public async Task <ActionResult <CouponDto> > GetCoupon(int couponID)
{
var coupon = await couponRepository.GetCouponAsync(couponID);
var dtoToReturn = mapper.Map <CouponDto>(coupon);
return(Ok(dtoToReturn));
}
public async Task ExecuteAsync(ApplyCouponCommand message, CancellationToken token)
{
var coupon = await _couponRepository.GetCouponAsync(message.Coupon, token);
var tutor = await _tutorRepository.LoadAsync(message.TutorId, token);
if (coupon is null)
{
throw new ArgumentException("invalid coupon");
}
if (coupon.Tutor != null && coupon.Tutor.Id != message.TutorId)
{
throw new ArgumentException("invalid coupon");
}
var user = await _userRepository.LoadAsync(message.UserId, token);
user.ApplyCoupon(coupon, tutor);
var tutorPrice = tutor.Price.Price;
message.NewPrice = Coupon.CalculatePrice(coupon.CouponType, tutorPrice, coupon.Value);
}
public async Task <ActionResult <IEnumerable <CouponUserDto> > > GetCouponsOfUser([FromQuery] CouponUserDtoParameter parameter)
{
Guid userID = new Guid(User.FindFirst(ClaimTypes.NameIdentifier)?.Value);
if (!await userRepository.UserExistsAsync(userID))
{
return(NotFound("用户不存在!"));
}
IEnumerable <Coupon_User> result;
IQueryable <Coupon_User> queryable = couponRepository.GetIQueryableCouponUser()
.Include(c => c.Coupon);
DateTime now = DateTime.Now;
switch (parameter.Type)
{
case CouponsType.Available:
var coupons = await couponRepository.GetIQueryableCoupon().Include(c => c.Users).ThenInclude(u => u.Coupon).Where(c => c.StartTime <= now && c.EndTime >= now && !c.IsDeleted).OrderBy(c => c.Id).ToListAsync();
List <Coupon_User> couponUsers = new(16);
foreach (var coupon in coupons)
{
var u = coupon.Users.Where(u => u.UserID.Equals(userID))
.FirstOrDefault();
if (u != null)
{
couponUsers.Add(u);
}
else
{
couponUsers.Add(new Coupon_User
{
UserID = userID,
CouponID = coupon.Id,
Coupon = await couponRepository.GetCouponAsync(coupon.Id),
RecievedCount = 0,
RemainedCount = 0
});
}
}
result = couponUsers;
break;
case CouponsType.Expired:
result = await queryable.Where(c => c.UserID.Equals(userID) &&
c.Coupon.EndTime < now &&
!c.Coupon.IsDeleted)
.ToListAsync();
break;
case CouponsType.Owned:
result = await queryable.Where(c => c.UserID.Equals(userID) &&
c.Coupon.StartTime <= now &&
c.Coupon.EndTime >= now)
.ToListAsync();
break;
default:
throw new ArgumentOutOfRangeException(nameof(parameter.Type));
}
var dtoToReturn = mapper.Map <IEnumerable <CouponUserDto> >(result);
return(Ok(dtoToReturn));
}