"""Cross-platform location / GPS access.

Provides methods for requesting the current device location.

Uses Android's ``LocationManager`` or iOS's ``CLLocationManager``.

"""

from typing import Any, Callable, Optional, Tuple

from ..utils import IS_ANDROID

class Location:

"""GPS / Location services interface."""

@staticmethod

def get_current(

on_result: Optional[Callable[[Optional[Tuple[float, float]]], None]] = None,

**options: Any,

) -> None:

"""Request the current location.

Parameters

----------

on_result:

``((lat, lon) | None) -> None`` called with coordinates or

``None`` if location is unavailable.

"""

if IS_ANDROID:

Location._android_get(on_result, **options)

else:

Location._ios_get(on_result, **options)

@staticmethod

def _android_get(on_result: Optional[Callable] = None, **options: Any) -> None:

try:

from java import jclass

from ..utils import get_android_context

ctx = get_android_context()

lm = ctx.getSystemService(jclass("android.content.Context").LOCATION_SERVICE)

loc = lm.getLastKnownLocation("gps")

if loc and on_result:

on_result((loc.getLatitude(), loc.getLongitude()))

elif on_result:

on_result(None)

except Exception:

if on_result:

on_result(None)

@staticmethod

def _ios_get(on_result: Optional[Callable] = None, **options: Any) -> None:

try:

from rubicon.objc import ObjCClass

lm = ObjCClass("CLLocationManager").alloc().init()

lm.requestWhenInUseAuthorization()

lm.startUpdatingLocation()

except Exception:

if on_result:

on_result(None)