[korganizer] [Bug 421443] New: KOrganizer does not sync reliably with Zoho Calendars via CalDAV - pulls wrong remote CalDAV calendar URL

[JJ Emilien]

https://bugs.kde.org/show_bug.cgi?id=421443

            Bug ID: 421443
           Summary: KOrganizer does not sync reliably with Zoho Calendars
                    via CalDAV - pulls wrong remote CalDAV calendar URL
           Product: korganizer
           Version: 5.13.3
          Platform: Kubuntu Packages
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: groupware
          Assignee: kdepim-bugs at kde.org
          Reporter: jjemil808 at zoho.com
  Target Milestone: ---

Created attachment 128409
  --> https://bugs.kde.org/attachment.cgi?id=128409&action=edit
partial screenshot of CalDAV remote URLs

SUMMARY
KOrganizer does not pull events inbound from Zoho Calendars. It can only sync
one event outbound to the Zoho Calendar. After successfully syncing that event
to Zoho Calendar, akonadiconsole reports that the event is "dirty" and
KOrganizer stops syncing any more events outbound to Zoho calendar.

STEPS TO REPRODUCE
1. Create a free email account at mail.zoho.com
2. With email account credentials, go to Zoho Calendar at
https://calendar.zoho.com/mycalendar and create an event 
3. Subscribe to the US Holidays calendar on the Zoho Calendar website
4. Create a free account at trip planner website Tripit.com
5. Obtain the link for the Tripit calendar on Tripit.com
6. On the Zoho Calendar website, subscribe to the Tripit calendar
7. In mail.zoho.com settings, create app specific password for KOrganizer

OBSERVED RESULT
In KOrganizer, when adding the CalDAV configuration server URL
https://calendar.zoho.com, KOrganizer will correctly fetch the Zoho calendar
collection consisting of the zoho calendar (write + read),the US Holidays
calendar (read only), and the Tripit calendar (read only).

The calDAV remote calendar URLs take the form
https://calendar.zoho.com/caldav/calendarID/event

The Zoho calendar has the correct CalDAV remote URL

The US Holidays remote CalDAV URL is wrong. The calendarID for US Holidays is
wrongly stringed together sequentially with the calendarID for Zoho calendar.

The Tripit remote CalDAV URL is wrong. The calendarID for Tripit is wrongly
stringed together sequentially with the calendarID for Zoho calendar.

(See attachment for a partial screenshot of the remote CalDAV URLs)

The event created on the Zoho calendar website will not sync inbound to the
KOrganizer calendar

The events from US Holidays calendar and Tripit calendar don't sync inbound to
the KOrganizer calendar

One event added to the Zoho calendar in KOrganizer will sync outbound to the
Zoho calendar website. But no more events will sync outbound to the Zoho
calendar afterwards, as akonadiconsole reports that event created in KOrganizer
as being "dirty"

EXPECTED RESULT
When adding the CalDAV configuration server URL https://calendar.zoho.com, it
should fetch the entire calendar collection with the correct CalDAV remote
URLs.
What's worse is there's no way to edit the wrong remote URLs.
In akonadiconsole, Browser tab, Calendar folder properties, Internals tab, the
remote URL is there, but it says in red letters: "Do not even think about
changing anything in here!"

Events from Zoho calendar in KOrganizer should sync both ways with the Zoho
calendar website.
Events from US Holidays calendar should sync inbound in read-only with
KOrganizer
Events from Tripit calendar should sync inbound in read-only with KOrganizer


SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Kubuntu 20.04
(available in About System)
KDE Plasma Version: 5.18.4
KDE Frameworks Version: 5.68.0
Qt Version: 5.12.8

ADDITIONAL INFORMATION

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