While the missedmessage_hook logic originally did a reasonably good
job of avoiding double-sending notifications, there was a corner case
it didn't handle, namely a user who had been presence-idle when a
message was sent and became also event-queue-idle as well within the
next 10 minutes. For those users, they got a notification at message
send time, and the missedmessage_hook would deliver it a second time.
We fix this by just checking the conveniently available push_notified
and email_notified variables that indicate whether the message already
had a notification triggered.
Fixes#7031.
This checks what arguments it passes into the enqueuing function.
Note, however, that the arguments are wrong for various cases, we'll
update the tests as we fix those bugs.
This ensures that as we expand the logic for under what circumstances
email and push notifications should be sent, we can be confident about
this code path always doing the right thing.
Tim Abbott