fix: improve conversation and report stability

server/db/mysql/tenant_adapter.go

@@ -682,7 +682,17 @@ func (a *adapter) TenantTopicCreateP2P(id t.TenantID, one, two *t.Subscription)
 	topic := &t.Topic{TenantID: id, ObjHeader: t.ObjHeader{Id: one.Topic}}
 	topic.ObjHeader.MergeTimes(&one.ObjHeader)
 	topic.TouchedAt = one.GetTouchedAt()
-	if err = tenantTopicCreate(tx, topic); err != nil {
+	var existingTopicID int64
+	err = tx.Get(&existingTopicID, "SELECT id FROM im_topics WHERE name=? ORDER BY id ASC LIMIT 1", topic.Id)
+	if err != nil && err != sql.ErrNoRows {
+		return err
+	}
+	if err == sql.ErrNoRows {
+		if err = tenantTopicCreate(tx, topic); err != nil {
+			return err
+		}
+	} else if _, err = tx.ExecContext(ctx, "UPDATE im_topics SET updatedat=?,touchedat=?,state=? WHERE id=?",
+		topic.UpdatedAt, topic.TouchedAt, t.StateOK, existingTopicID); err != nil {
 		return err
 	}
 	return tx.Commit()
@@ -1757,6 +1767,9 @@ func (a *adapter) TenantMessageSave(id t.TenantID, msg *t.Message) error {
 	res, err := a.db.ExecContext(ctx,
 		"INSERT INTO im_messages(tenant_id,createdat,updatedat,seqid,topic,`from`,client_msg_id,version,head,content) VALUES(?,?,?,?,?,?,?,?,?,?)",
 		id, msg.CreatedAt, msg.UpdatedAt, msg.SeqId, msg.Topic, decodeUID(t.ParseUid(msg.From)), clientMsgID, messageVersion(msg.Version), msg.Head, common.ToJSON(msg.Content))
+	if isDupe(err) {
+		return t.ErrDuplicate
+	}
 	if err == nil {
 		lastID, _ := res.LastInsertId()
 		msg.SetUid(t.Uid(lastID))