public List <CouponDTO> Calculate(CartRequest cart)
{
var couponNos = DomainRegistry.CouponNoRepository().GetNotUsedByUserId(cart.UserId);
var buyProductIds = cart.CartItems.Select(ent => ent.ProductId);
List <CouponDTO> couponDtos = new List <CouponDTO>();
foreach (var couponNo in couponNos)
{
if (couponNo.IsUsed)
{
continue;
}
var coupon = DomainRegistry.CouponRepository().GetByIdentity(couponNo.CouponId);
if (coupon.ContainsProductIds.Count == 0 || coupon.ContainsProductIds.Any(ent => buyProductIds.Any(e => e == ent)))
{
couponDtos.Add(new CouponDTO
{
CanUse = couponNo.IsUsed,
ExpiryDate = coupon.ExpiryDate,
ID = couponNo.ID,
Name = coupon.Name,
Value = coupon.Value
});
}
}
return(couponDtos);
}
public CouponDTO GetCoupon(string id)
{
var couponNo = DomainRegistry.CouponNoRepository().GetByIdentity(id);
if (couponNo == null)
{
return(null);
}
var coupon = DomainRegistry.CouponRepository().GetByIdentity(couponNo.CouponId);
return(new CouponDTO
{
CanUse = couponNo.IsUsed,
ExpiryDate = coupon.ExpiryDate,
ID = coupon.ID,
Name = coupon.Name,
Value = coupon.Value
});
}
public Result IsCouponCanUse(string id, DateTime orderTime)
{
var couponNo = DomainRegistry.CouponNoRepository().GetByIdentity(id);
if (couponNo.IsUsed)
{
return(Result.Fail("对不起，该礼券已经被使用"));
}
var coupon = DomainRegistry.CouponRepository().GetByIdentity(couponNo.CouponId);
if (coupon == null)
{
return(Result.Fail("对不起，该礼券已失效"));
}
if (coupon.ExpiryDate < orderTime)
{
return(Result.Fail("对不起，该礼券已经过期"));
}
return(Result.Success());
}