forked from danmarsden/moodle-mod_attendance
-
Notifications
You must be signed in to change notification settings - Fork 0
/
locallib.php
1044 lines (934 loc) · 37 KB
/
locallib.php
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
<?php
// This file is part of 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/>.
/**
* local functions and constants for module attendance
*
* @package mod_attendance
* @copyright 2011 Artem Andreev <[email protected]>
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
defined('MOODLE_INTERNAL') || die();
require_once($CFG->libdir . '/gradelib.php');
require_once(dirname(__FILE__).'/renderhelpers.php');
define('ATT_VIEW_DAYS', 1);
define('ATT_VIEW_WEEKS', 2);
define('ATT_VIEW_MONTHS', 3);
define('ATT_VIEW_ALLPAST', 4);
define('ATT_VIEW_ALL', 5);
define('ATT_VIEW_NOTPRESENT', 6);
define('ATT_VIEW_SUMMARY', 7);
define('ATT_SORT_DEFAULT', 0);
define('ATT_SORT_LASTNAME', 1);
define('ATT_SORT_FIRSTNAME', 2);
define('ATTENDANCE_AUTOMARK_DISABLED', 0);
define('ATTENDANCE_AUTOMARK_ALL', 1);
define('ATTENDANCE_AUTOMARK_CLOSE', 2);
define('ATTENDANCE_SHAREDIP_DISABLED', 0);
define('ATTENDANCE_SHAREDIP_MINUTES', 1);
define('ATTENDANCE_SHAREDIP_FORCE', 2);
// Max number of sessions available in the warnings set form to trigger warnings.
define('ATTENDANCE_MAXWARNAFTER', 100);
/**
* Get statuses,
*
* @param int $attid
* @param bool $onlyvisible
* @param int $statusset
* @return array
*/
function attendance_get_statuses($attid, $onlyvisible=true, $statusset = -1) {
global $DB;
// Set selector.
$params = array('aid' => $attid);
$setsql = '';
if ($statusset >= 0) {
$params['statusset'] = $statusset;
$setsql = ' AND setnumber = :statusset ';
}
if ($onlyvisible) {
$statuses = $DB->get_records_select('attendance_statuses', "attendanceid = :aid AND visible = 1 AND deleted = 0 $setsql",
$params, 'setnumber ASC, grade DESC');
} else {
$statuses = $DB->get_records_select('attendance_statuses', "attendanceid = :aid AND deleted = 0 $setsql",
$params, 'setnumber ASC, grade DESC');
}
return $statuses;
}
/**
* Get the name of the status set.
*
* @param int $attid
* @param int $statusset
* @param bool $includevalues
* @return string
*/
function attendance_get_setname($attid, $statusset, $includevalues = true) {
$statusname = get_string('statusset', 'mod_attendance', $statusset + 1);
if ($includevalues) {
$statuses = attendance_get_statuses($attid, true, $statusset);
$statusesout = array();
foreach ($statuses as $status) {
$statusesout[] = $status->acronym;
}
if ($statusesout) {
if (count($statusesout) > 6) {
$statusesout = array_slice($statusesout, 0, 6);
$statusesout[] = '...';
}
$statusesout = implode(' ', $statusesout);
$statusname .= ' ('.$statusesout.')';
}
}
return $statusname;
}
/**
* Get users courses and the relevant attendances.
*
* @param int $userid
* @return array
*/
function attendance_get_user_courses_attendances($userid) {
global $DB;
$usercourses = enrol_get_users_courses($userid);
list($usql, $uparams) = $DB->get_in_or_equal(array_keys($usercourses), SQL_PARAMS_NAMED, 'cid0');
$sql = "SELECT att.id as attid, att.course as courseid, course.fullname as coursefullname,
course.startdate as coursestartdate, att.name as attname, att.grade as attgrade
FROM {attendance} att
JOIN {course} course
ON att.course = course.id
WHERE att.course $usql
ORDER BY coursefullname ASC, attname ASC";
$params = array_merge($uparams, array('uid' => $userid));
return $DB->get_records_sql($sql, $params);
}
/**
* Used to calculate a fraction based on the part and total values
*
* @param float $part - part of the total value
* @param float $total - total value.
* @return float the calculated fraction.
*/
function attendance_calc_fraction($part, $total) {
if ($total == 0) {
return 0;
} else {
return $part / $total;
}
}
/**
* Check to see if statusid in use to help prevent deletion etc.
*
* @param integer $statusid
*/
function attendance_has_logs_for_status($statusid) {
global $DB;
return $DB->record_exists('attendance_log', array('statusid' => $statusid));
}
/**
* Helper function to add sessiondate_selector to add/update forms.
*
* @param MoodleQuickForm $mform
*/
function attendance_form_sessiondate_selector (MoodleQuickForm $mform) {
$mform->addElement('date_selector', 'sessiondate', get_string('sessiondate', 'attendance'));
for ($i = 0; $i <= 23; $i++) {
$hours[$i] = sprintf("%02d", $i);
}
for ($i = 0; $i < 60; $i += 5) {
$minutes[$i] = sprintf("%02d", $i);
}
$sesendtime = array();
$sesendtime[] =& $mform->createElement('static', 'from', '', get_string('from', 'attendance'));
$sesendtime[] =& $mform->createElement('select', 'starthour', get_string('hour', 'form'), $hours, false, true);
$sesendtime[] =& $mform->createElement('select', 'startminute', get_string('minute', 'form'), $minutes, false, true);
$sesendtime[] =& $mform->createElement('static', 'to', '', get_string('to', 'attendance'));
$sesendtime[] =& $mform->createElement('select', 'endhour', get_string('hour', 'form'), $hours, false, true);
$sesendtime[] =& $mform->createElement('select', 'endminute', get_string('minute', 'form'), $minutes, false, true);
$mform->addGroup($sesendtime, 'sestime', get_string('time', 'attendance'), array(' '), true);
}
/**
* Count the number of status sets that exist for this instance.
*
* @param int $attendanceid
* @return int
*/
function attendance_get_max_statusset($attendanceid) {
global $DB;
$max = $DB->get_field_sql('SELECT MAX(setnumber) FROM {attendance_statuses} WHERE attendanceid = ? AND deleted = 0',
array($attendanceid));
if ($max) {
return $max;
}
return 0;
}
/**
* Returns the maxpoints for each statusset
*
* @param array $statuses
* @return array
*/
function attendance_get_statusset_maxpoints($statuses) {
$statussetmaxpoints = array();
foreach ($statuses as $st) {
if (!isset($statussetmaxpoints[$st->setnumber])) {
$statussetmaxpoints[$st->setnumber] = $st->grade;
}
}
return $statussetmaxpoints;
}
/**
* Update user grades
*
* @param mod_attendance_structure|stdClass $attendance
* @param array $userids
*/
function attendance_update_users_grade($attendance, $userids=array()) {
global $DB;
if (empty($attendance->grade)) {
return false;
}
list($course, $cm) = get_course_and_cm_from_instance($attendance->id, 'attendance');
$summary = new mod_attendance_summary($attendance->id, $userids);
if (empty($userids)) {
$context = context_module::instance($cm->id);
$userids = array_keys(get_enrolled_users($context, 'mod/attendance:canbelisted', 0, 'u.id'));
}
if ($attendance->grade < 0) {
$dbparams = array('id' => -($attendance->grade));
$scale = $DB->get_record('scale', $dbparams);
$scalearray = explode(',', $scale->scale);
$attendancegrade = count($scalearray);
} else {
$attendancegrade = $attendance->grade;
}
$grades = array();
foreach ($userids as $userid) {
$grades[$userid] = new stdClass();
$grades[$userid]->userid = $userid;
if ($summary->has_taken_sessions($userid)) {
$usersummary = $summary->get_taken_sessions_summary_for($userid);
$grades[$userid]->rawgrade = $usersummary->takensessionspercentage * $attendancegrade;
} else {
$grades[$userid]->rawgrade = null;
}
}
return grade_update('mod/attendance', $course->id, 'mod', 'attendance', $attendance->id, 0, $grades);
}
/**
* Add an attendance status variable
*
* @param stdClass $status
* @return bool
*/
function attendance_add_status($status) {
global $DB;
if (empty($status->context)) {
$status->context = context_system::instance();
}
if (!empty($status->acronym) && !empty($status->description)) {
$status->deleted = 0;
$status->visible = 1;
$status->setunmarked = 0;
$id = $DB->insert_record('attendance_statuses', $status);
$status->id = $id;
$event = \mod_attendance\event\status_added::create(array(
'objectid' => $status->attendanceid,
'context' => $status->context,
'other' => array('acronym' => $status->acronym,
'description' => $status->description,
'grade' => $status->grade)));
if (!empty($status->cm)) {
$event->add_record_snapshot('course_modules', $status->cm);
}
$event->add_record_snapshot('attendance_statuses', $status);
$event->trigger();
return true;
} else {
return false;
}
}
/**
* Remove a status variable from an attendance instance
*
* @param stdClass $status
* @param stdClass $context
* @param stdClass $cm
*/
function attendance_remove_status($status, $context = null, $cm = null) {
global $DB;
if (empty($context)) {
$context = context_system::instance();
}
$DB->set_field('attendance_statuses', 'deleted', 1, array('id' => $status->id));
$event = \mod_attendance\event\status_removed::create(array(
'objectid' => $status->id,
'context' => $context,
'other' => array(
'acronym' => $status->acronym,
'description' => $status->description
)));
if (!empty($cm)) {
$event->add_record_snapshot('course_modules', $cm);
}
$event->add_record_snapshot('attendance_statuses', $status);
$event->trigger();
}
/**
* Update status variable for a particular Attendance module instance
*
* @param stdClass $status
* @param string $acronym
* @param string $description
* @param int $grade
* @param bool $visible
* @param stdClass $context
* @param stdClass $cm
* @param int $studentavailability
* @param bool $setunmarked
* @return array
*/
function attendance_update_status($status, $acronym, $description, $grade, $visible,
$context = null, $cm = null, $studentavailability = null, $setunmarked = false) {
global $DB;
if (empty($context)) {
$context = context_system::instance();
}
if (isset($visible)) {
$status->visible = $visible;
$updated[] = $visible ? get_string('show') : get_string('hide');
} else if (empty($acronym) || empty($description)) {
return array('acronym' => $acronym, 'description' => $description);
}
$updated = array();
if ($acronym) {
$status->acronym = $acronym;
$updated[] = $acronym;
}
if ($description) {
$status->description = $description;
$updated[] = $description;
}
if (isset($grade)) {
$status->grade = $grade;
$updated[] = $grade;
}
if (isset($studentavailability)) {
if (empty($studentavailability)) {
if ($studentavailability !== '0') {
$studentavailability = null;
}
}
$status->studentavailability = $studentavailability;
$updated[] = $studentavailability;
}
if ($setunmarked) {
$status->setunmarked = 1;
} else {
$status->setunmarked = 0;
}
$DB->update_record('attendance_statuses', $status);
$event = \mod_attendance\event\status_updated::create(array(
'objectid' => $status->attendanceid,
'context' => $context,
'other' => array('acronym' => $acronym, 'description' => $description, 'grade' => $grade,
'updated' => implode(' ', $updated))));
if (!empty($cm)) {
$event->add_record_snapshot('course_modules', $cm);
}
$event->add_record_snapshot('attendance_statuses', $status);
$event->trigger();
}
/**
* Similar to core random_string function but only lowercase letters.
* designed to make it relatively easy to provide a simple password in class.
*
* @param int $length The length of the string to be created.
* @return string
*/
function attendance_random_string($length=6) {
$randombytes = random_bytes_emulate($length);
$pool = 'abcdefghijklmnopqrstuvwxyz';
$pool .= '0123456789';
$poollen = strlen($pool);
$string = '';
for ($i = 0; $i < $length; $i++) {
$rand = ord($randombytes[$i]);
$string .= substr($pool, ($rand % ($poollen)), 1);
}
return $string;
}
/**
* Check to see if this session is open for student marking.
*
* @param stdclass $sess the session record from attendance_sessions.
* @param boolean $log - if student cannot mark, generate log event.
* @return array (boolean, string reason for failure)
*/
function attendance_can_student_mark($sess, $log = true) {
global $DB, $USER, $OUTPUT;
$canmark = false;
$reason = 'closed';
$attconfig = get_config('attendance');
if (!empty($attconfig->studentscanmark) && !empty($sess->studentscanmark)) {
if (empty($attconfig->studentscanmarksessiontime)) {
$canmark = true;
$reason = '';
} else {
$duration = $sess->duration;
if (empty($duration)) {
$duration = $attconfig->studentscanmarksessiontimeend * 60;
}
if ($sess->sessdate < time() && time() < ($sess->sessdate + $duration)) {
$canmark = true;
$reason = '';
}
}
}
// Check if another student has marked attendance from this IP address recently.
if ($canmark && !empty($sess->preventsharedip)) {
if ($sess->preventsharedip == ATTENDANCE_SHAREDIP_MINUTES) {
$time = time() - ($sess->preventsharediptime * 60);
$sql = 'sessionid = ? AND studentid <> ? AND timetaken > ? AND ipaddress = ?';
$params = array($sess->id, $USER->id, $time, getremoteaddr());
$record = $DB->get_record_select('attendance_log', $sql, $params);
} else {
// Assume ATTENDANCE_SHAREDIP_FORCED.
$sql = 'sessionid = ? AND studentid <> ? ipaddress = ?';
$params = array($sess->id, $USER->id, getremoteaddr());
$record = $DB->get_record_select('attendance_log', $sql, $params);
}
if (!empty($record)) {
$canmark = false;
$reason = 'preventsharederror';
if ($log) {
// Trigger an ip_shared event.
$attendanceid = $DB->get_field('attendance_sessions', 'attendanceid', array('id' => $record->sessionid));
$cm = get_coursemodule_from_instance('attendance', $attendanceid);
$event = \mod_attendance\event\session_ip_shared::create(array(
'objectid' => 0,
'context' => \context_module::instance($cm->id),
'other' => array(
'sessionid' => $record->sessionid,
'otheruser' => $record->studentid
)
));
$event->trigger();
}
}
}
return array($canmark, $reason);
}
/**
* Generate worksheet for Attendance export
*
* @param stdclass $data The data for the report
* @param string $filename The name of the file
* @param string $format excel|ods
*
*/
function attendance_exporttotableed($data, $filename, $format) {
global $CFG;
if ($format === 'excel') {
require_once("$CFG->libdir/excellib.class.php");
$filename .= ".xls";
$workbook = new MoodleExcelWorkbook("-");
} else {
require_once("$CFG->libdir/odslib.class.php");
$filename .= ".ods";
$workbook = new MoodleODSWorkbook("-");
}
// Sending HTTP headers.
$workbook->send($filename);
// Creating the first worksheet.
$myxls = $workbook->add_worksheet('Attendances');
// Format types.
$formatbc = $workbook->add_format();
$formatbc->set_bold(1);
$myxls->write(0, 0, get_string('course'), $formatbc);
$myxls->write(0, 1, $data->course);
$myxls->write(1, 0, get_string('group'), $formatbc);
$myxls->write(1, 1, $data->group);
$i = 3;
$j = 0;
foreach ($data->tabhead as $cell) {
// Merge cells if the heading would be empty (remarks column).
if (empty($cell)) {
$myxls->merge_cells($i, $j - 1, $i, $j);
} else {
$myxls->write($i, $j, $cell, $formatbc);
}
$j++;
}
$i++;
$j = 0;
foreach ($data->table as $row) {
foreach ($row as $cell) {
$myxls->write($i, $j++, $cell);
}
$i++;
$j = 0;
}
$workbook->close();
}
/**
* Generate csv for Attendance export
*
* @param stdclass $data The data for the report
* @param string $filename The name of the file
*
*/
function attendance_exporttocsv($data, $filename) {
$filename .= ".txt";
header("Content-Type: application/download\n");
header("Content-Disposition: attachment; filename=\"$filename\"");
header("Expires: 0");
header("Cache-Control: must-revalidate,post-check=0,pre-check=0");
header("Pragma: public");
echo get_string('course')."\t".$data->course."\n";
echo get_string('group')."\t".$data->group."\n\n";
echo implode("\t", $data->tabhead)."\n";
foreach ($data->table as $row) {
echo implode("\t", $row)."\n";
}
}
/**
* Get session data for form.
* @param stdClass $formdata moodleform - attendance form.
* @param mod_attendance_structure $att - used to get attendance level subnet.
* @return array.
*/
function attendance_construct_sessions_data_for_add($formdata, mod_attendance_structure $att) {
global $CFG;
$sesstarttime = $formdata->sestime['starthour'] * HOURSECS + $formdata->sestime['startminute'] * MINSECS;
$sesendtime = $formdata->sestime['endhour'] * HOURSECS + $formdata->sestime['endminute'] * MINSECS;
$sessiondate = $formdata->sessiondate + $sesstarttime;
$duration = $sesendtime - $sesstarttime;
if (empty(get_config('attendance', 'enablewarnings'))) {
$absenteereport = get_config('attendance', 'absenteereport_default');
} else {
$absenteereport = empty($formdata->absenteereport) ? 0 : 1;
}
$now = time();
if (empty(get_config('attendance', 'studentscanmark'))) {
$formdata->studentscanmark = 0;
}
$calendarevent = 0;
if (isset($formdata->calendarevent)) { // Calendar event should be created.
$calendarevent = 1;
}
$sessions = array();
if (isset($formdata->addmultiply)) {
$startdate = $sessiondate;
$enddate = $formdata->sessionenddate + DAYSECS; // Because enddate in 0:0am.
if ($enddate < $startdate) {
return null;
}
// Getting first day of week.
$sdate = $startdate;
$dinfo = usergetdate($sdate);
if ($CFG->calendar_startwday === '0') { // Week start from sunday.
$startweek = $startdate - $dinfo['wday'] * DAYSECS; // Call new variable.
} else {
$wday = $dinfo['wday'] === 0 ? 7 : $dinfo['wday'];
$startweek = $startdate - ($wday - 1) * DAYSECS;
}
$wdaydesc = array(0 => 'Sun', 'Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat');
while ($sdate < $enddate) {
if ($sdate < $startweek + WEEKSECS) {
$dinfo = usergetdate($sdate);
if (isset($formdata->sdays) && array_key_exists($wdaydesc[$dinfo['wday']], $formdata->sdays)) {
$sess = new stdClass();
$sess->sessdate = make_timestamp($dinfo['year'], $dinfo['mon'], $dinfo['mday'],
$formdata->sestime['starthour'], $formdata->sestime['startminute']);
$sess->duration = $duration;
$sess->descriptionitemid = $formdata->sdescription['itemid'];
$sess->description = $formdata->sdescription['text'];
$sess->descriptionformat = $formdata->sdescription['format'];
$sess->calendarevent = $calendarevent;
$sess->timemodified = $now;
$sess->absenteereport = $absenteereport;
$sess->studentpassword = '';
$sess->includeqrcode = 0;
if (!empty($formdata->usedefaultsubnet)) {
$sess->subnet = $att->subnet;
} else {
$sess->subnet = $formdata->subnet;
}
$sess->automark = $formdata->automark;
$sess->automarkcompleted = 0;
if (!empty($formdata->preventsharedip)) {
$sess->preventsharedip = $formdata->preventsharedip;
}
if (!empty($formdata->preventsharediptime)) {
$sess->preventsharediptime = $formdata->preventsharediptime;
}
if (isset($formdata->studentscanmark)) { // Students will be able to mark their own attendance.
$sess->studentscanmark = 1;
if (isset($formdata->autoassignstatus)) {
$sess->autoassignstatus = 1;
}
if (!empty($formdata->randompassword)) {
$sess->studentpassword = attendance_random_string();
} else if (!empty($formdata->studentpassword)) {
$sess->studentpassword = $formdata->studentpassword;
}
if (!empty($formdata->includeqrcode)) {
$sess->includeqrcode = $formdata->includeqrcode;
}
}
$sess->statusset = $formdata->statusset;
attendance_fill_groupid($formdata, $sessions, $sess);
}
$sdate += DAYSECS;
} else {
$startweek += WEEKSECS * $formdata->period;
$sdate = $startweek;
}
}
} else {
$sess = new stdClass();
$sess->sessdate = $sessiondate;
$sess->duration = $duration;
$sess->descriptionitemid = $formdata->sdescription['itemid'];
$sess->description = $formdata->sdescription['text'];
$sess->descriptionformat = $formdata->sdescription['format'];
$sess->calendarevent = $calendarevent;
$sess->timemodified = $now;
$sess->studentscanmark = 0;
$sess->autoassignstatus = 0;
$sess->subnet = '';
$sess->studentpassword = '';
$sess->automark = 0;
$sess->automarkcompleted = 0;
$sess->absenteereport = $absenteereport;
$sess->includeqrcode = 0;
if (!empty($formdata->usedefaultsubnet)) {
$sess->subnet = $att->subnet;
} else {
$sess->subnet = $formdata->subnet;
}
if (!empty($formdata->automark)) {
$sess->automark = $formdata->automark;
}
if (!empty($formdata->preventsharedip)) {
$sess->preventsharedip = $formdata->preventsharedip;
}
if (!empty($formdata->preventsharediptime)) {
$sess->preventsharediptime = $formdata->preventsharediptime;
}
if (isset($formdata->studentscanmark) && !empty($formdata->studentscanmark)) {
// Students will be able to mark their own attendance.
$sess->studentscanmark = 1;
if (isset($formdata->autoassignstatus) && !empty($formdata->autoassignstatus)) {
$sess->autoassignstatus = 1;
}
if (!empty($formdata->randompassword)) {
$sess->studentpassword = attendance_random_string();
} else if (!empty($formdata->studentpassword)) {
$sess->studentpassword = $formdata->studentpassword;
}
if (!empty($formdata->includeqrcode)) {
$sess->includeqrcode = $formdata->includeqrcode;
}
}
$sess->statusset = $formdata->statusset;
attendance_fill_groupid($formdata, $sessions, $sess);
}
return $sessions;
}
/**
* Helper function for attendance_construct_sessions_data_for_add().
*
* @param stdClass $formdata
* @param stdClass $sessions
* @param stdClass $sess
*/
function attendance_fill_groupid($formdata, &$sessions, $sess) {
if ($formdata->sessiontype == mod_attendance_structure::SESSION_COMMON) {
$sess = clone $sess;
$sess->groupid = 0;
$sessions[] = $sess;
} else {
foreach ($formdata->groups as $groupid) {
$sess = clone $sess;
$sess->groupid = $groupid;
$sessions[] = $sess;
}
}
}
/**
* Generates a summary of points for the courses selected.
*
* @param array $courseids optional list of courses to return
* @param string $orderby - optional order by param
* @return stdClass
*/
function attendance_course_users_points($courseids = array(), $orderby = '') {
global $DB;
$where = '';
$params = array();
$where .= ' AND ats.sessdate < :enddate ';
$params['enddate'] = time();
$joingroup = 'LEFT JOIN {groups_members} gm ON (gm.userid = atl.studentid AND gm.groupid = ats.groupid)';
$where .= ' AND (ats.groupid = 0 or gm.id is NOT NULL)';
if (!empty($courseids)) {
list($insql, $inparams) = $DB->get_in_or_equal($courseids, SQL_PARAMS_NAMED);
$where .= ' AND c.id ' . $insql;
$params = array_merge($params, $inparams);
}
$sql = "SELECT courseid, coursename, sum(points) / sum(maxpoints) as percentage FROM (
SELECT a.id, a.course as courseid, c.fullname as coursename, atl.studentid AS userid, COUNT(DISTINCT ats.id) AS numtakensessions,
SUM(stg.grade) AS points, SUM(stm.maxgrade) AS maxpoints
FROM {attendance_sessions} ats
JOIN {attendance} a ON a.id = ats.attendanceid
JOIN {course} c ON c.id = a.course
JOIN {attendance_log} atl ON (atl.sessionid = ats.id)
JOIN {attendance_statuses} stg ON (stg.id = atl.statusid AND stg.deleted = 0 AND stg.visible = 1)
JOIN (SELECT attendanceid, setnumber, MAX(grade) AS maxgrade
FROM {attendance_statuses}
WHERE deleted = 0
AND visible = 1
GROUP BY attendanceid, setnumber) stm
ON (stm.setnumber = ats.statusset AND stm.attendanceid = ats.attendanceid)
{$joingroup}
WHERE ats.sessdate >= c.startdate
AND ats.lasttaken != 0
{$where}
GROUP BY a.id, a.course, c.fullname, atl.studentid
) p GROUP by courseid, coursename {$orderby}";
return $DB->get_records_sql($sql, $params);
}
/**
* Generates a list of users flagged absent.
*
* @param array $courseids optional list of courses to return
* @param string $orderby how to order results.
* @param bool $allfornotify get notification list for scheduled task.
* @return stdClass
*/
function attendance_get_users_to_notify($courseids = array(), $orderby = '', $allfornotify = false) {
global $DB;
$joingroup = 'LEFT JOIN {groups_members} gm ON (gm.userid = atl.studentid AND gm.groupid = ats.groupid)';
$where = ' AND (ats.groupid = 0 or gm.id is NOT NULL)';
$having = '';
$params = array();
if (!empty($courseids)) {
list($insql, $inparams) = $DB->get_in_or_equal($courseids, SQL_PARAMS_NAMED);
$where .= ' AND c.id ' . $insql;
$params = array_merge($params, $inparams);
}
if ($allfornotify) {
// Exclude warnings that have already sent the max num.
$having .= ' AND n.maxwarn > COUNT(DISTINCT ns.id) ';
}
$unames = get_all_user_name_fields(true);
$unames2 = get_all_user_name_fields(true, 'u');
$idfield = $DB->sql_concat('cm.id', 'atl.studentid', 'n.id');
$sql = "SELECT {$idfield} as uniqueid, a.id as aid, {$unames2}, a.name as aname, cm.id as cmid, c.id as courseid,
c.fullname as coursename, atl.studentid AS userid, n.id as notifyid, n.warningpercent, n.emailsubject,
n.emailcontent, n.emailcontentformat, n.emailuser, n.thirdpartyemails, n.warnafter, n.maxwarn,
COUNT(DISTINCT ats.id) AS numtakensessions, SUM(stg.grade) AS points, SUM(stm.maxgrade) AS maxpoints,
COUNT(DISTINCT ns.id) as nscount, MAX(ns.timesent) as timesent,
SUM(stg.grade) / SUM(stm.maxgrade) AS percent
FROM {attendance_sessions} ats
JOIN {attendance} a ON a.id = ats.attendanceid
JOIN {course_modules} cm ON cm.instance = a.id
JOIN {course} c on c.id = cm.course
JOIN {modules} md ON md.id = cm.module AND md.name = 'attendance'
JOIN {attendance_log} atl ON (atl.sessionid = ats.id)
JOIN {user} u ON (u.id = atl.studentid)
JOIN {attendance_statuses} stg ON (stg.id = atl.statusid AND stg.deleted = 0 AND stg.visible = 1)
JOIN {attendance_warning} n ON n.idnumber = a.id
LEFT JOIN {attendance_warning_done} ns ON ns.notifyid = n.id AND ns.userid = atl.studentid
JOIN (SELECT attendanceid, setnumber, MAX(grade) AS maxgrade
FROM {attendance_statuses}
WHERE deleted = 0
AND visible = 1
GROUP BY attendanceid, setnumber) stm
ON (stm.setnumber = ats.statusset AND stm.attendanceid = ats.attendanceid)
{$joingroup}
WHERE ats.absenteereport = 1 {$where}
GROUP BY uniqueid, a.id, a.name, a.course, c.fullname, atl.studentid, n.id, n.warningpercent,
n.emailsubject, n.emailcontent, n.emailcontentformat, n.warnafter, n.maxwarn,
n.emailuser, n.thirdpartyemails, cm.id, c.id, {$unames2}, ns.userid
HAVING n.warnafter <= COUNT(DISTINCT ats.id) AND n.warningpercent > ((SUM(stg.grade) / SUM(stm.maxgrade)) * 100)
{$having}
{$orderby}";
if (!$allfornotify) {
$idfield = $DB->sql_concat('cmid', 'userid');
// Only show one record per attendance for teacher reports.
$sql = "SELECT DISTINCT {$idfield} as id, {$unames}, aid, cmid, courseid, aname, coursename, userid,
numtakensessions, percent, MAX(timesent) as timesent
FROM ({$sql}) as m
GROUP BY id, aid, cmid, courseid, aname, userid, numtakensessions,
percent, coursename, {$unames} {$orderby}";
}
return $DB->get_records_sql($sql, $params);
}
/**
* Template variables into place in supplied email content.
*
* @param object $record db record of details
* @return array - the content of the fields after templating.
*/
function attendance_template_variables($record) {
$templatevars = array(
'/%coursename%/' => $record->coursename,
'/%courseid%/' => $record->courseid,
'/%userfirstname%/' => $record->firstname,
'/%userlastname%/' => $record->lastname,
'/%userid%/' => $record->userid,
'/%warningpercent%/' => $record->warningpercent,
'/%attendancename%/' => $record->aname,
'/%cmid%/' => $record->cmid,
'/%numtakensessions%/' => $record->numtakensessions,
'/%points%/' => $record->points,
'/%maxpoints%/' => $record->maxpoints,
'/%percent%/' => $record->percent,
);
$extrauserfields = get_all_user_name_fields();
foreach ($extrauserfields as $extra) {
$templatevars['/%'.$extra.'%/'] = $record->$extra;
}
$patterns = array_keys($templatevars); // The placeholders which are to be replaced.
$replacements = array_values($templatevars); // The values which are to be templated in for the placeholders.
// Array to describe which fields in reengagement object should have a template replacement.
$replacementfields = array('emailsubject', 'emailcontent');
// Replace %variable% with relevant value everywhere it occurs in reengagement->field.
foreach ($replacementfields as $field) {
$record->$field = preg_replace($patterns, $replacements, $record->$field);
}
return $record;
}
/**
* Find highest available status for a user.
*
* @param mod_attendance_structure $att attendance structure
* @param stdclass $attforsession attendance_session record.
* @return bool/int
*/
function attendance_session_get_highest_status(mod_attendance_structure $att, $attforsession) {
// Find the status to set here.
$statuses = $att->get_statuses();
$highestavailablegrade = 0;
$highestavailablestatus = new stdClass();
foreach ($statuses as $status) {
if ($status->studentavailability === '0') {
// This status is never available to students.
continue;
}
if (!empty($status->studentavailability)) {
$toolateforstatus = (($attforsession->sessdate + ($status->studentavailability * 60)) < time());
if ($toolateforstatus) {
continue;
}
}
// This status is available to the student.
if ($status->grade > $highestavailablegrade) {
// This is the most favourable grade so far; save it.
$highestavailablegrade = $status->grade;
$highestavailablestatus = $status;
}
}
if (empty($highestavailablestatus)) {
return false;
}
return $highestavailablestatus->id;
}
/**
* Get available automark options.
*
* @return array
*/
function attendance_get_automarkoptions() {
$options = array();
$options[ATTENDANCE_AUTOMARK_DISABLED] = get_string('noautomark', 'attendance');
if (strpos(get_config('tool_log', 'enabled_stores'), 'logstore_standard') !== false) {
$options[ATTENDANCE_AUTOMARK_ALL] = get_string('automarkall', 'attendance');
}
$options[ATTENDANCE_AUTOMARK_CLOSE] = get_string('automarkclose', 'attendance');
return $options;
}
/**
* Get available sharedip options.
*
* @return array
*/
function attendance_get_sharedipoptions() {
$options = array();
$options[ATTENDANCE_SHAREDIP_DISABLED] = get_string('no');
$options[ATTENDANCE_SHAREDIP_FORCE] = get_string('yes');
$options[ATTENDANCE_SHAREDIP_MINUTES] = get_string('setperiod', 'attendance');
return $options;
}
/**
* Used to print simple time - 1am instead of 1:00am.
*
* @param int $time - unix timestamp.
*/
function attendance_strftimehm($time) {
$mins = userdate($time, '%M');
if ($mins == '00') {
$format = get_string('strftimeh', 'attendance');
} else {
$format = get_string('strftimehm', 'attendance');
}
$userdate = userdate($time, $format);
// Some Lang packs use %p to suffix with AM/PM but not all strftime support this.
// Check if %p is in use and make sure it's being respected.
if (stripos($format, '%p')) {
// Check if $userdate did something with %p by checking userdate against the same format without %p.
$formatwithoutp = str_ireplace('%p', '', $format);
if (userdate($time, $formatwithoutp) == $userdate) {