Split transcription messages into smaller parts

main.go

@@ -95,7 +95,9 @@ func main() {
 				log.Println("Error transcribing voice message:", err)
 				sendMessage(botToken, update.Message.Chat.ID, "Failed to transcribe voice message", update.Message.MessageID)
 			} else {
-				sendMessage(botToken, update.Message.Chat.ID, transcript, update.Message.MessageID)
+				for _, transcriptPart := range splitText(transcript, 3000) {
+					sendMessage(botToken, update.Message.Chat.ID, transcriptPart, update.Message.MessageID)
+				}
 			}
 		} else {
 			sendMessage(botToken, update.Message.Chat.ID, "Please send a voice message", update.Message.MessageID)
@@ -190,3 +192,27 @@ func transcriptVoiceMessage(botToken, openaiApiKey, fileID string) (string, erro
 
 	return transcription.Text, err
 }
+
+func splitText(s string, chunkSize int) []string {
+	if chunkSize >= len(s) {
+		return []string{s}
+	}
+	var chunks []string
+	var b strings.Builder
+	b.Grow(chunkSize)
+	l := 0
+	for _, r := range s {
+		b.WriteRune(r)
+		l++
+		if l == chunkSize {
+			chunks = append(chunks, b.String())
+			l = 0
+			b.Reset()
+			b.Grow(chunkSize)
+		}
+	}
+	if l > 0 {
+		chunks = append(chunks, b.String())
+	}
+	return chunks
+}