"""Sensor platform for Linky Tariff integration."""
from __future__ import annotations

from homeassistant.components.sensor import SensorEntity
from homeassistant.config_entries import ConfigEntry
from homeassistant.core import HomeAssistant
from homeassistant.helpers.entity_platform import AddEntitiesCallback
from homeassistant.helpers.update_coordinator import CoordinatorEntity

from .const import DOMAIN

async def async_setup_entry(
    hass: HomeAssistant,
    entry: ConfigEntry,
    async_add_entities: AddEntitiesCallback,
) -> None:
    """Set up the Linky Tariff sensor."""
    coordinator = hass.data[DOMAIN][entry.entry_id]
    async_add_entities([LinkyTariffSensor(coordinator)])

class LinkyTariffSensor(CoordinatorEntity, SensorEntity):
    """Representation of a Linky Tariff sensor."""

    _attr_icon = "mdi:lightning-bolt"
    _attr_has_entity_name = True
    _attr_name = "Linky Tariff Period"

    def __init__(self, coordinator) -> None:
        """Initialize the sensor."""
        super().__init__(coordinator)
        self._attr_unique_id = f"{coordinator.ieee}_tariff_period"
        self._attr_device_info = {
            "identifiers": {(DOMAIN, coordinator.ieee)},
        }

    @property
    def native_value(self) -> str:
        """Return the state of the sensor."""
        return self.coordinator.data["value"]

    @property
    def extra_state_attributes(self) -> dict[str, Any]:
        """Return the state attributes."""
        return {
            "last_update": self.coordinator.data["last_update"],
        }