public virtual void ApplyCoupon(Coupon coupon, Tutor tutor)
{
if (coupon.CanApplyCoupon())
{
var userCoupon = UserCoupon.SingleOrDefault(w => w.Tutor.Id == tutor.Id && w.UsedAmount < w.Coupon.AmountOfUsePerUser);
if (userCoupon != null)
{
throw new DuplicateRowException();
}
var p = new UserCoupon(this, coupon, tutor);
if (!_userCoupon.Add(p))
{
throw new DuplicateRowException();
}
AddEvent(new ApplyCouponEvent(p));
//{
// _userCoupon.Remove(p);
// _userCoupon.Add(p);
//}
}
//if (coupon.Expiration.GetValueOrDefault(DateTime.MaxValue) < DateTime.UtcNow)
//{
// throw new ArgumentException("invalid coupon");
//}
//if (AmountOfUsers.HasValue && AmountOfUsers.Value <= _userCoupon.Count)
//{
// throw new OverflowException();
//}
}
protected bool Equals(UserCoupon other)
{
return(Equals(User.Id, other.User.Id) &&
Equals(Tutor.Id, other.Tutor.Id) &&
Equals(Coupon.Id, other.Coupon.Id));
}
