Microweber\Providers\Shop\CheckoutManager::checkout_ipn PHP Method

    public function checkout_ipn($data)
    {
        if (isset($data['payment_verify_token'])) {
            $payment_verify_token = $data['payment_verify_token'];
        }
        if (!isset($data['payment_gw'])) {
            return array('error' => 'You must provide a payment gateway parameter!');
        }
        $data['payment_gw'] = str_replace('..', '', $data['payment_gw']);
        $hostname = $this->get_domain_from_str($_SERVER['REMOTE_ADDR']);
        $payment_verify_token = $this->app->database_manager->escape_string($payment_verify_token);
        $table = $this->tables['cart_orders'];
        $query = array();
        $query['payment_verify_token'] = $payment_verify_token;
        if (isset($data['order_id'])) {
            $query['id'] = intval($data['order_id']);
        } else {
            $query['transaction_id'] = '[null]';
        }
        $query['limit'] = 1;
        $query['table'] = $table;
        $query['no_cache'] = true;
        $ord_data = $this->app->database_manager->get($query);
        if (!isset($ord_data[0]) or !is_array($ord_data[0])) {
            return array('error' => 'Order is completed or expired.');
        } else {
            $ord_data = $ord_data[0];
            $ord = $ord_data['id'];
        }
        $cart_table = $this->tables['cart'];
        $table_orders = $this->tables['cart_orders'];
        $data['payment_gw'] = str_replace('..', '', $data['payment_gw']);
        $gw_process = modules_path() . $data['payment_gw'] . '_checkout_ipn.php';
        if (!is_file($gw_process)) {
            $gw_process = normalize_path(modules_path() . $data['payment_gw'] . DS . 'checkout_ipn.php', false);
        }
        if (!is_file($gw_process)) {
            $gw_process = normalize_path(modules_path() . $data['payment_gw'] . DS . 'notify.php', false);
        }
        $update_order = array();
        if (is_file($gw_process)) {
            include $gw_process;
        } else {
            return array('error' => 'The payment gateway is not found!');
        }
        if (!empty($update_order) and isset($update_order['order_completed']) and trim($update_order['order_completed']) == 1) {
            $update_order['id'] = $ord;
            $update_order['payment_gw'] = $data['payment_gw'];
            $ord = $this->app->database_manager->save($table_orders, $update_order);
            $this->confirm_email_send($ord);
            if (isset($update_order['is_paid']) and $update_order['is_paid'] == 1) {
                $this->app->shop_manager->update_quantities($ord);
            }
            if ($ord > 0) {
                $this->app->cache_manager->delete('cart/global');
                $this->app->cache_manager->delete('cart_orders/global');
                //return true;
            }
        }
        if (isset($data['return_to'])) {
            $return_to = urldecode($data['return_to']);
            $append = '?';
            if (strstr($return_to, '?')) {
                $append = '&';
            }
            $return_to = $return_to . $append . 'mw_payment_success=1';
            return $this->app->url_manager->redirect($return_to);
        }
        return;
    }