GoogleMapsAPI_helpers.dart

Future<String> getLocalityNameFromLocation(BuddyLocation location) async {
  GoogleMapsGeocoding geo = GoogleMapsGeocoding(apiKey: "API_KEY");
  
  GeocodingResponse geoCodingResponse = await geo.searchByLocation(location.gMapslocation);

  List<AddressComponent> results = geoCodingResponse.results
      .expand((result) => result.addressComponents
          .where((result) => result.types.contains('sublocality_level_2')))
      .toList();

  AddressComponent searchResultAddr = results.first;
  return searchResultAddr.shortName;
}

Future<gMapsWebPlaces.PlaceDetails> getPlaceFromPlaceId(String placeId) async {
  gMapsWebPlaces.GoogleMapsPlaces places = gMapsWebPlaces.GoogleMapsPlaces(apiKey: "API_KEY");
  
  gMapsWebPlaces.PlacesDetailsResponse placeIdResponse =
      await places.getDetailsByPlaceId(placeId);
  return placeIdResponse.result;
}

Future<List<BuddyLocation>> pointsFromCurrentLocationToPrediction(
    BuildContext context, gMapsWebPlaces.Prediction prediction) async {
  DatabaseService databaseService = DatabaseService();
  gMapsWebDirections.GoogleMapsDirections directions =
      gMapsWebDirections.GoogleMapsDirections(
          apiKey: "API_KEY");
  gMapsWebDirections.Location currentLocation =
      Provider.of<User>(context).location.gMapslocation;
  gMapsWebPlaces.PlaceDetails destinationPlace =
      await databaseService.getPlaceFromPlaceId(prediction.placeId);
  gMapsWebDirections.Location destinationLocation =
      destinationPlace.geometry.location;

  gMapsWebDirections.DirectionsResponse directionResponse = await directions
      .directionsWithLocation(currentLocation, destinationLocation);

  List<LatLng> _listLatLngPoints =
      //TODO explore why I'm taking only the first one here??
      decodePolyline(directionResponse.routes[0].overviewPolyline.points);
  List<BuddyLocation> listBuddyLocations = _listLatLngPoints
      .map((point) => BuddyLocation.fromData(point.latitude, point.longitude))
      .toList();
  return listBuddyLocations;
}