Viewing file:  PaytmProcessor.php (6.36 KB) -rw-r--r--
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<?php
/**
* @package PaytmProcessor
* @author techvillage <support@techvill.org>
* @contributor Md. Mostafijur Rahman <[mostafijur.techvill@gmail.com]>
* @created 01-02-23
*/
namespace Modules\Paytm\Processor;
use Modules\Gateway\Services\GatewayHelper;
use Modules\Paytm\Entities\Paytm;
use Modules\Paytm\Library\EncdecPaytm;
use Modules\Paytm\Response\PaytmResponse;
use Modules\Gateway\Contracts\{
PaymentProcessorInterface,
RequiresCallbackInterface,
RequiresCancelInterface
};
class PaytmProcessor implements PaymentProcessorInterface, RequiresCallbackInterface, RequiresCancelInterface
{
private $paytm;
private $helper;
private $email;
private $data;
private $notify_url;
private $domain = 'securegw-stage.paytm.in';
private $validate_payload;
private $payload;
private $paytm_txn_url;
private $paytm_txn_status_url;
/**
* Paytm processor constructor
*
* @return void
*/
public function __construct()
{
$this->helper = GatewayHelper::getInstance();
}
/**
* Set initials data
*
* @return void
*/
private function setupData()
{
$this->data = $this->helper->getPurchaseData($this->helper->getPaymentCode());
$this->paytm = Paytm::firstWhere('alias', config('paytm.alias'))->data;
if (empty($this->paytm)) {
throw new \Exception(__('At this moment this gateway is not available.'));
}
$this->notify_url = route('gateway.callback', withOldQueryIntegrity(['gateway' => 'paytm']));
$this->setEnvironment();
}
/**
* Set payload data
*
* @return void
*/
private function setPayload()
{
// Create an array having all required parameters for creating checksum.
$this->payload = array(
'MID' => $this->paytm->merchantId,
'ORDER_ID' => 'MV'.time(),
'CUST_ID' => 'MV'.time(),
'INDUSTRY_TYPE_ID' => 'Retail',
'CHANNEL_ID' => 'WEB',
'TXN_AMOUNT' => number_format($this->data->total, 2),
'WEBSITE' => $this->paytm->merchantId,
'CALLBACK_URL' => $this->notify_url,
'EMAIL' => $this->email,
);
}
/**
* Ajax payment
*
* @param object $request
* @return payment view
*/
public function pay($request)
{
if (!$request->email) {
throw new \Exception('Email is required!');
}
$this->email = $request->email;
$this->setupData();
$this->setPayload();
if (strtoupper($this->data->currency_code) != 'INR') {
throw new \Exception(__('Currency not supported by merchant'));
}
//Here checksum string will return by getChecksumFromArray() function.
$this->payload['CHECKSUMHASH'] = EncdecPaytm::getChecksumFromArray($this->payload, $this->paytm->merchantKey);
return view('paytm::redirect', ['paramList' => $this->payload, 'url' => $this->paytm_txn_url]);
}
/**
* Validate Transaction
*
* @param Request $request
* @return PaytmResponse
*/
public function validateTransaction($request)
{
$this->setupData();
$paytmChecksum = isset($request->CHECKSUMHASH) ? $request->CHECKSUMHASH : "";
if (!EncdecPaytm::verifychecksum_e($this->getResponse($request), $this->paytm->merchantKey, $paytmChecksum)) {
throw new \Exception(__('Process transaction as suspicious.'));
}
if ('TXN_SUCCESS' <> $request->STATUS) {
throw new \Exception($request->RESPMSG);
}
$this->setValidatePayload($request);
$this->validate_payload['CHECKSUMHASH'] = EncdecPaytm::getChecksumFromArray($this->validate_payload, $this->paytm->merchantKey);
// Call the PG's getTxnStatusNew() function for verifying the transaction status.
$transaction = EncdecPaytm::getTxnStatusNew($this->validate_payload, $this->paytm_txn_status_url);
if (!$transaction['STATUS']) {
throw new \Exception($transaction['RESPMSG']);
}
if ('TXN_SUCCESS' <> $transaction['STATUS']) {
throw new \Exception(__('Validation Failed.'));
}
return new PaytmResponse($this->data, $request);
}
/**
* Cancel Payment
*
* @param object $request
* @return void
*/
public function cancel($request)
{
throw new \Exception(__('Payment cancelled from Paytm.'));
}
/**
* Set validation data
*
* @param object $request
* @return void
*/
private function setValidatePayload($request)
{
$this->validate_payload = array(
'MID' => $this->paytm->merchantId,
'ORDERID' => $request->ORDERID
);
}
/**
* Set enviroment
*
* @return void
*/
private function setEnvironment()
{
if (!$this->paytm->sandbox) {
$this->domain = 'securegw-stage.paytm.in';
}
$this->setUrl();
}
/**
* Set Urls
*
* @return void
*/
private function setUrl()
{
$this->paytm_txn_url = 'https://' . $this->domain . '/theia/processTransaction';
$this->paytm_txn_status_url = 'https://' . $this->domain . '/merchant-status/getTxnStatus';
}
/**
* Set response data
*
* @param response $response
* @return array
*/
private function getResponse($response)
{
return array(
'ORDERID' => $response->ORDERID,
'MID' => $response->MID,
'TXNID' => $response->TXNID,
'TXNAMOUNT' => $response->TXNAMOUNT,
'PAYMENTMODE' => $response->PAYMENTMODE,
'CURRENCY' => $response->CURRENCY,
'TXNDATE' => $response->TXNDATE,
'STATUS' => $response->STATUS,
'RESPCODE' => $response->RESPCODE,
'RESPMSG' => $response->RESPMSG,
'GATEWAYNAME' => $response->GATEWAYNAME,
'BANKTXNID' => $response->BANKTXNID,
'BANKNAME' => $response->BANKNAME,
'CHECKSUMHASH' => $response->CHECKSUMHASH,
);
}
}
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