js file to reply

+var express = require('express');
+const request = require('request');
+const TARGET_URL = 'https://api.line.me/v2/bot/message/reply'
+const TOKEN = 'vGuGN1jGbvuOH79MdjIY00fdDr+nDp0ZGDUqzidK5u4c1KiMJQ1UjrgekSiptVVK2sMymCx7U761J1M/8So3gCWWRR34zvPp9YZpUFn07/gPd7yKVFPgZO/kTaEwyjvBk9WI+OfZo1ch8YD8x6iUzgdB04t89/1O/w1cDnyilFU='
+const fs = require('fs');
+const path = require('path');
+const HTTPS = require('https');
+const domain = "www.osschatbot2020.tk"
+const sslport = 23023;
+
+const bodyParser = require('body-parser');
+var app = express();
+app.use(bodyParser.json());
+app.post('/hook', function (req, res) {
+
+    var eventObj = req.body.events[0];
+    var source = eventObj.source;
+    var message = eventObj.message;
+
+    // request log
+    console.log('======================', new Date() ,'======================');
+    console.log('[request]', req.body);
+    console.log('[request source] ', eventObj.source);
+    console.log('[request message]', eventObj.message);
+
+    request.post(
+        {
+            url: TARGET_URL,
+            headers: {
+                'Authorization': `Bearer ${TOKEN}`
+            },
+            json: {
+                "replyToken":eventObj.replyToken,
+                "messages":[
+                    {
+                        "type":"text",
+                        "text":"Hello, user"
+                    },
+                    {
+                        "type":"text",
+                        "text":"May I help you?"
+                    }
+                ]
+            }
+        },(error, response, body) => {
+            console.log(body)
+        });
+    
+
+    res.sendStatus(200);
+});
+
+try {
+    const option = {
+      ca: fs.readFileSync('/etc/letsencrypt/live/' + domain +'/fullchain.pem'),
+      key: fs.readFileSync(path.resolve(process.cwd(), '/etc/letsencrypt/live/' + domain +'/privkey.pem'), 'utf8').toString(),
+      cert: fs.readFileSync(path.resolve(process.cwd(), '/etc/letsencrypt/live/' + domain +'/cert.pem'), 'utf8').toString(),
+    };
+  
+    HTTPS.createServer(option, app).listen(sslport, () => {
+      console.log(`[HTTPS] Server is started on port ${sslport}`);
+    });
+  } catch (error) {
+    console.log('[HTTPS] HTTPS 오류가 발생하였습니다. HTTPS 서버는 실행되지 않습니다.');
+    console.log(error);
+  }
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