페이스북 챗봇 수정

음식메뉴를 추천해주는 기능 추가

@@ -3,13 +3,26 @@ const express = require('express');
 const bodyParser = require('body-parser');
 const request = require('request');
 const app = express();
+var fs = require("fs");
+
+app.use(bodyParser.json());
+app.use(bodyParser.text());
+app.use(bodyParser.urlencoded({
+  extended: false
+})); //post에서bodyparser로 받기 위함
+
+var price;
+var shape = [];
+var kinds = [];
 
 // 3번 단계에서 얻은 토큰을 넣어줍니다 . 개인 깃에 올릴 경우 이 부분은 절대 커밋하지 마세요.
 var PAGE_ACCESS_TOKEN = 'EAAIZBdEhUzlcBAAy7a21fSEuW76k1ABpld4ncE0XcrRv902dy56lZAZCAZANmKifUVah2H5j94xZBpmWAVGR9bhVlouzYyykVJ0XD447ju4Wco2G08jroUdF9hU1FZCILBSZAJxmgkoTYbCQ2FQ8xZByvsDGZAPVPvtBHL51ZCTfOiEgZDZD';
 
 app.set('port', (process.env.PORT || 5000));
 
-app.use(bodyParser.urlencoded({ extended: false }));
+app.use(bodyParser.urlencoded({
+  extended: false
+}));
 app.use(bodyParser.json());
 
 app.get('/', (req, res) => {
@@ -43,7 +56,38 @@ app.post("/webhook", (req, res) => {
         if (messagingEvent.optin) {
           receivedAuthentication(messagingEvent);
         } else if (messagingEvent.message) {
+          var quest = messagingEvent.message.text;
+          var price = quest;
+          if (((quest.search('음식') != -1) || (quest.search('추천') != -1)) || ((quest.search('뭐') != -1) && (quest.search('먹') != -1))) {
+            receivedMessage_price(messagingEvent);
+          } else if (price == Number(price)) {
+            price = Number(price);
+            sendTextMessage(messagingEvent.sender.id, '원하시는 음식 카테고리가 있나요?');
+          } else if ((quest.search('한식') != -1) || (quest.search('중식') != -1) || (quest.search('일식') != -1) || (quest.search('양식') != -1)) {
+            if ((quest.search('한식') != -1))
+              kinds.push('한식');
+            if ((quest.search('중식') != -1))
+              kinds.push('중식');
+            if (quest.search('일식') != -1)
+              kinds.push('일식');
+            if ((quest.search('양식') != -1))
+              kinds.push('양식');
+            sendTextMessage(messagingEvent.sender.id, '원하시는 음식 형태가 있나요?');
+          } else if ((quest.search('밥') != -1) || (quest.search('면') != -1) || (quest.search('고기') != -1) || (quest.search('기타') != -1)) {
+            if ((quest.search('밥') != -1))
+              shape.push('밥');
+            if ((quest.search('면') != -1))
+              shape.push('면');
+            if (quest.search('고기') != -1)
+              shape.push('고기');
+            if ((quest.search('기타') != -1))
+              shape.push('기타');
+            receivedMessage_recommend(messagingEvent);
+          } else if ((quest.search('먹을까') != -1) || (quest.search('말까') != -1)) {
+            receivedMessage_select(messagingEvent);
+          } else {
             receivedMessage(messagingEvent);
+          }
         } else if (messagingEvent.postback) {
           receivedPostback(messagingEvent);
         } else {
@@ -51,17 +95,109 @@ app.post("/webhook", (req, res) => {
         }
       });
     });
-
     res.sendStatus(200);
   }
 });
 
 // 메세지 받고 내보내기
+function receivedMessage_recommend(event) {
+  var senderId = event.sender.id;
+  var content = event.message.text;
+  var bot_message = content;
+  fs.readFile('data/food.json', 'utf8', function(err, food_data) {
+    if (err) {
+      console.log((err));
+      res.status(500).send('Internal Server Error');
+    } else {
+      var users = JSON.parse(food_data);
+      var set1 = new Set();
+      var set2 = new Set();
+      var set3 = new Set();
+
+      function add(users, price, shape, kinds, callback) {
+        for (var foods in users) {
+          if (shape.length != 0) {
+            for (var i = 0; i < shape.length; i++) {
+              if (users[foods]['shape'] == shape[i]) {
+                set1.add(foods);
+              }
+            }
+          } else {
+            set1.add(foods);
+          }
+          if (kinds.length != 0) {
+            for (var j = 0; j < kinds.length; j++) {
+              if (users[foods]['kinds'] == kinds[j]) {
+                set2.add(foods);
+              }
+            }
+          } else {
+            set2.add(foods);
+          }
+          if (!price || (price && users[foods]['price'] <= Number(price) + 3000 && users[foods]['price'] >= Number(price) - 3000)) {
+            set3.add(foods);
+          }
+        }
+        callback(set1, set2, set3);
+      }
+
+      add(users, price, shape, kinds, function(set1, set2, set3) {
+        let difference1 = new Set([...set1].filter(i => set2.has(i)));
+        let difference2 = new Set([...difference1].filter(i => set3.has(i)));
+        var food = [...difference2];
+        var length = food.length;
+        console.log('food 목록: ' + food);
+        console.log('food 갯수: ' + length);
+        var rand = Math.floor(Math.random() * length);
+        var food_value = food[rand];
+        console.log('랜덤 food 번호: ' + rand);
+        price = '';
+        shape = [];
+        kinds = [];
+        sendTextMessage(senderId, '제가 추천해드리는 음식이에욤:>');
+        sendTextMessage(senderId, food_value);
+        // sendTextMessage(senderId, /data/images/food_value.png);
+      }); //add closed
+    }
+  }); //readFile closed
+
+}
+
 function receivedMessage(event) {
   var senderId = event.sender.id;
   var content = event.message.text;
   var bot_message = content;
-    sendTextMessage(senderId, bot_message);
+  var happpy = ['오늘은 무엇을 드실건가요?:)', '뿌에에ㅔ엥', '헣', '저한테 왜그러시는거죠?', '뭐지', '그러쿤요!', '훌쩍', '쒸익쒸익', '뭐하시는거죠?', '눈물', '세상에', '이게무슨일이람', 'ㅋㅋㅋㅋㅋㅋㅋㅋ', '무야', '아니이ㅣㅣ', '네에ㅔㅔ', '찡긋', '(당근 흔드는 중)', '도와주세요', '살려줘'];
+  var rand = Math.floor(Math.random() * happpy.length);
+  sendTextMessage(senderId, happpy[rand]);
+}
+
+function receivedMessage_select(event) {
+  var senderId = event.sender.id;
+  var content = event.message.text;
+  var answer = ['먹어', '먹지마'];
+  var rand = Math.floor(Math.random() * answer.length);
+  sendTextMessage(senderId, answer[rand]);
+}
+
+function receivedMessage_price(event) {
+  var senderId = event.sender.id;
+  var content = event.message.text;
+  var bot_message = content;
+  var recom = ['제가 추천해드릴까욤??', '에휴 결정장애시구먼요. 제가 추천해드릴게요', '밥먹어요!! 추천해줄게요', '뭐드시고 싶어요?? 추천해줄게욤'];
+  var rand = Math.floor(Math.random() * recom.length);
+  sendTextMessage(senderId, recom[rand]);
+  sendTextMessage(senderId, "가격대를 입력하시겠어요? :)");
+}
+
+function receivedMessage_map(event) {
+  var senderId = event.sender.id;
+  var content = event.message.text;
+  var bot_message = content;
+  var recom = ['제가 추천해드릴까욤??', '에휴 결정장애시구먼요. 제가 추천해드릴게요', '밥먹어요!! 추천해줄게요', '뭐드시고 싶어요?? 추천해줄게욤'];
+  var rand = Math.floor(Math.random() * recom.length);
+  sendTextMessage(senderId, recom[rand]);
+  sendTextMessage(senderId, "가격대를 입력하시겠어요? :)");
 }
 
 function receivedPostback(event) {
@@ -81,11 +217,17 @@ function receivedPostback(event) {
 function sendTextMessage(recipientId, message) {
   request({
     url: 'https://graph.facebook.com/v2.6/me/messages',
-        qs: { access_token: PAGE_ACCESS_TOKEN },
+    qs: {
+      access_token: PAGE_ACCESS_TOKEN
+    },
     method: 'POST',
     json: {
-            recipient: { id: recipientId },
-            message: { text: message }
+      recipient: {
+        id: recipientId
+      },
+      message: {
+        text: message
+      }
     }
   }, (error, response, body) => {
     if (error) {