bugfix

main.go

@@ -22,26 +22,28 @@ type Message struct {
 
 const linux = "python3"
 
-func extractMessage(message string) (string, error) {
+func streamResponse(w http.ResponseWriter, messages <-chan string) {
-	var temp map[string]interface{}
+	w.Header().Set("Content-Type", "text/plain; charset=utf-8")
-	err := json.Unmarshal([]byte(message), &temp)
+	w.Header().Set("Cache-Control", "no-cache")
-	if err != nil {
+	w.Header().Set("Connection", "keep-alive")
-		return "", fmt.Errorf("failed to unmarshal message: %v", err)
+
+	flusher, ok := w.(http.Flusher)
+	if !ok {
+		http.Error(w, "Streaming unsupported!", http.StatusInternalServerError)
+		return
 	}
 
-	response, exists := temp["response"]
+	for msg := range messages {
-	if !exists {
+		fmt.Fprintf(w, "%s\n", msg)
-		return "", fmt.Errorf("no 'response' field found in the message")
+		flusher.Flush()
 	}
-
-	return fmt.Sprintf("%v", response), nil
 }
 
 func downloadPackages(w http.ResponseWriter, fromLanguage, toLanguage string) {
 	messages := make(chan string)
 	defer close(messages)
 
-	go extractMessage(messages)
+	go streamResponse(w, messages)
 
 	cmd := exec.Command(linux, "translator/download.py", fromLanguage, toLanguage)
 	output, err := cmd.StdoutPipe()
@@ -86,7 +88,7 @@ func executeTranslator(w http.ResponseWriter, message, fromLanguage, toLanguage
 	messages := make(chan string)
 	defer close(messages)
 
-	go extractMessage(messages)
+	go streamResponse(w, messages)
 
 	cmd := exec.Command(linux, "translator/translate.py", message, fromLanguage, toLanguage)
 	output, err := cmd.StdoutPipe()