"""Definition of Picnic sensors."""
from __future__ import annotations

from typing import Any

from homeassistant.components.sensor import SensorEntity
from homeassistant.config_entries import ConfigEntry
from homeassistant.const import ATTR_ATTRIBUTION
from homeassistant.core import HomeAssistant
from homeassistant.helpers.typing import StateType
from homeassistant.helpers.update_coordinator import (
    CoordinatorEntity,
    DataUpdateCoordinator,
)

from .const import (
    ADDRESS,
    ATTRIBUTION,
    CONF_COORDINATOR,
    DOMAIN,
    SENSOR_TYPES,
    PicnicSensorEntityDescription,
)


async def async_setup_entry(
    hass: HomeAssistant, config_entry: ConfigEntry, async_add_entities
):
    """Set up Picnic sensor entries."""
    picnic_coordinator = hass.data[DOMAIN][config_entry.entry_id][CONF_COORDINATOR]

    # Add an entity for each sensor type
    async_add_entities(
        PicnicSensor(picnic_coordinator, config_entry, description)
        for description in SENSOR_TYPES
    )

    return True


class PicnicSensor(SensorEntity, CoordinatorEntity):
    """The CoordinatorEntity subclass representing Picnic sensors."""

    entity_description: PicnicSensorEntityDescription
    _attr_extra_state_attributes = {ATTR_ATTRIBUTION: ATTRIBUTION}

    def __init__(
        self,
        coordinator: DataUpdateCoordinator[Any],
        config_entry: ConfigEntry,
        description: PicnicSensorEntityDescription,
    ) -> None:
        """Init a Picnic sensor."""
        super().__init__(coordinator)
        self.entity_description = description

        self.entity_id = f"sensor.picnic_{description.key}"
        self._service_unique_id = config_entry.unique_id

        self._attr_name = self._to_capitalized_name(description.key)
        self._attr_unique_id = f"{config_entry.unique_id}.{description.key}"

    @property
    def native_value(self) -> StateType:
        """Return the state of the entity."""
        data_set = (
            self.coordinator.data.get(self.entity_description.data_type, {})
            if self.coordinator.data is not None
            else {}
        )
        return self.entity_description.value_fn(data_set)

    @property
    def available(self) -> bool:
        """Return True if entity is available."""
        return self.coordinator.last_update_success and self.state is not None

    @property
    def device_info(self):
        """Return device info."""
        return {
            "identifiers": {(DOMAIN, self._service_unique_id)},
            "manufacturer": "Picnic",
            "model": self._service_unique_id,
            "name": f"Picnic: {self.coordinator.data[ADDRESS]}",
            "entry_type": "service",
        }

    @staticmethod
    def _to_capitalized_name(name: str) -> str:
        return name.replace("_", " ").capitalize()