public async Task <Result> SubtractMoney(int counterpartyAccountId, PaymentCancellationData data, UserInfo user)
{
return(await GetCounterpartyAccount(counterpartyAccountId)
.Ensure(a => AreCurrenciesMatch(a, data), "Account and payment currency mismatch")
.Ensure(IsAmountPositive, "Payment amount must be a positive number")
.BindWithLock(_locker, a => Result.Success(a)
.BindWithTransaction(_context, account => Result.Success(account)
.Map(SubtractMoney)
.Map(WriteAuditLog))));
bool IsAmountPositive(CounterpartyAccount account) => data.Amount.IsGreaterThan(decimal.Zero);
async Task <CounterpartyAccount> SubtractMoney(CounterpartyAccount account)
{
account.Balance -= data.Amount;
_context.Update(account);
await _context.SaveChangesAsync();
return(account);
}
async Task <CounterpartyAccount> WriteAuditLog(CounterpartyAccount account)
{
var eventData = new CounterpartyAccountBalanceLogEventData(null, account.Balance);
await _auditService.Write(AccountEventType.CounterpartySubtract,
account.Id,
data.Amount,
user,
eventData,
null);
return(account);
}
}
private bool AreCurrenciesMatch(CounterpartyAccount account, PaymentCancellationData data) => account.Currency == data.Currency;
public async Task <IActionResult> SubtractCounterpartyAccount(int counterpartyAccountId, [FromBody] PaymentCancellationData cancellationData)
{
var(_, _, administrator, _) = await _administratorContext.GetCurrent();
var(isSuccess, _, error) = await _counterpartyAccountService.SubtractMoney(counterpartyAccountId,
cancellationData, administrator.ToUserInfo());
return(isSuccess
? NoContent()
: (IActionResult)BadRequest(ProblemDetailsBuilder.Build(error)));
}
