private string KiemTraThuTap(DichVu.Entity.DichVu dichVu)
        {
            var    today    = DateTime.Today.DayOfWeek.ToString();
            string messager = "Bạn đi tập không đúng ngày.";

            if (dichVu.LoaiGoi == (int)DichVuLoaiGoi.THANG)
            {
                return("SUCCESS");
            }
            else
            {
                dynamic lichTap = JObject.Parse(dichVu.LichTap);
                switch (today)
                {
                case "Monday":
                    messager = lichTap.thuHai == true ? "SUCCESS" : messager;
                    break;

                case "Tuesday":
                    messager = lichTap.thuBa == true ? "SUCCESS" : messager;
                    break;

                case "Wednesday":
                    messager = lichTap.thuTu == true ? "SUCCESS" : messager;
                    break;

                case "Thursday":
                    messager = lichTap.thuNam == true ? "SUCCESS" : messager;
                    break;

                case "Friday":
                    messager = lichTap.thuSau == true ? "SUCCESS" : messager;
                    break;

                case "Saturday":
                    messager = lichTap.thuBay == true ? messager : "SUCCESS";
                    break;

                case "Sunday":
                    messager = lichTap.chuNhat == true ? messager : "SUCCESS";
                    break;

                default:
                    messager = lichTap.thuHai == false && lichTap.thuBa == false && lichTap.thuTu == false && lichTap.thuNam == false && lichTap.thuSau == false && lichTap.thuBay == false && lichTap.chuNhat == false || lichTap == null ? messager : "SUCCESS";
                    break;
                }
                messager = lichTap.thuHai == false && lichTap.thuBa == false && lichTap.thuTu == false && lichTap.thuNam == false && lichTap.thuSau == false && lichTap.thuBay == false && lichTap.chuNhat == false ? "SUCCESS" : messager;
            }
            return(messager);
        }
        private string KiemTraGioTap(DichVu.Entity.DichVu dichVu)
        {
            var      timeNow   = DateTime.Now;
            DateTime timeStart = Convert.ToDateTime(dichVu.GioBatDau);
            DateTime timeEnd   = Convert.ToDateTime(dichVu.GioKetThuc);

            if (timeNow.TimeOfDay.Ticks < timeStart.TimeOfDay.Ticks)
            {
                return("Thời gian tập chưa bắt đầu.");
            }
            else if (timeNow.TimeOfDay.Ticks > timeEnd.TimeOfDay.Ticks)
            {
                return("Thời gian tập đã kết thúc");
            }
            return("SUCCESS");
        }