public IHttpActionResult DebitAccount(BalanceAdjustment data)
{
if (data.Amount <= 0)
{
return(Content(HttpStatusCode.BadRequest, "Cannot debit negative amount"));
}
var studentInDb = _context.Students.SingleOrDefault(s => s.Id == data.Student);
if (studentInDb == null)
{
return(Content(HttpStatusCode.NotFound, "Student not found"));
}
if (studentInDb.AccountBalance < data.Amount)
{
return(Content(HttpStatusCode.BadRequest, "Insufficient Funds"));
}
studentInDb.AccountBalance -= data.Amount;
_context.SaveChanges();
return(Ok("Account debited"));
}
private IRestResponse DebitMoney(BalanceAdjustment dataToDebitMoney)
{
dataToDebitMoney.Type = TransactionType.Debit.ToString();
var postAccountEndpoint = $"{this.BASE_ENDPOINT}/api/Account";
var client = new RestClient(postAccountEndpoint);
var requestOrigin = new RestRequest(Method.POST);
requestOrigin.AddHeader("content-type", "application/json");
requestOrigin.AddParameter(
"application/json",
JsonConvert.SerializeObject(dataToDebitMoney),
ParameterType.RequestBody
);
var responseOrigin = client.Execute(requestOrigin);
if (responseOrigin.StatusCode == System.Net.HttpStatusCode.InternalServerError)
{
responseOrigin = this.RetryRequest(client, requestOrigin, 5);
}
return(responseOrigin);
}
public void MakeFinancialTransfer(BalanceAdjustment originData, BalanceAdjustment destinationData)
{
var originResponse = this.DebitMoney(originData);
Console.WriteLine(originResponse?.ErrorMessage);
if (originResponse.StatusCode != System.Net.HttpStatusCode.OK)
{
throw new Exception($"Service Unavailable, try again later | {originResponse?.Content}");
}
var destinationResponse = this.CreditMoney(destinationData);
if (destinationResponse.StatusCode != System.Net.HttpStatusCode.OK)
{
this.RollBackTransactionAndAbortProcess(originData, destinationResponse.Content);
}
}
private static (BalanceAdjustment, BalanceAdjustment) BuildOriginAndDestinationData(Transaction transactionOrder)
{
var originData = new BalanceAdjustment
{
AccountNumber = transactionOrder.TransactionRequest.AccountOrigin,
Type = TransactionType.Debit.ToString(),
Value = transactionOrder.TransactionRequest.Value
};
var destinationData = new BalanceAdjustment
{
AccountNumber = transactionOrder.TransactionRequest.AccountDestination,
Type = TransactionType.Credit.ToString(),
Value = transactionOrder.TransactionRequest.Value
};
return(originData, destinationData);
}
private void RollBackTransactionAndAbortProcess(BalanceAdjustment originData, string error)
{
this.CreditMoney(originData);
throw new Exception($"Transaction Cancelled: {error}");
}
