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feat realtime position stream #22

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feat realtime position stream #22

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17 changes: 17 additions & 0 deletions kuama_position/lib/src/blocs/position_bloc.dart
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Original file line number Diff line number Diff line change
Expand Up @@ -52,6 +52,23 @@ class PositionBloc extends Bloc<_PositionBlocEvent, PositionBlocState> {
/// There is no need to call it if you weren't listening to the realtime position.
void unTrack() => add(const _UnTrackPositionBloc());

/// !!! WARNING !!! It is not stable. It could get breakages
late Stream<GeoPoint> onRealtimePositionChanges = _createRealtimePositionStream();

Stream<GeoPoint> _createRealtimePositionStream() {
return Stream<GeoPoint>.multi((controller) {
final subscription = stream.listen((state) {
if (state is PositionBlocLocated) controller.addSync(state.currentPosition);
});
track();
controller.onCancel = () async {
unTrack();
await subscription.cancel();
controller.closeSync();
};
});
}

Future<void> _mapEventToState(_PositionBlocEvent event, Emitter<PositionBlocState> emit) async {
return event.map<Future<void>>(updateStatus: (event) {
return _mapStatusUpdate(emit, event.hasPermissionGranted, event.isServiceEnabled);
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32 changes: 32 additions & 0 deletions kuama_position/test/position_bloc_test.dart
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Expand Up @@ -352,4 +352,36 @@ void main() {
await bloc.close();
});
});

// TODO: Test realtimePosition method
// group('realtimePosition', () {
// test('1', () async {
// init(permission: EmissionType.alreadyHas, service: EmissionType.alreadyHas);
// bloc.emit(const PositionBlocIdle(
// lastPosition: null,
// hasPermission: true,
// isServiceEnabled: true,
// ));
//
// when(() => mockPositionService.getCurrentPosition()).thenAnswer((_) async {
// return const GeoPoint(0.0, 0.0);
// });
// when(() => mockPositionService.onPositionChanges).thenAnswer((_) async* {
// yield const GeoPoint(0.0, 0.0);
// });
//
// final sub1 = bloc.onRealtimePositionChanges.listen((event) {
// print('Listen');
// });
//
// final sub2 = bloc.onRealtimePositionChanges.listen((event) {
// print('Listen');
// });
//
// await Future.delayed(const Duration(seconds: 1), () {
// // sub1.cancel();
// sub2.cancel();
// });
// });
// });
}