"""Diagnostic binary sensors of a ninlight lamp: the sACN receiver's state."""

from __future__ import annotations

from homeassistant.components.binary_sensor import BinarySensorEntity
from homeassistant.const import EntityCategory
from homeassistant.core import HomeAssistant
from homeassistant.helpers.entity_platform import AddConfigEntryEntitiesCallback

from .coordinator import NinlightConfigEntry, NinlightCoordinator
from .entity import NinlightEntity

PARALLEL_UPDATES = 0


async def async_setup_entry(
    hass: HomeAssistant,
    entry: NinlightConfigEntry,
    async_add_entities: AddConfigEntryEntitiesCallback,
) -> None:
    async_add_entities(
        [NinlightSacnActive(entry.runtime_data), NinlightSacnMulticast(entry.runtime_data)]
    )


class _NinlightSacnInfo(NinlightEntity, BinarySensorEntity):
    """Base for the two flags the lamp reports under system/info -> sacn."""

    _attr_entity_category = EntityCategory.DIAGNOSTIC
    _field: str

    @property
    def available(self) -> bool:
        return super().available and self.coordinator.data.sacn_info is not None

    @property
    def is_on(self) -> bool:
        return bool((self.coordinator.data.sacn_info or {}).get(self._field))


class NinlightSacnActive(_NinlightSacnInfo):
    """True while a controller is driving the lamp."""

    _attr_translation_key = "sacn_active"
    _field = "active"

    def __init__(self, coordinator: NinlightCoordinator) -> None:
        super().__init__(coordinator, "sacn_active")


class NinlightSacnMulticast(_NinlightSacnInfo):
    """True when the lamp joined the multicast group of its universe.

    Off by default like the other diagnostics: it reads "true" in normal operation and
    only earns its place when multicast does not arrive. It is worth having - a wrong
    group address once cost two evenings of searching, and this flag is where that shows.
    """

    _attr_translation_key = "sacn_multicast"
    _attr_entity_registry_enabled_default = False
    _field = "multicast"

    def __init__(self, coordinator: NinlightCoordinator) -> None:
        super().__init__(coordinator, "sacn_multicast")