ResolveCountryAndCityNameAsync

ResolveCountryAndCityNameAsync.cs

        public async Task<Tuple<string, string, string, string>> ResolveCountryAndCityNameAsync(double latitude, double longitude, string appName)
        {
            var lat = latitude.ToString(CultureInfo.InvariantCulture).Replace(",", ".");
            var lon = longitude.ToString(CultureInfo.InvariantCulture).Replace(",", ".");

            var requestUri = $"http://nominatim.openstreetmap.org/reverse?format=xml&zoom=18&lat={lat}&lon={lon}&application={appName}";

            var client = new HttpClient();
            var resTask = client.GetStringAsync(requestUri);
            var res = await resTask;

            var resultDocument = XDocument.Parse(res);
            var addressElement = resultDocument.Root.Element("addressparts");
            var city = addressElement.Element("city").Value;
            var country = addressElement.Element("country").Value;
            var postalCode = addressElement.Element("postcode").Value;
            var state = addressElement.Element("state").Value;

            var result = new Tuple<string, string, string, string>(country, city, postalCode, state);
            return result;
        }