コード例 #1
0
        public async Task PayFee(Guid userId, Guid feeId, DateTime paymentDate)
        {
            var fee = await _feeRepository.GetById(feeId);

            if (fee == null)
            {
                throw new KeyNotFoundException($"Fee with id: {feeId} not found.");
            }
            if (fee.PaymentDate != null)
            {
                throw new InvalidOperationException($"Fee with id: {feeId} has already been paid.");
            }

            var feeList = (await _feeRepository.GetAll()).Where(x => x.OwnFeesId == fee.OwnFeesId).OrderBy(x => x.ExpirationDate);

            var previousFee = feeList.FirstOrDefault(x => x.ExpirationDate < fee.ExpirationDate);

            if (previousFee != null && previousFee.PaymentDate == null)
            {
                throw new InvalidOperationException($"The previous fee must be paid.");
            }

            fee.PaymentDate = paymentDate;
            await _feeRepository.Update(fee);

            await _feeRepository.CommitAsync();
        }