public static void OnTransactionConfirmed(JToken jsonParams)
{
TransactionConfirmedModel model = jsonParams.ToObject <TransactionConfirmedModel>();
using (DBEntities dbe = new DBEntities())
{
InvoicePayment payment = dbe.InvoicePayment.Include("Invoice").Include("Invoice.CreatedBy").SingleOrDefault(p => p.Address == model.Address && p.CurrencyCode == model.CurrencyCode);
if (payment != null)
{
double amountRequired = GetAmountRequired(payment.Invoice.FiatAmount, (double)payment.ExchangeRate, model.CurrencyCode);
if (model.Amount >= amountRequired)
{
payment.Invoice.State = (int)InvoiceState.TRANSACTION_CONFIRMED;
payment.Invoice.TransactionId = model.TXID;
payment.Invoice.DateReceived = DateTime.Now;
dbe.SaveChanges();
// send mail
EmailManager.SendMailToPaymentReciever(payment.Invoice, model);
EmailManager.SendMailToPaymentSender(payment.Invoice, model);
}
else
{
var transactionTime = DateTimeOffset.FromUnixTimeSeconds(model.Timestamp).UtcDateTime;
// Special case: if the transaction is less that 3 minutes late, previous exchange rate is still alowed
if (payment.Invoice.ExchangeRateSetTime != null && transactionTime.Subtract(payment.Invoice.ExchangeRateSetTime.Value).TotalMinutes < 3)
{
double previousAmountRequired = GetAmountRequired(payment.Invoice.FiatAmount, (double)payment.PreviousExchangeRate, model.CurrencyCode);
if (model.Amount >= previousAmountRequired)
{
payment.Invoice.State = (int)InvoiceState.TRANSACTION_SEEN;
payment.Invoice.TransactionId = model.TXID;
dbe.SaveChanges();
}
}
}
}
}
}
public static void SendMailToPaymentSender(Invoice invoice, TransactionConfirmedModel confirmation)
{
string url = $"https://live.blockcypher.com/{confirmation.CurrencyCode.ToLower()}/tx/{confirmation.TXID}";
string subject = $"CryptoMail - outcoming payment to {invoice.CreatedBy.Email} confirmed";
string body = System.IO.File.ReadAllText("wwwroot/web-api-static/templates/email/paymentConfirmationSender.html");
body = body.Replace("{Title}", subject)
.Replace("{Reciever}", invoice.CreatedBy.Email)
.Replace("{Invoice}", invoice.Name)
.Replace("{AmountFiat}", invoice.FiatAmount.ToString())
.Replace("{CurrencyFiat}", invoice.FiatCurrencyCode)
.Replace("{AmountCrypto}", confirmation.Amount.ToString())
.Replace("{CurrencyCrypto}", confirmation.CurrencyCode)
.Replace("{TargetAddressCrypto}", confirmation.Address)
.Replace("{TransactionTimestamp}", invoice.DateReceived.ToString())
.Replace("{BlockchainUrl}", $"<a href=\"{url}\">{url}</a>");
string attachment = !string.IsNullOrEmpty(invoice.File) ? $"{invoice.File}|{invoice.FileName}|{invoice.FileMime}" : "";
EmailSender sender = new EmailSender(_configuration);
Email email = sender.CreateEmailEntity("*****@*****.**", invoice.Recipient, body, subject, attachment);
sender.AddEmailToQueue(email);
}