From 2a12b5f6ed874f2cc699890c593eb35f2cdb2b14 Mon Sep 17 00:00:00 2001
From: yflory <yann.flory@xwiki.com>
Date: Tue, 20 Apr 2021 16:50:47 +0200
Subject: [PATCH] Fix timezone errors on import

---
 www/calendar/export.js | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/www/calendar/export.js b/www/calendar/export.js
index 7eb70e4de..64775762b 100644
--- a/www/calendar/export.js
+++ b/www/calendar/export.js
@@ -129,6 +129,15 @@ define([
             //var method = vcalendar.getFirstPropertyValue('method');
             //if (method !== "PUBLISH") { return void cb('NOT_SUPPORTED'); }
 
+            // Add all timezones in iCalendar object to TimezoneService
+            // if they are not already registered.
+            var timezones = vcalendar.getAllSubcomponents("vtimezone");
+            timezones.forEach(function (timezone) {
+                if (!(ICAL.TimezoneService.has(timezone.getFirstPropertyValue("tzid")))) {
+                    ICAL.TimezoneService.register(timezone);
+                }
+            });
+
             var events = vcalendar.getAllSubcomponents('vevent');
             events.forEach(function (ev) {
                 var uid = ev.getFirstPropertyValue('uid');