autoCompleteSearch method

Future<void> autoCompleteSearch(String place)

Fetches the place autocomplete list with the query place.

Implementation

Future<void> autoCompleteSearch(String place) async {
  place = place.replaceAll(" ", "+");

  final countries = widget.countries;

  // Currently, you can use components to filter by up to 5 countries. from https://developers.google.com/places/web-service/autocomplete
  String regionParam = countries.isNotEmpty == true
      ? "&components=country:${countries.sublist(0, min(countries.length, 5)).join('|country:')}"
      : "";

  var endpoint =
      "https://maps.googleapis.com/maps/api/place/autocomplete/json?input=$place$regionParam&key=${widget.apiKey}&sessiontoken=$sessionToken";

  if (locationResult != null) {
    endpoint += "&location=${locationResult?.latLng.latitude},"
        "${locationResult?.latLng.longitude}";
  }

  try {
    final response = await http.get(
      Uri.parse(endpoint),
    );
    logger.i(endpoint);
    logger.v(response.body);
    if (response.statusCode == 200) {
      Map<String, dynamic> data = jsonDecode(response.body);
      List<dynamic> predictions = data['predictions'];

      List<RichSuggestion> suggestions = [];

      if (predictions.isEmpty) {
        AutoCompleteItem aci = AutoCompleteItem();
        aci.text = S.of(context).no_result_found;
        aci.offset = 0;
        aci.length = 0;

        suggestions.add(RichSuggestion(aci, () {}));
      } else {
        for (dynamic t in predictions) {
          AutoCompleteItem aci = AutoCompleteItem();

          aci.id = t['place_id'];
          aci.text = t['description'];
          aci.offset = t['matched_substrings'][0]['offset'];
          aci.length = t['matched_substrings'][0]['length'];

          suggestions.add(
            RichSuggestion(
              aci,
              () {
                decodeAndSelectPlace(aci.id);
              },
            ),
          );
        }
      }

      displayAutoCompleteSuggestions(suggestions);
    }
  } catch (error) {
    logger.e(error);
    logger.i(endpoint);
  }
}