쇼핑기능 접목중on process

 var express = require('express');
 
-// ----------crawling modules---------------
-var puppeteer = require('puppeteer');
-var gmarket = require('./crawling/gmarket');
-var coupang = require('./crawling/coupang');
-var auction = require('./crawling/auction');
-//------------------------------------------
-
 const request = require('request');
+
+//--------------- Line messanger modules -------------------
 const TARGET_URL = 'https://api.line.me/v2/bot/message/reply'
 const TOKEN = 'LFi+FvOOFOydz0EKN22WRnQyiilnEiyxe2HVV1WrI54Jnght6+Gga07m7pxqSQltBJG2AV2lYnYOAk4TqxzZFKW9R36CJcQs+NaNEiNKJtgBfT/t3tEta/J6GtXxGz/DqdHnfZqSSfLFpXzun/ITTwdB04t89/1O/w1cDnyilFU='
+//----------------------------------------------------------
 
-//-----------------Translating moudules----------------------
+//--------------- Translating moudules ----------------------
 const PAPAGO_URL = 'https://openapi.naver.com/v1/papago/n2mt'
 const PAPAGO_ID = 'r_kuebFKCqBeL3SI_dFb'
 const PAPAGO_SECRET = 'Wdz2tudrzB'
@@ -19,6 +15,15 @@ var trans = require('./trans/trans')
 var trans_counter = 0;
 //-----------------------------------------------------------
 
+// ---------- Shopping modules -------------
+var puppeteer = require('puppeteer');
+var gmarket = require('./crawling/gmarket');
+var coupang = require('./crawling/coupang');
+var auction = require('./crawling/auction');
+var shopping = 0;           // in shopping menu identifier    0 = idle, 1 = shop selecting, 2 = select complete
+var shop_select = undefined     // shopping-site identifier
+//------------------------------------------
+
 const fs = require('fs');
 const path = require('path');
 const HTTPS = require('https');
@@ -30,10 +35,11 @@ const bodyParser = require('body-parser');
 
 var app = express();
 
-//------middlewares------------------------------
+//=============== middlewares ================
 app.use(bodyParser.json());
 
-//--------------------Utility Selector----------------------------------------------------------------
+
+//============== Utility Selector =========================================
 app.post('/hook', function (req, res) {
 
     //-------- request values ---------
@@ -49,7 +55,16 @@ app.post('/hook', function (req, res) {
     console.log('[request message]', eventObj.message);
     //----------------------------------------------------------------------------
 
-    //--------------------language identification & translation-------------------
+    //--------------- Cancel ----------------------------------------------
+    if(message.text.includes('/취소')){
+        replying(eventObj.replyToken, '진행중인 기능 및 메뉴를 종료합니다.');
+        shopping = 0;
+        shop_select = undefined
+        trans_counter = 0;
+    }
+    //---------------------------------------------------------------------
+
+    //----------------------- Translation which includes language-selector -----------------------------------------------
     if(eventObj.message.text.includes('/번역')){
         console.log('번역캐치: ', eventObj.message.text);
         trans_counter = trans.trans_lng_selector(eventObj.message.text);     // after this trans_trigger = 1
@@ -57,14 +72,53 @@ app.post('/hook', function (req, res) {
     else if(trans_counter==1){
         trans_counter = trans.translating(eventObj.replyToken, eventObj.message.text);  // after this trans_trigger = 0
     }
+    //--------------------------------------------------------------------------------------------------------------------
 
-    
+    //---------------------- linking Shoppingcart crawler ----------------------------------------------------------------
+    if(message.text == '/쇼핑' ){
+        replying(eventObj.replyToken, '쇼핑을 선택하셨습니다.\n원하시는 쇼핑몰 사이트를 선택하세요.\n현재 제공되는 사이트는 \n\n/g마켓\n/옥션\n/쿠팡\n\n입니다.\n/취소 로 해당 메뉴에서 퇴장이 가능합니다.');
+        shopping = 1;   // 다음 메세지에 선택하지 못할 경우 0으로 되돌릴 필요가있음
+    }
+    if(shopping == 1){
+        switch(message.text){
+            case '/g마켓': break;
+            case '/옥션':  break;
+            case '/쿠팡':  break;
+            default: shopping == 0;
+        }
+    }
+    //--------------------------------------------------------------------------------------------------------------------
     
 
     res.sendStatus(200);
 });
 
 
+//================== Just replying specific messages needed ===================================
+function replying(replyToken, sp_message){  // sp_message is message(string) that depends on the situation that user selects
+    request.post(
+        {
+            url: TARGET_URL,
+            headers: {
+                'Authorization': `Bearer ${TOKEN}`
+            },
+            json: {
+                "replyToken":replyToken,
+                "messages":[
+                    {
+                        "type":"text",
+                        "text":sp_message   // replying message
+                    }
+                ]
+            }
+        },(error, response, body) => {
+            console.log(body)
+            trans_trigger=0;
+            return trans_trigger;
+        });
+}
+
+//==================== Creating Server : Port = val sslport ===============================
 try {
     const option = {
       ca: fs.readFileSync('/etc/letsencrypt/live/' + domain +'/fullchain.pem'),