Add mbti analysis

@@ -306,7 +306,6 @@ apiRouter.post('/question20', (req, res) => {
 apiRouter.post('/result', (req, res) => {
     var userId = req.body.userRequest.user.id;
     var mesg = req.body.userRequest.utterance;
-  console.log('[result:user message] ', mesg);
     var mbti = ''; 
     if (mesg == "네") {
         mbti = 'J';
@@ -315,13 +314,15 @@ apiRouter.post('/result', (req, res) => {
     }
     userDB[userId][3] += mbti;
     console.log(userDB[userId]);
+    analysis_mbti(userDB[userId]);
     const responseBody = {
         version: "2.0",
         template: {
             outputs: [
                 {
                     simpleText: {
-                      text: "당신의 MBTI는 : "+userDB[userId]
+                        text: "당신의 MBTI는 : "+userDB[userId][4]
+
                     }
                 }
             ],
@@ -336,6 +337,47 @@ apiRouter.post('/result', (req, res) => {
     res.status(200).send(responseBody);
 });
 
+function analysis_mbti(userdb) {
+    var e = count_mbti(userdb[0], 'E');
+    var i = 1-e; //-> 5
+    var n = count_mbti(userdb[1], 'N');
+    var s = 1-n; //-> 5
+    var f = count_mbti(userdb[2], 'F');
+    var t = 2-f; //-> 5
+    var j = count_mbti(userdb[3], 'J');
+    var p = 2-j; //-> 5
+    if (e > i) {
+        userdb[4] += 'E';
+    } else {
+        userdb[4] += 'I';
+    }
+    if (n > s) {
+        userdb[4] += 'N';
+    } else {
+        userdb[4] += 'S';
+    }
+    if (f > t) {
+        userdb[4] += 'F';
+    } else {
+        userdb[4] += 'T';
+    }
+    if (j > p) {
+        userdb[4] += 'J';
+    } else {
+        userdb[4] += 'P';
+    }
+}
+
+function count_mbti(item_list, mbti_ch) {
+    var result = 0;
+    for (var i=0; i<5; i++) {
+        if(item_list[i] == 'mbti_ch'){
+            result += 1;
+        }
+    }
+    return result;
+}
+
 app.listen((process.env.PORT || 3000), function() {
   console.log('Example skill server listening on port 3000!');
 });
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