/**
  * Import file entry point by using $this->service
  * Check POST method & get valid uploaded file
  */
 public function import()
 {
     $fileUploadName = "qtiPackage";
     if ($this->getRequestMethod() != Request::HTTP_POST) {
         throw new \common_exception_NotImplemented('Only post method is accepted to import Qti package.');
     }
     if (tao_helpers_Http::hasUploadedFile($fileUploadName)) {
         $file = tao_helpers_Http::getUploadedFile($fileUploadName);
         $mimeType = tao_helpers_File::getMimeType($file['tmp_name']);
         if (!in_array($mimeType, self::$accepted_types)) {
             $this->returnFailure(new common_exception_BadRequest());
         } else {
             $report = $this->service->importQtiTest($file['tmp_name']);
             if ($report->getType() === common_report_Report::TYPE_SUCCESS) {
                 $data = array();
                 foreach ($report as $r) {
                     $values = $r->getData();
                     $testid = $values->rdfsResource->getUri();
                     foreach ($values->items as $item) {
                         $itemsid[] = $item->getUri();
                     }
                     $data[] = array('testId' => $testid, 'testItems' => $itemsid);
                 }
                 return $this->returnSuccess($data);
             } else {
                 return $this->returnFailure(new common_exception_InconsistentData($report->getMessage()));
             }
         }
     } else {
         return $this->returnFailure(new common_exception_BadRequest());
     }
 }