badges/endorsement_json.php

   1 <?php
   2 // This file is part of Moodle - http://moodle.org/
   3 //
   4 // Moodle is free software: you can redistribute it and/or modify
   5 // it under the terms of the GNU General Public License as published by
   6 // the Free Software Foundation, either version 3 of the License, or
   7 // (at your option) any later version.
   8 //
   9 // Moodle is distributed in the hope that it will be useful,
  10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 // GNU General Public License for more details.
  13 //
  14 // You should have received a copy of the GNU General Public License
  15 // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
  16 /**
  17  * Serve endorsement JSON for assertion.
  18  *
  19  * @package    core
  20  * @subpackage badges
  21  * @copyright  2018 Tung Thai
  22  * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  23  * @author     Tung Thai <Tung.ThaiDuc@nashtechglobal.com>
  24  */
  25 define('AJAX_SCRIPT', true);
  26 define('NO_MOODLE_COOKIES', true); // No need for a session here.
  27 require_once(__DIR__ . '/../config.php');
  28 require_once($CFG->libdir . '/badgeslib.php');
  29
  30 if (empty($CFG->enablebadges)) {
  31     print_error('badgesdisabled', 'badges');
  32 }
  33
  34 global $DB;
  35 $id = required_param('id', PARAM_INT);
  36 $action = optional_param('action', null, PARAM_BOOL); // Generates endorsement issuer class if true.
  37 $badge = new badge($id);
  38
  39 $json = array();
  40 $endorsement = $badge->get_endorsement();
  41 $endorsementurl = new moodle_url('/badges/endorsement_json.php', array('id' => $id));
  42
  43 if ($endorsement) {
  44     $issuer = array();
  45     $issuerurl = new moodle_url('/badges/endorsement_json.php', array('id' => $id, 'action' => 1));
  46     $issuer['id'] = $issuerurl->out(false);
  47     $issuer['name'] = $endorsement->issuername;
  48     $issuer['email'] = $endorsement->issueremail;
  49     $issuer['url'] = $endorsement->issuerurl;
  50     if ($action) {
  51         $json = $issuer;
  52     } else {
  53         $json['@context'] = OPEN_BADGES_V2_CONTEXT;
  54         $json['type'] = OPEN_BADGES_V2_TYPE_ENDORSEMENT;
  55         $json['id'] = $endorsementurl->out(false);
  56         $json['issuer'] = $issuer;
  57         if (!empty($endorsement->claimcomment)) {
  58             $json['claim']['id'] = $endorsement->claimid;
  59             $json['claim']['endorsementComment'] = $endorsement->claimcomment;
  60         } else {
  61             $json['claim'] = $endorsement->claimid;
  62         }
  63         $json['issuedOn'] = date('c', $endorsement->dateissued);
  64         $json['verification'] = array('type' => 'hosted');
  65     }
  66 }
  67
  68 echo $OUTPUT->header();
  69 echo json_encode($json);