1 files changed, 80 insertions, 0 deletions
diff --git a/lib/models/calendar/CalendarCourseDate.php b/lib/models/calendar/CalendarCourseDate.php
new file mode 100644
index 0000000..370dcd1
--- /dev/null
+++ b/lib/models/calendar/CalendarCourseDate.php
@@ -0,0 +1,80 @@
+<?php
+
+/**
+ * CalendarCourseDate is a specialisation of CourseDate for
+ * course dates that are displayed in the personal calendar.
+ */
+class CalendarCourseDate extends CourseDate
+{
+    public static function getEvents(DateTime $begin, DateTime $end, string $range_id): array
+    {
+        $events = [];
+        parent::findEachBySQL(
+            function ($e) use (&$events, $range_id) {
+                if (self::checkRelated($e, $range_id)) {
+                    $events[] = $e;
+                }
+            },
+            "JOIN `seminar_user`
+               ON `seminar_user`.`seminar_id` = `termine`.`range_id`
+             WHERE `seminar_user`.`user_id` = :user_id
+               AND `seminar_user`.`bind_calendar` = '1'
+               AND `termine`.`date` BETWEEN :begin AND :end
+               AND (
+                   IFNULL(`termine`.`metadate_id`, '') = ''
+                   OR `termine`.`metadate_id` NOT IN (
+                       SELECT `metadate_id`
+                       FROM `schedule_seminare`
+                       WHERE `user_id` = :user_id
+                         AND `visible` = 0
+                   )
+               )
+               ORDER BY date",
+            [
+                'begin'   => $begin->getTimestamp(),
+                'end'     => $end->getTimestamp(),
+                'user_id' => $range_id
+            ]
+        );
+        return $events;
+    }
+
+    /**
+     * Checks if given user is the responsible lecturer or is member of a
+     * related group.
+     *
+     * @global object $perm The global perm object.
+     * @param CalendarCourseDate $event The course event to check against.
+     * @param string $user_id The id of the user.
+     * @return boolean
+     */
+    protected static function checkRelated(CalendarCourseDate $event, string $user_id): bool
+    {
+        $check_related = false;
+        $permission = $GLOBALS['perm']->get_studip_perm($event->range_id, $user_id);
+        switch ($permission) {
+            case 'dozent' :
+                $related_persons = $event->dozenten->pluck('user_id');
+                if (count($related_persons) > 0) {
+                    $check_related = in_array($user_id, $related_persons);
+                } else {
+                    $check_related = true;
+                }
+                break;
+            case 'tutor' :
+                $check_related = true;
+                break;
+            default :
+                $group_ids = $event->statusgruppen->pluck('statusgruppe_id');
+                if (count($group_ids) > 0) {
+                    $member = StatusgruppeUser::findBySQL(
+                        'statusgruppe_id IN(?) AND user_id = ?',
+                        [$group_ids, $user_id]);
+                    $check_related = count($member) > 0;
+                } else {
+                    $check_related = true;
+                }
+        }
+        return $check_related;
+    }
+}