import 'package:fforte/screens/addCam/exceptions/location_disabled_exception.dart';
import 'package:fforte/screens/addCam/exceptions/location_forbidden_exception.dart';
import 'package:fforte/screens/excursion/exceptions/need_always_location_exception.dart';
import 'package:geolocator/geolocator.dart';

class GeolocatorService {
  // determine live position with checks for denied permission and turned off location service
  static Future<Position> deteterminePosition({bool alwaysOnNeeded = false}) async {
    bool locationEnabled;
    LocationPermission permissionGiven;

    locationEnabled = await Geolocator.isLocationServiceEnabled();
    if (!locationEnabled) {
      throw LocationDisabledException();
    }

    permissionGiven = await Geolocator.checkPermission();
    if (permissionGiven == LocationPermission.denied) {
      permissionGiven = await Geolocator.requestPermission();
      if (permissionGiven == LocationPermission.denied || permissionGiven == LocationPermission.deniedForever) {
        throw LocationForbiddenException();
      }
    }

    if (alwaysOnNeeded && permissionGiven != LocationPermission.always) {
      throw NeedAlwaysLocation();
    }
    
      return await Geolocator.getCurrentPosition();
  }

  static Future<bool> alwaysPositionEnabled() async {
    LocationPermission permissionGiven = await Geolocator.checkPermission();
    bool locationEnabled = await Geolocator.isLocationServiceEnabled();

    if (permissionGiven == LocationPermission.always || !locationEnabled) {
      return true;
    } else {
      return false;
    }
  }
}