static function unplag_get_score($plagiarismsettings, $plagiarismfile, $force = false)
 {
     global $CFG, $DB;
     $api = new UnApi($plagiarismsettings['unplag_client_id'], $plagiarismsettings['unplag_api_secret']);
     $results = $api->GetResults($plagiarismfile->check_id);
     if ($results['result'] && $results['checks_results'][0][0]['progress'] == 100) {
         //check finished
         $plagiarismfile->statuscode = UNPLAG_STATUSCODE_PROCESSED;
         $plagiarismfile->progress = 100;
         $plagiarismfile->reporturl = '#';
         $plagiarismfile->similarityscore = (int) $results['checks_results'][0][0]['similarity'];
         $plagiarismfile->optout = (string) 'library/viewer/report/' . $plagiarismfile->check_id . '?share_token=' . $results['checks_results'][0][0]['share_token'];
         // Now send e-mail to user.
         $emailstudents = $DB->get_field('plagiarism_unplag_config', 'value', array('cm' => $plagiarismfile->cm, 'name' => 'unplag_studentemail'));
         if (!empty($emailstudents)) {
             $unplag = new self();
             $unplag->plagiarism_unplag_send_student_email($plagiarismfile);
         }
     } elseif (!$results['result']) {
         $plagiarismfile->status = UNPLAG_STATUSCODE_INVALID_RESPONSE;
         $plagiarismfile->errorresponse = json_encode($results['errors']);
     } else {
         //check not finished
         $plagiarismfile->progress = $results['checks_results'][0][0]['progress'];
     }
     $plagiarismfile->attempt = $plagiarismfile->attempt + 1;
     $DB->update_record('plagiarism_unplag_files', $plagiarismfile);
     return $plagiarismfile;
 }