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1 efrain 1
<?php
2
// This file is part of Moodle - http://moodle.org/
3
//
4
// Moodle is free software: you can redistribute it and/or modify
5
// it under the terms of the GNU General Public License as published by
6
// the Free Software Foundation, either version 3 of the License, or
7
// (at your option) any later version.
8
//
9
// Moodle is distributed in the hope that it will be useful,
10
// but WITHOUT ANY WARRANTY; without even the implied warranty of
11
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12
// GNU General Public License for more details.
13
//
14
// You should have received a copy of the GNU General Public License
15
// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
16
 
17
/**
18
 * External calendar API
19
 *
20
 * @package    core_calendar
21
 * @category   external
22
 * @copyright  2012 Ankit Agarwal
23
 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
24
 * @since Moodle 2.5
25
 */
26
 
27
defined('MOODLE_INTERNAL') || die;
28
 
29
require_once($CFG->dirroot . '/calendar/lib.php');
30
 
31
use core_calendar\local\api as local_api;
32
use core_calendar\local\event\container as event_container;
33
use core_calendar\local\event\forms\create as create_event_form;
34
use core_calendar\local\event\forms\update as update_event_form;
35
use core_calendar\local\event\mappers\create_update_form_mapper;
36
use core_calendar\external\event_exporter;
37
use core_calendar\external\events_exporter;
38
use core_calendar\external\events_grouped_by_course_exporter;
39
use core_calendar\external\events_related_objects_cache;
40
use core_external\external_api;
41
use core_external\external_format_value;
42
use core_external\external_function_parameters;
43
use core_external\external_multiple_structure;
44
use core_external\external_single_structure;
45
use core_external\external_value;
46
use core_external\external_warnings;
47
use core_external\util as external_util;
48
 
49
/**
50
 * Calendar external functions
51
 *
52
 * @package    core_calendar
53
 * @category   external
54
 * @copyright  2012 Ankit Agarwal
55
 * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
56
 * @since Moodle 2.5
57
 */
58
class core_calendar_external extends external_api {
59
    /**
60
     * Returns description of method parameters
61
     *
62
     * @return external_function_parameters
63
     * @since Moodle 2.5
64
     */
65
    public static function delete_calendar_events_parameters() {
66
        return new external_function_parameters(
67
                array('events' => new external_multiple_structure(
68
                        new external_single_structure(
69
                                array(
70
                                        'eventid' => new external_value(PARAM_INT, 'Event ID', VALUE_REQUIRED, '', NULL_NOT_ALLOWED),
71
                                        'repeat'  => new external_value(PARAM_BOOL, 'Delete comeplete series if repeated event')
72
                                ), 'List of events to delete'
73
                        )
74
                    )
75
                )
76
        );
77
    }
78
 
79
    /**
80
     * Delete Calendar events
81
     *
82
     * @param array $eventids A list of event ids with repeat flag to delete
83
     * @return null
84
     * @since Moodle 2.5
85
     */
86
    public static function delete_calendar_events($events) {
87
        global $DB;
88
 
89
        // Parameter validation.
90
        $params = self::validate_parameters(self:: delete_calendar_events_parameters(), array('events' => $events));
91
 
92
        $transaction = $DB->start_delegated_transaction();
93
 
94
        foreach ($params['events'] as $event) {
95
            $eventobj = calendar_event::load($event['eventid']);
96
 
97
            // Let's check if the user is allowed to delete an event.
98
            if (!calendar_delete_event_allowed($eventobj)) {
99
                throw new moodle_exception('nopermissions', 'error', '', get_string('deleteevent', 'calendar'));
100
            }
101
            // Time to do the magic.
102
            $eventobj->delete($event['repeat']);
103
        }
104
 
105
        // Everything done smoothly, let's commit.
106
        $transaction->allow_commit();
107
 
108
        return null;
109
    }
110
 
111
    /**
112
     * Returns description of method result value
113
     *
114
     * @return \core_external\external_description
115
     * @since Moodle 2.5
116
     */
117
    public static function delete_calendar_events_returns() {
118
        return null;
119
    }
120
 
121
    /**
122
     * Returns description of method parameters
123
     *
124
     * @return external_function_parameters
125
     * @since Moodle 2.5
126
     */
127
    public static function get_calendar_events_parameters() {
128
        return new external_function_parameters(
129
                array('events' => new external_single_structure(
130
                            array(
131
                                    'eventids' => new external_multiple_structure(
132
                                            new external_value(PARAM_INT, 'event ids')
133
                                            , 'List of event ids',
134
                                            VALUE_DEFAULT, array()),
135
                                    'courseids' => new external_multiple_structure(
136
                                            new external_value(PARAM_INT, 'course ids')
137
                                            , 'List of course ids for which events will be returned',
138
                                            VALUE_DEFAULT, array()),
139
                                    'groupids' => new external_multiple_structure(
140
                                            new external_value(PARAM_INT, 'group ids')
141
                                            , 'List of group ids for which events should be returned',
142
                                            VALUE_DEFAULT, array()),
143
                                    'categoryids' => new external_multiple_structure(
144
                                            new external_value(PARAM_INT, 'Category ids'),
145
                                            'List of category ids for which events will be returned',
146
                                            VALUE_DEFAULT, array()),
147
                            ), 'Event details', VALUE_DEFAULT, array()),
148
                    'options' => new external_single_structure(
149
                            array(
150
                                    'userevents' => new external_value(PARAM_BOOL,
151
                                             "Set to true to return current user's user events",
152
                                             VALUE_DEFAULT, true, NULL_ALLOWED),
153
                                    'siteevents' => new external_value(PARAM_BOOL,
154
                                             "Set to true to return site events",
155
                                             VALUE_DEFAULT, true, NULL_ALLOWED),
156
                                    'timestart' => new external_value(PARAM_INT,
157
                                             "Time from which events should be returned",
158
                                             VALUE_DEFAULT, 0, NULL_ALLOWED),
159
                                    'timeend' => new external_value(PARAM_INT,
160
                                             "Time to which the events should be returned. We treat 0 and null as no end",
161
                                             VALUE_DEFAULT, 0, NULL_ALLOWED),
162
                                    'ignorehidden' => new external_value(PARAM_BOOL,
163
                                             "Ignore hidden events or not",
164
                                             VALUE_DEFAULT, true, NULL_ALLOWED),
165
 
166
                            ), 'Options', VALUE_DEFAULT, array())
167
                )
168
        );
169
    }
170
 
171
    /**
172
     * Get Calendar events
173
     *
174
     * @param array $events A list of events
175
     * @param array $options various options
176
     * @return array Array of event details
177
     * @since Moodle 2.5
178
     */
179
    public static function get_calendar_events($events = array(), $options = array()) {
180
        global $SITE, $DB, $USER;
181
 
182
        // Parameter validation.
183
        $params = self::validate_parameters(self::get_calendar_events_parameters(), array('events' => $events, 'options' => $options));
184
        $funcparam = array('courses' => array(), 'groups' => array(), 'categories' => array());
185
        $hassystemcap = has_capability('moodle/calendar:manageentries', context_system::instance());
186
        $warnings = array();
187
        $coursecategories = array();
188
 
189
        // Let us find out courses and their categories that we can return events from.
190
        if (!$hassystemcap) {
191
            $courseobjs = enrol_get_my_courses();
192
            $courses = array_keys($courseobjs);
193
 
194
            $coursecategories = array_flip(array_map(function($course) {
195
                return $course->category;
196
            }, $courseobjs));
197
 
198
            foreach ($params['events']['courseids'] as $id) {
199
               try {
200
                    $context = context_course::instance($id);
201
                    self::validate_context($context);
202
                    $funcparam['courses'][] = $id;
203
                } catch (Exception $e) {
204
                    $warnings[] = array(
205
                        'item' => 'course',
206
                        'itemid' => $id,
207
                        'warningcode' => 'nopermissions',
208
                        'message' => 'No access rights in course context '.$e->getMessage().$e->getTraceAsString()
209
                    );
210
                }
211
            }
212
        } else {
213
            $courses = $params['events']['courseids'];
214
            $funcparam['courses'] = $courses;
215
 
216
            if (!empty($courses)) {
217
                list($wheresql, $sqlparams) = $DB->get_in_or_equal($courses);
218
                $wheresql = "id $wheresql";
219
                $coursecategories = array_flip(array_map(function($course) {
220
                    return $course->category;
221
                }, $DB->get_records_select('course', $wheresql, $sqlparams, '', 'category')));
222
            }
223
        }
224
 
225
        // Let us findout groups that we can return events from.
226
        if (!$hassystemcap) {
227
            $groups = groups_get_my_groups();
228
            $groups = array_keys($groups);
229
            foreach ($params['events']['groupids'] as $id) {
230
                if (in_array($id, $groups)) {
231
                    $funcparam['groups'][] = $id;
232
                } else {
233
                    $warnings[] = array('item' => $id, 'warningcode' => 'nopermissions', 'message' => 'you do not have permissions to access this group');
234
                }
235
            }
236
        } else {
237
            $groups = $params['events']['groupids'];
238
            $funcparam['groups'] = $groups;
239
        }
240
 
241
        $categories = array();
242
        if ($hassystemcap || !empty($courses)) {
243
            // Use the category id as the key in the following array. That way we do not have to remove duplicates and
244
            // have a faster lookup later.
245
            $categories = [];
246
 
247
            if (!empty($params['events']['categoryids'])) {
248
                $catobjs = \core_course_category::get_many(
249
                    array_merge($params['events']['categoryids'], array_keys($coursecategories)));
250
                foreach ($catobjs as $catobj) {
251
                    if (isset($coursecategories[$catobj->id]) ||
252
                            has_capability('moodle/category:manage', $catobj->get_context())) {
253
                        // If the user has access to a course in this category or can manage the category,
254
                        // then they can see all parent categories too.
255
                        $categories[$catobj->id] = true;
256
                        foreach ($catobj->get_parents() as $catid) {
257
                            $categories[$catid] = true;
258
                        }
259
                    }
260
                }
261
                $funcparam['categories'] = array_keys($categories);
262
            } else {
263
                // Fetch all categories where this user has any enrolment, and all categories that this user can manage.
264
                $calcatcache = cache::make('core', 'calendar_categories');
265
                // Do not use cache if the user has the system capability as $coursecategories might not represent the
266
                // courses the user is enrolled in.
267
                $categories = (!$hassystemcap) ? $calcatcache->get('site') : false;
268
                if ($categories !== false) {
269
                    // The ids are stored in a list in the cache.
270
                    $funcparam['categories'] = $categories;
271
                    $categories = array_flip($categories);
272
                } else {
273
                    $categories = [];
274
                    foreach (\core_course_category::get_all() as $category) {
275
                        if (isset($coursecategories[$category->id]) ||
276
                                has_capability('moodle/category:manage', $category->get_context(), $USER, false)) {
277
                            // If the user has access to a course in this category or can manage the category,
278
                            // then they can see all parent categories too.
279
                            $categories[$category->id] = true;
280
                            foreach ($category->get_parents() as $catid) {
281
                                $categories[$catid] = true;
282
                            }
283
                        }
284
                    }
285
                    $funcparam['categories'] = array_keys($categories);
286
                    if (!$hassystemcap) {
287
                        $calcatcache->set('site', $funcparam['categories']);
288
                    }
289
                }
290
            }
291
        }
292
 
293
        // Do we need user events?
294
        if (!empty($params['options']['userevents'])) {
295
            $funcparam['users'] = array($USER->id);
296
        } else {
297
            $funcparam['users'] = false;
298
        }
299
 
300
        // Do we need site events?
301
        if (!empty($params['options']['siteevents'])) {
302
            $funcparam['courses'][] = $SITE->id;
303
        }
304
 
305
        // We treat 0 and null as no end.
306
        if (empty($params['options']['timeend'])) {
307
            $params['options']['timeend'] = PHP_INT_MAX;
308
        }
309
 
310
        // Event list does not check visibility and permissions, we'll check that later.
311
        $eventlist = calendar_get_legacy_events($params['options']['timestart'], $params['options']['timeend'],
312
                $funcparam['users'], $funcparam['groups'], $funcparam['courses'], true,
313
                $params['options']['ignorehidden'], $funcparam['categories']);
314
 
315
        // WS expects arrays.
316
        $events = array();
317
 
318
        // We need to get events asked for eventids.
319
        if ($eventsbyid = calendar_get_events_by_id($params['events']['eventids'])) {
320
            $eventlist += $eventsbyid;
321
        }
322
        foreach ($eventlist as $eventid => $eventobj) {
323
            $event = (array) $eventobj;
324
            // Description formatting.
325
            $calendareventobj = new calendar_event($event);
326
            $event['name'] = $calendareventobj->format_external_name();
327
            list($event['description'], $event['format']) = $calendareventobj->format_external_text();
328
 
329
            if ($hassystemcap) {
330
                // User can see everything, no further check is needed.
331
                $events[$eventid] = $event;
332
            } else if (!empty($eventobj->modulename)) {
333
                $courseid = $eventobj->courseid;
334
                if (!$courseid) {
335
                    if (!$calendareventobj->context || !($context = $calendareventobj->context->get_course_context(false))) {
336
                        continue;
337
                    }
338
                    $courseid = $context->instanceid;
339
                }
340
                $instances = get_fast_modinfo($courseid)->get_instances_of($eventobj->modulename);
341
                if (!empty($instances[$eventobj->instance]->uservisible)) {
342
                    $events[$eventid] = $event;
343
                }
344
            } else {
345
                // Can the user actually see this event?
346
                $eventobj = calendar_event::load($eventobj);
347
                if ((($eventobj->courseid == $SITE->id) && (empty($eventobj->categoryid))) ||
348
                            (!empty($eventobj->categoryid) && isset($categories[$eventobj->categoryid])) ||
349
                            (!empty($eventobj->groupid) && in_array($eventobj->groupid, $groups)) ||
350
                            (!empty($eventobj->courseid) && in_array($eventobj->courseid, $courses)) ||
351
                            ($USER->id == $eventobj->userid) ||
352
                            (calendar_edit_event_allowed($eventobj))) {
353
                    $events[$eventid] = $event;
354
                } else {
355
                    $warnings[] = array('item' => $eventid, 'warningcode' => 'nopermissions', 'message' => 'you do not have permissions to view this event');
356
                }
357
            }
358
        }
359
        return array('events' => $events, 'warnings' => $warnings);
360
    }
361
 
362
    /**
363
     * Returns description of method result value
364
     *
365
     * @return \core_external\external_description
366
     * @since Moodle 2.5
367
     */
368
    public static function get_calendar_events_returns() {
369
        return new external_single_structure(array(
370
                'events' => new external_multiple_structure( new external_single_structure(
371
                        array(
372
                            'id' => new external_value(PARAM_INT, 'event id'),
373
                            'name' => new external_value(PARAM_RAW, 'event name'),
374
                            'description' => new external_value(PARAM_RAW, 'Description', VALUE_OPTIONAL, null, NULL_ALLOWED),
375
                            'format' => new external_format_value('description'),
376
                            'courseid' => new external_value(PARAM_INT, 'course id'),
377
                            'categoryid' => new external_value(PARAM_INT, 'Category id (only for category events).',
378
                                VALUE_OPTIONAL),
379
                            'groupid' => new external_value(PARAM_INT, 'group id'),
380
                            'userid' => new external_value(PARAM_INT, 'user id'),
381
                            'repeatid' => new external_value(PARAM_INT, 'repeat id'),
382
                            'modulename' => new external_value(PARAM_TEXT, 'module name', VALUE_OPTIONAL, null, NULL_ALLOWED),
383
                            'instance' => new external_value(PARAM_INT, 'instance id'),
384
                            'eventtype' => new external_value(PARAM_TEXT, 'Event type'),
385
                            'timestart' => new external_value(PARAM_INT, 'timestart'),
386
                            'timeduration' => new external_value(PARAM_INT, 'time duration'),
387
                            'visible' => new external_value(PARAM_INT, 'visible'),
388
                            'uuid' => new external_value(PARAM_TEXT, 'unique id of ical events', VALUE_OPTIONAL, null, NULL_NOT_ALLOWED),
389
                            'sequence' => new external_value(PARAM_INT, 'sequence'),
390
                            'timemodified' => new external_value(PARAM_INT, 'time modified'),
391
                            'subscriptionid' => new external_value(PARAM_INT, 'Subscription id', VALUE_OPTIONAL, null, NULL_ALLOWED),
392
                        ), 'event')
393
                 ),
394
                 'warnings' => new external_warnings()
395
                )
396
        );
397
    }
398
 
399
    /**
400
     * Returns description of method parameters.
401
     *
402
     * @since Moodle 3.3
403
     * @return external_function_parameters
404
     */
405
    public static function get_calendar_action_events_by_timesort_parameters() {
406
        return new external_function_parameters(
407
            array(
408
                'timesortfrom' => new external_value(PARAM_INT, 'Time sort from', VALUE_DEFAULT, 0),
409
                'timesortto' => new external_value(PARAM_INT, 'Time sort to', VALUE_DEFAULT, null),
410
                'aftereventid' => new external_value(PARAM_INT, 'The last seen event id', VALUE_DEFAULT, 0),
411
                'limitnum' => new external_value(PARAM_INT, 'Limit number', VALUE_DEFAULT, 20),
412
                'limittononsuspendedevents' => new external_value(PARAM_BOOL,
413
                        'Limit the events to courses the user is not suspended in', VALUE_DEFAULT, false),
414
                'userid' => new external_value(PARAM_INT, 'The user id', VALUE_DEFAULT, null),
415
                'searchvalue' => new external_value(PARAM_RAW, 'The value a user wishes to search against', VALUE_DEFAULT, null)
416
            )
417
        );
418
    }
419
 
420
    /**
421
     * Get calendar action events based on the timesort value.
422
     *
423
     * @since Moodle 3.3
424
     * @param null|int $timesortfrom Events after this time (inclusive)
425
     * @param null|int $timesortto Events before this time (inclusive)
426
     * @param null|int $aftereventid Get events with ids greater than this one
427
     * @param int $limitnum Limit the number of results to this value
428
     * @param null|int $userid The user id
429
     * @param string|null $searchvalue The value a user wishes to search against
430
     * @return array
431
     */
432
    public static function get_calendar_action_events_by_timesort($timesortfrom = 0, $timesortto = null,
433
                                                       $aftereventid = 0, $limitnum = 20, $limittononsuspendedevents = false,
434
                                                       $userid = null, ?string $searchvalue = null) {
435
        global $PAGE, $USER;
436
 
437
        $params = self::validate_parameters(
438
            self::get_calendar_action_events_by_timesort_parameters(),
439
            [
440
                'timesortfrom' => $timesortfrom,
441
                'timesortto' => $timesortto,
442
                'aftereventid' => $aftereventid,
443
                'limitnum' => $limitnum,
444
                'limittononsuspendedevents' => $limittononsuspendedevents,
445
                'userid' => $userid,
446
                'searchvalue' => $searchvalue
447
            ]
448
        );
449
        if ($params['userid']) {
450
            $user = \core_user::get_user($params['userid']);
451
        } else {
452
            $user = $USER;
453
        }
454
 
455
        $context = \context_user::instance($user->id);
456
        self::validate_context($context);
457
 
458
        if ($params['userid'] && $USER->id !== $params['userid'] && !has_capability('moodle/calendar:manageentries', $context)) {
459
            throw new \required_capability_exception($context, 'moodle/calendar:manageentries', 'nopermission', '');
460
        }
461
 
462
        if (empty($params['aftereventid'])) {
463
            $params['aftereventid'] = null;
464
        }
465
 
466
        $renderer = $PAGE->get_renderer('core_calendar');
467
        $events = local_api::get_action_events_by_timesort(
468
            $params['timesortfrom'],
469
            $params['timesortto'],
470
            $params['aftereventid'],
471
            $params['limitnum'],
472
            $params['limittononsuspendedevents'],
473
            $user,
474
            clean_param($params['searchvalue'], PARAM_TEXT)
475
        );
476
 
477
        $exportercache = new events_related_objects_cache($events);
478
        $exporter = new events_exporter($events, ['cache' => $exportercache]);
479
 
480
        return $exporter->export($renderer);
481
    }
482
 
483
    /**
484
     * Returns description of method result value.
485
     *
486
     * @since Moodle 3.3
487
     * @return \core_external\external_description
488
     */
489
    public static function get_calendar_action_events_by_timesort_returns() {
490
        return events_exporter::get_read_structure();
491
    }
492
 
493
    /**
494
     * Returns description of method parameters.
495
     *
496
     * @return external_function_parameters
497
     */
498
    public static function get_calendar_action_events_by_course_parameters() {
499
        return new external_function_parameters(
500
            array(
501
                'courseid' => new external_value(PARAM_INT, 'Course id'),
502
                'timesortfrom' => new external_value(PARAM_INT, 'Time sort from', VALUE_DEFAULT, null),
503
                'timesortto' => new external_value(PARAM_INT, 'Time sort to', VALUE_DEFAULT, null),
504
                'aftereventid' => new external_value(PARAM_INT, 'The last seen event id', VALUE_DEFAULT, 0),
505
                'limitnum' => new external_value(PARAM_INT, 'Limit number', VALUE_DEFAULT, 20),
506
                'searchvalue' => new external_value(PARAM_RAW, 'The value a user wishes to search against', VALUE_DEFAULT, null)
507
            )
508
        );
509
    }
510
 
511
    /**
512
     * Get calendar action events for the given course.
513
     *
514
     * @since Moodle 3.3
515
     * @param int $courseid Only events in this course
516
     * @param null|int $timesortfrom Events after this time (inclusive)
517
     * @param null|int $timesortto Events before this time (inclusive)
518
     * @param null|int $aftereventid Get events with ids greater than this one
519
     * @param int $limitnum Limit the number of results to this value
520
     * @param string|null $searchvalue The value a user wishes to search against
521
     * @return array
522
     */
523
    public static function get_calendar_action_events_by_course(
524
        $courseid, $timesortfrom = null, $timesortto = null, $aftereventid = 0, $limitnum = 20, ?string $searchvalue = null) {
525
 
526
        global $PAGE, $USER;
527
 
528
        $user = null;
529
        $params = self::validate_parameters(
530
            self::get_calendar_action_events_by_course_parameters(),
531
            [
532
                'courseid' => $courseid,
533
                'timesortfrom' => $timesortfrom,
534
                'timesortto' => $timesortto,
535
                'aftereventid' => $aftereventid,
536
                'limitnum' => $limitnum,
537
                'searchvalue' => $searchvalue
538
            ]
539
        );
540
        $context = \context_user::instance($USER->id);
541
        self::validate_context($context);
542
 
543
        if (empty($params['aftereventid'])) {
544
            $params['aftereventid'] = null;
545
        }
546
 
547
        $courses = enrol_get_my_courses('*', null, 0, [$courseid]);
548
        $courses = array_values($courses);
549
 
550
        if (empty($courses)) {
551
            return [];
552
        }
553
 
554
        $course = $courses[0];
555
        $renderer = $PAGE->get_renderer('core_calendar');
556
        $events = local_api::get_action_events_by_course(
557
            $course,
558
            $params['timesortfrom'],
559
            $params['timesortto'],
560
            $params['aftereventid'],
561
            $params['limitnum'],
562
            clean_param($params['searchvalue'], PARAM_TEXT)
563
        );
564
 
565
        $exportercache = new events_related_objects_cache($events, $courses);
566
        $exporter = new events_exporter($events, ['cache' => $exportercache]);
567
 
568
        return $exporter->export($renderer);
569
    }
570
 
571
    /**
572
     * Returns description of method result value.
573
     *
574
     * @return \core_external\external_description
575
     */
576
    public static function get_calendar_action_events_by_course_returns() {
577
        return events_exporter::get_read_structure();
578
    }
579
 
580
    /**
581
     * Returns description of method parameters.
582
     *
583
     * @return external_function_parameters
584
     */
585
    public static function get_calendar_action_events_by_courses_parameters() {
586
        return new external_function_parameters(
587
            array(
588
                'courseids' => new external_multiple_structure(
589
                    new external_value(PARAM_INT, 'Course id')
590
                ),
591
                'timesortfrom' => new external_value(PARAM_INT, 'Time sort from', VALUE_DEFAULT, null),
592
                'timesortto' => new external_value(PARAM_INT, 'Time sort to', VALUE_DEFAULT, null),
593
                'limitnum' => new external_value(PARAM_INT, 'Limit number', VALUE_DEFAULT, 10),
594
                'searchvalue' => new external_value(PARAM_RAW, 'The value a user wishes to search against', VALUE_DEFAULT, null)
595
            )
596
        );
597
    }
598
 
599
    /**
600
     * Get calendar action events for a given list of courses.
601
     *
602
     * @since Moodle 3.3
603
     * @param array $courseids Only include events for these courses
604
     * @param null|int $timesortfrom Events after this time (inclusive)
605
     * @param null|int $timesortto Events before this time (inclusive)
606
     * @param int $limitnum Limit the number of results per course to this value
607
     * @param string|null $searchvalue The value a user wishes to search against
608
     * @return array
609
     */
610
    public static function get_calendar_action_events_by_courses(
611
        array $courseids, $timesortfrom = null, $timesortto = null, $limitnum = 10, ?string $searchvalue = null) {
612
 
613
        global $PAGE, $USER;
614
 
615
        $user = null;
616
        $params = self::validate_parameters(
617
            self::get_calendar_action_events_by_courses_parameters(),
618
            [
619
                'courseids' => $courseids,
620
                'timesortfrom' => $timesortfrom,
621
                'timesortto' => $timesortto,
622
                'limitnum' => $limitnum,
623
                'searchvalue' => $searchvalue
624
            ]
625
        );
626
        $context = \context_user::instance($USER->id);
627
        self::validate_context($context);
628
 
629
        if (empty($params['courseids'])) {
630
            return ['groupedbycourse' => []];
631
        }
632
 
633
        $renderer = $PAGE->get_renderer('core_calendar');
634
        $courses = enrol_get_my_courses('*', null, 0, $params['courseids']);
635
        $courses = array_values($courses);
636
 
637
        if (empty($courses)) {
638
            return ['groupedbycourse' => []];
639
        }
640
 
641
        $events = local_api::get_action_events_by_courses(
642
            $courses,
643
            $params['timesortfrom'],
644
            $params['timesortto'],
645
            $params['limitnum'],
646
            clean_param($params['searchvalue'], PARAM_TEXT)
647
        );
648
 
649
        if (empty($events)) {
650
            return ['groupedbycourse' => []];
651
        }
652
 
653
        $exportercache = new events_related_objects_cache($events, $courses);
654
        $exporter = new events_grouped_by_course_exporter($events, ['cache' => $exportercache]);
655
 
656
        return $exporter->export($renderer);
657
    }
658
 
659
    /**
660
     * Returns description of method result value.
661
     *
662
     * @return \core_external\external_description
663
     */
664
    public static function get_calendar_action_events_by_courses_returns() {
665
        return events_grouped_by_course_exporter::get_read_structure();
666
    }
667
 
668
    /**
669
     * Returns description of method parameters.
670
     *
671
     * @return external_function_parameters.
672
     * @since Moodle 2.5
673
     */
674
    public static function create_calendar_events_parameters() {
675
        // Userid is always current user, so no need to get it from client.
676
        // Module based calendar events are not allowed here. Hence no need of instance and modulename.
677
        // subscription id and uuid is not allowed as this is not an ical api.
678
        return new external_function_parameters(
679
                array('events' => new external_multiple_structure(
680
                        new external_single_structure(
681
                            array(
682
                                'name' => new external_value(PARAM_TEXT, 'event name', VALUE_REQUIRED, '', NULL_NOT_ALLOWED),
683
                                'description' => new external_value(PARAM_RAW, 'Description', VALUE_DEFAULT, null, NULL_ALLOWED),
684
                                'format' => new external_format_value('description', VALUE_DEFAULT),
685
                                'courseid' => new external_value(PARAM_INT, 'course id', VALUE_DEFAULT, 0, NULL_NOT_ALLOWED),
686
                                'groupid' => new external_value(PARAM_INT, 'group id', VALUE_DEFAULT, 0, NULL_NOT_ALLOWED),
687
                                'repeats' => new external_value(PARAM_INT, 'number of repeats', VALUE_DEFAULT, 0, NULL_NOT_ALLOWED),
688
                                'eventtype' => new external_value(PARAM_TEXT, 'Event type', VALUE_DEFAULT, 'user', NULL_NOT_ALLOWED),
689
                                'timestart' => new external_value(PARAM_INT, 'timestart', VALUE_DEFAULT, time(), NULL_NOT_ALLOWED),
690
                                'timeduration' => new external_value(PARAM_INT, 'time duration', VALUE_DEFAULT, 0, NULL_NOT_ALLOWED),
691
                                'visible' => new external_value(PARAM_INT, 'visible', VALUE_DEFAULT, 1, NULL_NOT_ALLOWED),
692
                                'sequence' => new external_value(PARAM_INT, 'sequence', VALUE_DEFAULT, 1, NULL_NOT_ALLOWED),
693
                            ), 'event')
694
                )
695
            )
696
        );
697
    }
698
 
699
    /**
700
     * Create calendar events.
701
     *
702
     * @param array $events A list of events to create.
703
     * @return array array of events created.
704
     * @since Moodle 2.5
705
     * @throws moodle_exception if user doesnt have the permission to create events.
706
     */
707
    public static function create_calendar_events($events) {
708
        global $DB, $USER;
709
 
710
        // Parameter validation.
711
        $params = self::validate_parameters(self::create_calendar_events_parameters(), array('events' => $events));
712
 
713
        $transaction = $DB->start_delegated_transaction();
714
        $return = array();
715
        $warnings = array();
716
 
717
        foreach ($params['events'] as $event) {
718
 
719
            // Let us set some defaults.
720
            $event['userid'] = $USER->id;
721
            $event['modulename'] = '';
722
            $event['instance'] = 0;
723
            $event['subscriptionid'] = null;
724
            $event['uuid']= '';
725
            $event['format'] = external_util::validate_format($event['format']);
726
            if ($event['repeats'] > 0) {
727
                $event['repeat'] = 1;
728
            } else {
729
                $event['repeat'] = 0;
730
            }
731
 
732
            $eventobj = new calendar_event($event);
733
 
734
            // Let's check if the user is allowed to delete an event.
735
            if (!calendar_add_event_allowed($eventobj)) {
736
                $warnings [] = array('item' => $event['name'], 'warningcode' => 'nopermissions', 'message' => 'you do not have permissions to create this event');
737
                continue;
738
            }
739
            // Let's create the event.
740
            $var = $eventobj->create($event);
741
            $var = (array)$var->properties();
742
            if ($event['repeat']) {
743
                $children = $DB->get_records('event', array('repeatid' => $var['id']));
744
                foreach ($children as $child) {
745
                    $return[] = (array) $child;
746
                }
747
            } else {
748
                $return[] = $var;
749
            }
750
        }
751
 
752
        // Everything done smoothly, let's commit.
753
        $transaction->allow_commit();
754
        return array('events' => $return, 'warnings' => $warnings);
755
    }
756
 
757
    /**
758
     * Returns description of method result value.
759
     *
760
     * @return \core_external\external_description.
761
     * @since Moodle 2.5
762
     */
763
    public static function create_calendar_events_returns() {
764
            return new external_single_structure(
765
                    array(
766
                        'events' => new external_multiple_structure( new external_single_structure(
767
                                array(
768
                                    'id' => new external_value(PARAM_INT, 'event id'),
769
                                    'name' => new external_value(PARAM_RAW, 'event name'),
770
                                    'description' => new external_value(PARAM_RAW, 'Description', VALUE_OPTIONAL),
771
                                    'format' => new external_format_value('description'),
772
                                    'courseid' => new external_value(PARAM_INT, 'course id'),
773
                                    'groupid' => new external_value(PARAM_INT, 'group id'),
774
                                    'userid' => new external_value(PARAM_INT, 'user id'),
775
                                    'repeatid' => new external_value(PARAM_INT, 'repeat id', VALUE_OPTIONAL),
776
                                    'modulename' => new external_value(PARAM_TEXT, 'module name', VALUE_OPTIONAL),
777
                                    'instance' => new external_value(PARAM_INT, 'instance id'),
778
                                    'eventtype' => new external_value(PARAM_TEXT, 'Event type'),
779
                                    'timestart' => new external_value(PARAM_INT, 'timestart'),
780
                                    'timeduration' => new external_value(PARAM_INT, 'time duration'),
781
                                    'visible' => new external_value(PARAM_INT, 'visible'),
782
                                    'uuid' => new external_value(PARAM_TEXT, 'unique id of ical events', VALUE_OPTIONAL, '', NULL_NOT_ALLOWED),
783
                                    'sequence' => new external_value(PARAM_INT, 'sequence'),
784
                                    'timemodified' => new external_value(PARAM_INT, 'time modified'),
785
                                    'subscriptionid' => new external_value(PARAM_INT, 'Subscription id', VALUE_OPTIONAL),
786
                                ), 'event')
787
                        ),
788
                      'warnings' => new external_warnings()
789
                    )
790
            );
791
    }
792
 
793
    /**
794
     * Returns description of method parameters.
795
     *
796
     * @return external_function_parameters
797
     */
798
    public static function get_calendar_event_by_id_parameters() {
799
        return new external_function_parameters(
800
            array(
801
                'eventid' => new external_value(PARAM_INT, 'The event id to be retrieved'),
802
            )
803
        );
804
    }
805
 
806
    /**
807
     * Get calendar event by id.
808
     *
809
     * @param int $eventid The calendar event id to be retrieved.
810
     * @return array Array of event details
811
     */
812
    public static function get_calendar_event_by_id($eventid) {
813
        global $PAGE, $USER;
814
 
815
        $params = self::validate_parameters(self::get_calendar_event_by_id_parameters(), ['eventid' => $eventid]);
816
        $context = \context_user::instance($USER->id);
817
 
818
        self::validate_context($context);
819
        $warnings = array();
820
 
821
        $eventvault = event_container::get_event_vault();
822
        if ($event = $eventvault->get_event_by_id($params['eventid'])) {
823
            $mapper = event_container::get_event_mapper();
824
            if (!calendar_view_event_allowed($mapper->from_event_to_legacy_event($event))) {
825
                throw new moodle_exception('nopermissiontoviewcalendar', 'error');
826
            }
827
        }
828
 
829
        if (!$event) {
830
            // We can't return a warning in this case because the event is not optional.
831
            // We don't know the context for the event and it's not worth loading it.
832
            $syscontext = context_system::instance();
833
            throw new \required_capability_exception($syscontext, 'moodle/course:view', 'nopermissions', 'error');
834
        }
835
 
836
        $cache = new events_related_objects_cache([$event]);
837
        $relatedobjects = [
838
            'context' => $cache->get_context($event),
839
            'course' => $cache->get_course($event),
840
        ];
841
 
842
        $exporter = new event_exporter($event, $relatedobjects);
843
        $renderer = $PAGE->get_renderer('core_calendar');
844
 
845
        return array('event' => $exporter->export($renderer), 'warnings' => $warnings);
846
    }
847
 
848
    /**
849
     * Returns description of method result value
850
     *
851
     * @return \core_external\external_description
852
     */
853
    public static function get_calendar_event_by_id_returns() {
854
        $eventstructure = event_exporter::get_read_structure();
855
 
856
        return new external_single_structure(array(
857
            'event' => $eventstructure,
858
            'warnings' => new external_warnings()
859
            )
860
        );
861
    }
862
 
863
    /**
864
     * Returns description of method parameters.
865
     *
866
     * @return external_function_parameters.
867
     */
868
    public static function submit_create_update_form_parameters() {
869
        return new external_function_parameters(
870
            [
871
                'formdata' => new external_value(PARAM_RAW, 'The data from the event form'),
872
            ]
873
        );
874
    }
875
 
876
    /**
877
     * Handles the event form submission.
878
     *
879
     * @param string $formdata The event form data in a URI encoded param string
880
     * @return array The created or modified event
881
     * @throws moodle_exception
882
     */
883
    public static function submit_create_update_form($formdata) {
884
        global $USER, $PAGE, $CFG;
885
        require_once($CFG->libdir."/filelib.php");
886
 
887
        // Parameter validation.
888
        $params = self::validate_parameters(self::submit_create_update_form_parameters(), ['formdata' => $formdata]);
889
        $context = \context_user::instance($USER->id);
890
        $data = [];
891
 
892
        self::validate_context($context);
893
        parse_str($params['formdata'], $data);
894
 
895
        if (WS_SERVER) {
896
            // Request via WS, ignore sesskey checks in form library.
897
            $USER->ignoresesskey = true;
898
        }
899
 
900
        $eventtype = isset($data['eventtype']) ? $data['eventtype'] : null;
901
        $coursekey = ($eventtype == 'group') ? 'groupcourseid' : 'courseid';
902
        $courseid = (!empty($data[$coursekey])) ? $data[$coursekey] : null;
903
        $editoroptions = \core_calendar\local\event\forms\create::build_editor_options($context);
904
        $formoptions = ['editoroptions' => $editoroptions, 'courseid' => $courseid];
905
        $allowedeeventtypes = calendar_get_allowed_event_types($courseid);
906
 
907
        // Event type validation.
908
        if (in_array(true, $allowedeeventtypes, true) === false) {
909
            throw new \moodle_exception('nopermissiontoupdatecalendar');
910
        }
911
        if (empty($eventtype) || !isset($allowedeeventtypes[$eventtype]) || $allowedeeventtypes[$eventtype] == false) {
912
            return ['validationerror' => true];
913
        }
914
 
915
        $formoptions['eventtypes'] = $allowedeeventtypes;
916
        if ($courseid) {
917
            require_once($CFG->libdir . '/grouplib.php');
918
            $groupcoursedata = groups_get_course_data($courseid);
919
            if (!empty($groupcoursedata->groups)) {
920
                $formoptions['groups'] = [];
921
                foreach ($groupcoursedata->groups as $groupid => $groupdata) {
922
                    $formoptions['groups'][$groupid] = $groupdata->name;
923
                }
924
            }
925
        }
926
 
927
        if (!empty($data['id'])) {
928
            $eventid = clean_param($data['id'], PARAM_INT);
929
            $legacyevent = calendar_event::load($eventid);
930
            $legacyevent->count_repeats();
931
            $formoptions['event'] = $legacyevent;
932
            $mform = new update_event_form(null, $formoptions, 'post', '', null, true, $data);
933
        } else {
934
            $legacyevent = null;
935
            $mform = new create_event_form(null, $formoptions, 'post', '', null, true, $data);
936
        }
937
 
938
        if ($validateddata = $mform->get_data()) {
939
            $formmapper = new create_update_form_mapper();
940
            $properties = $formmapper->from_data_to_event_properties($validateddata);
941
 
942
            if (is_null($legacyevent)) {
943
                $legacyevent = new \calendar_event($properties);
944
                // Need to do this in order to initialise the description
945
                // property which then triggers the update function below
946
                // to set the appropriate default properties on the event.
947
                $properties = $legacyevent->properties(true);
948
            }
949
 
950
            if (!calendar_edit_event_allowed($legacyevent, true)) {
951
                throw new \moodle_exception('nopermissiontoupdatecalendar');
952
            }
953
 
954
            $legacyevent->update($properties);
955
            $eventcontext = $legacyevent->context;
956
 
957
            file_remove_editor_orphaned_files($validateddata->description);
958
 
959
            // Take any files added to the description draft file area and
960
            // convert them into the proper event description file area. Also
961
            // parse the description text and replace the URLs to the draft files
962
            // with the @@PLUGIN_FILE@@ placeholder to be persisted in the DB.
963
            $description = file_save_draft_area_files(
964
                $validateddata->description['itemid'],
965
                $eventcontext->id,
966
                'calendar',
967
                'event_description',
968
                $legacyevent->id,
969
                create_event_form::build_editor_options($eventcontext),
970
                $validateddata->description['text']
971
            );
972
 
973
            // If draft files were found then we need to save the new
974
            // description value.
975
            if ($description != $validateddata->description['text']) {
976
                $properties->id = $legacyevent->id;
977
                $properties->description = $description;
978
                $legacyevent->update($properties);
979
            }
980
 
981
            $eventmapper = event_container::get_event_mapper();
982
            $event = $eventmapper->from_legacy_event_to_event($legacyevent);
983
            $cache = new events_related_objects_cache([$event]);
984
            $relatedobjects = [
985
                'context' => $cache->get_context($event),
986
                'course' => $cache->get_course($event),
987
            ];
988
            $exporter = new event_exporter($event, $relatedobjects);
989
            $renderer = $PAGE->get_renderer('core_calendar');
990
 
991
            return [ 'event' => $exporter->export($renderer) ];
992
        } else {
993
            return [ 'validationerror' => true ];
994
        }
995
    }
996
 
997
    /**
998
     * Returns description of method result value.
999
     *
1000
     * @return \core_external\external_description.
1001
     */
1002
    public static function submit_create_update_form_returns() {
1003
        $eventstructure = event_exporter::get_read_structure();
1004
        $eventstructure->required = VALUE_OPTIONAL;
1005
 
1006
        return new external_single_structure(
1007
            array(
1008
                'event' => $eventstructure,
1009
                'validationerror' => new external_value(PARAM_BOOL, 'Invalid form data', VALUE_DEFAULT, false),
1010
            )
1011
        );
1012
    }
1013
 
1014
    /**
1015
     * Get data for the monthly calendar view.
1016
     *
1017
     * @param int $year The year to be shown
1018
     * @param int $month The month to be shown
1019
     * @param int $courseid The course to be included
1020
     * @param int $categoryid The category to be included
1021
     * @param bool $includenavigation Whether to include navigation
1022
     * @param bool $mini Whether to return the mini month view or not
1023
     * @param int $day The day we want to keep as the current day
1024
     * @param string|null $view The view mode for the calendar.
1025
     * @return  array
1026
     */
1027
    public static function get_calendar_monthly_view($year, $month, $courseid, $categoryid, $includenavigation, $mini, $day,
1028
            ?string $view = null) {
1029
        global $USER, $PAGE;
1030
 
1031
        // Parameter validation.
1032
        $params = self::validate_parameters(self::get_calendar_monthly_view_parameters(), [
1033
            'year' => $year,
1034
            'month' => $month,
1035
            'courseid' => $courseid,
1036
            'categoryid' => $categoryid,
1037
            'includenavigation' => $includenavigation,
1038
            'mini' => $mini,
1039
            'day' => $day,
1040
            'view' => $view,
1041
        ]);
1042
 
1043
        $context = \context_user::instance($USER->id);
1044
        self::validate_context($context);
1045
        $PAGE->set_url('/calendar/');
1046
 
1047
        $type = \core_calendar\type_factory::get_calendar_instance();
1048
 
1049
        $time = $type->convert_to_timestamp($params['year'], $params['month'], $params['day']);
1050
        $calendar = \calendar_information::create($time, $params['courseid'], $params['categoryid']);
1051
        self::validate_context($calendar->context);
1052
 
1053
        $view = $params['view'] ?? ($params['mini'] ? 'mini' : 'month');
1054
        list($data, $template) = calendar_get_view($calendar, $view, $params['includenavigation']);
1055
 
1056
        return $data;
1057
    }
1058
 
1059
    /**
1060
     * Returns description of method parameters.
1061
     *
1062
     * @return external_function_parameters
1063
     */
1064
    public static function get_calendar_monthly_view_parameters() {
1065
        return new external_function_parameters(
1066
            [
1067
                'year' => new external_value(PARAM_INT, 'Year to be viewed', VALUE_REQUIRED),
1068
                'month' => new external_value(PARAM_INT, 'Month to be viewed', VALUE_REQUIRED),
1069
                'courseid' => new external_value(PARAM_INT, 'Course being viewed', VALUE_DEFAULT, SITEID, NULL_ALLOWED),
1070
                'categoryid' => new external_value(PARAM_INT, 'Category being viewed', VALUE_DEFAULT, null, NULL_ALLOWED),
1071
                'includenavigation' => new external_value(
1072
                    PARAM_BOOL,
1073
                    'Whether to show course navigation',
1074
                    VALUE_DEFAULT,
1075
                    true,
1076
                    NULL_ALLOWED
1077
                ),
1078
                'mini' => new external_value(
1079
                    PARAM_BOOL,
1080
                    'Whether to return the mini month view or not',
1081
                    VALUE_DEFAULT,
1082
                    false,
1083
                    NULL_ALLOWED
1084
                ),
1085
                'day' => new external_value(PARAM_INT, 'Day to be viewed', VALUE_DEFAULT, 1),
1086
                'view' => new external_value(PARAM_ALPHA, 'The view mode of the calendar', VALUE_DEFAULT, 'month', NULL_ALLOWED),
1087
            ]
1088
        );
1089
    }
1090
 
1091
    /**
1092
     * Returns description of method result value.
1093
     *
1094
     * @return \core_external\external_description
1095
     */
1096
    public static function get_calendar_monthly_view_returns() {
1097
        return \core_calendar\external\month_exporter::get_read_structure();
1098
    }
1099
 
1100
    /**
1101
     * Get data for the daily calendar view.
1102
     *
1103
     * @param   int     $year The year to be shown
1104
     * @param   int     $month The month to be shown
1105
     * @param   int     $day The day to be shown
1106
     * @param   int     $courseid The course to be included
1107
     * @return  array
1108
     */
1109
    public static function get_calendar_day_view($year, $month, $day, $courseid, $categoryid) {
1110
        global $DB, $USER, $PAGE;
1111
 
1112
        // Parameter validation.
1113
        $params = self::validate_parameters(self::get_calendar_day_view_parameters(), [
1114
            'year' => $year,
1115
            'month' => $month,
1116
            'day' => $day,
1117
            'courseid' => $courseid,
1118
            'categoryid' => $categoryid,
1119
        ]);
1120
 
1121
        $context = \context_user::instance($USER->id);
1122
        self::validate_context($context);
1123
 
1124
        $type = \core_calendar\type_factory::get_calendar_instance();
1125
 
1126
        $time = $type->convert_to_timestamp($params['year'], $params['month'], $params['day']);
1127
        $calendar = \calendar_information::create($time, $params['courseid'], $params['categoryid']);
1128
        self::validate_context($calendar->context);
1129
 
1130
        list($data, $template) = calendar_get_view($calendar, 'day');
1131
 
1132
        return $data;
1133
    }
1134
 
1135
    /**
1136
     * Returns description of method parameters.
1137
     *
1138
     * @return external_function_parameters
1139
     */
1140
    public static function get_calendar_day_view_parameters() {
1141
        return new external_function_parameters(
1142
            [
1143
                'year' => new external_value(PARAM_INT, 'Year to be viewed', VALUE_REQUIRED),
1144
                'month' => new external_value(PARAM_INT, 'Month to be viewed', VALUE_REQUIRED),
1145
                'day' => new external_value(PARAM_INT, 'Day to be viewed', VALUE_REQUIRED),
1146
                'courseid' => new external_value(PARAM_INT, 'Course being viewed', VALUE_DEFAULT, SITEID, NULL_ALLOWED),
1147
                'categoryid' => new external_value(PARAM_INT, 'Category being viewed', VALUE_DEFAULT, null, NULL_ALLOWED),
1148
            ]
1149
        );
1150
    }
1151
 
1152
    /**
1153
     * Returns description of method result value.
1154
     *
1155
     * @return \core_external\external_description
1156
     */
1157
    public static function get_calendar_day_view_returns() {
1158
        return \core_calendar\external\calendar_day_exporter::get_read_structure();
1159
    }
1160
 
1161
 
1162
    /**
1163
     * Returns description of method parameters.
1164
     *
1165
     * @return external_function_parameters
1166
     */
1167
    public static function update_event_start_day_parameters() {
1168
        return new external_function_parameters(
1169
            [
1170
                'eventid' => new external_value(PARAM_INT, 'Id of event to be updated', VALUE_REQUIRED),
1171
                'daytimestamp' => new external_value(PARAM_INT, 'Timestamp for the new start day', VALUE_REQUIRED),
1172
            ]
1173
        );
1174
    }
1175
 
1176
    /**
1177
     * Change the start day for the given calendar event to the day that
1178
     * corresponds with the provided timestamp.
1179
     *
1180
     * The timestamp only needs to be anytime within the desired day as only
1181
     * the date data is extracted from it.
1182
     *
1183
     * The event's original time of day is maintained, only the date is shifted.
1184
     *
1185
     * @param int $eventid Id of event to be updated
1186
     * @param int $daytimestamp Timestamp for the new start day
1187
     * @return  array
1188
     */
1189
    public static function update_event_start_day($eventid, $daytimestamp) {
1190
        global $USER, $PAGE;
1191
 
1192
        // Parameter validation.
1193
        $params = self::validate_parameters(self::update_event_start_day_parameters(), [
1194
            'eventid' => $eventid,
1195
            'daytimestamp' => $daytimestamp,
1196
        ]);
1197
 
1198
        $vault = event_container::get_event_vault();
1199
        $mapper = event_container::get_event_mapper();
1200
        $event = $vault->get_event_by_id($eventid);
1201
 
1202
        if (!$event) {
1203
            throw new \moodle_exception('Unable to find event with id ' . $eventid);
1204
        }
1205
 
1206
        $legacyevent = $mapper->from_event_to_legacy_event($event);
1207
 
1208
        if (!calendar_edit_event_allowed($legacyevent, true)) {
1209
            throw new \moodle_exception('nopermissiontoupdatecalendar');
1210
        }
1211
 
1212
        self::validate_context($legacyevent->context);
1213
 
1214
        $newdate = usergetdate($daytimestamp);
1215
        $startdatestring = implode('-', [$newdate['year'], $newdate['mon'], $newdate['mday']]);
1216
        $startdate = new DateTimeImmutable($startdatestring);
1217
        $event = local_api::update_event_start_day($event, $startdate);
1218
        $cache = new events_related_objects_cache([$event]);
1219
        $relatedobjects = [
1220
            'context' => $cache->get_context($event),
1221
            'course' => $cache->get_course($event),
1222
        ];
1223
        $exporter = new event_exporter($event, $relatedobjects);
1224
        $renderer = $PAGE->get_renderer('core_calendar');
1225
 
1226
        return array('event' => $exporter->export($renderer));
1227
    }
1228
 
1229
    /**
1230
     * Returns description of method result value.
1231
     *
1232
     * @return \core_external\external_description
1233
     */
1234
    public static function update_event_start_day_returns() {
1235
        return new external_single_structure(
1236
            array(
1237
                'event' => event_exporter::get_read_structure()
1238
            )
1239
        );
1240
    }
1241
 
1242
    /**
1243
     * Get data for the monthly calendar view.
1244
     *
1245
     * @param   int     $courseid The course to be included
1246
     * @param   int     $categoryid The category to be included
1247
     * @return  array
1248
     */
1249
    public static function get_calendar_upcoming_view($courseid, $categoryid) {
1250
        global $DB, $USER, $PAGE;
1251
 
1252
        // Parameter validation.
1253
        $params = self::validate_parameters(self::get_calendar_upcoming_view_parameters(), [
1254
            'courseid' => $courseid,
1255
            'categoryid' => $categoryid,
1256
        ]);
1257
 
1258
        $context = \context_user::instance($USER->id);
1259
        self::validate_context($context);
1260
        $PAGE->set_url('/calendar/');
1261
 
1262
        $calendar = \calendar_information::create(time(), $params['courseid'], $params['categoryid']);
1263
        self::validate_context($calendar->context);
1264
 
1265
        list($data, $template) = calendar_get_view($calendar, 'upcoming');
1266
 
1267
        return $data;
1268
    }
1269
 
1270
    /**
1271
     * Returns description of method parameters.
1272
     *
1273
     * @return external_function_parameters
1274
     */
1275
    public static function get_calendar_upcoming_view_parameters() {
1276
        return new external_function_parameters(
1277
            [
1278
                'courseid' => new external_value(PARAM_INT, 'Course being viewed', VALUE_DEFAULT, SITEID, NULL_ALLOWED),
1279
                'categoryid' => new external_value(PARAM_INT, 'Category being viewed', VALUE_DEFAULT, null, NULL_ALLOWED),
1280
            ]
1281
        );
1282
    }
1283
 
1284
    /**
1285
     * Returns description of method result value.
1286
     *
1287
     * @return \core_external\external_description
1288
     */
1289
    public static function get_calendar_upcoming_view_returns() {
1290
        return \core_calendar\external\calendar_upcoming_exporter::get_read_structure();
1291
    }
1292
 
1293
 
1294
    /**
1295
     * Returns description of method parameters.
1296
     *
1297
     * @return external_function_parameters.
1298
     * @since  Moodle 3.7
1299
     */
1300
    public static function get_calendar_access_information_parameters() {
1301
        return new external_function_parameters(
1302
            [
1303
                'courseid' => new external_value(PARAM_INT, 'Course to check, empty for site calendar events.', VALUE_DEFAULT, 0),
1304
            ]
1305
        );
1306
    }
1307
 
1308
    /**
1309
     * Convenience function to retrieve some permissions information for the given course calendar.
1310
     *
1311
     * @param int $courseid Course to check, empty for site.
1312
     * @return array The access information
1313
     * @throws moodle_exception
1314
     * @since  Moodle 3.7
1315
     */
1316
    public static function get_calendar_access_information($courseid = 0) {
1317
 
1318
        $params = self::validate_parameters(self::get_calendar_access_information_parameters(), ['courseid' => $courseid]);
1319
 
1320
        if (empty($params['courseid']) || $params['courseid'] == SITEID) {
1321
            $context = \context_system::instance();
1322
        } else {
1323
            $context = \context_course::instance($params['courseid']);
1324
        }
1325
 
1326
        self::validate_context($context);
1327
 
1328
        return [
1329
            'canmanageentries' => has_capability('moodle/calendar:manageentries', $context),
1330
            'canmanageownentries' => has_capability('moodle/calendar:manageownentries', $context),
1331
            'canmanagegroupentries' => has_capability('moodle/calendar:managegroupentries', $context),
1332
            'warnings' => [],
1333
        ];
1334
    }
1335
 
1336
    /**
1337
     * Returns description of method result value.
1338
     *
1339
     * @return \core_external\external_description.
1340
     * @since  Moodle 3.7
1341
     */
1342
    public static function get_calendar_access_information_returns() {
1343
 
1344
        return new external_single_structure(
1345
            [
1346
                'canmanageentries' => new external_value(PARAM_BOOL, 'Whether the user can manage entries.'),
1347
                'canmanageownentries' => new external_value(PARAM_BOOL, 'Whether the user can manage its own entries.'),
1348
                'canmanagegroupentries' => new external_value(PARAM_BOOL, 'Whether the user can manage group entries.'),
1349
                'warnings' => new external_warnings(),
1350
            ]
1351
        );
1352
    }
1353
 
1354
    /**
1355
     * Returns description of method parameters.
1356
     *
1357
     * @return external_function_parameters.
1358
     * @since  Moodle 3.7
1359
     */
1360
    public static function get_allowed_event_types_parameters() {
1361
        return new external_function_parameters(
1362
            [
1363
                'courseid' => new external_value(PARAM_INT, 'Course to check, empty for site.', VALUE_DEFAULT, 0),
1364
            ]
1365
        );
1366
    }
1367
 
1368
    /**
1369
     * Get the type of events a user can create in the given course.
1370
     *
1371
     * @param int $courseid Course to check, empty for site.
1372
     * @return array The types allowed
1373
     * @throws moodle_exception
1374
     * @since  Moodle 3.7
1375
     */
1376
    public static function get_allowed_event_types($courseid = 0) {
1377
 
1378
        $params = self::validate_parameters(self::get_allowed_event_types_parameters(), ['courseid' => $courseid]);
1379
 
1380
        if (empty($params['courseid']) || $params['courseid'] == SITEID) {
1381
            $context = \context_system::instance();
1382
        } else {
1383
            $context = \context_course::instance($params['courseid']);
1384
        }
1385
 
1386
        self::validate_context($context);
1387
 
1388
        $allowedeventtypes = array_filter(calendar_get_allowed_event_types($params['courseid']));
1389
 
1390
        return [
1391
            'allowedeventtypes' => array_keys($allowedeventtypes),
1392
            'warnings' => [],
1393
        ];
1394
    }
1395
 
1396
    /**
1397
     * Returns description of method result value.
1398
     *
1399
     * @return \core_external\external_description.
1400
     * @since  Moodle 3.7
1401
     */
1402
    public static function get_allowed_event_types_returns() {
1403
 
1404
        return new external_single_structure(
1405
            [
1406
                'allowedeventtypes' => new external_multiple_structure(
1407
                    new external_value(PARAM_NOTAGS, 'Allowed event types to be created in the given course.')
1408
                ),
1409
                'warnings' => new external_warnings(),
1410
            ]
1411
        );
1412
    }
1413
 
1414
    /**
1415
     * Convert the specified dates into unix timestamps.
1416
     *
1417
     * @param   array $datetimes Array of arrays containing date time details, each in the format:
1418
     *           ['year' => a, 'month' => b, 'day' => c,
1419
     *            'hour' => d (optional), 'minute' => e (optional), 'key' => 'x' (optional)]
1420
     * @return  array Provided array of dates converted to unix timestamps
1421
     * @throws moodle_exception If one or more of the dates provided does not convert to a valid timestamp.
1422
     */
1423
    public static function get_timestamps($datetimes) {
1424
        $params = self::validate_parameters(self::get_timestamps_parameters(), ['data' => $datetimes]);
1425
 
1426
        $type = \core_calendar\type_factory::get_calendar_instance();
1427
        $timestamps = ['timestamps' => []];
1428
 
1429
        foreach ($params['data'] as $key => $datetime) {
1430
            $hour = $datetime['hour'] ?? 0;
1431
            $minute = $datetime['minute'] ?? 0;
1432
 
1433
            try {
1434
                $timestamp = $type->convert_to_timestamp(
1435
                    $datetime['year'], $datetime['month'], $datetime['day'], $hour, $minute);
1436
 
1437
                $timestamps['timestamps'][] = [
1438
                    'key' => $datetime['key'] ?? $key,
1439
                    'timestamp' => $timestamp,
1440
                ];
1441
 
1442
            } catch (Exception $e) {
1443
                throw new moodle_exception('One or more of the dates provided were invalid');
1444
            }
1445
        }
1446
 
1447
        return $timestamps;
1448
    }
1449
 
1450
    /**
1451
     * Describes the parameters for get_timestamps.
1452
     *
1453
     * @return external_function_parameters
1454
     */
1455
    public static function get_timestamps_parameters() {
1456
        return new external_function_parameters ([
1457
            'data' => new external_multiple_structure(
1458
                new external_single_structure(
1459
                    [
1460
                        'key' => new external_value(PARAM_ALPHANUMEXT, 'key', VALUE_OPTIONAL),
1461
                        'year' => new external_value(PARAM_INT, 'year'),
1462
                        'month' => new external_value(PARAM_INT, 'month'),
1463
                        'day' => new external_value(PARAM_INT, 'day'),
1464
                        'hour' => new external_value(PARAM_INT, 'hour', VALUE_OPTIONAL),
1465
                        'minute' => new external_value(PARAM_INT, 'minute', VALUE_OPTIONAL),
1466
                    ]
1467
                )
1468
            )
1469
        ]);
1470
    }
1471
 
1472
    /**
1473
     * Describes the timestamps return format.
1474
     *
1475
     * @return external_single_structure
1476
     */
1477
    public static function get_timestamps_returns() {
1478
        return new external_single_structure(
1479
            [
1480
                'timestamps' => new external_multiple_structure(
1481
                    new external_single_structure(
1482
                        [
1483
                            'key' => new external_value(PARAM_ALPHANUMEXT, 'Timestamp key'),
1484
                            'timestamp' => new external_value(PARAM_INT, 'Unix timestamp'),
1485
                        ]
1486
                    )
1487
                )
1488
            ]
1489
        );
1490
    }
1491
}