"""Support for Velbus switches."""

from typing import Any

from velbusaio.channels import Relay as VelbusRelay

from homeassistant.components.switch import SwitchEntity
from homeassistant.core import HomeAssistant
from homeassistant.helpers.entity_platform import AddEntitiesCallback

from . import VelbusConfigEntry
from .entity import VelbusEntity, api_call

PARALLEL_UPDATES = 0


async def async_setup_entry(
    hass: HomeAssistant,
    entry: VelbusConfigEntry,
    async_add_entities: AddEntitiesCallback,
) -> None:
    """Set up Velbus switch based on config_entry."""
    await entry.runtime_data.scan_task
    async_add_entities(
        VelbusSwitch(channel)
        for channel in entry.runtime_data.controller.get_all_switch()
    )


class VelbusSwitch(VelbusEntity, SwitchEntity):
    """Representation of a switch."""

    _channel: VelbusRelay

    @property
    def is_on(self) -> bool:
        """Return true if the switch is on."""
        return self._channel.is_on()

    @api_call
    async def async_turn_on(self, **kwargs: Any) -> None:
        """Instruct the switch to turn on."""
        await self._channel.turn_on()

    @api_call
    async def async_turn_off(self, **kwargs: Any) -> None:
        """Instruct the switch to turn off."""
        await self._channel.turn_off()