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locallib.php
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locallib.php
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<?php
// This file is part of the Certificate module for Moodle - http://moodle.org/
//
// Moodle is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Moodle is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
/**
* Certificate module internal API,
* this is in separate file to reduce memory use on non-certificate pages.
*
* @package mod_certificate
* @copyright Mark Nelson <[email protected]>
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
defined('MOODLE_INTERNAL') || die();
require_once($CFG->dirroot.'/mod/certificate/lib.php');
require_once($CFG->dirroot.'/course/lib.php');
require_once($CFG->dirroot.'/grade/lib.php');
require_once($CFG->dirroot.'/grade/querylib.php');
/** The border image folder */
define('CERT_IMAGE_BORDER', 'borders');
/** The watermark image folder */
define('CERT_IMAGE_WATERMARK', 'watermarks');
/** The signature image folder */
define('CERT_IMAGE_SIGNATURE', 'signatures');
/** The seal image folder */
define('CERT_IMAGE_SEAL', 'seals');
/** Set CERT_PER_PAGE to 0 if you wish to display all certificates on the report page */
define('CERT_PER_PAGE', 30);
define('CERT_MAX_PER_PAGE', 200);
/**
* Returns a list of teachers by group
* for sending email alerts to teachers
*
* @param stdClass $certificate
* @param stdClass $user
* @param stdClass $course
* @param stdClass $cm
* @return array the teacher array
*/
function certificate_get_teachers($certificate, $user, $course, $cm) {
global $USER;
$context = context_module::instance($cm->id);
$potteachers = get_users_by_capability($context, 'mod/certificate:manage',
'', '', '', '', '', '', false, false);
if (empty($potteachers)) {
return array();
}
$teachers = array();
if (groups_get_activity_groupmode($cm, $course) == SEPARATEGROUPS) { // Separate groups are being used
if ($groups = groups_get_all_groups($course->id, $user->id)) { // Try to find all groups
foreach ($groups as $group) {
foreach ($potteachers as $t) {
if ($t->id == $user->id) {
continue; // do not send self
}
if (groups_is_member($group->id, $t->id)) {
$teachers[$t->id] = $t;
}
}
}
} else {
// user not in group, try to find teachers without group
foreach ($potteachers as $t) {
if ($t->id == $USER->id) {
continue; // do not send self
}
if (!groups_get_all_groups($course->id, $t->id)) { //ugly hack
$teachers[$t->id] = $t;
}
}
}
} else {
foreach ($potteachers as $t) {
if ($t->id == $USER->id) {
continue; // do not send self
}
$teachers[$t->id] = $t;
}
}
return $teachers;
}
/**
* Alerts teachers by email of received certificates. First checks
* whether the option to email teachers is set for this certificate.
*
* @param stdClass $course
* @param stdClass $certificate
* @param stdClass $certrecord
* @param stdClass $cm course module
*/
function certificate_email_teachers($course, $certificate, $certrecord, $cm) {
global $USER, $CFG, $DB;
if ($certificate->emailteachers == 0) { // No need to do anything
return;
}
$user = $DB->get_record('user', array('id' => $certrecord->userid));
if ($teachers = certificate_get_teachers($certificate, $user, $course, $cm)) {
$strawarded = get_string('awarded', 'certificate');
foreach ($teachers as $teacher) {
$info = new stdClass;
$info->student = fullname($USER);
$info->course = format_string($course->fullname,true);
$info->certificate = format_string($certificate->name,true);
$info->url = $CFG->wwwroot.'/mod/certificate/report.php?id='.$cm->id;
$from = $USER;
$postsubject = $strawarded . ': ' . $info->student . ' -> ' . $certificate->name;
$posttext = certificate_email_teachers_text($info);
$posthtml = ($teacher->mailformat == 1) ? certificate_email_teachers_html($info) : '';
@email_to_user($teacher, $from, $postsubject, $posttext, $posthtml); // If it fails, oh well, too bad.
}
}
}
/**
* Alerts others by email of received certificates. First checks
* whether the option to email others is set for this certificate.
* Uses the email_teachers info.
* Code suggested by Eloy Lafuente
*
* @param stdClass $course
* @param stdClass $certificate
* @param stdClass $certrecord
* @param stdClass $cm course module
*/
function certificate_email_others($course, $certificate, $certrecord, $cm) {
global $USER, $CFG;
if ($certificate->emailothers) {
$others = explode(',', $certificate->emailothers);
if ($others) {
$strawarded = get_string('awarded', 'certificate');
foreach ($others as $other) {
$other = trim($other);
if (validate_email($other)) {
$destination = new stdClass;
$destination->id = 1;
$destination->email = $other;
$info = new stdClass;
$info->student = fullname($USER);
$info->course = format_string($course->fullname, true);
$info->certificate = format_string($certificate->name, true);
$info->url = $CFG->wwwroot.'/mod/certificate/report.php?id='.$cm->id;
$from = $USER;
$postsubject = $strawarded . ': ' . $info->student . ' -> ' . $certificate->name;
$posttext = certificate_email_teachers_text($info);
$posthtml = certificate_email_teachers_html($info);
@email_to_user($destination, $from, $postsubject, $posttext, $posthtml); // If it fails, oh well, too bad.
}
}
}
}
}
/**
* Creates the text content for emails to teachers -- needs to be finished with cron
*
* @param $info object The info used by the 'emailteachermail' language string
* @return string
*/
function certificate_email_teachers_text($info) {
$posttext = get_string('emailteachermail', 'certificate', $info) . "\n";
return $posttext;
}
/**
* Creates the html content for emails to teachers
*
* @param $info object The info used by the 'emailteachermailhtml' language string
* @return string
*/
function certificate_email_teachers_html($info) {
$posthtml = '<font face="sans-serif">';
$posthtml .= '<p>' . get_string('emailteachermailhtml', 'certificate', $info) . '</p>';
$posthtml .= '</font>';
return $posthtml;
}
/**
* Sends the student their issued certificate from moddata as an email
* attachment.
*
* @param stdClass $course
* @param stdClass $certificate
* @param stdClass $certrecord
* @param stdClass $context
* @param string $filecontents the PDF file contents
* @param string $filename
* @return bool Returns true if mail was sent OK and false if there was an error.
*/
function certificate_email_student($course, $certificate, $certrecord, $context, $filecontents, $filename) {
global $USER;
// Get teachers
if ($users = get_users_by_capability($context, 'moodle/course:update', 'u.*', 'u.id ASC',
'', '', '', '', false, true)) {
$users = sort_by_roleassignment_authority($users, $context);
$teacher = array_shift($users);
}
// If we haven't found a teacher yet, look for a non-editing teacher in this course.
if (empty($teacher) && $users = get_users_by_capability($context, 'moodle/course:update', 'u.*', 'u.id ASC',
'', '', '', '', false, true)) {
$users = sort_by_roleassignment_authority($users, $context);
$teacher = array_shift($users);
}
// Ok, no teachers, use administrator name
if (empty($teacher)) {
$teacher = fullname(get_admin());
}
$info = new stdClass;
$info->username = fullname($USER);
$info->certificate = format_string($certificate->name, true);
$info->course = format_string($course->fullname, true);
$from = fullname($teacher);
$subject = $info->course . ': ' . $info->certificate;
$message = get_string('emailstudenttext', 'certificate', $info) . "\n";
// Make the HTML version more XHTML happy (&)
$messagehtml = text_to_html(get_string('emailstudenttext', 'certificate', $info));
$tempdir = make_temp_directory('certificate/attachment');
if (!$tempdir) {
return false;
}
$tempfile = $tempdir.'/'.md5(sesskey().microtime().$USER->id.'.pdf');
$fp = fopen($tempfile, 'w+');
fputs($fp, $filecontents);
fclose($fp);
$prevabort = ignore_user_abort(true);
$result = email_to_user($USER, $from, $subject, $message, $messagehtml, $tempfile, $filename);
@unlink($tempfile);
ignore_user_abort($prevabort);
return $result;
}
/**
* This function returns success or failure of file save
*
* @param string $pdf is the string contents of the pdf
* @param int $certrecordid the certificate issue record id
* @param string $filename pdf filename
* @param int $contextid context id
* @return bool return true if successful, false otherwise
*/
function certificate_save_pdf($pdf, $certrecordid, $filename, $contextid) {
global $USER;
if (empty($certrecordid)) {
return false;
}
if (empty($pdf)) {
return false;
}
$fs = get_file_storage();
// Prepare file record object
$component = 'mod_certificate';
$filearea = 'issue';
$filepath = '/';
$fileinfo = array(
'contextid' => $contextid, // ID of context
'component' => $component, // usually = table name
'filearea' => $filearea, // usually = table name
'itemid' => $certrecordid, // usually = ID of row in table
'filepath' => $filepath, // any path beginning and ending in /
'filename' => $filename, // any filename
'mimetype' => 'application/pdf', // any filename
'userid' => $USER->id);
// We do not know the previous file name, better delete everything here,
// luckily there is supposed to be always only one certificate here.
$fs->delete_area_files($contextid, $component, $filearea, $certrecordid);
$fs->create_file_from_string($fileinfo, $pdf);
return true;
}
/**
* Produces a list of links to the issued certificates. Used for report.
*
* @param stdClass $certificate
* @param int $userid
* @param int $contextid
* @return string return the user files
*/
function certificate_print_user_files($certificate, $userid, $contextid) {
global $CFG, $DB, $OUTPUT;
$output = '';
$certrecord = $DB->get_record('certificate_issues', array('userid' => $userid, 'certificateid' => $certificate->id));
$fs = get_file_storage();
$component = 'mod_certificate';
$filearea = 'issue';
$files = $fs->get_area_files($contextid, $component, $filearea, $certrecord->id);
foreach ($files as $file) {
$filename = $file->get_filename();
$link = file_encode_url($CFG->wwwroot.'/pluginfile.php', '/'.$contextid.'/mod_certificate/issue/'.$certrecord->id.'/'.$filename);
$output = '<img src="'.$OUTPUT->pix_url(file_mimetype_icon($file->get_mimetype())).'" height="16" width="16" alt="'.$file->get_mimetype().'" /> '.
'<a href="'.$link.'" >'.s($filename).'</a>';
}
$output .= '<br />';
$output = '<div class="files">'.$output.'</div>';
return $output;
}
/**
* Inserts preliminary user data when a certificate is viewed.
* Prevents form from issuing a certificate upon browser refresh.
*
* @param stdClass $course
* @param stdClass $user
* @param stdClass $certificate
* @param stdClass $cm
* @return stdClass the newly created certificate issue
*/
function certificate_get_issue($course, $user, $certificate, $cm) {
global $DB;
// Check if there is an issue already, should only ever be one
if ($certissue = $DB->get_record('certificate_issues', array('userid' => $user->id, 'certificateid' => $certificate->id))) {
return $certissue;
}
// Create new certificate issue record
$certissue = new stdClass();
$certissue->certificateid = $certificate->id;
$certissue->userid = $user->id;
$certissue->code = certificate_generate_code();
$certissue->timecreated = time();
$certissue->id = $DB->insert_record('certificate_issues', $certissue);
// Email to the teachers and anyone else
certificate_email_teachers($course, $certificate, $certissue, $cm);
certificate_email_others($course, $certificate, $certissue, $cm);
return $certissue;
}
/**
* Returns a list of issued certificates - sorted for report.
*
* @param int $certificateid
* @param string $sort the sort order
* @param bool $groupmode are we in group mode ?
* @param stdClass $cm the course module
* @param int $page offset
* @param int $perpage total per page
* @return stdClass the users
*/
function certificate_get_issues($certificateid, $sort="ci.timecreated ASC", $groupmode, $cm, $page = 0, $perpage = 0) {
global $DB, $USER;
$context = context_module::instance($cm->id);
$conditionssql = '';
$conditionsparams = array();
// Get all users that can manage this certificate to exclude them from the report.
$certmanagers = array_keys(get_users_by_capability($context, 'mod/certificate:manage', 'u.id'));
$certmanagers = array_merge($certmanagers, array_keys(get_admins()));
list($sql, $params) = $DB->get_in_or_equal($certmanagers, SQL_PARAMS_NAMED, 'cert');
$conditionssql .= "AND NOT u.id $sql \n";
$conditionsparams += $params;
if ($groupmode) {
$canaccessallgroups = has_capability('moodle/site:accessallgroups', $context);
$currentgroup = groups_get_activity_group($cm);
// If we are viewing all participants and the user does not have access to all groups then return nothing.
if (!$currentgroup && !$canaccessallgroups) {
return array();
}
if ($currentgroup) {
if (!$canaccessallgroups) {
// Guest users do not belong to any groups.
if (isguestuser()) {
return array();
}
// Check that the user belongs to the group we are viewing.
$usersgroups = groups_get_all_groups($cm->course, $USER->id, $cm->groupingid);
if ($usersgroups) {
if (!isset($usersgroups[$currentgroup])) {
return array();
}
} else { // They belong to no group, so return an empty array.
return array();
}
}
$groupusers = array_keys(groups_get_members($currentgroup, 'u.*'));
if (empty($groupusers)) {
return array();
}
list($sql, $params) = $DB->get_in_or_equal($groupusers, SQL_PARAMS_NAMED, 'grp');
$conditionssql .= "AND u.id $sql ";
$conditionsparams += $params;
}
}
$page = (int) $page;
$perpage = (int) $perpage;
// Get all the users that have certificates issued, should only be one issue per user for a certificate
$allparams = $conditionsparams + array('certificateid' => $certificateid);
// The picture fields also include the name fields for the user.
$picturefields = user_picture::fields('u', get_extra_user_fields($context));
$users = $DB->get_records_sql("SELECT $picturefields, u.idnumber, ci.code, ci.timecreated
FROM {user} u
INNER JOIN {certificate_issues} ci
ON u.id = ci.userid
WHERE u.deleted = 0
AND ci.certificateid = :certificateid $conditionssql
ORDER BY {$sort}", $allparams, $page * $perpage, $perpage);
return $users;
}
/**
* Returns a list of previously issued certificates--used for reissue.
*
* @param int $certificateid
* @return stdClass the attempts else false if none found
*/
function certificate_get_attempts($certificateid) {
global $DB, $USER;
$sql = "SELECT *
FROM {certificate_issues} i
WHERE certificateid = :certificateid
AND userid = :userid";
if ($issues = $DB->get_records_sql($sql, array('certificateid' => $certificateid, 'userid' => $USER->id))) {
return $issues;
}
return false;
}
/**
* Prints a table of previously issued certificates--used for reissue.
*
* @param stdClass $course
* @param stdClass $certificate
* @param stdClass $attempts
* @return string the attempt table
*/
function certificate_print_attempts($course, $certificate, $attempts) {
global $OUTPUT;
echo $OUTPUT->heading(get_string('summaryofattempts', 'certificate'));
// Prepare table header
$table = new html_table();
$table->class = 'generaltable';
$table->head = array(get_string('issued', 'certificate'));
$table->align = array('left');
$table->attributes = array("style" => "width:20%; margin:auto");
$gradecolumn = $certificate->printgrade;
if ($gradecolumn) {
$table->head[] = get_string('grade');
$table->align[] = 'center';
$table->size[] = '';
}
// One row for each attempt
foreach ($attempts as $attempt) {
$row = array();
// prepare strings for time taken and date completed
$datecompleted = userdate($attempt->timecreated);
$row[] = $datecompleted;
if ($gradecolumn) {
$attemptgrade = certificate_get_grade($certificate, $course);
$row[] = $attemptgrade;
}
$table->data[$attempt->id] = $row;
}
echo html_writer::table($table);
}
/**
* Get the time the user has spent in the course
*
* @param int $courseid
* @return int the total time spent in seconds
*/
function certificate_get_course_time($courseid) {
global $CFG, $DB, $USER;
$logmanager = get_log_manager();
$readers = $logmanager->get_readers();
$enabledreaders = get_config('tool_log', 'enabled_stores');
$enabledreaders = explode(',', $enabledreaders);
// Go through all the readers until we find one that we can use.
foreach ($enabledreaders as $enabledreader) {
$reader = $readers[$enabledreader];
if ($reader instanceof \logstore_legacy\log\store) {
$logtable = 'log';
$coursefield = 'course';
$timefield = 'time';
break;
} else if ($reader instanceof \core\log\sql_internal_table_reader) {
$logtable = $reader->get_internal_log_table_name();
$coursefield = 'courseid';
$timefield = 'timecreated';
break;
}
}
// If we didn't find a reader then return 0.
if (!isset($logtable)) {
return 0;
}
$sql = "SELECT id, $timefield
FROM {{$logtable}}
WHERE userid = :userid
AND $coursefield = :courseid
ORDER BY $timefield ASC";
$params = array('userid' => $USER->id, 'courseid' => $courseid);
$totaltime = 0;
if ($logs = $DB->get_recordset_sql($sql, $params)) {
foreach ($logs as $log) {
if (!isset($login)) {
// For the first time $login is not set so the first log is also the first login
$login = $log->$timefield;
$lasthit = $log->$timefield;
$totaltime = 0;
}
$delay = $log->$timefield - $lasthit;
if ($delay > ($CFG->sessiontimeout * 60)) {
// The difference between the last log and the current log is more than
// the timeout Register session value so that we have found a session!
$login = $log->$timefield;
} else {
$totaltime += $delay;
}
// Now the actual log became the previous log for the next cycle
$lasthit = $log->$timefield;
}
return $totaltime;
}
return 0;
}
/**
* Get all the modules
*
* @return array
*/
function certificate_get_mods() {
global $COURSE, $DB;
$strtopic = get_string("topic");
$strweek = get_string("week");
$strsection = get_string("section");
// Collect modules data
$modinfo = get_fast_modinfo($COURSE);
$mods = $modinfo->get_cms();
$modules = array();
$sections = $modinfo->get_section_info_all();
for ($i = 0; $i <= count($sections) - 1; $i++) {
// should always be true
if (isset($sections[$i])) {
$section = $sections[$i];
if ($section->sequence) {
switch ($COURSE->format) {
case "topics":
$sectionlabel = $strtopic;
break;
case "weeks":
$sectionlabel = $strweek;
break;
default:
$sectionlabel = $strsection;
}
$sectionmods = explode(",", $section->sequence);
foreach ($sectionmods as $sectionmod) {
if (empty($mods[$sectionmod])) {
continue;
}
$mod = $mods[$sectionmod];
$instance = $DB->get_record($mod->modname, array('id' => $mod->instance));
if ($grade_items = grade_get_grade_items_for_activity($mod)) {
$mod_item = grade_get_grades($COURSE->id, 'mod', $mod->modname, $mod->instance);
$item = reset($mod_item->items);
if (isset($item->grademax)){
$modules[$mod->id] = $sectionlabel . ' ' . $section->section . ' : ' . $instance->name;
}
}
}
}
}
}
return $modules;
}
/**
* Search through all the modules for grade data for mod_form.
*
* @return array
*/
function certificate_get_grade_options() {
$gradeoptions['0'] = get_string('no');
$gradeoptions['1'] = get_string('coursegrade', 'certificate');
return $gradeoptions;
}
/**
* Search through all the modules for grade dates for mod_form.
*
* @return array
*/
function certificate_get_date_options() {
$dateoptions['0'] = get_string('no');
$dateoptions['1'] = get_string('issueddate', 'certificate');
$dateoptions['2'] = get_string('completiondate', 'certificate');
return $dateoptions;
}
/**
* Fetch all grade categories from the specified course.
*
* @param int $courseid the course id
* @return array
*/
function certificate_get_grade_categories($courseid) {
$grade_category_options = array();
if ($grade_categories = grade_category::fetch_all(array('courseid' => $courseid))) {
foreach ($grade_categories as $grade_category) {
if (!$grade_category->is_course_category()) {
$grade_category_options[-$grade_category->id] = get_string('category') . ' : ' . $grade_category->get_name();
}
}
}
return $grade_category_options;
}
/**
* Get the course outcomes for for mod_form print outcome.
*
* @return array
*/
function certificate_get_outcomes() {
global $COURSE;
// get all outcomes in course
$grade_seq = new grade_tree($COURSE->id, false, true, '', false);
if ($grade_items = $grade_seq->items) {
// list of item for menu
$printoutcome = array();
foreach ($grade_items as $grade_item) {
if (isset($grade_item->outcomeid)){
$itemmodule = $grade_item->itemmodule;
$printoutcome[$grade_item->id] = $itemmodule . ': ' . $grade_item->get_name();
}
}
}
if (isset($printoutcome)) {
$outcomeoptions['0'] = get_string('no');
foreach ($printoutcome as $key => $value) {
$outcomeoptions[$key] = $value;
}
} else {
$outcomeoptions['0'] = get_string('nooutcomes', 'certificate');
}
return $outcomeoptions;
}
/**
* Get certificate types indexed and sorted by name for mod_form.
*
* @return array containing the certificate type
*/
function certificate_types() {
$types = array();
$names = get_list_of_plugins('mod/certificate/type');
$sm = get_string_manager();
foreach ($names as $name) {
if ($sm->string_exists('type'.$name, 'certificate')) {
$types[$name] = get_string('type'.$name, 'certificate');
} else {
$types[$name] = ucfirst($name);
}
}
asort($types);
return $types;
}
/**
* Get images for mod_form.
*
* @param string $type the image type
* @return array
*/
function certificate_get_images($type) {
global $CFG;
switch($type) {
case CERT_IMAGE_BORDER :
$path = "$CFG->dirroot/mod/certificate/pix/borders";
$uploadpath = "$CFG->dataroot/mod/certificate/pix/borders";
break;
case CERT_IMAGE_SEAL :
$path = "$CFG->dirroot/mod/certificate/pix/seals";
$uploadpath = "$CFG->dataroot/mod/certificate/pix/seals";
break;
case CERT_IMAGE_SIGNATURE :
$path = "$CFG->dirroot/mod/certificate/pix/signatures";
$uploadpath = "$CFG->dataroot/mod/certificate/pix/signatures";
break;
case CERT_IMAGE_WATERMARK :
$path = "$CFG->dirroot/mod/certificate/pix/watermarks";
$uploadpath = "$CFG->dataroot/mod/certificate/pix/watermarks";
break;
}
// If valid path
if (!empty($path)) {
$options = array();
$options += certificate_scan_image_dir($path);
$options += certificate_scan_image_dir($uploadpath);
// Sort images
ksort($options);
// Add the 'no' option to the top of the array
$options = array_merge(array('0' => get_string('no')), $options);
return $options;
} else {
return array();
}
}
/**
* Prepare to print an activity grade.
*
* @param stdClass $course
* @param int $moduleid
* @param int $userid
* @return stdClass|bool return the mod object if it exists, false otherwise
*/
function certificate_get_mod_grade($course, $moduleid, $userid) {
global $DB;
$cm = $DB->get_record('course_modules', array('id' => $moduleid));
$module = $DB->get_record('modules', array('id' => $cm->module));
$grade_item = grade_get_grades($course->id, 'mod', $module->name, $cm->instance, $userid);
if (!empty($grade_item)) {
$item = new grade_item();
$itemproperties = reset($grade_item->items);
foreach ($itemproperties as $key => $value) {
$item->$key = $value;
}
$modinfo = new stdClass;
$modname = $DB->get_field($module->name, 'name', array('id' => $cm->instance));
$modinfo->name = format_string($modname, true, array('context' => context_module::instance($cm->id)));
$grade = $item->grades[$userid]->grade;
$item->gradetype = GRADE_TYPE_VALUE;
$item->courseid = $course->id;
$modinfo->points = grade_format_gradevalue($grade, $item, true, GRADE_DISPLAY_TYPE_REAL, $decimals = 2);
$modinfo->percentage = grade_format_gradevalue($grade, $item, true, GRADE_DISPLAY_TYPE_PERCENTAGE, $decimals = 2);
$modinfo->letter = grade_format_gradevalue($grade, $item, true, GRADE_DISPLAY_TYPE_LETTER, $decimals = 0);
if ($grade) {
$modinfo->dategraded = $item->grades[$userid]->dategraded;
} else {
$modinfo->dategraded = time();
}
return $modinfo;
}
return false;
}
/**
* Returns the date to display for the certificate.
*
* @param stdClass $certificate
* @param stdClass $certrecord
* @param stdClass $course
* @param int $userid
* @return string the date
*/
function certificate_get_date($certificate, $certrecord, $course, $userid = null) {
global $DB, $USER;
if (empty($userid)) {
$userid = $USER->id;
}
// Set certificate date to current time, can be overwritten later
$date = $certrecord->timecreated;
if ($certificate->printdate == '2') {
// Get the enrolment end date
$sql = "SELECT MAX(c.timecompleted) as timecompleted
FROM {course_completions} c
WHERE c.userid = :userid
AND c.course = :courseid";
if ($timecompleted = $DB->get_record_sql($sql, array('userid' => $userid, 'courseid' => $course->id))) {
if (!empty($timecompleted->timecompleted)) {
$date = $timecompleted->timecompleted;
}
}
} else if ($certificate->printdate > 2) {
if ($modinfo = certificate_get_mod_grade($course, $certificate->printdate, $userid)) {
$date = $modinfo->dategraded;
}
}
if ($certificate->printdate > 0) {
if ($certificate->datefmt == 1) {
$certificatedate = userdate($date, '%B %d, %Y');
} else if ($certificate->datefmt == 2) {
$suffix = certificate_get_ordinal_number_suffix(userdate($date, '%d'));
$certificatedate = userdate($date, '%B %d' . $suffix . ', %Y');
} else if ($certificate->datefmt == 3) {
$certificatedate = userdate($date, '%d %B %Y');
} else if ($certificate->datefmt == 4) {
$certificatedate = userdate($date, '%B %Y');
} else if ($certificate->datefmt == 5) {
$certificatedate = userdate($date, get_string('strftimedate', 'langconfig'));
}
return $certificatedate;
}
return '';
}
/**
* Helper function to return the suffix of the day of
* the month, eg 'st' if it is the 1st of the month.
*
* @param int the day of the month
* @return string the suffix.
*/
function certificate_get_ordinal_number_suffix($day) {
if (!in_array(($day % 100), array(11, 12, 13))) {
switch ($day % 10) {
// Handle 1st, 2nd, 3rd
case 1: return 'st';
case 2: return 'nd';
case 3: return 'rd';
}
}
return 'th';
}
/**
* Returns the grade to display for the certificate.
*
* @param stdClass $certificate
* @param stdClass $course
* @param int $userid
* @param bool $valueonly if true return only the points, %age, or letter with no prefix
* @return string the grade result
*/
function certificate_get_grade($certificate, $course, $userid = null, $valueonly = false) {
global $USER;
if (empty($userid)) {
$userid = $USER->id;
}
if ($certificate->printgrade > 0) {
if ($certificate->printgrade == 1) {
if ($course_item = grade_item::fetch_course_item($course->id)) {
// Check we want to add a prefix to the grade.
$strprefix = '';
if (!$valueonly) {
$strprefix = get_string('coursegrade', 'certificate') . ': ';
}
$grade = new grade_grade(array('itemid' => $course_item->id, 'userid' => $userid));
$course_item->gradetype = GRADE_TYPE_VALUE;
$coursegrade = new stdClass;
$coursegrade->points = grade_format_gradevalue($grade->finalgrade, $course_item, true, GRADE_DISPLAY_TYPE_REAL, $decimals = 2);
$coursegrade->percentage = grade_format_gradevalue($grade->finalgrade, $course_item, true, GRADE_DISPLAY_TYPE_PERCENTAGE, $decimals = 2);
$coursegrade->letter = grade_format_gradevalue($grade->finalgrade, $course_item, true, GRADE_DISPLAY_TYPE_LETTER, $decimals = 0);
if ($certificate->gradefmt == 1) {
$grade = $strprefix . $coursegrade->percentage;
} else if ($certificate->gradefmt == 2) {
$grade = $strprefix . $coursegrade->points;
} else if ($certificate->gradefmt == 3) {
$grade = $strprefix . $coursegrade->letter;
}
return $grade;
}
} else { // Print the mod grade
if ($modinfo = certificate_get_mod_grade($course, $certificate->printgrade, $userid)) {
// Check we want to add a prefix to the grade.
$strprefix = '';
if (!$valueonly) {
$strprefix = $modinfo->name . ' ' . get_string('grade', 'certificate') . ': ';
}
if ($certificate->gradefmt == 1) {
$grade = $strprefix . $modinfo->percentage;
} else if ($certificate->gradefmt == 2) {
$grade = $strprefix . $modinfo->points;
} else if ($certificate->gradefmt == 3) {
$grade = $strprefix . $modinfo->letter;
}
return $grade;
}
}
} else if ($certificate->printgrade < 0) { // Must be a category id.
if ($category_item = grade_item::fetch(array('itemtype' => 'category', 'iteminstance' => -$certificate->printgrade))) {
$category_item->gradetype = GRADE_TYPE_VALUE;
$grade = new grade_grade(array('itemid' => $category_item->id, 'userid' => $userid));
$category_grade = new stdClass;
$category_grade->points = grade_format_gradevalue($grade->finalgrade, $category_item, true, GRADE_DISPLAY_TYPE_REAL, $decimals = 2);
$category_grade->percentage = grade_format_gradevalue($grade->finalgrade, $category_item, true, GRADE_DISPLAY_TYPE_PERCENTAGE, $decimals = 2);
$category_grade->letter = grade_format_gradevalue($grade->finalgrade, $category_item, true, GRADE_DISPLAY_TYPE_LETTER, $decimals = 0);
if ($certificate->gradefmt == 1) {
$formattedgrade = $category_grade->percentage;
} else if ($certificate->gradefmt == 2) {
$formattedgrade = $category_grade->points;
} else if ($certificate->gradefmt == 3) {
$formattedgrade = $category_grade->letter;
}
return $formattedgrade;
}
}
return '';
}
/**
* Returns the outcome to display on the certificate
*