Payment plugin for Documents Seller - php

Question

I try to build payment plugin fo Joomdonation Documents Seller, i can send order to Bank, pay and after have some problem, when order is created and sent, it has status: in_progress, after payment status changes to success, i try to change record in database with if ($status == success) but can not. here is both files, 1. i start payment
session_start();
defined('_JEXEC') or die;
class os_bog extends DSFPayment
{
public function __construct($params, $config = [])
{
parent::__construct($params, $config);
}
public function processPayment($row, $data)
{
$curl = curl_init();
curl_setopt_array($curl, array(
CURLOPT_URL => 'https://ipay.ge/opay/api/v1/oauth2/token',
CURLOPT_RETURNTRANSFER => true,
CURLOPT_ENCODING => '',
CURLOPT_MAXREDIRS => 10,
CURLOPT_TIMEOUT => 0,
CURLOPT_FOLLOWLOCATION => true,
CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
CURLOPT_CUSTOMREQUEST => 'POST',
CURLOPT_POSTFIELDS => 'grant_type=client_credentials',
CURLOPT_HTTPHEADER =>array('Content-Type: application/x-www-form-urlencoded','Authorization: Basic '. base64_encode($client_id.':'.$secret_key)),
));
$response = curl_exec($curl);
curl_close($curl);
$response = json_decode($response, true);
$token = $response ['access_token'];
$curl = curl_init();
curl_setopt_array($curl, array(
CURLOPT_URL => 'https://ipay.ge/opay/api/v1/checkout/orders',
CURLOPT_RETURNTRANSFER => true,
CURLOPT_ENCODING => '',
CURLOPT_MAXREDIRS => 10,
CURLOPT_TIMEOUT => 0,
CURLOPT_FOLLOWLOCATION => true,
CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
CURLOPT_CUSTOMREQUEST => 'POST',
CURLOPT_POSTFIELDS =>'{
"intent": "CAPTURE",
"items": [
{
"amount": "'. $data['amount'].'" ,
"description": "'.$data['item_name'].'",
"product_id": "'.$data['item_name'].'"
}
],
"locale": "ka",
"redirect_url": "https://editor.ge/",
"shop_order_id": "'. $data['order_number'].'",
"show_shop_order_id_on_extract": false ,
"capture_method": "AUTOMATIC",
"purchase_units": [
{
"amount": {
"currency_code": "GEL",
"value": "'. $data['amount'].'"
}
}
]
}',
CURLOPT_HTTPHEADER => array(
'Content-Type: application/json',
'Authorization: Bearer' . $token ),
));
$response = curl_exec($curl);
curl_close($curl);
$response = json_decode($response, true);
$payment_hash = $response ['payment_hash'];
$order_id = $response ['order_id'];
if (isset($response['order_id'])) {
$payment_hash = $response['payment_hash'];
$order_id = $response['order_id'];
$redirect_url = $response['links'][1]['href'];
header("Location:" . $redirect_url);
}
$_SESSION['order_data'] = array(
'order_id' => $response ['order_id'],
'payment_hash' => $response ['payment_hash'],
);
return $response;
}
public function verifyPayment()
{
if ($this->validate())
{
}
}
protected function validate()
{
$this->notificationData = $_REQUEST;
return true;
}
}
i check status of payment
session_start();
$curl = curl_init();
curl_setopt_array($curl, array(
CURLOPT_URL => 'https://ipay.ge/opay/api/v1/oauth2/token',
CURLOPT_RETURNTRANSFER => true,
CURLOPT_ENCODING => '',
CURLOPT_MAXREDIRS => 10,
CURLOPT_TIMEOUT => 0,
CURLOPT_FOLLOWLOCATION => true,
CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
CURLOPT_CUSTOMREQUEST => 'POST',
CURLOPT_POSTFIELDS => 'grant_type=client_credentials',
CURLOPT_HTTPHEADER =>array('Content-Type: application/x-www-form-urlencoded','Authorization: Basic '. base64_encode($client_id.':'.$secret_key)),
));
$response = curl_exec($curl);
curl_close($curl);
$response = json_decode($response, true);
$token = $response ['access_token'];
$order_data = ($_SESSION['order_data']);
$order_id = $order_data['order_id'];
$payment_hash = $order_data['payment_hash'];
$curl = curl_init();
curl_setopt_array($curl, array(
CURLOPT_URL => 'https://ipay.ge/opay/api/v1/checkout/payment/'.$order_id,
CURLOPT_RETURNTRANSFER => true,
CURLOPT_ENCODING => '',
CURLOPT_MAXREDIRS => 10,
CURLOPT_TIMEOUT => 0,
CURLOPT_FOLLOWLOCATION => true,
CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
CURLOPT_CUSTOMREQUEST => 'GET',
CURLOPT_HTTPHEADER => array(
'Content-Type: application/json',
'Authorization: Bearer' . $token ),
));
$response = curl_exec($curl);
curl_close($curl);
$response = json_decode($response, true);
p.s. i can not check payment inside plugin(first code), callback url is predefined by Bank and i was no able to put code inside "public function verifyPayment()"
I am far not experienced , could someone help? Thank you in advance