public IActionResult OnlineSale([FromForm] GatewayOnlineSaleParams model)
{
_logger.LogInformation("API Online Sale: {@params}", model);
string apiKey = Request.Headers["Graft-Access-Key"];
if (string.IsNullOrWhiteSpace(apiKey))
{
return(Error(ErrorCode.InvalidApiKey));
}
string timestamp = Request.Headers["Graft-Access-Timestamp"];
if (string.IsNullOrWhiteSpace(timestamp))
{
return(Error(ErrorCode.InvalidApiKey));
}
string sign = Request.Headers["Graft-Access-Sign"];
if (string.IsNullOrWhiteSpace(sign))
{
return(Error(ErrorCode.InvalidApiKey));
}
model.PosSn = apiKey;
var res = _paymentService.PrepareOnlineSale(model, timestamp, sign);
return(Ok(res));
}
public GatewayOnlineSaleResult PrepareOnlineSale(GatewayOnlineSaleParams model, string timestamp, string sign)
{
_logger.LogInformation("API Prepare Online Sale: {@params}", model);
var terminal = _db.Terminal
.Where(t => t.SerialNumber == model.PosSn)
.Include(t => t.ServiceProvider)
.Include(t => t.Store).ThenInclude(t => t.Merchant)
.FirstOrDefault();
if (terminal == null)
{
throw new ApiException(ErrorCode.InvalidApiKey);
}
using (var hmac = new HMACSHA256(Encoding.ASCII.GetBytes(terminal.ApiSecret)))
{
string text = $"{timestamp}{terminal.SerialNumber}";
var hash = hmac.ComputeHash(Encoding.ASCII.GetBytes(text));
var signBytes = sign.HexStringToBytes();
if (!hash.ByteArrayCompare(signBytes))
{
throw new ApiException(ErrorCode.InvalidApiKey);
}
}
var payment = new Payment()
{
Id = Guid.NewGuid().ToString(),
TransactionDate = DateTime.UtcNow,
Status = PaymentStatus.New,
Terminal = terminal,
TerminalId = terminal.Id,
StoreId = terminal.StoreId,
ServiceProviderId = terminal.ServiceProviderId,
SaleAmount = model.SaleAmount,
SaleCurrency = model.SaleCurrency,
ExternalOrderId = model.ExternalOrderId,
CompleteUrl = model.CompleteUrl,
CancelUrl = model.CancelUrl,
CallbackUrl = model.CallbackUrl,
};
_cache.Set(payment.Id, payment, DateTimeOffset.Now.AddMinutes(_settings.PaymentTimeout));
var req = _context.HttpContext.Request;
var res = new GatewayOnlineSaleResult()
{
PaymentUrl = $"{req.Scheme}://{req.Host}/PaymentProcessor/PayCurrencySelect/{payment.Id}"
};
return(res);
}
