fixed message.js, 번역기능 구현

 var express = require('express');
-var router = express.Router();
-var bodyparser = require('body-parser');
 var request = require('request');
+var app = express.Router();
 
+// Naver Auth Key // to do)) get a new Auth key
 var client_id = 'is216aNtQ6QLNkWW03bc';
 var client_secret = 'Ot0BMdWXOJ';
 
-router.use(bodyparser.urlencoded({extended: true}));
-router.use(bodyparser.json());
+// Naver API URL
+var api_url = 'https://openapi.naver.com/v1/language/translate';
 
-router.post('/', function(req, res, next) {
-  const _obj = {
+//what kind of task to do
+var translate = false;
+var dictionary = false;
+var option = false;
+// Kakao Message API
+app.post('/', function(req, res) {
+  var _obj = {
     user_key: req.body.user_key,
     type: req.body.type,
     content: req.body.content
   };
-//응답
-  var choice = _obj.content;
-  switch (choice) {
-    case '설정':
+
+  if(_obj.content == '설정'){
+    option = true;
+    translate = false;
+    dictionary = false;
+    res.json({
+      "message": {
+        "text": "언어를 설정합니다"
+      },
+      "keyboard": {
+        "type": "buttons",
+        "buttons":["한-영", "영-한"]
+      },
+    });
+  }else if (_obj.content == '번역'){
+      translate = true;
+      option = false;
+      dictionary = false;
       res.json({
         "message": {
-          "text": "언어를 설정합니다"
-        }, "keyboard":{
-          "type": "buttons",
-          "buttons":["한-영", "영-한"]
+  		  "text": "입력한 텍스트를 번역해드리겠습니다. 자 시작!"
+        },
+        "keyboard": {
+          "type": "text"
         }
       });
-
-
-      break;
-    case '번역':
+    }else if (_obj.content == '사전'){
+      dictionary = true;
+      option = false;
+      translate = false;
       res.json({
-        "message": {
-          "text": "번역할 문장을 적어주세요"
-        }, "keyboard":{
+        "message":{
+          "text": "백과사전 검색을 시작합니다. 키워드를 입력해주세요."
+        },
+        "keyboard": {
           "type": "text"
         }
       });
+    }
+    else if (translate)
+    {
+      // Naver Papago Translate
+      var options = {
+        url: api_url,
+        // (source : 번역할 대상), (target: 번역후 언어), 카톡에서 받는 메시지(text)
+        form: {'source':'ko', 'target':'en', 'text':req.body.content},
+        headers: {'X-Naver-Client-Id': client_id, 'X-Naver-Client-Secret': client_secret}
+      };
+      // Naver Post API
+      request.post(options, function(error, response, body){
+        // Translate API Sucess
+        if(!error && response.statusCode == 200){
+          // JSON
+          var objBody = JSON.parse(response.body);
+          // Message 잘 찍히는지 확인
+          console.log(objBody.message.result.translatedText);
 
-      var query = req.body.content;
-      app.get('/translate', function (req, res) {
-        var api_url = 'https://openapi.naver.com/v1/language/translate';
-        var options = {
-          url: api_url,
-          form: {'source':'ko', 'target':'en', 'text':query},
-          headers: {'X-Naver-Client-Id':client_id, 'X-Naver-Client-Secret': client_secret}
-        };
-        request.post(options, function (error, response, body) {
-          if (!error && response.statusCode == 200) {
-            var translated = JSON.parse(response.body);
-
-            let message = {
-              "message": {
-                "text": translated.message.result.translatedText
-              },
-            };
-            res.set({
-              'content-type': 'applcation/json'
-            }).send(JSON.stringify(message));
+          // Kakao Message API
+          let massage = {
+            "message": {
+              // Naver API Translate 결과를 Kakao Message
+              "text": objBody.message.result.translatedText
+            }      
+          };
 
-          } else {
-            res.status(response.statusCode).end();
-            console.log('error = ' + response.statusCode);
-          }
+          // Kakao Message API 전송
+          res.set({
+            'content-type': 'application/json'
+          }).send(JSON.stringify(massage));
+        }
+        else{
+          // Naver Message Error 발생
+          res.status(response.statusCode).end();
+          console.log('error = ' + response.statusCode);
 
-        });
-      });
+          let massage = {
+            "message": {
+              "text": response.statusCode
+            },
+          };
 
-      break;
-    case '사전':
-      res.json({
-        "message": {
-          "text": "검색할 단어를 적어주세요"
+          // Kakao에 Error Message
+          res.set({
+            'content-type': 'application/json'
+          }).send(JSON.stringify(massage));
         }
       });
+    }
+    else if (dictionary)
+    {
 
-      break;
-     }
-<<<<<<< HEAD
-=======
- res.json(msg);
->>>>>>> ae1136a7f2944d983ded52428ee21aad50aed1d9
+    }
 });
 
-module.exports = router;
+
+function choiceLanguage(str) {
+    if (str == "영어")
+        return "en";
+    else if (str == "한국어") {
+        console.log(str);
+        return "ko";
+    }
+    else if (str == "일본어")
+        return "ja";
+    else if (str == "중국어(간체)")
+        return "zh-CN";
+    else
+        return "ko";
+}
+module.exports = app;