"""Support for the QNAP QSW binary sensors."""

from dataclasses import dataclass, replace
from typing import Final, override

from aioqsw.const import (
    QSD_ANOMALY,
    QSD_FIRMWARE_CONDITION,
    QSD_LACP_PORTS,
    QSD_LINK,
    QSD_MESSAGE,
    QSD_PORTS,
    QSD_PORTS_STATUS,
)

from homeassistant.components.binary_sensor import (
    BinarySensorDeviceClass,
    BinarySensorEntity,
    BinarySensorEntityDescription,
)
from homeassistant.const import EntityCategory
from homeassistant.core import HomeAssistant, callback
from homeassistant.helpers.entity_platform import AddConfigEntryEntitiesCallback
from homeassistant.helpers.typing import UNDEFINED

from .const import ATTR_MESSAGE
from .coordinator import QnapQswConfigEntry, QswDataCoordinator
from .entity import QswEntityDescription, QswEntityType, QswSensorEntity


@dataclass(frozen=True)
class QswBinarySensorEntityDescription(
    BinarySensorEntityDescription, QswEntityDescription
):
    """A class that describes QNAP QSW binary sensor entities."""

    attributes: dict[str, list[str]] | None = None
    qsw_type: QswEntityType | None = None
    sep_key: str = "_"


BINARY_SENSOR_TYPES: Final[tuple[QswBinarySensorEntityDescription, ...]] = (
    QswBinarySensorEntityDescription(
        attributes={
            ATTR_MESSAGE: [QSD_FIRMWARE_CONDITION, QSD_MESSAGE],
        },
        device_class=BinarySensorDeviceClass.PROBLEM,
        entity_category=EntityCategory.DIAGNOSTIC,
        key=QSD_FIRMWARE_CONDITION,
        subkey=QSD_ANOMALY,
    ),
)

LACP_PORT_BINARY_SENSOR_TYPES: Final[tuple[QswBinarySensorEntityDescription, ...]] = (
    QswBinarySensorEntityDescription(
        device_class=BinarySensorDeviceClass.CONNECTIVITY,
        entity_registry_enabled_default=False,
        key=QSD_PORTS_STATUS,
        qsw_type=QswEntityType.LACP_PORT,
        name="Link",
        subkey=QSD_LINK,
    ),
)

PORT_BINARY_SENSOR_TYPES: Final[tuple[QswBinarySensorEntityDescription, ...]] = (
    QswBinarySensorEntityDescription(
        device_class=BinarySensorDeviceClass.CONNECTIVITY,
        entity_registry_enabled_default=False,
        key=QSD_PORTS_STATUS,
        qsw_type=QswEntityType.PORT,
        name="Link",
        subkey=QSD_LINK,
    ),
)


async def async_setup_entry(
    hass: HomeAssistant,
    entry: QnapQswConfigEntry,
    async_add_entities: AddConfigEntryEntitiesCallback,
) -> None:
    """Add QNAP QSW binary sensors from a config_entry."""
    coordinator = entry.runtime_data.data_coordinator

    entities: list[QswBinarySensor] = [
        QswBinarySensor(coordinator, description, entry)
        for description in BINARY_SENSOR_TYPES
        if (
            description.key in coordinator.data
            and description.subkey in coordinator.data[description.key]
        )
    ]

    for description in LACP_PORT_BINARY_SENSOR_TYPES:
        if (
            description.key in coordinator.data
            and QSD_LACP_PORTS in coordinator.data[description.key]
        ):
            for port_id, port_values in coordinator.data[description.key][
                QSD_LACP_PORTS
            ].items():
                if description.subkey in port_values:
                    _desc = replace(
                        description,
                        sep_key=f"_lacp_port_{port_id}_",
                        name=f"LACP Port {port_id} {description.name}",
                    )
                    entities.append(QswBinarySensor(coordinator, _desc, entry, port_id))

    for description in PORT_BINARY_SENSOR_TYPES:
        if (
            description.key in coordinator.data
            and QSD_PORTS in coordinator.data[description.key]
        ):
            for port_id, port_values in coordinator.data[description.key][
                QSD_PORTS
            ].items():
                if description.subkey in port_values:
                    _desc = replace(
                        description,
                        sep_key=f"_port_{port_id}_",
                        name=f"Port {port_id} {description.name}",
                    )
                    entities.append(QswBinarySensor(coordinator, _desc, entry, port_id))

    async_add_entities(entities)


class QswBinarySensor(QswSensorEntity, BinarySensorEntity):
    """Define a QNAP QSW binary sensor."""

    entity_description: QswBinarySensorEntityDescription

    def __init__(
        self,
        coordinator: QswDataCoordinator,
        description: QswBinarySensorEntityDescription,
        entry: QnapQswConfigEntry,
        type_id: int | None = None,
    ) -> None:
        """Initialize."""
        super().__init__(coordinator, entry, type_id)
        if description.name is UNDEFINED:
            self._attr_has_entity_name = True
        else:
            self._attr_name = f"{self.product} {description.name}"
        self._attr_unique_id = (
            f"{entry.unique_id}_{description.key}"
            f"{description.sep_key}{description.subkey}"
        )
        self.entity_description = description
        self._async_update_attrs()

    @callback
    @override
    def _async_update_attrs(self) -> None:
        """Update binary sensor attributes."""
        self._attr_is_on = self.get_device_value(
            self.entity_description.key,
            self.entity_description.subkey,
            self.entity_description.qsw_type,
        )
        super()._async_update_attrs()
