public async Task <IActionResult> MpesaOnlineTransactionStatus(IFormCollection formcollection)
{
var accesstoken = await _mpesaClient.GetAuthTokenAsync(ConsumerKey, ConsumerSecret, RequestEndPoint.AuthToken);
var LNMOQuery = new LipaNaMpesaQueryDto
(
"174379",
PassKey,
DateTime.Now,
formcollection["checkoutRequestId"]
);
var queryResult = await _mpesaClient.QueryLipaNaMpesaTransactionAsync(LNMOQuery, accesstoken, RequestEndPoint.QueryLipaNaMpesaOnlieTransaction);
return(RedirectToAction("ConfirmMpesaPayment", new { response = queryResult, customerNumber = formcollection["phone_number"] }));
}
private async Task <string> RetrieveAccessToken()
{
var cacheKey = "MpesaAccessToken";
if (_memoryCache.TryGetValue(cacheKey, out string mpesaAccessToken))
{
_logger.LogInformation("Getting token from memory...");
return(mpesaAccessToken);
}
else
{
_logger.LogInformation("Getting token from Mpesa Server...");
mpesaAccessToken = await _mpesaClient.GetAuthTokenAsync(_mpesaApiConfiguration.ConsumerKey, _mpesaApiConfiguration.ConsumerSecret, MpesaRequestEndpoint.AuthToken);
// Set cache options
var cacheEntryOptions = new MemoryCacheEntryOptions().SetAbsoluteExpiration(TimeSpan.FromMinutes(59));
// Save data in cache
_memoryCache.Set(cacheKey, mpesaAccessToken, cacheEntryOptions);
return(mpesaAccessToken);
}
}
// To-Do refresh access token after every one hour
private async Task <string> RetrieveAccessToken()
{
return(await _mpesaClient.GetAuthTokenAsync(mpesaAPIConfiguration.ConsumerKey, mpesaAPIConfiguration.ConsumerSecret, MpesaRequestEndpoint.AuthToken));
}