from homeassistant.components.sensor import SensorEntity
from homeassistant.core import HomeAssistant
from homeassistant.const import TIME_MINUTES
from homeassistant.helpers.entity_platform import AddEntitiesCallback
from homeassistant.helpers.typing import ConfigType, DiscoveryInfoType
from .sncf import SNCF, SNCFJourney


def setup_platform(
    hass: HomeAssistant,
    config: ConfigType,
    add_entities: AddEntitiesCallback,
    discovery_info: DiscoveryInfoType = None
) -> None:
    """Set up the sensor platform."""
    add_entities([SNCFNextJourneys(config)])


class SNCFNextJourneys(SensorEntity):
    def __init__(self, config: ConfigType):
        self._config: ConfigType = config
        self._next_schedules: list[SNCFJourney] = []
        self._sncf = SNCF(self._config["token"])
        self._sncf.set_source_stop_point(self._config["source_stop_point"])
        self._sncf.set_dest_stop_point(self._config["dest_stop_point"])
        self._sncf.max_transfers = self._config["max_transfers"]
        self._sncf.max_duration_secs = self._config["max_duration_secs"]

    @property
    def unit_of_measurement(self) -> str:
        """Return the unit of measurement."""
        return TIME_MINUTES

    @property
    def native_value(self):
        """Return the state of the sensor."""
        return SNCF.api_date_to_datetime(self._next_schedules[0]["sections"][0]['departure_date_time'])

    def update(self):
        self._next_schedules = self._sncf.get_next_journeys()