public async Task<Photo> InitiateGeoFetch()
{
if (this._geo == null)
{
this._geo = await App.flickr.GetGeoInfo(id);
}
return this;
}
public async Task<GeoInfo> GetGeoInfo(string photoId)
{
//https://api.flickr.com/services/rest/?method=flickr.photos.geo.getLocation&api_key=dba3355dc8c8dd0fa6b7a45ce2a44db3&photo_id=22128905835&format=json&nojsoncallback=1&auth_token=72157659832560651-376ab699108fe73b&api_sig=9f500b727d3e2585b397d96f966fbef0
Dictionary<string, string> parameters = new Dictionary<string, string>();
parameters.Add("method", "flickr.photos.geo.getLocation");
parameters.Add("photo_id", photoId);
parameters.Add("api_key", _consumerkey);
//parameters.Add("format", "json");
//parameters.Add("nojsoncallback", "1");
parameters.Add("auth_token", _authtoken);
string sig = Utility.AuthCalculateSignature(_consumersecret, parameters);
parameters.Add("api_sig", sig);
string webrequest = _restserviceurl + "?" + Utility.BuildString(parameters);
HttpClient proxy = new HttpClient();
HttpResponseMessage response = await proxy.GetAsync(webrequest);
string webresponse = await response.Content.ReadAsStringAsync();
XDocument doc = XDocument.Parse(webresponse);
var rsp = doc.Descendants(XName.Get("rsp")).FirstOrDefault();
GeoInfo data = new GeoInfo();
if ((string)rsp.Attribute("stat") == "ok")
{
var element = doc.Descendants(XName.Get("location")).FirstOrDefault();
data.latitude = Convert.ToDouble((string)element.Attribute("latitude"));
data.longitude = Convert.ToDouble((string)element.Attribute("longitude"));
data.accuracy = Convert.ToInt32((string)element.Attribute("accuracy"));
data.locality = doc.Descendants(XName.Get("locality")).FirstOrDefault().Value;
data.isValid = true;
}
return data;
}
