/// <summary>
/// Perform reverse geocode function (coordinates to location string).
/// </summary>
/// <param name="loc">The location's geocoordinates</param>
/// <param name="radius">(Optional) result accuracy radius</param>
/// <returns>The string description of the location</returns>
public async Task <string> ReverseGeocode(GeoCoordinate loc, double radius = 100)
{
// Create the request
var requestResult = await CURL.GET("https://reverse.geocoder.api.here.com/6.2/reversegeocode.json",
new Dictionary <string, string> {
{ "app_id", apiKey.AppId },
{ "app_code", apiKey.AppCode },
{ "prox", loc.Latitude + "," + loc.Longitude + "," + radius },
{ "mode", "retrieveAddresses" },
{ "maxresults", "1" }
});
// Send the request and extract the location string
try
{
dynamic resultObj = JsonConvert.DeserializeObject(requestResult);
var view = resultObj.Response.View[0];
var res = view.Result[0];
return(res.Location.Address.Label);
}
catch (JsonException ex)
{
logger?.LogError("Reverse geocode error: " + ex.Message);
return(null);
}
}
/// <summary>
/// Perform geocode function (location string to coordinates).
/// </summary>
/// <param name="query">The location string</param>
/// <returns>The geocoordinates of the location</returns>
public async Task <GeoCoordinate> Geocode(string query)
{
// Clean query
query = HttpUtility.UrlEncode(query, Encoding.UTF8);
// Create the request
var requestResult = await CURL.GET("https://geocoder.api.here.com/6.2/geocode.json",
new Dictionary <string, string> {
{ "app_id", apiKey.AppId },
{ "app_code", apiKey.AppCode },
{ "searchtext", query }
});
// Send the request and extract geocoordinates
try
{
dynamic resultObj = JsonConvert.DeserializeObject(requestResult);
var view = resultObj.Response.View;
var loc = view[0].Result[0].Location.DisplayPosition;
return(new GeoCoordinate
{
Latitude = loc.Latitude,
Longitude = loc.Longitude
});
}
catch (JsonException ex)
{
logger?.LogError("Geocode error: " + ex.Message);
return(GeoCoordinate.Unknown);
}
}
