public static bool IsAllow(HttpContextBase httpContext)
        {
            var userIdentity = httpContext.User.Identity;

            if (userIdentity.IsAuthenticated == false)
            {
                return(false);
            }

            // If no configuration about Quiz Master,
            // then all users can be Quiz Master.
            var setting = JsonAppSettings.AsDictionary("QuizMaster");

            if (setting == null)
            {
                return(true);
            }

            using (var db = new QuizWebAppDb())
            {
                var userInfo = db.Users.Find(userIdentity.UserId());
                if (userInfo == null)
                {
                    return(false);
                }

                return
                    (setting["idProviderName"] == userInfo.IdProviderName &&
                     setting["name"] == userInfo.Name);
            }
        }
        //private static string _filteredLogsPath;


        public static async Task LoadAsync(string settingsPath)
        {
            Console.Write("Loading settings and verifying (or getting new) OAuth token");

            _settingsPath = settingsPath;

            var jsonFile = File.ReadAllText(settingsPath);

            _jsonAppSettings = JsonSerializer.Deserialize <JsonAppSettings>(jsonFile);

            await ValidateSettings();

            _originalLogsPath = Path.Combine(_jsonAppSettings.OutputPath, "original");
            //_filteredLogsPath = Path.Combine(_jsonAppSettings.OutputPath, "filtered");
            _ = Directory.CreateDirectory(_originalLogsPath);
            //_ = Directory.CreateDirectory(_filteredLogsPath);

            Console.WriteLine(" Done.");
        }