private async void NameLoginWebView_NavigationStarting(WebView sender, WebViewNavigationStartingEventArgs args)
{
var uri = args.Uri;
if (uri.ToString().StartsWith(this._oidcOptions.RedirectUri))
{
var code = OidcOptions.GetCode(uri.Query);
var httpClient = new HttpClient();
var tokenParams = new FormUrlEncodedContent(this._oidcOptions.BuildTokenParams(code));
var tokenReponse = await httpClient.PostAsync(this._oidcOptions.TokenEndpoint, tokenParams);
var jsonText = await tokenReponse.Content.ReadAsStringAsync();
//todo:http://openid.net/specs/openid-connect-core-1_0.html#TokenResponseValidation
var file = await ApplicationData.Current.LocalFolder.CreateFileAsync("user-token.json", CreationCollisionOption.ReplaceExisting);
using (var fileStream = await file.OpenStreamForWriteAsync())
{
var jsonBytes = Encoding.UTF8.GetBytes(jsonText);
fileStream.Write(jsonBytes, 0, jsonBytes.Length);
}
if (this.Frame.CanGoBack)
{
this.Frame.GoBack();
}
}
}
