선별된 목록을 배열에 저장

기존의 temp.json파일에 음식 목록을 선별하여 저장하던 방식에서
선별된 음식 목록을 배열에 저장하는 방식으로 변환
(write함수와 read함수 제거)

@@ -66,9 +66,6 @@ app.post('/food/recommendation', function(req, res) {
         var kinds = [];
         kinds.push(req.body.kinds);
       }
-      // var len_shape=shape.length;
-      // var len_kinds=kinds.length;
-
       var set1 = new Set();
       var set2 = new Set();
       var set3 = new Set();
@@ -93,54 +90,29 @@ app.post('/food/recommendation', function(req, res) {
           } else {
             set2.add(foods);
           }
-          if (!price || (price&&users[foods]['price'] <= Number(price)+5000 && users[foods]['price'] >= Number(price)-5000)) {
+          if (!price || (price && users[foods]['price'] <= Number(price) + 5000 && users[foods]['price'] >= Number(price) - 5000)) {
             set3.add(foods);
-            console.log(users[foods]['price']);
           }
         }
-        console.log(shape);
-        console.log(kinds);
-        console.log(set1);
-        console.log(set2);
-        console.log(set3);
-        // console.log('shapeleng:' + shape.length);
-        // console.log('kinds leng:' + kinds.length);
         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 list = {
-          food: [...difference2]
-        };
-        fs.writeFile('data/temp.json', JSON.stringify(list), "utf8", function(err) {
-          if (err) {
-            console.log(err);
-            res.status(500).send('Internal Server Error');
-          } else {
-
-            fs.readFile('data/temp.json', 'utf8', function(err, data) {
-              if (err) {
-                console.log((err));
-                res.status(500).send('Internal Server Error');
-              } else {
-                var food = JSON.parse(data)['food'];
-                var length = food.length;
-                var rand = Math.floor(Math.random() * length); //(Math.random() * (max - min)) + min
-                var food_value = food[rand];
-                console.log(rand);
-                res.render('print.ejs', {
-                  title: 'Recommendation',
-                  description: 'We recommend this...',
-                  randvalue: food_value
-                }); //rander closed
-              }
-            }); //readFile closed
-          }
-        }); //writeFile closed
+        var food = [...difference2];
+        var length = food.length;
+        console.log('food 목록: '+food);
+        console.log('food 갯수: '+length);
+        var rand = Math.floor(Math.random() * length); //(Math.random() * (max - min)) + min
+        var food_value = food[rand];
+        console.log('랜덤 food 번호: '+rand);
+        res.render('print.ejs', {
+          title: 'Recommendation',
+          description: 'We recommend this...',
+          randvalue: food_value
+        }); //rander closed
       }); //add closed
-
     }
   }); //readFile closed
 }); //post closed