"""Support for KNX/IP switches."""
from __future__ import annotations

from typing import Any, Callable, Iterable

from xknx.devices import Switch as XknxSwitch

from homeassistant.components.switch import SwitchEntity
from homeassistant.core import HomeAssistant
from homeassistant.helpers.entity import Entity
from homeassistant.helpers.typing import ConfigType, DiscoveryInfoType

from .const import DOMAIN
from .knx_entity import KnxEntity


async def async_setup_platform(
    hass: HomeAssistant,
    config: ConfigType,
    async_add_entities: Callable[[Iterable[Entity]], None],
    discovery_info: DiscoveryInfoType | None = None,
) -> None:
    """Set up switch(es) for KNX platform."""
    entities = []
    for device in hass.data[DOMAIN].xknx.devices:
        if isinstance(device, XknxSwitch):
            entities.append(KNXSwitch(device))
    async_add_entities(entities)


class KNXSwitch(KnxEntity, SwitchEntity):
    """Representation of a KNX switch."""

    def __init__(self, device: XknxSwitch) -> None:
        """Initialize of KNX switch."""
        self._device: XknxSwitch
        super().__init__(device)

    @property
    def is_on(self) -> bool:
        """Return true if device is on."""
        return bool(self._device.state)

    async def async_turn_on(self, **kwargs: Any) -> None:
        """Turn the device on."""
        await self._device.set_on()

    async def async_turn_off(self, **kwargs: Any) -> None:
        """Turn the device off."""
        await self._device.set_off()