checkbox기능 추가

@@ -57,21 +57,63 @@ app.post('/food/recommendation', function(req, res) {
       var price = req.body.price;
       var shape = req.body.shape;
       var kinds = req.body.kinds;
-      var list = {
-        food: []
-      };
 
-      function add(users, price, shape, kinds, list, callback) {
+      if (!Array.isArray(shape) && shape) {
+        var shape = [];
+        shape.push(req.body.shape);
+      }
+      if (!Array.isArray(kinds) && kinds) {
+        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();
+
+      function add(users, price, shape, kinds, callback) {
         for (var foods in users) {
-          if ((!price || users[foods]['price'] == price) && (!shape || users[foods]['shape'] == shape) && (!kinds || users[foods]['kinds'] == kinds)) {
-            list.food.push(foods);
+          if (shape) {
+            for (var i = 0; i < shape.length; i++) {
+              if (users[foods]['shape'] == shape[i]) {
+                set1.add(foods);
+              }
+            }
+          } else {
+            set1.add(foods);
+          }
+          if (kinds) {
+            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)+5000 && users[foods]['price'] >= Number(price)-5000)) {
+            set3.add(foods);
+            console.log(users[foods]['price']);
           }
-          // $('<li>').text(foods).appendTo('#users');
         }
-        callback(list);
+        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, list, function(list) {
+      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);
@@ -97,7 +139,7 @@ app.post('/food/recommendation', function(req, res) {
             }); //readFile closed
           }
         }); //writeFile closed
-      });//add closed
+      }); //add closed
 
     }
   }); //readFile closed