public async void GetPhotoSetListAsync(string userId)
{
string timestamp = DateTimeUtils.GetTimestamp();
string nonce = Guid.NewGuid().ToString().Replace("-", null);
string paramString = "oauth_nonce=" + nonce;
paramString += "&oauth_consumer_key=" + consumerKey;
paramString += "&oauth_signature_method=HMAC-SHA1";
paramString += "&oauth_timestamp=" + timestamp;
paramString += "&oauth_version=1.0";
paramString += "&oauth_token=" + AccessToken;
paramString += "&format=json&nojsoncallback=1";
paramString += "&user_id=" + userId;
paramString += "&method=flickr.photosets.getList";
string signature = GenerateSignature("GET", AccessTokenSecret, "https://api.flickr.com/services/rest/", paramString);
string requestUrl = "https://api.flickr.com/services/rest/?" + paramString + "&oauth_signature=" + signature;
HttpWebResponse response = await DispatchRequest("GET", requestUrl, null).ConfigureAwait(false);
using (StreamReader reader = new StreamReader(response.GetResponseStream()))
{
GetPhotoSetListExceptionEventArgs exceptionEvt = null;
if (response.StatusCode != HttpStatusCode.OK)
{
HandleHTTPException(response);
exceptionEvt = new GetPhotoSetListExceptionEventArgs();
exceptionEvt.UserId = userId;
GetPhotoSetListException.DispatchEvent(this, exceptionEvt);
return;
}
string jsonString = await reader.ReadToEndAsync().ConfigureAwait(false);
if (!TryHandleResponseException(jsonString, () => { GetPhotoSetListAsync(userId); }))
{
exceptionEvt = new GetPhotoSetListExceptionEventArgs();
exceptionEvt.UserId = userId;
GetPhotoSetListException.DispatchEvent(this, exceptionEvt);
return;
}
PhotoSetListEventArgs evt = new PhotoSetListEventArgs();
evt.UserId = userId;
evt.Response = jsonString;
PhotoSetListReturned.DispatchEvent(this, evt);
}
}
private void PhotoListReturned(object sender, PhotoSetListEventArgs e)
{
JObject json = JObject.Parse(e.Response);
JObject photosetJson = (JObject)json["photosets"];
bool canCreate = photosetJson["cancreate"].ToString().ParseBool();
int page = int.Parse(photosetJson["page"].ToString());
int perPage = int.Parse(photosetJson["perpage"].ToString());
int numTotal = int.Parse(photosetJson["total"].ToString());
PhotoSetList.Clear();
foreach (var ps in photosetJson["photoset"])
{
PhotoSet photoset = PhotoSetFactory.PhotoSetWithJObject((JObject)ps);
PhotoSetList.Add(photoset);
}
// Dispatch event
PhotoSetListUpdatedEventArgs args = new PhotoSetListUpdatedEventArgs();
args.CanCreate = canCreate;
args.Page = page;
args.PerPage = perPage;
args.TotalCount = numTotal;
args.UserId = e.UserId;
PhotoSetListUpdated.DispatchEvent(this, args);
}