """Close the valve."""
    async with client:
        await client.valve.close()


async def _async_open_valve(client: Client) -> None:
    """Open the valve."""
    async with client:
        await client.valve.open()


@callback
def is_open(data: dict[str, Any]) -> bool:
    """Return if the valve is opening."""
    return data["state"] in (
        GuardianValveState.FINISH_OPENING,
        GuardianValveState.OPEN,
        GuardianValveState.OPENING,
        GuardianValveState.START_OPENING,
    )


VALVE_CONTROLLER_DESCRIPTIONS = (
    ValveControllerSwitchDescription(
        key=SWITCH_KIND_ONBOARD_AP,
        translation_key="onboard_access_point",
        entity_category=EntityCategory.CONFIG,
        extra_state_attributes_fn=lambda data: {
            ATTR_CONNECTED_CLIENTS: data.get("ap_clients"),
            ATTR_STATION_CONNECTED: data["station_connected"],
        },
        api_category=API_WIFI_STATUS,
        is_on_fn=lambda data: data["ap_enabled"],
        off_fn=_async_disable_ap,
        on_fn=_async_enable_ap,
    ),
    ValveControllerSwitchDescription(
        key=SWITCH_KIND_VALVE,
        translation_key="valve_controller",
        api_category=API_VALVE_STATUS,
        extra_state_attributes_fn=lambda data: {
            ATTR_AVG_CURRENT: data["average_current"],
            ATTR_INST_CURRENT: data["instantaneous_current"],
            ATTR_INST_CURRENT_DDT: data["instantaneous_current_ddt"],
            ATTR_TRAVEL_COUNT: data["travel_count"],
        },
        is_on_fn=is_open,
        off_fn=_async_close_valve,
        on_fn=_async_open_valve,
    ),
)


async def async_setup_entry(
    hass: HomeAssistant, entry: ConfigEntry, async_add_entities: AddEntitiesCallback
) -> None:
    """Set up Guardian switches based on a config entry."""
    data: GuardianData = hass.data[DOMAIN][entry.entry_id]

    async_add_entities(
        ValveControllerSwitch(entry, data, description)
        for description in VALVE_CONTROLLER_DESCRIPTIONS
    )


class ValveControllerSwitch(ValveControllerEntity, SwitchEntity):
    """Define a switch related to a Guardian valve controller."""

    entity_description: ValveControllerSwitchDescription

    def __init__(
        self,
        entry: ConfigEntry,
        data: GuardianData,
        description: ValveControllerSwitchDescription,
    ) -> None:
        """Initialize."""
        super().__init__(entry, data.valve_controller_coordinators, description)

        self._client = data.client

    @property
    def extra_state_attributes(self) -> Mapping[str, Any]:
        """Return entity specific state attributes."""
        return self.entity_description.extra_state_attributes_fn(self.coordinator.data)

    @property
    def is_on(self) -> bool:
        """Return True if entity is on."""
        return self.entity_description.is_on_fn(self.coordinator.data)

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

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