Separate translation code into a function

@@ -31,22 +31,17 @@ bot.onText(/\/echo (.+)/, (msg, match) => {
   bot.sendMessage(chatId, resp);
 });
 
-// [Any normal message which is not a command (not starting with '/')]
-bot.onText(/(?!\/)(.+)/, (msg, match) => {
-  const chatId = msg.chat.id;
-  const chatType = msg.chat.type;
-  const received_msg = match[1];
-
-  // Ignore if we are not on a private chat,
-  // since direct translation is to be used only on private chats.
-  if (chatType != 'private') {
-    return;
-  }
-
+/**
+ * Translate given message and send it to the specified chatroom.
+ *
+ * @param {*} message Message to translate
+ * @param {*} chatId  Id of the chatroom to send translated message to
+ */
+function translate(message, chatId) {
   // Language detection options
   var lang_detect_options = {
     url: languagedetect_api_url,
-    form: { 'query': received_msg },
+    form: { 'query': message },
     headers: {
       'X-Naver-Client-Id': papago_client_id,
       'X-Naver-Client-Secret': papago_client_secret
@@ -77,7 +72,7 @@ bot.onText(/(?!\/)(.+)/, (msg, match) => {
           form: {
             'source': source, // Before translation
             'target': target, // After translation
-            'text': received_msg // Message to translate
+            'text': message // Message to translate
           },
           headers: {
             'X-Naver-Client-Id': papago_client_id,
@@ -93,7 +88,7 @@ bot.onText(/(?!\/)(.+)/, (msg, match) => {
             result.text = objBody.message.result.translatedText;
 
             // Send translated message
-            console.log('Before: ' + received_msg);
+            console.log('Before: ' + message);
             console.log('After: ' + result.text);
             bot.sendMessage(chatId, result.text);
           }
@@ -106,4 +101,19 @@ bot.onText(/(?!\/)(.+)/, (msg, match) => {
       }
     }
   });
+}
+
+// [Any normal message which is not a command (not starting with '/')]
+bot.onText(/(?!\/)(.+)/, (msg, match) => {
+  const chatId = msg.chat.id;
+  const chatType = msg.chat.type;
+  const received_msg = match[1];
+
+  // Ignore if we are not on a private chat,
+  // since direct translation is to be used only on private chats.
+  if (chatType != 'private') {
+    return;
+  }
+
+  translate(received_msg, chatId);
 });