public Result <MPESAPayment> MakeMPESAPayment(int userID, decimal total, string phoneNumber, bool isKES)
{
var timestamp = DateTime.Now.ToString("yyyyMMddhhmmss");
phoneNumber = phoneNumber.Replace("+", "").Replace(" ", "");
var mpesa = _configuration.GetSection("MPESA");
int amount;
if (isKES)
{
amount = (int)total;
}
else
{
var currency = _currencyAccessor.GetCurrencyByCode("KES").Payload;
amount = (int)Round(total * currency.ConversionRateFromUSD, currency.RoundDigits);
}
var payment = new MPESAPaymentRequest
{
BusinessShortCode = mpesa["SandboxShortCode"],
Password = _encryptionService.GenerateMPESAPassword(mpesa["SandboxShortCode"], mpesa["SandboxPassKey"], timestamp),
Timestamp = timestamp,
//For testing
Amount = 1,
PartyA = phoneNumber,
PartyB = mpesa["SandboxShortCode"],
PhoneNumber = phoneNumber,
CallBackURL = mpesa["SandboxCallBackURL"],
AccountReference = CalcAccountReference(),
TransactionDesc = "CYEC Donation"
};
try
{
//GetAuthCode
var authRequest = (HttpWebRequest)WebRequest.Create(mpesa["SandboxOAuthURL"]);
authRequest.ContentType = "application/json";
var authKey = "Basic " + Convert.ToBase64String((mpesa["SandboxConsumerKey"] + ":" + mpesa["SandboxConsumerSecret"]).Select(x => (byte)x).ToArray());
authRequest.Headers.Add("Authorization", authKey);
authRequest.Headers.Add("cache-control", "no-cache");
authRequest.Method = "GET";
var authResponse = (HttpWebResponse)authRequest.GetResponse();
var result = "";
using (var streamReader = new StreamReader(authResponse.GetResponseStream()))
{
result = streamReader.ReadToEnd();
}
var responseJSON = JsonConvert.DeserializeObject <JObject>(result);
var authToken = responseJSON["access_token"].ToString();
//Send payment request
var paymentRequest = (HttpWebRequest)WebRequest.Create(mpesa["SandboxURL"]);
paymentRequest.ContentType = "application/json";
paymentRequest.Accept = "*/*";
paymentRequest.KeepAlive = true;
paymentRequest.Headers.Add("Authorization", "Bearer " + authToken);
paymentRequest.Method = "POST";
using (var streamWriter = new StreamWriter(paymentRequest.GetRequestStream()))
{
string json = string.Format(_paymentTemplate, payment.BusinessShortCode, payment.Password, payment.Timestamp, payment.Amount, payment.PartyA,
payment.PartyB, payment.PhoneNumber, payment.CallBackURL, payment.AccountReference, payment.TransactionDesc);
json = "{" + json + "}";
streamWriter.Write(json);
}
var paymentResponse = (HttpWebResponse)paymentRequest.GetResponse();
result = "";
using (var streamReader = new StreamReader(paymentResponse.GetResponseStream()))
{
result = streamReader.ReadToEnd();
}
responseJSON = JsonConvert.DeserializeObject <JObject>(result);
var response = new MPESAPaymentResponse
{
MerchantRequestID = responseJSON["MerchantRequestID"].ToString(),
CheckoutRequestID = responseJSON["CheckoutRequestID"].ToString(),
ResponseCode = responseJSON["ResponseCode"].ToString(),
ResponseDescription = responseJSON["ResponseDescription"].ToString(),
CustomerMessage = responseJSON["CustomerMessage"].ToString(),
};
if (response.ResponseCode != "0")
{
return(new Result <MPESAPayment>(false, "Error initiating transaction."));
}
var donation = _donateAccessor.MakeDonation(userID, amount, "mpesa", "KES").Payload;
var mpesaPayment = new MPESAPayment
{
DonationID = donation.DonationID,
MerchantRequestID = response.MerchantRequestID,
CheckoutRequestID = response.CheckoutRequestID,
AccountReference = payment.AccountReference,
PaymentStatus = "Pending",
PhoneNumber = phoneNumber
};
_paymentAccessor.AddMPESAPayment(mpesaPayment);
var cartItems = _donateAccessor.GetCartItems(userID, "KES").Payload;
var items = cartItems.Select(x => new DonationItem
{
DonationID = donation.DonationID,
ItemID = x.ItemID,
TotalAmount = x.TotalAmount,
NumberOfItems = x.NumItems,
CurrencyID = x.CurrencyID
}).ToList();
_donateAccessor.AddDonationItems(items);
return(new Result <MPESAPayment>(mpesaPayment));
}
catch (Exception ex)
{
return(new Result <MPESAPayment>(false, "An error occurred while sending the payment: " + ex.Message));
}
}
