Calendar - Events/Shifts update

[A-Guldborg]

When subscribed to a calendar where an event is edited, e.g. the title/description of the event should update a version number on the event itself. This allows calendar integrations to properly update according to the newest version.

This also includes "deleted" events, e.g. when a shift is grabbed by another member. We might need to chance how we store engagements going forward (with a flag such as disabled: true once the shift is grabbed), such that we can set status: "CANCELLED" on the calendar event.

Note that this might be difficult to reproduce, as the calendar synchronization happens on whatever schedule the calendar app wants and not all calendar apps treats omitted events equally.

[lucasfth]

@A-Guldborg was this not fixed? I at least remember you talking about it being fixed.
Side note. I might be able to help a bit Thursday, prior to GA, if something important needs to be addressed

[A-Guldborg]

Nope. It works for me in Google Calendar but I can't test all calendar applications and with research I've understood that for consistency we should send a new calendar event with eventstatus: CANCELLED (using the ics module at least).

I think it works okay for most calendar applications since we are sending out IDs each time as well, so most calendar applications are smart enough to know that a missing but upcoming event should be deleted, and if we have made any changes such that two calendar events with the same ID it should then update rather than duplicate the event. But it might not be 100% consistent across calendar applications.