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externallib.php
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externallib.php
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<?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/>.
/**
* External calendar API
*
* @package core_calendar
* @category external
* @copyright 2012 Ankit Agarwal
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
* @since Moodle 2.5
*/
defined('MOODLE_INTERNAL') || die;
require_once("$CFG->libdir/externallib.php");
use \core_calendar\local\api as local_api;
use \core_calendar\external\events_exporter;
use \core_calendar\external\events_grouped_by_course_exporter;
use \core_calendar\external\events_related_objects_cache;
/**
* Calendar external functions
*
* @package core_calendar
* @category external
* @copyright 2012 Ankit Agarwal
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
* @since Moodle 2.5
*/
class core_calendar_external extends external_api {
/**
* Returns description of method parameters
*
* @return external_function_parameters
* @since Moodle 2.5
*/
public static function delete_calendar_events_parameters() {
return new external_function_parameters(
array('events' => new external_multiple_structure(
new external_single_structure(
array(
'eventid' => new external_value(PARAM_INT, 'Event ID', VALUE_REQUIRED, '', NULL_NOT_ALLOWED),
'repeat' => new external_value(PARAM_BOOL, 'Delete comeplete series if repeated event')
), 'List of events to delete'
)
)
)
);
}
/**
* Delete Calendar events
*
* @param array $eventids A list of event ids with repeat flag to delete
* @return null
* @since Moodle 2.5
*/
public static function delete_calendar_events($events) {
global $CFG, $DB;
require_once($CFG->dirroot."/calendar/lib.php");
// Parameter validation.
$params = self::validate_parameters(self:: delete_calendar_events_parameters(), array('events' => $events));
$transaction = $DB->start_delegated_transaction();
foreach ($params['events'] as $event) {
$eventobj = calendar_event::load($event['eventid']);
// Let's check if the user is allowed to delete an event.
if (!calendar_edit_event_allowed($eventobj)) {
throw new moodle_exception("nopermissions");
}
// Time to do the magic.
$eventobj->delete($event['repeat']);
}
// Everything done smoothly, let's commit.
$transaction->allow_commit();
return null;
}
/**
* Returns description of method result value
*
* @return external_description
* @since Moodle 2.5
*/
public static function delete_calendar_events_returns() {
return null;
}
/**
* Returns description of method parameters
*
* @return external_function_parameters
* @since Moodle 2.5
*/
public static function get_calendar_events_parameters() {
return new external_function_parameters(
array('events' => new external_single_structure(
array(
'eventids' => new external_multiple_structure(
new external_value(PARAM_INT, 'event ids')
, 'List of event ids',
VALUE_DEFAULT, array(), NULL_ALLOWED
),
'courseids' => new external_multiple_structure(
new external_value(PARAM_INT, 'course ids')
, 'List of course ids for which events will be returned',
VALUE_DEFAULT, array(), NULL_ALLOWED
),
'groupids' => new external_multiple_structure(
new external_value(PARAM_INT, 'group ids')
, 'List of group ids for which events should be returned',
VALUE_DEFAULT, array(), NULL_ALLOWED
)
), 'Event details', VALUE_DEFAULT, array()),
'options' => new external_single_structure(
array(
'userevents' => new external_value(PARAM_BOOL,
"Set to true to return current user's user events",
VALUE_DEFAULT, true, NULL_ALLOWED),
'siteevents' => new external_value(PARAM_BOOL,
"Set to true to return global events",
VALUE_DEFAULT, true, NULL_ALLOWED),
'timestart' => new external_value(PARAM_INT,
"Time from which events should be returned",
VALUE_DEFAULT, 0, NULL_ALLOWED),
'timeend' => new external_value(PARAM_INT,
"Time to which the events should be returned. We treat 0 and null as no end",
VALUE_DEFAULT, 0, NULL_ALLOWED),
'ignorehidden' => new external_value(PARAM_BOOL,
"Ignore hidden events or not",
VALUE_DEFAULT, true, NULL_ALLOWED),
), 'Options', VALUE_DEFAULT, array())
)
);
}
/**
* Get Calendar events
*
* @param array $events A list of events
* @param array $options various options
* @return array Array of event details
* @since Moodle 2.5
*/
public static function get_calendar_events($events = array(), $options = array()) {
global $SITE, $DB, $USER, $CFG;
require_once($CFG->dirroot."/calendar/lib.php");
// Parameter validation.
$params = self::validate_parameters(self::get_calendar_events_parameters(), array('events' => $events, 'options' => $options));
$funcparam = array('courses' => array(), 'groups' => array());
$hassystemcap = has_capability('moodle/calendar:manageentries', context_system::instance());
$warnings = array();
// Let us findout courses that we can return events from.
if (!$hassystemcap) {
$courses = enrol_get_my_courses('id');
$courses = array_keys($courses);
foreach ($params['events']['courseids'] as $id) {
try {
$context = context_course::instance($id);
self::validate_context($context);
$funcparam['courses'][] = $id;
} catch (Exception $e) {
$warnings[] = array(
'item' => 'course',
'itemid' => $id,
'warningcode' => 'nopermissions',
'message' => 'No access rights in course context '.$e->getMessage().$e->getTraceAsString()
);
}
}
} else {
$courses = $params['events']['courseids'];
$funcparam['courses'] = $courses;
}
// Let us findout groups that we can return events from.
if (!$hassystemcap) {
$groups = groups_get_my_groups();
$groups = array_keys($groups);
foreach ($params['events']['groupids'] as $id) {
if (in_array($id, $groups)) {
$funcparam['groups'][] = $id;
} else {
$warnings[] = array('item' => $id, 'warningcode' => 'nopermissions', 'message' => 'you do not have permissions to access this group');
}
}
} else {
$groups = $params['events']['groupids'];
$funcparam['groups'] = $groups;
}
// Do we need user events?
if (!empty($params['options']['userevents'])) {
$funcparam['users'] = array($USER->id);
} else {
$funcparam['users'] = false;
}
// Do we need site events?
if (!empty($params['options']['siteevents'])) {
$funcparam['courses'][] = $SITE->id;
}
// We treat 0 and null as no end.
if (empty($params['options']['timeend'])) {
$params['options']['timeend'] = PHP_INT_MAX;
}
// Event list does not check visibility and permissions, we'll check that later.
$eventlist = calendar_get_legacy_events($params['options']['timestart'], $params['options']['timeend'],
$funcparam['users'], $funcparam['groups'], $funcparam['courses'], true, $params['options']['ignorehidden']);
// WS expects arrays.
$events = array();
// We need to get events asked for eventids.
if ($eventsbyid = calendar_get_events_by_id($params['events']['eventids'])) {
$eventlist += $eventsbyid;
}
foreach ($eventlist as $eventid => $eventobj) {
$event = (array) $eventobj;
// Description formatting.
$calendareventobj = new calendar_event($event);
list($event['description'], $event['format']) = $calendareventobj->format_external_text();
if ($hassystemcap) {
// User can see everything, no further check is needed.
$events[$eventid] = $event;
} else if (!empty($eventobj->modulename)) {
$courseid = $eventobj->courseid;
if (!$courseid) {
if (!$calendareventobj->context || !($context = $calendareventobj->context->get_course_context(false))) {
continue;
}
$courseid = $context->instanceid;
}
$instances = get_fast_modinfo($courseid)->get_instances_of($eventobj->modulename);
if (!empty($instances[$eventobj->instance]->uservisible)) {
$events[$eventid] = $event;
}
} else {
// Can the user actually see this event?
$eventobj = calendar_event::load($eventobj);
if (($eventobj->courseid == $SITE->id) ||
(!empty($eventobj->groupid) && in_array($eventobj->groupid, $groups)) ||
(!empty($eventobj->courseid) && in_array($eventobj->courseid, $courses)) ||
($USER->id == $eventobj->userid) ||
(calendar_edit_event_allowed($eventid))) {
$events[$eventid] = $event;
} else {
$warnings[] = array('item' => $eventid, 'warningcode' => 'nopermissions', 'message' => 'you do not have permissions to view this event');
}
}
}
return array('events' => $events, 'warnings' => $warnings);
}
/**
* Returns description of method result value
*
* @return external_description
* @since Moodle 2.5
*/
public static function get_calendar_events_returns() {
return new external_single_structure(array(
'events' => new external_multiple_structure( new external_single_structure(
array(
'id' => new external_value(PARAM_INT, 'event id'),
'name' => new external_value(PARAM_TEXT, 'event name'),
'description' => new external_value(PARAM_RAW, 'Description', VALUE_OPTIONAL, null, NULL_ALLOWED),
'format' => new external_format_value('description'),
'courseid' => new external_value(PARAM_INT, 'course id'),
'groupid' => new external_value(PARAM_INT, 'group id'),
'userid' => new external_value(PARAM_INT, 'user id'),
'repeatid' => new external_value(PARAM_INT, 'repeat id'),
'modulename' => new external_value(PARAM_TEXT, 'module name', VALUE_OPTIONAL, null, NULL_ALLOWED),
'instance' => new external_value(PARAM_INT, 'instance id'),
'eventtype' => new external_value(PARAM_TEXT, 'Event type'),
'timestart' => new external_value(PARAM_INT, 'timestart'),
'timeduration' => new external_value(PARAM_INT, 'time duration'),
'visible' => new external_value(PARAM_INT, 'visible'),
'uuid' => new external_value(PARAM_TEXT, 'unique id of ical events', VALUE_OPTIONAL, null, NULL_NOT_ALLOWED),
'sequence' => new external_value(PARAM_INT, 'sequence'),
'timemodified' => new external_value(PARAM_INT, 'time modified'),
'subscriptionid' => new external_value(PARAM_INT, 'Subscription id', VALUE_OPTIONAL, null, NULL_ALLOWED),
), 'event')
),
'warnings' => new external_warnings()
)
);
}
/**
* Returns description of method parameters.
*
* @since Moodle 3.3
* @return external_function_parameters
*/
public static function get_calendar_action_events_by_timesort_parameters() {
return new external_function_parameters(
array(
'timesortfrom' => new external_value(PARAM_INT, 'Time sort from', VALUE_DEFAULT, 0),
'timesortto' => new external_value(PARAM_INT, 'Time sort to', VALUE_DEFAULT, null),
'aftereventid' => new external_value(PARAM_INT, 'The last seen event id', VALUE_DEFAULT, 0),
'limitnum' => new external_value(PARAM_INT, 'Limit number', VALUE_DEFAULT, 20)
)
);
}
/**
* Get calendar action events based on the timesort value.
*
* @since Moodle 3.3
* @param null|int $timesortfrom Events after this time (inclusive)
* @param null|int $timesortto Events before this time (inclusive)
* @param null|int $aftereventid Get events with ids greater than this one
* @param int $limitnum Limit the number of results to this value
* @return array
*/
public static function get_calendar_action_events_by_timesort($timesortfrom = 0, $timesortto = null,
$aftereventid = 0, $limitnum = 20) {
global $CFG, $PAGE, $USER;
require_once($CFG->dirroot . '/calendar/lib.php');
$user = null;
$params = self::validate_parameters(
self::get_calendar_action_events_by_timesort_parameters(),
[
'timesortfrom' => $timesortfrom,
'timesortto' => $timesortto,
'aftereventid' => $aftereventid,
'limitnum' => $limitnum,
]
);
$context = \context_user::instance($USER->id);
self::validate_context($context);
if (empty($params['aftereventid'])) {
$params['aftereventid'] = null;
}
$renderer = $PAGE->get_renderer('core_calendar');
$events = local_api::get_action_events_by_timesort(
$params['timesortfrom'],
$params['timesortto'],
$params['aftereventid'],
$params['limitnum']
);
$exportercache = new events_related_objects_cache($events);
$exporter = new events_exporter($events, ['cache' => $exportercache]);
return $exporter->export($renderer);
}
/**
* Returns description of method result value.
*
* @since Moodle 3.3
* @return external_description
*/
public static function get_calendar_action_events_by_timesort_returns() {
return events_exporter::get_read_structure();
}
/**
* Returns description of method parameters.
*
* @return external_function_parameters
*/
public static function get_calendar_action_events_by_course_parameters() {
return new external_function_parameters(
array(
'courseid' => new external_value(PARAM_INT, 'Course id'),
'timesortfrom' => new external_value(PARAM_INT, 'Time sort from', VALUE_DEFAULT, null),
'timesortto' => new external_value(PARAM_INT, 'Time sort to', VALUE_DEFAULT, null),
'aftereventid' => new external_value(PARAM_INT, 'The last seen event id', VALUE_DEFAULT, 0),
'limitnum' => new external_value(PARAM_INT, 'Limit number', VALUE_DEFAULT, 20)
)
);
}
/**
* Get calendar action events for the given course.
*
* @since Moodle 3.3
* @param int $courseid Only events in this course
* @param null|int $timesortfrom Events after this time (inclusive)
* @param null|int $timesortto Events before this time (inclusive)
* @param null|int $aftereventid Get events with ids greater than this one
* @param int $limitnum Limit the number of results to this value
* @return array
*/
public static function get_calendar_action_events_by_course(
$courseid, $timesortfrom = null, $timesortto = null, $aftereventid = 0, $limitnum = 20) {
global $CFG, $PAGE, $USER;
require_once($CFG->dirroot . '/calendar/lib.php');
$user = null;
$params = self::validate_parameters(
self::get_calendar_action_events_by_course_parameters(),
[
'courseid' => $courseid,
'timesortfrom' => $timesortfrom,
'timesortto' => $timesortto,
'aftereventid' => $aftereventid,
'limitnum' => $limitnum,
]
);
$context = \context_user::instance($USER->id);
self::validate_context($context);
if (empty($params['aftereventid'])) {
$params['aftereventid'] = null;
}
$courses = enrol_get_my_courses('*', 'visible DESC,sortorder ASC', 0, [$courseid]);
$courses = array_values($courses);
if (empty($courses)) {
return [];
}
$course = $courses[0];
$renderer = $PAGE->get_renderer('core_calendar');
$events = local_api::get_action_events_by_course(
$course,
$params['timesortfrom'],
$params['timesortto'],
$params['aftereventid'],
$params['limitnum']
);
$exportercache = new events_related_objects_cache($events, $courses);
$exporter = new events_exporter($events, ['cache' => $exportercache]);
return $exporter->export($renderer);
}
/**
* Returns description of method result value.
*
* @return external_description
*/
public static function get_calendar_action_events_by_course_returns() {
return events_exporter::get_read_structure();
}
/**
* Returns description of method parameters.
*
* @return external_function_parameters
*/
public static function get_calendar_action_events_by_courses_parameters() {
return new external_function_parameters(
array(
'courseids' => new external_multiple_structure(
new external_value(PARAM_INT, 'Course id')
),
'timesortfrom' => new external_value(PARAM_INT, 'Time sort from', VALUE_DEFAULT, null),
'timesortto' => new external_value(PARAM_INT, 'Time sort to', VALUE_DEFAULT, null),
'limitnum' => new external_value(PARAM_INT, 'Limit number', VALUE_DEFAULT, 10)
)
);
}
/**
* Get calendar action events for a given list of courses.
*
* @since Moodle 3.3
* @param array $courseids Only include events for these courses
* @param null|int $timesortfrom Events after this time (inclusive)
* @param null|int $timesortto Events before this time (inclusive)
* @param int $limitnum Limit the number of results per course to this value
* @return array
*/
public static function get_calendar_action_events_by_courses(
array $courseids, $timesortfrom = null, $timesortto = null, $limitnum = 10) {
global $CFG, $PAGE, $USER;
require_once($CFG->dirroot . '/calendar/lib.php');
$user = null;
$params = self::validate_parameters(
self::get_calendar_action_events_by_courses_parameters(),
[
'courseids' => $courseids,
'timesortfrom' => $timesortfrom,
'timesortto' => $timesortto,
'limitnum' => $limitnum,
]
);
$context = \context_user::instance($USER->id);
self::validate_context($context);
if (empty($params['courseids'])) {
return ['groupedbycourse' => []];
}
$renderer = $PAGE->get_renderer('core_calendar');
$courses = enrol_get_my_courses('*', 'visible DESC,sortorder ASC', 0, $params['courseids']);
$courses = array_values($courses);
if (empty($courses)) {
return ['groupedbycourse' => []];
}
$events = local_api::get_action_events_by_courses(
$courses,
$params['timesortfrom'],
$params['timesortto'],
$params['limitnum']
);
if (empty($events)) {
return ['groupedbycourse' => []];
}
$exportercache = new events_related_objects_cache($events, $courses);
$exporter = new events_grouped_by_course_exporter($events, ['cache' => $exportercache]);
return $exporter->export($renderer);
}
/**
* Returns description of method result value.
*
* @return external_description
*/
public static function get_calendar_action_events_by_courses_returns() {
return events_grouped_by_course_exporter::get_read_structure();
}
/**
* Returns description of method parameters.
*
* @return external_function_parameters.
* @since Moodle 2.5
*/
public static function create_calendar_events_parameters() {
// Userid is always current user, so no need to get it from client.
// Module based calendar events are not allowed here. Hence no need of instance and modulename.
// subscription id and uuid is not allowed as this is not an ical api.
return new external_function_parameters(
array('events' => new external_multiple_structure(
new external_single_structure(
array(
'name' => new external_value(PARAM_TEXT, 'event name', VALUE_REQUIRED, '', NULL_NOT_ALLOWED),
'description' => new external_value(PARAM_RAW, 'Description', VALUE_DEFAULT, null, NULL_ALLOWED),
'format' => new external_format_value('description', VALUE_DEFAULT),
'courseid' => new external_value(PARAM_INT, 'course id', VALUE_DEFAULT, 0, NULL_NOT_ALLOWED),
'groupid' => new external_value(PARAM_INT, 'group id', VALUE_DEFAULT, 0, NULL_NOT_ALLOWED),
'repeats' => new external_value(PARAM_INT, 'number of repeats', VALUE_DEFAULT, 0, NULL_NOT_ALLOWED),
'eventtype' => new external_value(PARAM_TEXT, 'Event type', VALUE_DEFAULT, 'user', NULL_NOT_ALLOWED),
'timestart' => new external_value(PARAM_INT, 'timestart', VALUE_DEFAULT, time(), NULL_NOT_ALLOWED),
'timeduration' => new external_value(PARAM_INT, 'time duration', VALUE_DEFAULT, 0, NULL_NOT_ALLOWED),
'visible' => new external_value(PARAM_INT, 'visible', VALUE_DEFAULT, 1, NULL_NOT_ALLOWED),
'sequence' => new external_value(PARAM_INT, 'sequence', VALUE_DEFAULT, 1, NULL_NOT_ALLOWED),
), 'event')
)
)
);
}
/**
* Delete Calendar events.
*
* @param array $events A list of events to create.
* @return array array of events created.
* @since Moodle 2.5
* @throws moodle_exception if user doesnt have the permission to create events.
*/
public static function create_calendar_events($events) {
global $CFG, $DB, $USER;
require_once($CFG->dirroot."/calendar/lib.php");
// Parameter validation.
$params = self::validate_parameters(self::create_calendar_events_parameters(), array('events' => $events));
$transaction = $DB->start_delegated_transaction();
$return = array();
$warnings = array();
foreach ($params['events'] as $event) {
// Let us set some defaults.
$event['userid'] = $USER->id;
$event['modulename'] = '';
$event['instance'] = 0;
$event['subscriptionid'] = null;
$event['uuid']= '';
$event['format'] = external_validate_format($event['format']);
if ($event['repeats'] > 0) {
$event['repeat'] = 1;
} else {
$event['repeat'] = 0;
}
$eventobj = new calendar_event($event);
// Let's check if the user is allowed to delete an event.
if (!calendar_add_event_allowed($eventobj)) {
$warnings [] = array('item' => $event['name'], 'warningcode' => 'nopermissions', 'message' => 'you do not have permissions to create this event');
continue;
}
// Let's create the event.
$var = $eventobj->create($event);
$var = (array)$var->properties();
if ($event['repeat']) {
$children = $DB->get_records('event', array('repeatid' => $var['id']));
foreach ($children as $child) {
$return[] = (array) $child;
}
} else {
$return[] = $var;
}
}
// Everything done smoothly, let's commit.
$transaction->allow_commit();
return array('events' => $return, 'warnings' => $warnings);
}
/**
* Returns description of method result value.
*
* @return external_description.
* @since Moodle 2.5
*/
public static function create_calendar_events_returns() {
return new external_single_structure(
array(
'events' => new external_multiple_structure( new external_single_structure(
array(
'id' => new external_value(PARAM_INT, 'event id'),
'name' => new external_value(PARAM_TEXT, 'event name'),
'description' => new external_value(PARAM_RAW, 'Description', VALUE_OPTIONAL),
'format' => new external_format_value('description'),
'courseid' => new external_value(PARAM_INT, 'course id'),
'groupid' => new external_value(PARAM_INT, 'group id'),
'userid' => new external_value(PARAM_INT, 'user id'),
'repeatid' => new external_value(PARAM_INT, 'repeat id', VALUE_OPTIONAL),
'modulename' => new external_value(PARAM_TEXT, 'module name', VALUE_OPTIONAL),
'instance' => new external_value(PARAM_INT, 'instance id'),
'eventtype' => new external_value(PARAM_TEXT, 'Event type'),
'timestart' => new external_value(PARAM_INT, 'timestart'),
'timeduration' => new external_value(PARAM_INT, 'time duration'),
'visible' => new external_value(PARAM_INT, 'visible'),
'uuid' => new external_value(PARAM_TEXT, 'unique id of ical events', VALUE_OPTIONAL, '', NULL_NOT_ALLOWED),
'sequence' => new external_value(PARAM_INT, 'sequence'),
'timemodified' => new external_value(PARAM_INT, 'time modified'),
'subscriptionid' => new external_value(PARAM_INT, 'Subscription id', VALUE_OPTIONAL),
), 'event')
),
'warnings' => new external_warnings()
)
);
}
}