add language detector

@@ -3,6 +3,7 @@ const request = require('request');
 const TARGET_URL = 'https://api.line.me/v2/bot/message/reply'
 const TOKEN = 'm79m/yBsTVzZeC9pYqSLzEL00Hp0HqsVE/0ZsZxW2HNAwdnb9TwDgBcOyCn3/aJASXsE8ekpyGg4Gts/4r8LO72OTZec9Np5Mh9g1vrgyDj5theWv4g2miE5F1Cqax4X3waj1aIzDGHcUZdHD6fQvAdB04t89/1O/w1cDnyilFU='
 const PAPAGO_URL = 'https://openapi.naver.com/v1/papago/n2mt'
+const PAPAGO_D_URL = 'https://openapi.naver.com/v1/papago/detectLangs'
 const PAPAGO_ID = 'tA41WEd_nbzy0nZcUQks'
 const PAPAGO_SECRET = '6DHwov9gg2'
 // const fs = require('fs');
@@ -14,7 +15,9 @@ const bodyParser = require('body-parser');
 var app = express();
 
 var ln = 'en'; //default value en
+var tempc = 'ko';
 var lnDetec = new Array();
+var userinfo = new Array();
 lnDetec[0] =
 {
     "InLn" : '영어',
@@ -31,6 +34,14 @@ lnDetec[2] =
     "PaLn" : 'fr'
 }
 
+userinfo[0] =
+{
+    userId : 'userId',
+    userInLn : 'userInLn',
+    userPaLn : 'userPaLn'
+}
+
+
 app.use(bodyParser.json());
 app.post('/hook', function (req, res) {
 
@@ -44,7 +55,7 @@ app.post('/hook', function (req, res) {
     // console.log('======================', new Date() ,'======================');
     // console.log('[request]', req.body);
     // console.log('[request source] ', eventObj.source);
-    console.log('userId? ', eventObj.source.userId);
+    console.log('userId: ', eventObj.source.userId);
     // console.log('[request message]', eventObj.message);
     // console.log('my meesage: ', message.text);
     // console.log('my ip check: ', req.ip);
@@ -57,13 +68,16 @@ app.post('/hook', function (req, res) {
             LnCh = 0;
         }
     }
-    if(LnCh) // if there is no attempt to change language then call trans() operator
-        trans(eventObj.replyToken, eventObj.message.text, ln);
 
+    if(LnCh) // if there is no attempt to change language then call operators
+    {
+        detector(message.text);
+        trans(eventObj.replyToken, eventObj.message.text);
+    }
     res.sendStatus(200);
 });
 
-function trans(replyToken, message, ln) {
+function trans(replyToken, message) {
 
     request.post(
         {
@@ -73,12 +87,12 @@ function trans(replyToken, message, ln) {
                 'X-Naver-Client-Id': `${PAPAGO_ID}`,
                 'X-Naver-Client-Secret': `${PAPAGO_SECRET}`
             },
-            body: 'source=ko&target='+ln+'&text=' + message,
-            //body: 'source=ko&target=en&text=' + message,
+            //body: 'source=ko&target='+ln+'&text=' + message,
+            body: 'source='+tempc+'&target='+ln+'&text='+message,
             json:true
         },(error, response, body) => {
             if(!error && response.statusCode == 200) {
-                console.log(body.message);
+                console.log('[객체 정보 확인]',body.message);
                 var transMessage = body.message.result.translatedText;
                 request.post(
                     {
@@ -103,6 +117,31 @@ function trans(replyToken, message, ln) {
 
 }
 
+function detector(message)
+{
+    request.post
+    (
+        {
+            url: PAPAGO_D_URL,
+            headers:
+            {
+                'Content-Type': 'application/x-www-form-urlencoded; charset=UTF-8',
+                'X-Naver-Client-Id': `${PAPAGO_ID}`,
+                'X-Naver-Client-Secret': `${PAPAGO_SECRET}`
+            },
+            body: 'query='+message,
+            json:true
+        },(error, response, body) => 
+        {
+            if(!error && response.statusCode == 200)
+            {
+                console.log('[넘어온 메시지]', message);
+                console.log('[객체 정보 확인]',body);
+                tempc = body.langCode;
+            }
+        }
+    )
+}
 // try {
 //     const option = {
 //       ca: fs.readFileSync('/etc/letsencrypt/live/' + domain +'/fullchain.pem'),