delete preview result files

 const express = require('express');
 const fs = require('fs');
 const ffmpeg = require('ffmpeg');
-const request = require('request')
-
+const request = require('request');
+const path = require('path');
 const router = express.Router();
 
 router.post('/videoResult', function (req, res) {
-
+    delete_prevResult_image('./fire');
+    delete_prevResult_image('./unknown');
     try {
         let preview = req.body[0].preview;
 
@@ -95,4 +96,16 @@ function save_Result_image(file, type, index){
     });
 }
 
+function delete_prevResult_image(filePath){
+    fs.readdir(filePath, (err, files) => {
+        if (err) throw err;
+      
+        for (const file of files) {
+          fs.unlink(path.join(filePath, file), err => {
+            if (err) throw err;
+          });
+        }
+      });
+}
+
 module.exports = router;
\ No newline at end of file

@@ -12,5 +12,5 @@ app.use(bodyParser.urlencoded({limit: '100mb', extended: true}));
 app.use(bodyParser());
 app.use('/api', api);
 
-const port = 3004;
+const port = 3005;
 app.listen(port, () => console.log(`노드서버 시작 : ${port}`));

@@ -37,7 +37,7 @@ class Subject extends PureComponent {
     e.preventDefault();
     console.log("save image");
     // post request
-    fetch('http://localhost:3004/api/saveImage',{
+    fetch('http://localhost:3005/api/saveImage',{
       method: 'POST',
       mode: 'cors',
       cache: 'no-cache',
@@ -51,8 +51,6 @@ class Subject extends PureComponent {
     })
     .then(res=>res.json())
     .then(data=>this.setState({videoAnalysisResult:data}))
-    
-    console.log(this.state.videoAnalysisResult);
   }
 
   render() {

@@ -47,7 +47,7 @@ class Dashboard extends React.Component {
     e.preventDefault();
     console.log("upload video");
     // post request
-    fetch('http://localhost:3004/api/videoResult',{
+    fetch('http://localhost:3005/api/videoResult',{
       method: 'POST',
       mode: 'cors',
       cache: 'no-cache',
@@ -61,8 +61,6 @@ class Dashboard extends React.Component {
     })
     .then(res=>res.json())
     .then(data=>this.setState({videoAnalysisResult:data}))
-    
-    console.log(this.state.videoAnalysisResult);
   }
 
   static propTypes = {
@@ -76,7 +74,6 @@ class Dashboard extends React.Component {
   }
 
   render() {
-    console.log(this.state.videoAnalysisResult);
     return (
       <div>
         <h1 className="page-title">Video Analysis <small><small>Performance</small></small></h1>