2 // This file is part of Moodle - http://moodle.org/
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.
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.
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/>.
18 * Contains classes, functions and constants used in badges.
22 * @copyright 2012 onwards Totara Learning Solutions Ltd {@link http://www.totaralms.com/}
23 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
24 * @author Yuliya Bozhko <yuliya.bozhko@totaralms.com>
27 defined('MOODLE_INTERNAL') || die();
29 /* Include required award criteria library. */
30 require_once($CFG->dirroot . '/badges/criteria/award_criteria.php');
33 * Number of records per page.
35 define('BADGE_PERPAGE', 50);
38 * Badge award criteria aggregation method.
40 define('BADGE_CRITERIA_AGGREGATION_ALL', 1);
43 * Badge award criteria aggregation method.
45 define('BADGE_CRITERIA_AGGREGATION_ANY', 2);
48 * Inactive badge means that this badge cannot be earned and has not been awarded
49 * yet. Its award criteria can be changed.
51 define('BADGE_STATUS_INACTIVE', 0);
54 * Active badge means that this badge can we earned, but it has not been awarded
55 * yet. Can be deactivated for the purpose of changing its criteria.
57 define('BADGE_STATUS_ACTIVE', 1);
60 * Inactive badge can no longer be earned, but it has been awarded in the past and
61 * therefore its criteria cannot be changed.
63 define('BADGE_STATUS_INACTIVE_LOCKED', 2);
66 * Active badge means that it can be earned and has already been awarded to users.
67 * Its criteria cannot be changed any more.
69 define('BADGE_STATUS_ACTIVE_LOCKED', 3);
72 * Archived badge is considered deleted and can no longer be earned and is not
73 * displayed in the list of all badges.
75 define('BADGE_STATUS_ARCHIVED', 4);
78 * Badge type for site badges.
80 define('BADGE_TYPE_SITE', 1);
83 * Badge type for course badges.
85 define('BADGE_TYPE_COURSE', 2);
88 * Badge messaging schedule options.
90 define('BADGE_MESSAGE_NEVER', 0);
91 define('BADGE_MESSAGE_ALWAYS', 1);
92 define('BADGE_MESSAGE_DAILY', 2);
93 define('BADGE_MESSAGE_WEEKLY', 3);
94 define('BADGE_MESSAGE_MONTHLY', 4);
97 * Class that represents badge.
101 /** @var int Badge id */
104 /** Values from the table 'badge' */
108 public $timemodified;
110 public $usermodified;
113 public $issuercontact;
115 public $expireperiod;
119 public $messagesubject;
121 public $notification;
125 /** @var array Badge criteria */
126 public $criteria = array();
129 * Constructs with badge details.
131 * @param int $badgeid badge ID.
133 public function __construct($badgeid) {
135 $this->id = $badgeid;
137 $data = $DB->get_record('badge', array('id' => $badgeid));
140 print_error('error:nosuchbadge', 'badges', $badgeid);
143 foreach ((array)$data as $field => $value) {
144 if (property_exists($this, $field)) {
145 $this->{$field} = $value;
149 $this->criteria = self::get_criteria();
153 * Use to get context instance of a badge.
154 * @return context instance.
156 public function get_context() {
157 if ($this->type == BADGE_TYPE_SITE) {
158 return context_system::instance();
159 } else if ($this->type == BADGE_TYPE_COURSE) {
160 return context_course::instance($this->courseid);
162 debugging('Something is wrong...');
167 * Return array of aggregation methods
170 public static function get_aggregation_methods() {
172 BADGE_CRITERIA_AGGREGATION_ALL => get_string('all', 'badges'),
173 BADGE_CRITERIA_AGGREGATION_ANY => get_string('any', 'badges'),
178 * Return array of accepted criteria types for this badge
181 public function get_accepted_criteria() {
182 $criteriatypes = array();
184 if ($this->type == BADGE_TYPE_COURSE) {
185 $criteriatypes = array(
186 BADGE_CRITERIA_TYPE_OVERALL,
187 BADGE_CRITERIA_TYPE_MANUAL,
188 BADGE_CRITERIA_TYPE_COURSE,
189 BADGE_CRITERIA_TYPE_ACTIVITY
191 } else if ($this->type == BADGE_TYPE_SITE) {
192 $criteriatypes = array(
193 BADGE_CRITERIA_TYPE_OVERALL,
194 BADGE_CRITERIA_TYPE_MANUAL,
195 BADGE_CRITERIA_TYPE_COURSESET,
196 BADGE_CRITERIA_TYPE_PROFILE,
200 return $criteriatypes;
204 * Save/update badge information in 'badge' table only.
205 * Cannot be used for updating awards and criteria settings.
207 * @return bool Returns true on success.
209 public function save() {
212 $fordb = new stdClass();
213 foreach (get_object_vars($this) as $k => $v) {
216 unset($fordb->criteria);
218 $fordb->timemodified = time();
219 if ($DB->update_record_raw('badge', $fordb)) {
222 throw new moodle_exception('error:save', 'badges');
228 * Creates and saves a clone of badge with all its properties.
229 * Clone is not active by default and has 'Copy of' attached to its name.
231 * @return int ID of new badge.
233 public function make_clone() {
236 $fordb = new stdClass();
237 foreach (get_object_vars($this) as $k => $v) {
241 $fordb->name = get_string('copyof', 'badges', $this->name);
242 $fordb->status = BADGE_STATUS_INACTIVE;
243 $fordb->usercreated = $USER->id;
244 $fordb->usermodified = $USER->id;
245 $fordb->timecreated = time();
246 $fordb->timemodified = time();
249 if ($fordb->notification > 1) {
250 $fordb->nextcron = badges_calculate_message_schedule($fordb->notification);
253 $criteria = $fordb->criteria;
254 unset($fordb->criteria);
256 if ($new = $DB->insert_record('badge', $fordb, true)) {
257 $newbadge = new badge($new);
260 $fs = get_file_storage();
261 if ($file = $fs->get_file($this->get_context()->id, 'badges', 'badgeimage', $this->id, '/', 'f1.png')) {
262 if ($imagefile = $file->copy_content_to_temp()) {
263 badges_process_badge_image($newbadge, $imagefile);
267 // Copy badge criteria.
268 foreach ($this->criteria as $crit) {
269 $crit->make_clone($new);
274 throw new moodle_exception('error:clone', 'badges');
280 * Checks if badges is active.
281 * Used in badge award.
283 * @return bool A status indicating badge is active
285 public function is_active() {
286 if (($this->status == BADGE_STATUS_ACTIVE) ||
287 ($this->status == BADGE_STATUS_ACTIVE_LOCKED)) {
294 * Use to get the name of badge status.
297 public function get_status_name() {
298 return get_string('badgestatus_' . $this->status, 'badges');
302 * Use to set badge status.
303 * Only active badges can be earned/awarded/issued.
305 * @param int $status Status from BADGE_STATUS constants
307 public function set_status($status = 0) {
308 $this->status = $status;
313 * Checks if badges is locked.
314 * Used in badge award and editing.
316 * @return bool A status indicating badge is locked
318 public function is_locked() {
319 if (($this->status == BADGE_STATUS_ACTIVE_LOCKED) ||
320 ($this->status == BADGE_STATUS_INACTIVE_LOCKED)) {
327 * Checks if badge has been awarded to users.
328 * Used in badge editing.
330 * @return bool A status indicating badge has been awarded at least once
332 public function has_awards() {
334 if ($DB->record_exists('badge_issued', array('badgeid' => $this->id))) {
341 * Gets list of users who have earned an instance of this badge.
343 * @return array An array of objects with information about badge awards.
345 public function get_awards() {
348 $awards = $DB->get_records_sql(
349 'SELECT b.userid, b.dateissued, b.uniquehash, u.firstname, u.lastname
350 FROM {badge_issued} b INNER JOIN {user} u
352 WHERE b.badgeid = :badgeid', array('badgeid' => $this->id));
358 * Indicates whether badge has already been issued to a user.
361 public function is_issued($userid) {
363 return $DB->record_exists('badge_issued', array('badgeid' => $this->id, 'userid' => $userid));
367 * Issue a badge to user.
369 * @param int $userid User who earned the badge
370 * @param bool $nobake Not baking actual badges (for testing purposes)
372 public function issue($userid, $nobake = false) {
376 $issued = new stdClass();
377 $issued->badgeid = $this->id;
378 $issued->userid = $userid;
379 $issued->uniquehash = sha1(rand() . $userid . $this->id . $now);
380 $issued->dateissued = $now;
382 if ($this->can_expire()) {
383 $issued->dateexpire = $this->calculate_expiry($now);
385 $issued->dateexpire = null;
388 // Take into account user badges privacy settings.
389 // If none set, badges default visibility is set to public.
390 $issued->visible = get_user_preferences('badgeprivacysetting', 1, $userid);
392 $result = $DB->insert_record('badge_issued', $issued, true);
395 // Lock the badge, so that its criteria could not be changed any more.
396 if ($this->status == BADGE_STATUS_ACTIVE) {
397 $this->set_status(BADGE_STATUS_ACTIVE_LOCKED);
400 // Update details in criteria_met table.
401 $compl = $this->get_criteria_completions($userid);
402 foreach ($compl as $c) {
403 $obj = new stdClass();
405 $obj->issuedid = $result;
406 $DB->update_record('badge_criteria_met', $obj, true);
410 // Bake a badge image.
411 $pathhash = badges_bake($issued->uniquehash, $this->id, $userid, true);
413 // Notify recipients and badge creators.
414 badges_notify_badge_award($this, $userid, $issued->uniquehash, $pathhash);
420 * Reviews all badge criteria and checks if badge can be instantly awarded.
422 * @return int Number of awards
424 public function review_all_criteria() {
428 // Raise timelimit as this could take a while for big web sites.
429 core_php_time_limit::raise();
430 raise_memory_limit(MEMORY_HUGE);
432 foreach ($this->criteria as $crit) {
433 // Overall criterion is decided when other criteria are reviewed.
434 if ($crit->criteriatype == BADGE_CRITERIA_TYPE_OVERALL) {
438 list($extrajoin, $extrawhere, $extraparams) = $crit->get_completed_criteria_sql();
439 // For site level badges, get all active site users who can earn this badge and haven't got it yet.
440 if ($this->type == BADGE_TYPE_SITE) {
441 $sql = "SELECT DISTINCT u.id, bi.badgeid
444 LEFT JOIN {badge_issued} bi
445 ON u.id = bi.userid AND bi.badgeid = :badgeid
446 WHERE bi.badgeid IS NULL AND u.id != :guestid AND u.deleted = 0 " . $extrawhere;
447 $params = array_merge(array('badgeid' => $this->id, 'guestid' => $CFG->siteguest), $extraparams);
448 $toearn = $DB->get_fieldset_sql($sql, $params);
450 // For course level badges, get all users who already earned the badge in this course.
451 // Then find the ones who are enrolled in the course and don't have a badge yet.
452 $earned = $DB->get_fieldset_select('badge_issued', 'userid AS id', 'badgeid = :badgeid', array('badgeid' => $this->id));
454 $earnedparams = array();
455 if (!empty($earned)) {
456 list($earnedsql, $earnedparams) = $DB->get_in_or_equal($earned, SQL_PARAMS_NAMED, 'u', false);
457 $wheresql = ' WHERE u.id ' . $earnedsql;
459 list($enrolledsql, $enrolledparams) = get_enrolled_sql($this->get_context(), 'moodle/badges:earnbadge', 0, true);
463 JOIN ({$enrolledsql}) je ON je.id = u.id " . $wheresql . $extrawhere;
464 $params = array_merge($enrolledparams, $earnedparams, $extraparams);
465 $toearn = $DB->get_fieldset_sql($sql, $params);
468 foreach ($toearn as $uid) {
469 $reviewoverall = false;
470 if ($crit->review($uid, true)) {
471 $crit->mark_complete($uid);
472 if ($this->criteria[BADGE_CRITERIA_TYPE_OVERALL]->method == BADGE_CRITERIA_AGGREGATION_ANY) {
473 $this->criteria[BADGE_CRITERIA_TYPE_OVERALL]->mark_complete($uid);
477 $reviewoverall = true;
480 // Will be reviewed some other time.
481 $reviewoverall = false;
483 // Review overall if it is required.
484 if ($reviewoverall && $this->criteria[BADGE_CRITERIA_TYPE_OVERALL]->review($uid)) {
485 $this->criteria[BADGE_CRITERIA_TYPE_OVERALL]->mark_complete($uid);
496 * Gets an array of completed criteria from 'badge_criteria_met' table.
498 * @param int $userid Completions for a user
499 * @return array Records of criteria completions
501 public function get_criteria_completions($userid) {
503 $completions = array();
504 $sql = "SELECT bcm.id, bcm.critid
505 FROM {badge_criteria_met} bcm
506 INNER JOIN {badge_criteria} bc ON bcm.critid = bc.id
507 WHERE bc.badgeid = :badgeid AND bcm.userid = :userid ";
508 $completions = $DB->get_records_sql($sql, array('badgeid' => $this->id, 'userid' => $userid));
514 * Checks if badges has award criteria set up.
516 * @return bool A status indicating badge has at least one criterion
518 public function has_criteria() {
519 if (count($this->criteria) > 0) {
526 * Returns badge award criteria
528 * @return array An array of badge criteria
530 public function get_criteria() {
534 if ($records = (array)$DB->get_records('badge_criteria', array('badgeid' => $this->id))) {
535 foreach ($records as $record) {
536 $criteria[$record->criteriatype] = award_criteria::build((array)$record);
544 * Get aggregation method for badge criteria
546 * @param int $criteriatype If none supplied, get overall aggregation method (optional)
547 * @return int One of BADGE_CRITERIA_AGGREGATION_ALL or BADGE_CRITERIA_AGGREGATION_ANY
549 public function get_aggregation_method($criteriatype = 0) {
551 $params = array('badgeid' => $this->id, 'criteriatype' => $criteriatype);
552 $aggregation = $DB->get_field('badge_criteria', 'method', $params, IGNORE_MULTIPLE);
555 return BADGE_CRITERIA_AGGREGATION_ALL;
562 * Checks if badge has expiry period or date set up.
564 * @return bool A status indicating badge can expire
566 public function can_expire() {
567 if ($this->expireperiod || $this->expiredate) {
574 * Calculates badge expiry date based on either expirydate or expiryperiod.
576 * @param int $timestamp Time of badge issue
577 * @return int A timestamp
579 public function calculate_expiry($timestamp) {
582 if (isset($this->expiredate)) {
583 $expiry = $this->expiredate;
584 } else if (isset($this->expireperiod)) {
585 $expiry = $timestamp + $this->expireperiod;
592 * Checks if badge has manual award criteria set.
594 * @return bool A status indicating badge can be awarded manually
596 public function has_manual_award_criteria() {
597 foreach ($this->criteria as $criterion) {
598 if ($criterion->criteriatype == BADGE_CRITERIA_TYPE_MANUAL) {
606 * Marks the badge as archived.
607 * For reporting and historical purposed we cannot completely delete badges.
608 * We will just change their status to BADGE_STATUS_ARCHIVED.
610 public function delete() {
611 $this->status = BADGE_STATUS_ARCHIVED;
617 * Sends notifications to users about awarded badges.
619 * @param badge $badge Badge that was issued
620 * @param int $userid Recipient ID
621 * @param string $issued Unique hash of an issued badge
622 * @param string $filepathhash File path hash of an issued badge for attachments
624 function badges_notify_badge_award(badge $badge, $userid, $issued, $filepathhash) {
627 $admin = get_admin();
628 $userfrom = new stdClass();
629 $userfrom->id = $admin->id;
630 $userfrom->email = !empty($CFG->badges_defaultissuercontact) ? $CFG->badges_defaultissuercontact : $admin->email;
631 foreach (get_all_user_name_fields() as $addname) {
632 $userfrom->$addname = !empty($CFG->badges_defaultissuername) ? '' : $admin->$addname;
634 $userfrom->firstname = !empty($CFG->badges_defaultissuername) ? $CFG->badges_defaultissuername : $admin->firstname;
635 $userfrom->maildisplay = true;
637 $issuedlink = html_writer::link(new moodle_url('/badges/badge.php', array('hash' => $issued)), $badge->name);
638 $userto = $DB->get_record('user', array('id' => $userid), '*', MUST_EXIST);
640 $params = new stdClass();
641 $params->badgename = $badge->name;
642 $params->username = fullname($userto);
643 $params->badgelink = $issuedlink;
644 $message = badge_message_from_template($badge->message, $params);
645 $plaintext = format_text_email($message, FORMAT_HTML);
648 $eventdata = new stdClass();
649 $eventdata->component = 'moodle';
650 $eventdata->name = 'badgerecipientnotice';
651 $eventdata->userfrom = $userfrom;
652 $eventdata->userto = $userto;
653 $eventdata->notification = 1;
654 $eventdata->subject = $badge->messagesubject;
655 $eventdata->fullmessage = $plaintext;
656 $eventdata->fullmessageformat = FORMAT_PLAIN;
657 $eventdata->fullmessagehtml = $message;
658 $eventdata->smallmessage = $plaintext;
660 // Attach badge image if possible.
661 if (!empty($CFG->allowattachments) && $badge->attachment && is_string($filepathhash)) {
662 $fs = get_file_storage();
663 $file = $fs->get_file_by_hash($filepathhash);
664 $eventdata->attachment = $file;
665 $eventdata->attachname = str_replace(' ', '_', $badge->name) . ".png";
667 message_send($eventdata);
669 message_send($eventdata);
672 // Notify badge creator about the award if they receive notifications every time.
673 if ($badge->notification == 1) {
674 $userfrom = core_user::get_noreply_user();
675 $userfrom->maildisplay = true;
677 $creator = $DB->get_record('user', array('id' => $badge->usercreated), '*', MUST_EXIST);
679 $a->user = fullname($userto);
680 $a->link = $issuedlink;
681 $creatormessage = get_string('creatorbody', 'badges', $a);
682 $creatorsubject = get_string('creatorsubject', 'badges', $badge->name);
684 $eventdata = new stdClass();
685 $eventdata->component = 'moodle';
686 $eventdata->name = 'badgecreatornotice';
687 $eventdata->userfrom = $userfrom;
688 $eventdata->userto = $creator;
689 $eventdata->notification = 1;
690 $eventdata->subject = $creatorsubject;
691 $eventdata->fullmessage = format_text_email($creatormessage, FORMAT_HTML);
692 $eventdata->fullmessageformat = FORMAT_PLAIN;
693 $eventdata->fullmessagehtml = $creatormessage;
694 $eventdata->smallmessage = $creatorsubject;
696 message_send($eventdata);
697 $DB->set_field('badge_issued', 'issuernotified', time(), array('badgeid' => $badge->id, 'userid' => $userid));
702 * Caclulates date for the next message digest to badge creators.
704 * @param in $schedule Type of message schedule BADGE_MESSAGE_DAILY|BADGE_MESSAGE_WEEKLY|BADGE_MESSAGE_MONTHLY.
705 * @return int Timestamp for next cron
707 function badges_calculate_message_schedule($schedule) {
711 case BADGE_MESSAGE_DAILY:
712 $nextcron = time() + 60 * 60 * 24;
714 case BADGE_MESSAGE_WEEKLY:
715 $nextcron = time() + 60 * 60 * 24 * 7;
717 case BADGE_MESSAGE_MONTHLY:
718 $nextcron = time() + 60 * 60 * 24 * 7 * 30;
726 * Replaces variables in a message template and returns text ready to be emailed to a user.
728 * @param string $message Message body.
729 * @return string Message with replaced values
731 function badge_message_from_template($message, $params) {
733 foreach ($params as $key => $value) {
734 $msg = str_replace("%$key%", $value, $msg);
743 * @param int Type of badges to return
744 * @param int Course ID for course badges
745 * @param string $sort An SQL field to sort by
746 * @param string $dir The sort direction ASC|DESC
747 * @param int $page The page or records to return
748 * @param int $perpage The number of records to return per page
749 * @param int $user User specific search
750 * @return array $badge Array of records matching criteria
752 function badges_get_badges($type, $courseid = 0, $sort = '', $dir = '', $page = 0, $perpage = BADGE_PERPAGE, $user = 0) {
756 $where = "b.status != :deleted AND b.type = :type ";
757 $params['deleted'] = BADGE_STATUS_ARCHIVED;
759 $userfields = array('b.id, b.name, b.status');
762 $userfields[] = 'bi.dateissued';
763 $userfields[] = 'bi.uniquehash';
764 $usersql = " LEFT JOIN {badge_issued} bi ON b.id = bi.badgeid AND bi.userid = :userid ";
765 $params['userid'] = $user;
766 $where .= " AND (b.status = 1 OR b.status = 3) ";
768 $fields = implode(', ', $userfields);
770 if ($courseid != 0 ) {
771 $where .= "AND b.courseid = :courseid ";
772 $params['courseid'] = $courseid;
775 $sorting = (($sort != '' && $dir != '') ? 'ORDER BY ' . $sort . ' ' . $dir : '');
776 $params['type'] = $type;
778 $sql = "SELECT $fields FROM {badge} b $usersql WHERE $where $sorting";
779 $records = $DB->get_records_sql($sql, $params, $page * $perpage, $perpage);
782 foreach ($records as $r) {
783 $badge = new badge($r->id);
784 $badges[$r->id] = $badge;
786 $badges[$r->id]->dateissued = $r->dateissued;
787 $badges[$r->id]->uniquehash = $r->uniquehash;
789 $badges[$r->id]->awards = $DB->count_records('badge_issued', array('badgeid' => $badge->id));
790 $badges[$r->id]->statstring = $badge->get_status_name();
797 * Get badges for a specific user.
799 * @param int $userid User ID
800 * @param int $courseid Badges earned by a user in a specific course
801 * @param int $page The page or records to return
802 * @param int $perpage The number of records to return per page
803 * @param string $search A simple string to search for
804 * @param bool $onlypublic Return only public badges
805 * @return array of badges ordered by decreasing date of issue
807 function badges_get_user_badges($userid, $courseid = 0, $page = 0, $perpage = 0, $search = '', $onlypublic = false) {
824 WHERE b.id = bi.badgeid
828 if (!empty($search)) {
829 $sql .= ' AND (' . $DB->sql_like('b.name', '?', false) . ') ';
830 $params[] = "%$search%";
833 $sql .= ' AND (bi.visible = 1) ';
836 if ($courseid != 0) {
837 $sql .= ' AND (b.courseid = ' . $courseid . ') ';
839 $sql .= ' ORDER BY bi.dateissued DESC';
840 $badges = $DB->get_records_sql($sql, $params, $page * $perpage, $perpage);
846 * Extends the course administration navigation with the Badges page
848 * @param navigation_node $coursenode
849 * @param object $course
851 function badges_add_course_navigation(navigation_node $coursenode, stdClass $course) {
854 $coursecontext = context_course::instance($course->id);
855 $isfrontpage = (!$coursecontext || $course->id == $SITE->id);
856 $canmanage = has_any_capability(array('moodle/badges:viewawarded',
857 'moodle/badges:createbadge',
858 'moodle/badges:awardbadge',
859 'moodle/badges:configurecriteria',
860 'moodle/badges:configuremessages',
861 'moodle/badges:configuredetails',
862 'moodle/badges:deletebadge'), $coursecontext);
864 if (!empty($CFG->enablebadges) && !empty($CFG->badges_allowcoursebadges) && !$isfrontpage && $canmanage) {
865 $coursenode->add(get_string('coursebadges', 'badges'), null,
866 navigation_node::TYPE_CONTAINER, null, 'coursebadges',
867 new pix_icon('i/badge', get_string('coursebadges', 'badges')));
869 $url = new moodle_url('/badges/index.php', array('type' => BADGE_TYPE_COURSE, 'id' => $course->id));
871 $coursenode->get('coursebadges')->add(get_string('managebadges', 'badges'), $url,
872 navigation_node::TYPE_SETTING, null, 'coursebadges');
874 if (has_capability('moodle/badges:createbadge', $coursecontext)) {
875 $url = new moodle_url('/badges/newbadge.php', array('type' => BADGE_TYPE_COURSE, 'id' => $course->id));
877 $coursenode->get('coursebadges')->add(get_string('newbadge', 'badges'), $url,
878 navigation_node::TYPE_SETTING, null, 'newbadge');
884 * Triggered when badge is manually awarded.
886 * @param object $data
889 function badges_award_handle_manual_criteria_review(stdClass $data) {
890 $criteria = $data->crit;
891 $userid = $data->userid;
892 $badge = new badge($criteria->badgeid);
894 if (!$badge->is_active() || $badge->is_issued($userid)) {
898 if ($criteria->review($userid)) {
899 $criteria->mark_complete($userid);
901 if ($badge->criteria[BADGE_CRITERIA_TYPE_OVERALL]->review($userid)) {
902 $badge->criteria[BADGE_CRITERIA_TYPE_OVERALL]->mark_complete($userid);
903 $badge->issue($userid);
911 * Process badge image from form data
913 * @param badge $badge Badge object
914 * @param string $iconfile Original file
916 function badges_process_badge_image(badge $badge, $iconfile) {
918 require_once($CFG->libdir. '/gdlib.php');
920 if (!empty($CFG->gdversion)) {
921 process_new_icon($badge->get_context(), 'badges', 'badgeimage', $badge->id, $iconfile);
924 // Clean up file draft area after badge image has been saved.
925 $context = context_user::instance($USER->id, MUST_EXIST);
926 $fs = get_file_storage();
927 $fs->delete_area_files($context->id, 'user', 'draft');
934 * @param badge $badge Badge object
935 * @param stdClass $context
936 * @param string $size
938 function print_badge_image(badge $badge, stdClass $context, $size = 'small') {
939 $fsize = ($size == 'small') ? 'f2' : 'f1';
941 $imageurl = moodle_url::make_pluginfile_url($context->id, 'badges', 'badgeimage', $badge->id, '/', $fsize, false);
942 // Appending a random parameter to image link to forse browser reload the image.
943 $imageurl->param('refresh', rand(1, 10000));
944 $attributes = array('src' => $imageurl, 'alt' => s($badge->name), 'class' => 'activatebadge');
946 return html_writer::empty_tag('img', $attributes);
952 * @param string $hash Unique hash of an issued badge.
953 * @param int $badgeid ID of the original badge.
954 * @param int $userid ID of badge recipient (optional).
955 * @param boolean $pathhash Return file pathhash instead of image url (optional).
956 * @return string|url Returns either new file path hash or new file URL
958 function badges_bake($hash, $badgeid, $userid = 0, $pathhash = false) {
960 require_once(dirname(dirname(__FILE__)) . '/badges/lib/bakerlib.php');
962 $badge = new badge($badgeid);
963 $badge_context = $badge->get_context();
964 $userid = ($userid) ? $userid : $USER->id;
965 $user_context = context_user::instance($userid);
967 $fs = get_file_storage();
968 if (!$fs->file_exists($user_context->id, 'badges', 'userbadge', $badge->id, '/', $hash . '.png')) {
969 if ($file = $fs->get_file($badge_context->id, 'badges', 'badgeimage', $badge->id, '/', 'f1.png')) {
970 $contents = $file->get_content();
972 $filehandler = new PNG_MetaDataHandler($contents);
973 $assertion = new moodle_url('/badges/assertion.php', array('b' => $hash));
974 if ($filehandler->check_chunks("tEXt", "openbadges")) {
975 // Add assertion URL tExt chunk.
976 $newcontents = $filehandler->add_chunks("tEXt", "openbadges", $assertion->out(false));
978 'contextid' => $user_context->id,
979 'component' => 'badges',
980 'filearea' => 'userbadge',
981 'itemid' => $badge->id,
983 'filename' => $hash . '.png',
986 // Create a file with added contents.
987 $newfile = $fs->create_file_from_string($fileinfo, $newcontents);
989 return $newfile->get_pathnamehash();
993 debugging('Error baking badge image!', DEBUG_DEVELOPER);
998 // If file exists and we just need its path hash, return it.
1000 $file = $fs->get_file($user_context->id, 'badges', 'userbadge', $badge->id, '/', $hash . '.png');
1001 return $file->get_pathnamehash();
1004 $fileurl = moodle_url::make_pluginfile_url($user_context->id, 'badges', 'userbadge', $badge->id, '/', $hash, true);
1009 * Returns external backpack settings and badges from this backpack.
1011 * This function first checks if badges for the user are cached and
1012 * tries to retrieve them from the cache. Otherwise, badges are obtained
1013 * through curl request to the backpack.
1015 * @param int $userid Backpack user ID.
1016 * @param boolean $refresh Refresh badges collection in cache.
1017 * @return null|object Returns null is there is no backpack or object with backpack settings.
1019 function get_backpack_settings($userid, $refresh = false) {
1021 require_once(dirname(dirname(__FILE__)) . '/badges/lib/backpacklib.php');
1023 // Try to get badges from cache first.
1024 $badgescache = cache::make('core', 'externalbadges');
1025 $out = $badgescache->get($userid);
1026 if ($out !== false && !$refresh) {
1029 // Get badges through curl request to the backpack.
1030 $record = $DB->get_record('badge_backpack', array('userid' => $userid));
1032 $backpack = new OpenBadgesBackpackHandler($record);
1033 $out = new stdClass();
1034 $out->backpackurl = $backpack->get_url();
1036 if ($collections = $DB->get_records('badge_external', array('backpackid' => $record->id))) {
1037 $out->totalcollections = count($collections);
1038 $out->totalbadges = 0;
1039 $out->badges = array();
1040 foreach ($collections as $collection) {
1041 $badges = $backpack->get_badges($collection->collectionid);
1042 if (isset($badges->badges)) {
1043 $out->badges = array_merge($out->badges, $badges->badges);
1044 $out->totalbadges += count($out->badges);
1046 $out->badges = array_merge($out->badges, array());
1050 $out->totalbadges = 0;
1051 $out->totalcollections = 0;
1054 $badgescache->set($userid, $out);
1062 * Download all user badges in zip archive.
1064 * @param int $userid ID of badge owner.
1066 function badges_download($userid) {
1068 $context = context_user::instance($userid);
1069 $records = $DB->get_records('badge_issued', array('userid' => $userid));
1071 // Get list of files to download.
1072 $fs = get_file_storage();
1073 $filelist = array();
1074 foreach ($records as $issued) {
1075 $badge = new badge($issued->badgeid);
1076 // Need to make image name user-readable and unique using filename safe characters.
1077 $name = $badge->name . ' ' . userdate($issued->dateissued, '%d %b %Y') . ' ' . hash('crc32', $badge->id);
1078 $name = str_replace(' ', '_', $name);
1079 if ($file = $fs->get_file($context->id, 'badges', 'userbadge', $issued->badgeid, '/', $issued->uniquehash . '.png')) {
1080 $filelist[$name . '.png'] = $file;
1084 // Zip files and sent them to a user.
1085 $tempzip = tempnam($CFG->tempdir.'/', 'mybadges');
1086 $zipper = new zip_packer();
1087 if ($zipper->archive_to_pathname($filelist, $tempzip)) {
1088 send_temp_file($tempzip, 'badges.zip');
1090 debugging("Problems with archiving the files.");
1095 * Print badges on user profile page.
1097 * @param int $userid User ID.
1098 * @param int $courseid Course if we need to filter badges (optional).
1100 function profile_display_badges($userid, $courseid = 0) {
1101 global $CFG, $PAGE, $USER, $SITE;
1102 require_once($CFG->dirroot . '/badges/renderer.php');
1104 // Determine context.
1106 $context = context_user::instance($USER->id);
1108 $context = context_system::instance();
1111 if ($USER->id == $userid || has_capability('moodle/badges:viewotherbadges', $context)) {
1112 $records = badges_get_user_badges($userid, $courseid, null, null, null, true);
1113 $renderer = new core_badges_renderer($PAGE, '');
1115 // Print local badges.
1117 $left = get_string('localbadgesp', 'badges', format_string($SITE->fullname));
1118 $right = $renderer->print_badges_list($records, $userid, true);
1119 echo html_writer::tag('dt', $left);
1120 echo html_writer::tag('dd', $right);
1123 // Print external badges.
1124 if ($courseid == 0 && !empty($CFG->badges_allowexternalbackpack)) {
1125 $backpack = get_backpack_settings($userid);
1126 if (isset($backpack->totalbadges) && $backpack->totalbadges !== 0) {
1127 $left = get_string('externalbadgesp', 'badges');
1128 $right = $renderer->print_badges_list($backpack->badges, $userid, true, true);
1129 echo html_writer::tag('dt', $left);
1130 echo html_writer::tag('dd', $right);
1137 * Checks if badges can be pushed to external backpack.
1139 * @return string Code of backpack accessibility status.
1141 function badges_check_backpack_accessibility() {
1143 include_once $CFG->libdir . '/filelib.php';
1145 // Using fake assertion url to check whether backpack can access the web site.
1146 $fakeassertion = new moodle_url('/badges/assertion.php', array('b' => 'abcd1234567890'));
1148 // Curl request to http://backpack.openbadges.org/baker.
1151 'FRESH_CONNECT' => true,
1152 'RETURNTRANSFER' => true,
1154 'CONNECTTIMEOUT' => 2,
1156 $location = 'http://backpack.openbadges.org/baker';
1157 $out = $curl->get($location, array('assertion' => $fakeassertion->out(false)), $options);
1159 $data = json_decode($out);
1160 if (!empty($curl->error)) {
1161 return 'curl-request-timeout';
1163 if (isset($data->code) && $data->code == 'http-unreachable') {
1164 return 'http-unreachable';
1174 * Checks if user has external backpack connected.
1176 * @param int $userid ID of a user.
1177 * @return bool True|False whether backpack connection exists.
1179 function badges_user_has_backpack($userid) {
1181 return $DB->record_exists('badge_backpack', array('userid' => $userid));
1185 * Handles what happens to the course badges when a course is deleted.
1187 * @param int $courseid course ID.
1190 function badges_handle_course_deletion($courseid) {
1192 include_once $CFG->libdir . '/filelib.php';
1194 $systemcontext = context_system::instance();
1195 $coursecontext = context_course::instance($courseid);
1196 $fs = get_file_storage();
1198 // Move badges images to the system context.
1199 $fs->move_area_files_to_new_context($coursecontext->id, $systemcontext->id, 'badges', 'badgeimage');
1201 // Get all course badges.
1202 $badges = $DB->get_records('badge', array('type' => BADGE_TYPE_COURSE, 'courseid' => $courseid));
1203 foreach ($badges as $badge) {
1204 // Archive badges in this course.
1205 $toupdate = new stdClass();
1206 $toupdate->id = $badge->id;
1207 $toupdate->type = BADGE_TYPE_SITE;
1208 $toupdate->courseid = null;
1209 $toupdate->status = BADGE_STATUS_ARCHIVED;
1210 $DB->update_record('badge', $toupdate);
1215 * Loads JS files required for backpack support.
1220 function badges_setup_backpack_js() {
1222 if (!empty($CFG->badges_allowexternalbackpack)) {
1223 $PAGE->requires->string_for_js('error:backpackproblem', 'badges');
1224 $protocol = (strpos($CFG->wwwroot, 'https://') === 0) ? 'https://' : 'http://';
1225 $PAGE->requires->js(new moodle_url($protocol . 'backpack.openbadges.org/issuer.js'), true);
1226 $PAGE->requires->js('/badges/backpack.js', true);