text: """Support for Notion binary sensors."""
  from __future__ import annotations
  
  from dataclasses import dataclass
  from typing import Literal
  
  from homeassistant.components.binary_sensor import (
      BinarySensorDeviceClass,
      BinarySensorEntity,
      BinarySensorEntityDescription,
  )
  from homeassistant.config_entries import ConfigEntry
  from homeassistant.core import HomeAssistant, callback
  from homeassistant.helpers.entity import EntityCategory
  from homeassistant.helpers.entity_platform import AddEntitiesCallback
  
  from . import NotionEntity
  from .const import (
      DOMAIN,
      LOGGER,
      SENSOR_BATTERY,
      SENSOR_DOOR,
      SENSOR_GARAGE_DOOR,
      SENSOR_LEAK,
      SENSOR_MISSING,
      SENSOR_SAFE,
      SENSOR_SLIDING,
      SENSOR_SMOKE_CO,
      SENSOR_WINDOW_HINGED_HORIZONTAL,
      SENSOR_WINDOW_HINGED_VERTICAL,
  )
  
  
  @dataclass
  class NotionBinarySensorDescriptionMixin:
      """Define an entity description mixin for binary and regular sensors."""
  
      on_state: Literal["alarm", "critical", "leak", "not_missing", "open"]
  
  
  @dataclass
  class NotionBinarySensorDescription(
      BinarySensorEntityDescription, NotionBinarySensorDescriptionMixin
  ):
      """Describe a Notion binary sensor."""
  
  
  BINARY_SENSOR_DESCRIPTIONS = (
      NotionBinarySensorDescription(
          key=SENSOR_BATTERY,
          name="Low Battery",
          device_class=BinarySensorDeviceClass.BATTERY,
          entity_category=EntityCategory.DIAGNOSTIC,
          on_state="critical",
      ),
      NotionBinarySensorDescription(
          key=SENSOR_DOOR,
          name="Door",
          device_class=BinarySensorDeviceClass.DOOR,
          on_state="open",
      ),
      NotionBinarySensorDescription(
          key=SENSOR_GARAGE_DOOR,
          name="Garage Door",
          device_class=BinarySensorDeviceClass.GARAGE_DOOR,
          on_state="open",
      ),
      NotionBinarySensorDescription(
          key=SENSOR_LEAK,
          name="Leak Detector",
          device_class=BinarySensorDeviceClass.MOISTURE,
          on_state="leak",
      ),
      NotionBinarySensorDescription(
          key=SENSOR_MISSING,
          name="Missing",
          device_class=BinarySensorDeviceClass.CONNECTIVITY,
          entity_category=EntityCategory.DIAGNOSTIC,
          on_state="not_missing",
      ),
      NotionBinarySensorDescription(
          key=SENSOR_SAFE,
          name="Safe",
          device_class=BinarySensorDeviceClass.DOOR,
          on_state="open",
      ),
      NotionBinarySensorDescription(
          key=SENSOR_SLIDING,
          name="Sliding Door/Window",
          device_class=BinarySensorDeviceClass.DOOR,
          on_state="open",
      ),
      NotionBinarySensorDescription(
          key=SENSOR_SMOKE_CO,
          name="Smoke/Carbon Monoxide Detector",
          device_class=BinarySensorDeviceClass.SMOKE,
          on_state="alarm",
      ),
      NotionBinarySensorDescription(
          key=SENSOR_WINDOW_HINGED_HORIZONTAL,
          name="Hinged Window",
          device_class=BinarySensorDeviceClass.WINDOW,
          on_state="open",
      ),
      NotionBinarySensorDescription(
          key=SENSOR_WINDOW_HINGED_VERTICAL,
          name="Hinged Window",
          device_class=BinarySensorDeviceClass.WINDOW,
          on_state="open",
      ),
  )
  
  
  async def async_setup_entry(
      hass: HomeAssistant, entry: ConfigEntry, async_add_entities: AddEntitiesCallback
  ) -> None:
      """Set up Notion sensors based on a config entry."""
      coordinator = hass.data[DOMAIN][entry.entry_id]
  
      async_add_entities(
          [
              NotionBinarySensor(
                  coordinator,
                  task_id,
                  sensor["id"],
                  sensor["bridge"]["id"],
                  sensor["system_id"],
                  description,
              )
              for task_id, task in coordinator.data["tasks"].items()
              for description in BINARY_SENSOR_DESCRIPTIONS
              if description.key == task["task_type"]
              and (sensor := coordinator.data["sensors"][task["sensor_id"]])
          ]
      )
  
  
  class NotionBinarySensor(NotionEntity, BinarySensorEntity):
      """Define a Notion sensor."""
  
      entity_description: NotionBinarySensorDescription
  
      @callback
      def _async_update_from_latest_data(self) -> None:
          """Fetch new state data for the sensor."""
          task = self.coordinator.data["tasks"][self._task_id]
  
          if "value" in task["status"]:
              state = task["status"]["value"]
          elif task["status"].get("insights", {}).get("primary"):
              state = task["status"]["insights"]["primary"]["to_state"]
          else:
              LOGGER.warning("Unknown data payload: %s", task["status"])
              state = None
  
          self._attr_is_on = self.entity_description.on_state == state
  