public IHttpActionResult Get(string id = "")
        {
            var logger = NLog.LogManager.GetCurrentClassLogger();

            Regex regex = new Regex("[0-9]+");

            try
            {
                // Get all the countries
                if (id.Length == 0)
                {
                    return(Json(Lookups.CountryKeys()));
                }
                // Lookup by country code
                else if (regex.IsMatch(id))
                {
                    return(Json <string>(Lookups.CountryKeys()[Convert.ToInt32(id)]));
                }
                else
                {
                    return(Json <int>((int)(Country)Enum.Parse(typeof(Country), id)));
                }
            }
            catch (KeyNotFoundException e)
            {
                logger.Error(e.Message);
                return(BadRequest("Lookup failed."));
            }
            catch (Exception e)
            {
                logger.Error(e.Message);
                return(BadRequest(e.Message));
            }
        }