From 60774b28c3435f37ff5088b9211b99740cae4fc3 Mon Sep 17 00:00:00 2001
From: Ryan Wyllie <ryan@moodle.com>
Date: Tue, 28 Feb 2017 03:25:23 +0000
Subject: [PATCH] MDL-57503 calendar: external function get action events by
 course

Added an external function to get action events by course and timesort.

Part of MDL-55611 epic.
---
 .../external/events_related_objects_cache.php | 11 ++-
 calendar/externallib.php                      | 86 +++++++++++++++++++
 lib/db/services.php                           |  9 ++
 3 files changed, 105 insertions(+), 1 deletion(-)

diff --git a/calendar/classes/external/events_related_objects_cache.php b/calendar/classes/external/events_related_objects_cache.php
index 894c6fb16b9..ca9f97fba69 100644
--- a/calendar/classes/external/events_related_objects_cache.php
+++ b/calendar/classes/external/events_related_objects_cache.php
@@ -67,9 +67,18 @@ class events_related_objects_cache {
      * Constructor.
      *
      * @param array $event Array of event_interface events
+     * @param array $courses Array of courses to populate the cache with
      */
-    public function __construct(array $events) {
+    public function __construct(array $events, array $courses = null) {
         $this->events = $events;
+
+        if (!is_null($courses)) {
+            $this->courses = [];
+
+            foreach ($courses as $course) {
+                $this->courses[$course->id] = $course;
+            }
+        }
     }
 
     /**
diff --git a/calendar/externallib.php b/calendar/externallib.php
index 20638f43813..94ae949bdc6 100644
--- a/calendar/externallib.php
+++ b/calendar/externallib.php
@@ -31,6 +31,7 @@ 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;
 
 /**
@@ -383,6 +384,91 @@ class core_calendar_external extends external_api {
         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.
      *
diff --git a/lib/db/services.php b/lib/db/services.php
index c7dbb155395..73176c6a835 100644
--- a/lib/db/services.php
+++ b/lib/db/services.php
@@ -84,6 +84,15 @@ $functions = array(
         'capabilities' => 'moodle/calendar:manageentries, moodle/calendar:manageownentries, moodle/calendar:managegroupentries',
         'ajax' => true,
     ),
+    'core_calendar_get_action_events_by_course' => array(
+        'classname' => 'core_calendar_external',
+        'methodname' => 'get_calendar_action_events_by_course',
+        'description' => 'Get calendar action events by course',
+        'classpath' => 'calendar/externallib.php',
+        'type' => 'read',
+        'capabilities' => 'moodle/calendar:manageentries, moodle/calendar:manageownentries, moodle/calendar:managegroupentries',
+        'ajax' => true,
+    ),
     'core_cohort_add_cohort_members' => array(
         'classname' => 'core_cohort_external',
         'methodname' => 'add_cohort_members',
-- 
2.17.1