Viewing file:  PaystackProcessor.php (5.45 KB) -rw-r--r--
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<?php
/**
* @package PaystackProcessor
* @author TechVillage <support@techvill.org>
* @contributor Muhammad AR Zihad <[zihad.techvill@gmail.com]>
* @created 14-2-22
*/
namespace Modules\Paystack\Processor;
use Modules\Gateway\Contracts\PaymentProcessorInterface;
use Modules\Gateway\Contracts\RequiresCallbackInterface;
use Modules\Gateway\Services\GatewayHelper;
use Modules\Paystack\Entities\Paystack;
use Modules\Paystack\Response\PaystackResponse;
class PaystackProcessor implements PaymentProcessorInterface, RequiresCallbackInterface
{
private $paystack;
private $helper;
private $email;
private $data;
/**
* Constructor for paystack processor
*
* @return void
*/
public function __construct()
{
$this->helper = GatewayHelper::getInstance();
}
/**
* Setup initials data
*
* @return void
*/
private function setupData()
{
$this->data = $this->helper->getPurchaseData($this->helper->getPaymentCode());
$this->paystack = Paystack::firstWhere('alias', config('paystack.alias'))->data;
}
/**
* Handles payment for paystack
*
* @param Request $request
* @return mixed
*/
public function pay($request)
{
if (!$request->email) {
throw new \Exception('Email is required!');
}
$this->email = $request->email;
$this->setupData();
return $this->curlPaymentRequest();
}
/**
* Curl request for payment
*
* @return mixed
*/
private function curlRequestForPayment()
{
$curl = curl_init();
$amount = round($this->data->total * 100, 0);
curl_setopt_array($curl, array(
CURLOPT_URL => "https://api.paystack.co/transaction/initialize",
CURLOPT_RETURNTRANSFER => true,
CURLOPT_CUSTOMREQUEST => "POST",
CURLOPT_SSL_VERIFYHOST => config('paystack.ssl_verify_host'),
CURLOPT_SSL_VERIFYPEER => config('paystack.ssl_verify_peer'),
CURLOPT_POSTFIELDS => json_encode([
'amount' => $amount,
'email' => $this->email,
'currency' => $this->data->currency_code,
'callback_url' => route(config('gateway.payment_callback'), withOldQueryIntegrity(['gateway' => 'paystack']))
]),
CURLOPT_HTTPHEADER => [
"authorization: Bearer " . $this->paystack->secretKey,
"content-type: application/json",
"cache-control: no-cache"
],
));
return curl_exec($curl);
}
/**
* Curl payment request
*
* @return mixed
*/
private function curlPaymentRequest()
{
$response = $this->curlRequestForPayment();
$transaction = json_decode($response, true);
if (!$transaction['status']) {
throw new \Exception($transaction['message']);
}
$this->setTransactionSession($transaction['data']);
return redirect($transaction['data']['authorization_url']);
}
/**
* Set transaction session for reference
*
* @param Array|mixed $transaction
* @return void
*/
private function setTransactionSession($transaction)
{
session([
$this->helper->getPaymentCode() . '-paystack' => json_encode([
'ref' => $transaction['reference']
])
]);
}
/**
* Get payment reference
*
* @return mixed
*/
private function getPaymentRef()
{
return json_decode(session($this->helper->getPaymentCode() . '-paystack'));
}
/**
* Validate transaction.
*
* @param Request $request
* @return PaystackResponse
*/
public function validateTransaction($request)
{
$this->setupData();
$reference = $request->reference;
if (!$reference) {
throw new \Exception('No reference supplied.');
}
$sessionRef = $this->getPaymentRef();
if ($reference <> $sessionRef->ref) {
throw new \Exception('Reference doesn\'t match with the order.');
}
$curlResponse = $this->curlRequestForValidation($reference);
$transaction = json_decode($curlResponse);
if (!$transaction->status) {
throw new \Exception($transaction->message);
}
if ('success' <> $transaction->data->status) {
throw new \Exception('Validation Failed.');
}
return new PaystackResponse($this->data, $transaction->data);
}
/**
* Curl request for validation
*
* @param String|Mixed $reference
* @return Mixed
*/
private function curlRequestForValidation($reference)
{
$curl = curl_init();
curl_setopt_array($curl, array(
CURLOPT_URL => "https://api.paystack.co/transaction/verify/" . rawurlencode($reference),
CURLOPT_RETURNTRANSFER => true,
CURLOPT_SSL_VERIFYHOST => 0,
CURLOPT_SSL_VERIFYPEER => 0,
CURLOPT_HTTPHEADER => [
"accept: application/json",
"authorization: Bearer " . $this->paystack->secretKey,
"cache-control: no-cache"
],
));
return curl_exec($curl);
}
}
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