Calendar invite is resent on chaging of the event

[rullzer]

1. userA creates an event and invites userB
2. userB accepts the invite
3. userA notices the timeslot has to change and moves the event by half an hour

Now userB receives another invite e-mail saying that userA invites them to eventX etc.

It should say something like. The eventX which you are attending has been rescheduled to time HH:MM on DD/MM/YYYY or something like that.

There can still be buttons to modify your presense. But it should be made clear this is an existing event.

[nextcloud-bot]

GitMate.io thinks possibly related issues are #3830 (No calendar invitation send for event in shared calendars ), #4880 (Calendars invitations for event in shared calendars), #10488 (Support invite-rsvp-checkstatus calendar workflow with exchange), #3044 ([WIP] Calendar events email reminders), and #3014 (Calendar event invitation automatically creates a new 'personal' calendar).

[georgehrke]

This is more complex than it sounds. Both new invitations and updated invitations use the ITIP message type REQUEST. Plus inside the IMipPlugin class we don't have access to a diff of changes, but only to the new calendar data, so we don't even know what changed.

Something for Nextcloud 16.

[rullzer]

@georgehrke yes fair enough. Lets discuss together next time if/how we can improve this.

[MorrisJobke]

@georgehrke @rullzer 🏓 16 or 17?

[biva]

How is it progressing? On Thunderbird, if the organiser changes the dates for an event that I already accepted, then I cannot accept or reject the new dates, and the event is not updated in my calendar. I see only a message saying that "This message contains an event that has already been processed"

Is it related to this current issue?

What I would like to see is:

1. the event is updated with the new dates
2. I can see the buttons to accept or reject these new dates

[onny]

Wasn't this already fixed with?

• Include more information in iMIP email and show diff information on updating an event #35743
• Invitation mail: Change subject if event got updated #36661

[ChristophWurst]

Probably :)