public async Task <PendingPayment> HandlePaymentCallback(PaymentConfirmDto dto)
{
SignedPaymentInfo signed = new SignedPaymentInfo(dto.data, dto.signature);
string id = LiqPay.GetOrderId(signed);
if (!PendingPayments.ContainsKey(id))
{
throw new NotFoundException("payment with such id");
}
if (!LiqPay.IsSucceed(signed))
{
throw new ValidationException();
}
PendingPayment payment = PendingPayments[id];
if (!LiqPay.IsPaymentAuthorized(signed, payment.PaymentInfo))
{
throw new UnauthorizedAccessException();
}
foreach (OrderEntity order in payment.PaidOrders)
{
await OrderRepo.MarkPaid(order.Id);
}
return(payment);
}
private async void InitPreload()
{
string preloadHTML = "<html>" +
"<style>" +
"#loader {" +
"border: 1.5vh solid #67A93D;" +
"border-left : 1.5vh solid #FFFFFF;" +
"border-radius: 50%;" +
"margin-top : 45vh;" +
"width: 10vh;" +
"height: 10vh;" +
"animation: spin 2s linear infinite;" +
"}" +
"@keyframes spin {" +
"0% { transform: rotate(0deg); }" +
"100% { transform: rotate(360deg); }" +
"}" +
"</style>" +
"<body><center><div id='loader'></div></center></body>" +
"</html>";
LoadData(preloadHTML, "text/html", "UTF-8");
RestClient client = new RestClient(Constants.BASE_SERVER_ADDRESS + GET_PAYMENT_FORM_ENDPOINT);
RestRequest request = new RestRequest(Method.GET);
request.AddParameter(LOGIN_PARAMETER_NAME, BotService.CredentialsService.Credentials.Login);
IRestResponse response = await client.ExecuteAsync(request);
SignedPaymentInfo paymentInfo = JsonConvert.DeserializeObject <SignedPaymentInfo>(response.Content);
LoadForm(paymentInfo);
}
public bool IsSucceed(SignedPaymentInfo payment)
{
byte[] dataBytes = Convert.FromBase64String(payment.Data);
string data = Encoding.UTF8.GetString(dataBytes);
PaymentStatusDto result = JsonConvert.DeserializeObject <PaymentStatusDto>(data);
return(result.Status == SUCCESS_STATUS_VALUE);
}
public string GetOrderId(SignedPaymentInfo payment)
{
byte[] jsonBytes = Convert.FromBase64String(payment.Data);
string json = Encoding.UTF8.GetString(jsonBytes);
LiqPayPaymentInfo liqPayPayment = JsonConvert.DeserializeObject <LiqPayPaymentInfo>(json);
return(liqPayPayment.OrderId);
}
public bool IsPaymentAuthorized(SignedPaymentInfo payment, SignedPaymentInfo stored)
{
string calculatedSignature = GetSignature(payment.Data);
string storedSignature = GetSignature(payment.Data);
string data = Encoding.UTF8.GetString(Convert.FromBase64String(stored.Data));
LiqPayPaymentInfo info = JsonConvert.DeserializeObject <LiqPayPaymentInfo>(data);
//DateTime exp = DateTime.Parse(info.Expired);
return(calculatedSignature == payment.Signature && calculatedSignature == storedSignature); // && exp > DateTime.UtcNow;
}
private void LoadForm(SignedPaymentInfo paymentInfo)
{
string html = "<html>" +
"<style> #form { margin-top : 40vh; } </style>" +
"<body><center>" +
"<form id='form' method='POST' action='https://www.liqpay.ua/api/3/checkout' accept-charset='utf-8'>" +
$"<input type='hidden' id='data' name='data' value='{paymentInfo.Data}'/>" +
$"<input type='hidden' id='sign' name='signature' value='{paymentInfo.Signature}'/>" +
"<input type='image' src='http://static.liqpay.ua/buttons/p1ru.radius.png'/>" +
"</form>" +
"</center></body>" +
"</html>";
LoadData(html, "text/html", "UTF-8");
}
public async Task <SignedPaymentInfo> GetPaymentForm(string login)
{
IEnumerable <OrderEntity> oldUnpayedOrders = await GetOldUnpayedOrders(login);
if (oldUnpayedOrders.Count() == 0)
{
throw new NotFoundException("orders to pay for");
}
int tax = GetTaxAmount(oldUnpayedOrders);
string id = Guid.NewGuid().ToString();
PaymentPrepareModel paymentPrepare = new PaymentPrepareModel(id, tax, CALLBACK_URL);
SignedPaymentInfo signedPayment = LiqPay.CreatePayment(paymentPrepare);
PendingPayment pending = new PendingPayment(id, signedPayment, oldUnpayedOrders);
PendingPayments.Add(id, pending);
return(signedPayment);
}
public PendingPayment(string id, SignedPaymentInfo paymentInfo, IEnumerable <OrderEntity> paidOrders)
{
Id = id;
PaymentInfo = paymentInfo;
PaidOrders = paidOrders;
}