X-Git-Url: http://git.giacomolli.uk/onechat/blobdiff_plain/0821d23c64f4ffc856760e4914fa39ba2e3260e4..c9183f90d757006e7221ecd0d4dc0db2a25f87e0:/memory.go?ds=sidebyside

diff --git a/memory.go b/memory.go
index cb55cab..c3e9f45 100644
--- a/memory.go
+++ b/memory.go
@@ -272,15 +272,24 @@ func (m *Memory) Append(kind, text string) (Message, error) {
 }
 
 // addMessage builds the leaf of message when it needs no model call, or else
-// adds the leaf to the queue. Then it appends the leaf to the views.
+// adds the leaf to the queue. Then it appends the leaf to the views. A crash can
+// stop an append after the leaf build and before the view save, so a leaf that
+// is built already stays as it is, and restoreQueue settles its parent.
 func (m *Memory) addMessage(message Message) error {
+	built, err := m.tree.Built(0, message.ID)
+	if err != nil {
+		return err
+	}
+
 	leaf, free := freeLeaf(message)
-	if free {
-		err := m.build(leaf)
+	switch {
+	case built:
+	case free:
+		err = m.build(leaf)
 		if err != nil {
 			return err
 		}
-	} else {
+	default:
 		m.queue.AddLeaf(message.ID)
 	}