import 'package:geolocator/geolocator.dart';

enum LocationAttachmentFailure {
  serviceDisabled,
  permissionDenied,
  unavailable,
}

class LocationAttachmentResult {
  final Position? position;
  final LocationAttachmentFailure? failure;

  const LocationAttachmentResult._({this.position, this.failure});

  const LocationAttachmentResult.success(Position value)
    : this._(position: value);

  const LocationAttachmentResult.failed(LocationAttachmentFailure value)
    : this._(failure: value);
}

class LocationAttachmentController {
  Future<LocationAttachmentResult> resolveCurrentPosition() async {
    try {
      if (!await Geolocator.isLocationServiceEnabled()) {
        return const LocationAttachmentResult.failed(
          LocationAttachmentFailure.serviceDisabled,
        );
      }
      var permission = await Geolocator.checkPermission();
      if (permission == LocationPermission.denied) {
        permission = await Geolocator.requestPermission();
      }
      if (permission == LocationPermission.denied ||
          permission == LocationPermission.deniedForever) {
        return const LocationAttachmentResult.failed(
          LocationAttachmentFailure.permissionDenied,
        );
      }
      final position = await Geolocator.getCurrentPosition(
        locationSettings: const LocationSettings(
          accuracy: LocationAccuracy.high,
        ),
      );
      return LocationAttachmentResult.success(position);
    } catch (_) {
      return const LocationAttachmentResult.failed(
        LocationAttachmentFailure.unavailable,
      );
    }
  }
}