PLUGINS EVENT GROUP MEMBERSHIP CHANGE

Plugin Event: group.membership.change

This cancellable event covers group join, administrative add, and request accept through Action. Player, GroupID, and Role are immutable snapshots; Role is present for add.

host.Events().Listen(event.GroupMembershipChangeName, event.ListenerOptions{}, func(_ context.Context, current event.Event) error {
	change := current.(*event.GroupMembershipChange)
	if exceedsWeeklyLimit(change.Player.ID) {
		change.SetCancelled(true)
	}
	return nil
})

Native authorization runs first where applicable. Cancellation prevents the corresponding membership store method and projections.