Update server.js

server.js

@@ -1,8 +1,39 @@
-var http = require('http');
+var express = require('express');
+var app = express();
 
-http.createServer(function (req, res) {
-
-    res.writeHead(200, { 'Content-Type': 'text/html' });
-    res.end('Hello, world!');
+'use strict';
+// node v8.11.3
+const Buffer = require('buffer').Buffer;
+const path = require('path');
+const fs = require('fs');
+
+/**
+ * @param  {string} filename
+ */
+
+/**
+ * @param  {string} base64str
+ * @param  {string} filename
+ */
+function decode_base64(base64str, filename) {
+  let buf = Buffer.from(base64str, 'base64');
+
+  fs.writeFile(path.join(__dirname, '/public/', filename), buf, function(error) {
+    if (error) {
+      throw error;
+    } else {
+      console.log('File created from base64 string!');
+      return true;
+    }
+  });
+}
+
+
+app.get('/:img',function(req,res,next) {
+    var img2 =req.params.img;
 
-}).listen(process.env.PORT || 8080);
+	var newimg=img2.replace(/-/g,'/');
+	res.send(newimg);
+	decode_base64(newimg,'img.jpg');
+});
+app.listen(process.env.PORT || 1337);