getCountriesByListOfCodes static method

Future<List<Country>> getCountriesByListOfCodes(
  1. List<String> codes, {
  2. CountryFilter? filter,
})

Search by list of ISO 3166-1 2-letter or 3-letter country codes: ["Ind", "col", "ru"]

Future<List<Country>> getCountriesByListOfCodes(){
 try{
   List<Country> result = CountryProvider.getCountriesByListOfCodes(["Ind", "col", "ru"]);
   return result;
  } catch(error) {
   return null;
 }
}

Implementation

static Future<List<Country>> getCountriesByListOfCodes(List<String> codes,
    {CountryFilter? filter}) async {
  if (codes.isNotEmpty) {
    final uri = "$_baseUrl" +
        Constants.countriesByListOfCodes +
        codes.toFormattedString! +
        "&&" +
        (filter.toFormattedUri != ""
            ? filter.toFormattedUri.substring(1, filter.toFormattedUri.length)
            : '');
    // print(uri);
    var response = await _client.get(Uri.parse(uri));

    if (response.statusCode == 200) {
      var countries = List<Country>.from(jsonDecode(response.body)
          .map((x) => x != null ? Country.fromJson(x) : null));
      return countries;
    }
    throw new Exception(
        "No country found. Please check if https://restcountries.eu is avialable.");
  } else {
    throw Exception("Country code can not be empty");
  }
}