public async Task Unsubscribe(params string[] mediaNames) { if (mediaNames == null || mediaNames.Length < 1) { await Context.Channel.SendMessageAsync("Nothing to do."); } var notificationEndpointNotifierIdentifier = GetNotificationEndpointNotifierIdentifier(Context); var deleteSubscriptionInstructions = mediaNames .Select(mediaName => new DeleteSubscriptionInstruction(mediaName, notificationEndpointNotifierIdentifier)) .ToList(); // TODO: when creating facade call this unscubscribe var result = await _subscriptionService.DeleteSubscriptions(deleteSubscriptionInstructions, CancellationToken.None); var message = result.Any(r => r.IsFailure) ? "Something went wrong." : "Successfully unsubscribed."; await Context.Channel.SendMessageAsync(message); }