From 853228b6a9132c2b38b6d73c95a905277ab37642 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Stefan=20Tollk=C3=BChn?= <s.tollkuehn@bnvb-ingenieure.de>
Date: Wed, 7 Oct 2026 22:57:00 +0200
Subject: [PATCH] fix wrong getCalendarsForUser using getCalendarsForPrincipal

---
 lib/Controller/CalendarController.php | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/lib/Controller/CalendarController.php b/lib/Controller/CalendarController.php
index 3f71716..550e57c 100644
--- a/lib/Controller/CalendarController.php
+++ b/lib/Controller/CalendarController.php
@@ -149,12 +149,18 @@ class CalendarController extends Controller
     /**
      * The user's "Personal" calendar.
      *
-     * getCalendarsForUser() returns ICalendar objects.
+     * getCalendarsForPrincipal() returns ICalendar objects.
      * Only calendars implementing ICreateFromString are writable.
      */
     private function findWritableCalendar(string $userId): ?ICreateFromString
     {
-        $calendars = $this->calendarManager->getCalendarsForUser($userId);
+        /*
+         * IManager kennt keine getCalendarsForUser() –
+         * Kalender werden über die Principal-URI abgefragt.
+         */
+        $principalUri = 'principals/users/' . $userId;
+
+        $calendars = $this->calendarManager->getCalendarsForPrincipal($principalUri);
 
         foreach ($calendars as $calendar) {
             if (!$calendar instanceof ICreateFromString) {