binary_sensor.py

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"""Support for Aurora Forecast binary sensor."""
 
from __future__ import annotations
 
from homeassistant.components.binary_sensor import BinarySensorEntity
from homeassistant.core import HomeAssistant
from homeassistant.helpers.entity_platform import AddEntitiesCallback
 
from . import AuroraConfigEntry
from .entity import AuroraEntity
 
 
async def async_setup_entry(
    hass: HomeAssistant,
    entry: AuroraConfigEntry,
    async_add_entities: AddEntitiesCallback,
) -> None:
    """Set up the binary_sensor platform."""
    async_add_entities(
        [
            AuroraSensor(
                coordinator=entry.runtime_data,
                translation_key="visibility_alert",
            )
        ]
    )
 
 
class AuroraSensor(AuroraEntity, BinarySensorEntity):
    """Implementation of an aurora sensor."""
 
    @property
    def is_on(self) -> bool:
        """Return true if aurora is visible."""
        return self.coordinator.data > self.coordinator.threshold