try using locks for not spamming live message

main.go

@@ -38,6 +38,9 @@ var (
 	ownUserID32      = int32(0)
 	lastOwnTDMsg     time.Time
 	lastOwnTDMsgMux  sync.Mutex
+	lastChatTDMsg    map[uint64]time.Time
+	lastChatTDMsgMux map[uint64]sync.Mutex
+	lastChatMsgMux   sync.RWMutex
 	MQCWMsgQueue     chan ChatWarsMessage
 	MQTGCmdQueue     chan TGCommand
 )

td.go

@@ -69,6 +69,28 @@ func ListenTG(c *tdlib.Client) {
 
 			m.Date = time.Unix(int64(updateMsg.Message.Date), 0)
 
+			lastChatMsgMux.RLock()
+			if _, ok := lastChatTDMsg[m.ChatID64]; !ok {
+				lastChatMsgMux.RUnlock()
+				lastChatMsgMux.Lock()
+				if _, ok := lastChatTDMsg[m.ChatID64]; !ok {
+					lastChatTDMsg[m.ChatID64] = time.Now().Add(-1 * time.Second)
+					lastChatTDMsgMux[m.ChatID64] = new(sync.Mutex)
+				}
+				lastChatMsgMux.Unlock()
+			}
+			for {
+				lastChatTDMsgMux[m.ChatID64].Lock()
+				now := time.Now()
+				if lastChatTDMsg[m.ChatID64].Add(time.Second).Before(now) {
+					lastChatTDMsg[m.ChatID64] = now
+					lastChatTDMsgMux[m.ChatID64].Unlock()
+					break
+				}
+				lastChatTDMsgMux[m.ChatID64].Unlock()
+				time.Sleep(time.Until(now.Add(time.Second)))
+			}
+
 			MQCWMsgQueue <- m
 
 			fmt.Printf("[%d-%02d-%02d %02d:%02d:%02d-00:00]", t.Year(), t.Month(), t.Day(), t.Hour(), t.Minute(), t.Second())