"""Support for Autoskope device tracking."""

from typing import override

from autoskope_client.constants import MANUFACTURER
from autoskope_client.models import Vehicle

from homeassistant.components.device_tracker import TrackerEntity
from homeassistant.core import HomeAssistant, callback
from homeassistant.helpers import device_registry as dr
from homeassistant.helpers.device_registry import DeviceInfo
from homeassistant.helpers.entity_platform import AddConfigEntryEntitiesCallback
from homeassistant.helpers.update_coordinator import CoordinatorEntity

from .const import DOMAIN
from .coordinator import AutoskopeConfigEntry, AutoskopeDataUpdateCoordinator

PARALLEL_UPDATES = 0


async def async_setup_entry(
    hass: HomeAssistant,
    entry: AutoskopeConfigEntry,
    async_add_entities: AddConfigEntryEntitiesCallback,
) -> None:
    """Set up Autoskope device tracker entities."""
    coordinator: AutoskopeDataUpdateCoordinator = entry.runtime_data
    tracked_vehicles: set[str] = set()

    @callback
    def update_entities() -> None:
        """Update entities based on coordinator data."""
        current_vehicles = set(coordinator.data.keys())
        vehicles_to_add = current_vehicles - tracked_vehicles

        if vehicles_to_add:
            new_entities = [
                AutoskopeDeviceTracker(coordinator, vehicle_id)
                for vehicle_id in vehicles_to_add
            ]
            tracked_vehicles.update(vehicles_to_add)
            async_add_entities(new_entities)

    entry.async_on_unload(coordinator.async_add_listener(update_entities))
    update_entities()


class AutoskopeDeviceTracker(
    CoordinatorEntity[AutoskopeDataUpdateCoordinator], TrackerEntity
):
    """Representation of an Autoskope tracked device."""

    _attr_has_entity_name = True
    _attr_name: str | None = None

    def __init__(
        self, coordinator: AutoskopeDataUpdateCoordinator, vehicle_id: str
    ) -> None:
        """Initialize the TrackerEntity."""
        super().__init__(coordinator)
        self._vehicle_id = vehicle_id
        self._attr_unique_id = vehicle_id

    @callback
    @override
    def _handle_coordinator_update(self) -> None:
        """Handle updated data from the coordinator."""
        if (
            self._vehicle_id in self.coordinator.data
            and (device_entry := self.device_entry) is not None
            and device_entry.name != self._vehicle_data.name
        ):
            device_registry = dr.async_get(self.hass)
            device_registry.async_update_device(
                device_entry.id, name=self._vehicle_data.name
            )
        super()._handle_coordinator_update()

    @property
    @override
    def device_info(self) -> DeviceInfo:
        """Return device info for the vehicle."""
        vehicle = self.coordinator.data[self._vehicle_id]
        return DeviceInfo(
            identifiers={(DOMAIN, str(vehicle.id))},
            name=vehicle.name,
            manufacturer=MANUFACTURER,
            model=vehicle.model,
            serial_number=vehicle.imei,
        )

    @property
    @override
    def available(self) -> bool:
        """Return if entity is available."""
        return (
            super().available
            and self.coordinator.data is not None
            and self._vehicle_id in self.coordinator.data
        )

    @property
    def _vehicle_data(self) -> Vehicle:
        """Return the vehicle data for the current entity."""
        return self.coordinator.data[self._vehicle_id]

    @property
    @override
    def latitude(self) -> float | None:
        """Return latitude value of the device."""
        if (vehicle := self._vehicle_data) and vehicle.position:
            return float(vehicle.position.latitude)
        return None

    @property
    @override
    def longitude(self) -> float | None:
        """Return longitude value of the device."""
        if (vehicle := self._vehicle_data) and vehicle.position:
            return float(vehicle.position.longitude)
        return None

    @property
    @override
    def location_accuracy(self) -> float:
        """Return the location accuracy of the device in meters."""
        if (vehicle := self._vehicle_data) and vehicle.gps_quality:
            if vehicle.gps_quality > 0:
                # HDOP to estimated accuracy in meters
                # HDOP of 1-2 = good (5-10m), 2-5 = moderate (10-25m), >5 = poor (>25m)
                return float(max(5, int(vehicle.gps_quality * 5.0)))
        return 0.0

    @property
    @override
    def icon(self) -> str:
        """Return the icon based on the vehicle's activity."""
        if self._vehicle_id not in self.coordinator.data:
            return "mdi:car-clock"
        vehicle = self._vehicle_data
        if vehicle.position:
            if vehicle.position.park_mode:
                return "mdi:car-brake-parking"
            if vehicle.position.speed > 5:  # Moving threshold: 5 km/h
                return "mdi:car-arrow-right"
            return "mdi:car"
        return "mdi:car-clock"