Features, Behaviours and Limitations

Features

EventSync creates a calendar in your Google account for each Discord Server you connect with
EventSync cannot access any other calendars or events
Events are added on creation, updated when modified, and marked as cancelled when deleted
Events in Google Calendar link back to the Discord Event

/calendar connect - Links the current Discord Server to your Google Calendar
/calendar disconnect - Deletes the link between the current Discord Server and your Google Calendar. Events will stop syncing and you will need to run the connect command again to resume syncing.

When you connect to EventSync in a server, all existing events are immediately synced
When an event is created an event is created in all linked calendars
When an event is updated it is updated in all linked calendars
When an event is deleted the title is prefixed with CANCELLED: in all linked calendars
When an event ends in Discord nothing is done in the linked calendars
EventSync creates a calendar with the same name as the Discord Server
- It is safe to rename the calendar in Google Calendar

Running /calendar disconnect removes the link between the Discord Server you run it in and your Google Calendar account
If EventSync is removed from a Discord Server, all syncing will stop
If a user revokes access to their Google Account (here) then all syncing will stop for that user across every Discord Server they had previously linked
None of these operations will delete the calendar - this must be done manually

Current limitations. They may change as EventSync is worked on.