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backfill: add notification of disappearing messages at correct timestamp

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This makes it so that the timestamp of the chat in Matrix looks correct,
even though the message is not there to be bridged since it has
disappeared.
This commit is contained in:
Sumner Evans 2022-04-29 16:59:27 -06:00
parent 4c0d43fee7
commit 89131bd20c
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GPG key ID: 8904527AB50022FD
1 changed files with 35 additions and 1 deletions
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36
historysync.go
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@ -158,7 +158,19 @@ func (user *User) backfillInChunks(req *database.Backfill, conv *database.Histor
}
}
allMsgs := user.bridge.DB.HistorySyncQuery.GetMessagesBetween(user.MXID, conv.ConversationID, req.TimeStart, req.TimeEnd, req.MaxTotalEvents)
if len(allMsgs) == 0 {
sendDisappearedNotice := false
// If expired messages are on, and a notice has not been sent to this chat
// about it having disappeared messages at the conversation timestamp, send
// a notice indicating so.
if len(allMsgs) == 0 && conv.EphemeralExpiration != nil && *conv.EphemeralExpiration > 0 {
lastMessage := portal.bridge.DB.Message.GetLastInChat(portal.Key)
if lastMessage == nil || !conv.LastMessageTimestamp.Equal(lastMessage.Timestamp) {
sendDisappearedNotice = true
}
}
if !sendDisappearedNotice && len(allMsgs) == 0 {
user.log.Debugfln("Not backfilling %s: no bridgeable messages found", portal.Key.JID)
return
}
@ -172,6 +184,28 @@ func (user *User) backfillInChunks(req *database.Backfill, conv *database.Histor
}
}
if sendDisappearedNotice {
user.log.Debugfln("Sending notice to %s that there are disappeared messages ending at %v", portal.Key.JID, conv.LastMessageTimestamp)
resp, err := portal.sendMessage(portal.MainIntent(), event.EventMessage, &event.MessageEventContent{
MsgType: event.MsgNotice,
Body: portal.formatDisappearingMessageNotice(),
}, nil, conv.LastMessageTimestamp.UnixMilli())
if err != nil {
portal.log.Errorln("Error sending disappearing messages notice event")
return
}
msg := portal.bridge.DB.Message.New()
msg.Chat = portal.Key
msg.MXID = resp.EventID
msg.JID = types.MessageID(resp.EventID)
msg.Timestamp = conv.LastMessageTimestamp
msg.Sent = true
msg.Insert()
return
}
user.log.Infofln("Backfilling %d messages in %s, %d messages at a time (queue ID: %d)", len(allMsgs), portal.Key.JID, req.MaxBatchEvents, req.QueueID)
toBackfill := allMsgs[0:]
var insertionEventIds []id.EventID