text: <?php
  class ControllerExtensionExtensionShipping extends Controller {
  	private $error = array();
  
  	public function index() {
  		$this->load->language('extension/extension/shipping');
  
  		$this->load->model('setting/extension');
  
  		$this->getList();
  	}
  
  	public function install() {
  		$this->load->language('extension/extension/shipping');
  
  		$this->load->model('setting/extension');
  
  		if ($this->validate()) {
  			$this->model_setting_extension->install('shipping', $this->request->get['extension']);
  
  			$this->load->model('user/user_group');
  
  			$this->model_user_user_group->addPermission($this->user->getGroupId(), 'access', 'extension/shipping/' . $this->request->get['extension']);
  			$this->model_user_user_group->addPermission($this->user->getGroupId(), 'modify', 'extension/shipping/' . $this->request->get['extension']);
  
  			// Call install method if it exsits
  			$this->load->controller('extension/shipping/' . $this->request->get['extension'] . '/install');
  
  			$this->session->data['success'] = $this->language->get('text_success');
  		}
  
  		$this->getList();
  	}
  
  	public function uninstall() {
  		$this->load->language('extension/extension/shipping');
  
  		$this->load->model('setting/extension');
  
  		if ($this->validate()) {
  			$this->model_setting_extension->uninstall('shipping', $this->request->get['extension']);
  
  			// Call uninstall method if it exsits
  			$this->load->controller('extension/shipping/' . $this->request->get['extension'] . '/uninstall');
  
  			$this->session->data['success'] = $this->language->get('text_success');
  		}
  
  		$this->getList();
  	}
  
  	protected function getList() {
  		if (isset($this->error['warning'])) {
  			$data['error_warning'] = $this->error['warning'];
  		} else {
  			$data['error_warning'] = '';
  		}
  
  		if (isset($this->session->data['success'])) {
  			$data['success'] = $this->session->data['success'];
  
  			unset($this->session->data['success']);
  		} else {
  			$data['success'] = '';
  		}
  
  		$this->load->model('setting/extension');
  
  		$extensions = $this->model_setting_extension->getInstalled('shipping');
  		
  		foreach ($extensions as $key => $value) {
  			if (!is_file(DIR_APPLICATION . 'controller/extension/shipping/' . $value . '.php') && !is_file(DIR_APPLICATION . 'controller/shipping/' . $value . '.php')) {
  				$this->model_setting_extension->uninstall('shipping', $value);
  
  				unset($extensions[$key]);
  			}
  		}
  
  		$data['extensions'] = array();
  		
  		// Compatibility code for old extension folders
  		$files = glob(DIR_APPLICATION . 'controller/extension/shipping/*.php');
  
  		if ($files) {
  			foreach ($files as $file) {
  				$extension = basename($file, '.php');
  
  				$this->load->language('extension/shipping/' . $extension, 'extension');
  
  				$data['extensions'][] = array(
  					'name'       => $this->language->get('extension')->get('heading_title'),
  					'status'     => $this->config->get('shipping_' . $extension . '_status') ? $this->language->get('text_enabled') : $this->language->get('text_disabled'),
  					'sort_order' => $this->config->get('shipping_' . $extension . '_sort_order'),
  					'install'    => $this->url->link('extension/extension/shipping/install', 'user_token=' . $this->session->data['user_token'] . '&extension=' . $extension),
  					'uninstall'  => $this->url->link('extension/extension/shipping/uninstall', 'user_token=' . $this->session->data['user_token'] . '&extension=' . $extension),
  					'installed'  => in_array($extension, $extensions),
  					'edit'       => $this->url->link('extension/shipping/' . $extension, 'user_token=' . $this->session->data['user_token'])
  				);
  			}
  		}
  
  		$data['promotion'] = $this->load->controller('extension/extension/promotion');
  
  		$this->response->setOutput($this->load->view('extension/extension/shipping', $data));
  	}
  
  	protected function validate() {
  		if (!$this->user->hasPermission('modify', 'extension/extension/shipping')) {
  			$this->error['warning'] = $this->language->get('error_permission');
  		}
  
  		return !$this->error;
  	}
  }