changed bodyparser to express.json

app/server.js

@@ -1,18 +1,18 @@
 const express = require("express");
 const dotenv = require("dotenv");
-const bodyParser = require("body-parser");
 const jwt = require("jsonwebtoken");
 const app = express();
 
 dotenv.config();
 
-app.use(bodyParser.json());
+app.use(express.json());
 
 const authenticateToken = (req, res, next) => {
-  const token = req.header("Authorization")?.split(" ")[1];
+  const authHeader = req.header("Authorization");
+  const token = authHeader && authHeader.split(" ")[1];
 
   if (!token) {
-    return res.status(403).send("A token is required for authentication");
+    return res.status(403).json({ error: "A token is required for authentication" });
   }
 
   try {
@@ -20,9 +20,10 @@ const authenticateToken = (req, res, next) => {
     const verified = jwt.verify(token, jwtSecretKey);
     req.user = verified; 
   } catch (err) {
-    return res.status(401).send("Invalid token");
+    return res.status(401).json({ error: "Invalid token" });
   }
-  next();
+  
+  next(); 
 };
 
 const popcenRoutes = require("./api/routes/popcen");
@@ -36,6 +37,6 @@ app.use("/popcen", authenticateToken, popcenRoutes);
 app.use("/popcenCount", authenticateToken, popcenCountRoutes); 
 
 const PORT = process.env.PORT || 3000;
-app.listen(PORT,'0.0.0.0', () => {
-  console.log(`Server is running on port ${PORT}`);
+app.listen(PORT, '0.0.0.0', () => {
+  console.log(`Server is running on port ${PORT} in ${process.env.NODE_ENV || 'development'} mode`);
 });