/// <summary>
/// Redirect to Payment provider with the all needed parameters (Expecting validated data)
/// </summary>
/// <param name="ePayInfo"></param>
/// <param name="paymentMethod">method of payment supported methods:
/// ePayPayment | DirectCreditCard | FreeTransaction | DepositSlip
/// </param>
/// <param name="urlOk"></param>
/// <param name="urlCancel"></param>
/// <returns></returns>
private string EPayFacade(ePayQueryViewModel ePayInfo, string paymentMethod, string urlOk, string urlCancel)
{
List <KeyValuePair <string, string> > httpParameters = new List <KeyValuePair <string, string> >
{
new KeyValuePair <string, string>("URL_OK", urlOk),
new KeyValuePair <string, string>("URL_CANCEL", urlCancel)
};
switch (paymentMethod.ToUpper())
{
case "EPAYPAYMENT":
httpParameters.AddRange(EPayPayment(ePayInfo));
break;
case "DIRECTCREDITCARD":
httpParameters.AddRange(EPayDirectCreditCard(ePayInfo));
break;
case "FREETRANSACTION":
httpParameters.AddRange(FreeTransaction(ePayInfo));
break;
case "DEPOSITSLIP":
httpParameters.AddRange(DepositSlip(ePayInfo));
break;
default:
throw new NotSupportedException("Методът на плащане не се поддържа!");
}
// This line REDIRECTS to target page with the passed parameters
return(WebExtentions.CreatePaymentForm(httpParameters, ConfigurationManager.AppSettings["ePayUrl"]));
}
/// <summary>
/// Free Transaction The Payed amount goes to the receiver ePay micro account
/// </summary>
/// <param name="ePayInfo"></param>
/// <returns></returns>
private List <KeyValuePair <string, string> > FreeTransaction(ePayQueryViewModel ePayInfo)
{
string page = _paymentMethodsStrings[PaymentMethods.FreeTransaction];
return(new List <KeyValuePair <string, string> >
{
new KeyValuePair <string, string>("PAGE", page),
new KeyValuePair <string, string>("MIN", ePayInfo.MIN),
new KeyValuePair <string, string>("INVOICE", ePayInfo.Invoice),
new KeyValuePair <string, string>("TOTAL", ePayInfo.Amount),
new KeyValuePair <string, string>("DESCR", ePayInfo.Description),
new KeyValuePair <string, string>("ENCODING", "utf-8")
});
}
/// <summary>
/// Web Trader from ePay Documentation
/// </summary>
/// <param name="ePayInfo"></param>
/// <returns></returns>
private List <KeyValuePair <string, string> > EPayPayment(ePayQueryViewModel ePayInfo)
{
string ePayInfoString = "MIN=" + ePayInfo.MIN + "\nINVOICE=" + ePayInfo.Invoice + "\nAMOUNT=" + ePayInfo.Amount + "\nEXP_TIME=" + ePayInfo.ExpirationDate + "\nDESCR=" + ePayInfo.Description + "\nENCODING=utf-8";
string encoded = Convert.ToBase64String(Encoding.UTF8.GetBytes(ePayInfoString));
string checkSum = ePayHelpers.HMAC_SHA1_Encoding(encoded);
string page = _paymentMethodsStrings[PaymentMethods.EPayWebTrader];
return(new List <KeyValuePair <string, string> >
{
new KeyValuePair <string, string>("PAGE", page),
new KeyValuePair <string, string>("CHECKSUM", checkSum),
new KeyValuePair <string, string>("ENCODED", encoded)
});
}
/// <summary>
/// The Payed amount goes to the receiver bank account (which is specified in his ePay account)
/// </summary>
/// <param name="ePayInfo"></param>
/// <returns></returns>
private List <KeyValuePair <string, string> > DepositSlip(ePayQueryViewModel ePayInfo)
{
string page = _paymentMethodsStrings[PaymentMethods.DepositSlip];
string merchant = ConfigurationManager.AppSettings["CompanyName"];
string iban = ConfigurationManager.AppSettings["IBAN"];
string bic = ConfigurationManager.AppSettings["BIC"];
string amount = ePayInfo.Amount;
return(new List <KeyValuePair <string, string> >
{
new KeyValuePair <string, string>("PAGE", page),
new KeyValuePair <string, string>("MERCHANT", merchant),
new KeyValuePair <string, string>("IBAN", iban),
new KeyValuePair <string, string>("BIC", bic),
new KeyValuePair <string, string>("TOTAL", decimal.Parse(amount).ToString("F"))
});
}
public async Task <string> PaymentFacade(PaymentMethodInfoViewModel paymentInfo, PayedItemViewModel payedItem, decimal?amount = null, string urlOk = null, string urlCancel = null)
{
if (string.IsNullOrEmpty(payedItem.PayedItemId))
{
throw new ArgumentException("Идентификаторът на платения елемент е задължителен!");
}
var payedItemInfo = await PayedItemsManager.Get(payedItem.PayedItemCode) ?? throw new ArgumentException("Кодът не съществува!");
if (payedItemInfo.Amount == 0.0M && amount != null)
{
payedItemInfo.Amount = (decimal)amount;
}
else if (payedItemInfo.Amount == 0.0M && amount == null)
{
throw new ArgumentException("Цената на продуктът/услугата не е определена! Моля свържете се с екипът ни за корекция!");
}
ePayQueryViewModel ePayInfo = await InvoicesManager.CreateInvoiceForSending(payedItemInfo.Amount, payedItem.PayedItemId, payedItemInfo.Description, payedItem.PayedItemCode);
// Payment Logic
if (paymentInfo.PaymentMethod.ToUpper() == "EASYPAY")
{
if (!IsEasyPayModelValid(paymentInfo, payedItem))
{
throw new ServicesValidationException();
}
var easyPayCode = await GetEasyPayCode(ePayInfo, paymentInfo, payedItem);
return(easyPayCode);
}
else
{
if (!IsEPayModelValid(paymentInfo, payedItem))
{
throw new ServicesValidationException();
}
if (string.IsNullOrEmpty(urlOk) || string.IsNullOrEmpty(urlCancel))
{
throw new ServicesValidationException();
}
return(EPayFacade(ePayInfo, paymentInfo.PaymentMethod, urlOk, urlCancel));
}
}
/// <summary>
/// Expecting valid data !
/// </summary>
/// <param name="ePayInfo"></param>
/// <param name="paymentInfo"></param>
/// <param name="payedItem"></param>
/// <returns></returns>
private async Task <string> GetEasyPayCode(ePayQueryViewModel ePayInfo, PaymentMethodInfoViewModel paymentInfo, PayedItemViewModel payedItem)
{
//"MIN=D555355354\nINVOICE=123456\nAMOUNT=20.20\nEXP_TIME=01.08.2020\nDESCR=Test\nMERCHANT=eTemida\nIBAN=BG80BNBG96611020345678\nBIC=TTBBBG22\nPSTATEMENT=123456\nSTATEMENT=Плащане за обява\nOBLIG_PERSON=Стефан Манев\nEGN=8707221342\nDOC_NO=123456\nDOC_DATE=123\nDATE_BEGIN=123\nDATE_END=123";
string easyPayRequestParameters =
"MIN=" + ePayInfo.MIN + "\n" + // Required
"INVOICE=" + ePayInfo.Invoice + "\n" + // Required
"AMOUNT=" + ePayInfo.Amount + "\n" + // Required
"EXP_TIME=" + ePayInfo.ExpirationDate + "\n" + // Required
"DESCR=" + ePayInfo.Description + "\n" + // Optional
"MERCHANT=" + ConfigurationManager.AppSettings["CompanyName"] + "\n" + // Required
"IBAN=" + ConfigurationManager.AppSettings["IBAN"] + "\n" + // Required
"BIC=" + ConfigurationManager.AppSettings["BIC"] + "\n" + // Required
"OBLIG_PERSON=" + paymentInfo.PayerName + "\n" + // Required
//paymentInfo.PayerIdType + "=" + paymentInfo.PayerId + "\n" + // Required
"ENCODING=utf-8";
string encoded = Convert.ToBase64String(Encoding.UTF8.GetBytes(easyPayRequestParameters));
string checkSum = ePayHelpers.HMAC_SHA1_Encoding(encoded);
string resultParameters = "ENCODED=" + encoded + "&CHECKSUM=" + checkSum;
using (HttpClient client = new HttpClient())
{
var response = await client.GetAsync(ConfigurationManager.AppSettings["EasyPayUrl"] + "?" + resultParameters);
if (response.StatusCode == System.Net.HttpStatusCode.OK)
{
string easyPayResult = await response.Content.ReadAsStringAsync();
string easyPayCode = easyPayResult.Trim('\n').Split('=')[1]; // [0] is IDN / [1] is the Code
return(easyPayCode);
}
throw new ArgumentException("Сървърът на EasyPay не отговаря опитайте пак по-късно!");
}
}
