change readme.md

media-store/server.js

@@ -1,9 +1,49 @@
 const cds = require("@sap/cds");
-const {
-  getDurationInMilliseconds,
-  getFormattedDateTime,
-  corsMiddleware,
-} = require("./util/helpers");
+
+const getDurationInMilliseconds = (start) => {
+  const NS_PER_SEC = 1e9; //  convert to nanoseconds
+  const NS_TO_MS = 1e6; // convert to milliseconds
+  const diff = process.hrtime(start);
+  return (diff[0] * NS_PER_SEC + diff[1]) / NS_TO_MS;
+};
+
+const getFormattedDateTime = () => {
+  let currentDateTime = new Date();
+  let formattedDateTime =
+    currentDateTime.getFullYear() +
+    "-" +
+    (currentDateTime.getMonth() + 1) +
+    "-" +
+    currentDateTime.getDate() +
+    " " +
+    currentDateTime.getHours() +
+    ":" +
+    currentDateTime.getMinutes() +
+    ":" +
+    currentDateTime.getSeconds();
+  return formattedDateTime;
+};
+
+const corsMiddleware = (req, res, next) => {
+  res.header("Access-Control-Allow-Origin", "*");
+  res.header(
+    "Access-Control-Allow-Methods",
+    "GET, PUT, PATCH, POST, DELETE, OPTIONS"
+  );
+  res.header(
+    "Access-Control-Allow-Headers",
+    "Origin, X-Requested-With, Content-Type, Accept, Authorization, Accept-Language"
+  );
+
+  //intercepts OPTIONS method
+  if ("OPTIONS" === req.method) {
+    //respond with 200
+    res.sendStatus(200);
+  } else {
+    //move on
+    next();
+  }
+};
 
 // handle bootstrapping events...
 cds.on("bootstrap", (app) => {