public Task <string> GetUpdateUrlAsync(CupContentType type, [NotNull] string id)
{
var information = GetInformation(type, id);
if (information == null || information._updateUrl != null)
{
return(Task.FromResult(information?._updateUrl));
}
return(_installationUrlTaskCache.Get(async() => {
try {
var url = $"{information.SourceRegistry}/{type.ToString().ToLowerInvariant()}/{id}/get";
using (var client = new CookieAwareWebClient()) {
var updateUrl = await client.GetFinalRedirectAsync(url);
if (updateUrl != null)
{
information._updateUrl = updateUrl;
}
return updateUrl;
}
} catch (Exception e) {
NonfatalError.NotifyBackground("Can’t download an update", e);
return null;
}
}, type, id));
}
protected override async Task <string> GetRedirectOverrideAsync(string url, CookieAwareWebClient client, CancellationToken cancellation)
{
if (IsYouTubeWrapped(url))
{
return(new Uri(url, UriKind.RelativeOrAbsolute).GetQueryParam("q"));
}
if (IsFacebookWrapped(url))
{
return(new Uri(url, UriKind.RelativeOrAbsolute).GetQueryParam("u"));
}
return(await client.GetFinalRedirectAsync(url));
}