public IEnumerable <IDaySummary> LoadData()
        {
            _appSettings = LoadSettings();
            string data = ReadFile(_appSettings.DataFileLocation);

            if (string.IsNullOrEmpty(data))
            {
                return(new List <IDaySummary>());
            }
            return(_serializerService.FromJson <List <IDaySummary> >(ReadFile(_appSettings.DataFileLocation)));
        }