OpenCart 🇺🇦

$this->language->load('extension/payment');

if (!$this->user->hasPermission('modify', 'extension/payment')) {
	$this->session->data['error'] = $this->language->get('error_permission'); 

	$this->redirect($this->url->link('extension/payment', 'token=' . $this->session->data['token'], 'SSL'));
} else {
	$this->load->model('setting/extension');

	$this->model_setting_extension->install('payment', $this->request->get['extension']);

	$this->load->model('user/user_group');

	$this->model_user_user_group->addPermission($this->user->getId(), 'access', 'payment/' . $this->request->get['extension']);
	$this->model_user_user_group->addPermission($this->user->getId(), 'modify', 'payment/' . $this->request->get['extension']);

	require_once(DIR_APPLICATION . 'controller/payment/' . $this->request->get['extension'] . '.php');

	$class = 'ControllerPayment' . str_replace('_', '', $this->request->get['extension']);
	$class = new $class($this->registry);

	if (method_exists($class, 'install')) {
		$class->install();
	}

	$this->redirect($this->url->link('extension/payment', 'token=' . $this->session->data['token'], 'SSL'));
}