/// <summary>
/// Get Authorization Request Params
/// </summary>
/// <param name="request"></param>
/// <returns>string</returns>
public static string GetInvoiceRequestParams(this PayfortInvoiceRequestModel request)
{
try
{
Dictionary <string, string> parameters = GetInvoiceParametersAsDictionary(request);
parameters.Add("signature", request.Signature);
if (null == parameters && parameters.Count == 0)
{
return(string.Empty);
}
System.Text.StringBuilder builder = new System.Text.StringBuilder();
builder.Append("{");
foreach (var key in parameters.Keys.OrderBy((t => t)))
{
var value = parameters[key];
builder.Append($"\"{key}\":\"{value}\",");
}
if (builder.ToString().EndsWith(","))
{
builder.Remove(builder.Length - 1, 1);
}
builder.Append("}");
var requestAsString = builder.ToString();
return(requestAsString);
}
catch
{
return(string.Empty);
}
}
/// <summary>
/// Generate SHA256 string
/// </summary>
/// <param name="request"></param>
/// <returns>string</returns>
private static string GetInvoiceSignatureAscending(PayfortInvoiceRequestModel request)
{
try
{
var parameters = GetInvoiceParametersAsDictionary(request);
if (null == parameters && parameters.Count == 0)
{
return(string.Empty);
}
System.Text.StringBuilder builder = new System.Text.StringBuilder();
builder.Append(request.RequestPhrase);
foreach (var key in parameters.Keys.OrderBy((t => t)))
{
var value = parameters[key];
builder.Append($"{key}={value}");
}
builder.Append(request.RequestPhrase);
var signature = builder.ToString();
return(signature);
}
catch
{
return(string.Empty);
}
}
/// <summary>
/// Generate SHA256 Signature
/// </summary>
/// <param name="request"></param>
public static string GenerateInvoiceSHA256Signature(this PayfortInvoiceRequestModel request)
{
try
{
//Align Parameters names in ascending order and then
//convert to SHA256
return(ConvertToSHA256(GetInvoiceSignatureAscending(request)));
}
catch
{
return(string.Empty);
}
}
private static Dictionary <string, string> GetInvoiceParametersAsDictionary(PayfortInvoiceRequestModel request)
{
Dictionary <string, string> parameters = new Dictionary <string, string>();
parameters.Add("access_code", request.AccessCode);
parameters.Add("amount", Convert.ToInt64(Convert.ToDecimal(request.Amount) * 100) + string.Empty);
parameters.Add("currency", request.Currency);
parameters.Add("customer_email", request.CustomerEmail);
parameters.Add("customer_name", request.CustomerName);
parameters.Add("customer_phone", request.CustomerPhoneNumber);
parameters.Add("language", request.Language);
parameters.Add("merchant_reference", request.MerchantReference);
parameters.Add("merchant_identifier", request.MerchantIdentifier);
parameters.Add("notification_type", PaymentNotificationsType.NONE.ToString());
//parameters.Add("order_description", request.OrderDescription);
parameters.Add("payment_option", string.IsNullOrEmpty(request.CreditCardType) ? "VISA" : request.CreditCardType);
parameters.Add("request_expiry_date", request.RequestExpiryDate.ToString("yyyy-MM-ddTHH:mm:ss") + "+00:00");
//parameters.Add("return_url", request.ReturnUrl);
parameters.Add("service_command", "PAYMENT_LINK");
return(parameters);
}
/// <summary>
/// Generates the invoice.
/// </summary>
/// <param name="request">The request.</param>
/// <returns></returns>
public PaymentResponse GenerateInvoice(PayfortInvoiceRequestModel request)
{
//Declarations
var errInfo = new PaymentResponse();
errInfo.BookingRefNumber = request.BookingReference;
request.RequestExpiryDate = DateTimeOffset.UtcNow.AddDays(24);
errInfo.RequestExpiryDate = request.RequestExpiryDate;
if (request != null)
{
//1. Generate SHA256 Signature
request.Signature = request.GenerateInvoiceSHA256Signature();
//2. Generate Json Request Parameter
var jsonRequest = request.GetInvoiceRequestParams();
//3. Send Request
return(InvoiceProcessor.Invoice(jsonRequest, request.Url, errInfo));
}
else
{
return(ExceptionHandler.ExceptionHandler.GetPayfortExceptionResponseInfo(errInfo, PaymentCommandType.AUTHORIZATION));
}
}
