Improve code redability 2

index.js

@@ -4,10 +4,47 @@
 
 // Load enviroment keys for stripe, mongo, vimeo, email 
 require('dotenv').config();
+
+// Server Application using express
 const express = require('express');
-const bodyParser = require('body-parser');
-const cookieParser = require('cookie-parser');
+const app = express();
+const port = process.env.PORT || 3000;
+// -- Accept request from other origins
 const cors = require('cors');
+const { corsOptions } = require('./config/corsOptions');
+app.use(cors(corsOptions));
+// -- Parse incoming requests with JSON payloads
+const bodyParser = require('body-parser');
+app.use(bodyParser.json());
+// -- Parse incoming requests with urlencoded payloads
+app.use(bodyParser.urlencoded({ extended: true }));
+// -- Parse cookies
+const cookieParser = require('cookie-parser');
+app.use(cookieParser());
+
+// Authentication
+const { signup, login, logout, resetPassword } = require('./auth/authEmail.js');
+app.route('/signup').get(signup).post(signup);
+app.route('/login').get(login).post(login);
+app.get('/logout', logout);
+app.route('/resetPassword').post(resetPassword);
+
+// Routes
+const profileRoute = require('./routes/profile.js');
+const postRoute = require('./routes/post.js');
+const songsRoute = require('./routes/songs.js');
+const paymentsRoute = require('./routes/payments.js');
+const bibleRoute = require('./routes/bible.js');
+const sessionChecker = require('./middleware/sessionChecker');
+// -- Private Routes
+app.use('/user', sessionChecker, profileRoute);
+app.use('/post', sessionChecker, postRoute);
+app.use('/payments', sessionChecker, paymentsRoute);
+app.use('/bible', sessionChecker, bibleRoute);
+app.use('/songs', sessionChecker, songsRoute);
+// -- Public Routes
+const subsplashRoute = require('./routes/subsplash.js');
+app.use('/subsplash', subsplashRoute);
 
 // Web Push Notifications
 const webPush = require('web-push');
@@ -18,37 +55,11 @@ webPush.setVapidDetails('mailto:' + webPushEmail, publicVapidKey, privateVapidKe
 
 
 const { cookiesOptions } = require('./config/cookiesOptions');
-const { corsOptions } = require('./config/corsOptions');
 const { client_logger } = require('./utils/analyticsLogger.js');
 const { getSessionId, getUserId, getProfileId } = require('./utils/sessionUtils.js');
 
-// Server Application
-const app = express();
-const port = process.env.PORT || 3000; // Setup to run on heroku
-app.use(cors(corsOptions));
-app.use(bodyParser.json());
-app.use(bodyParser.urlencoded({ extended: true }));
-app.use(cookieParser());
-
+// Only bind the port if the DB connection is successful
 const DB = require("./mongoDB.js");
-
-// Routes
-const profileRoute = require('./routes/profile.js');
-const postRoute = require('./routes/post.js');
-const songsRoute = require('./routes/songs.js');
-const paymentsRoute = require('./routes/payments.js');
-const subsplashRoute = require('./routes/subsplash.js');
-const bibleRoute = require('./routes/bible.js');
-
-const sessionChecker = require('./middleware/sessionChecker');
-
-const { signup, login, logout, resetPassword } = require('./auth/authEmail.js');
-app.route('/signup').get(signup).post(signup);
-app.route('/login').get(login).post(login);
-app.get('/logout', logout);
-app.route('/resetPassword').post(resetPassword);
-
-// Get 
 DB.getDB.then((DB) => {
     console.log("Main logic: DB connected!");
 
@@ -59,6 +70,7 @@ DB.getDB.then((DB) => {
             userInfo: req.userInfo,
             profileInfo: req.profileInfo
         });
+        // This should not happend, since the sessionChecker should redirect to login
         res.json({ status: "ok" });
     });
 
@@ -69,17 +81,17 @@ DB.getDB.then((DB) => {
             // Validate email format
             const emailRegex = /^[^\s@]+@[^\s@]+\.[^\s@]+$/;
             if (!emailRegex.test(email)) {
-                return res.status(400).json({ status: "error", message: "Provide a valid email" });
+                return res.status(400).json({ status: "Provide a valid email" });
             }
             // Check for an invitation
             const invitation = await DB.getInvitation(email);
             if (!invitation) {
-                return res.status(404).json({ status: "error", message: "No invitation found for this email" });
+                return res.status(404).json({ status: "No invitation found for this email" });
             }
             // Check if the user is already registered
             const existingUser = await DB.getUser(email);
             if (existingUser?._id) {
-                return res.status(409).json({ status: "error", message: "This user is already registered" });
+                return res.status(409).json({ status: "This user is already registered" });
             }
             // Capture event in logging
             client_logger.capture({
@@ -90,35 +102,38 @@ DB.getDB.then((DB) => {
             return res.json({ status: "ok", invitation });
         } catch (error) {
             console.error("Error processing invite check:", error);
-            return res.status(500).json({ status: "error", message: "Internal server error" });
+            return res.status(500).json({ status: "Internal server error" });
         }
     });
 
 
     // Change the active profile for the user.
     app.post('/changeProfile', sessionChecker, async (req, res) => {
-        const user_sid = getUserId(req);
-        let profile = await DB.getProfile(req.body.profileid);
-        if (!profile) {
-            return res.json({
-                status: "profile does not exists",
-            });
+        try {
+            const user_sid = getUserId(req);
+            const profileId = req.body.profileid;
+            // Validate input
+            if (!profileId) {
+                return res.status(400).json({ status: "Profile ID is required" });
+            }
+            // Fetch profile from DB
+            const profile = await DB.getProfile(profileId);
+            if (!profile) {
+                return res.status(404).json({ status: "Profile does not exist" });
+            }
+            // Check ownership
+            if (profile.userid !== user_sid) {
+                return res.status(403).json({ status: "Profile does not belong to the logged-in user" });
+            }
+            // Update active profile cookie
+            res.cookie('profile_id', profile._id, cookiesOptions);
+            return res.json({ status: "ok", profile });
+        } catch (error) {
+            console.error("Error changing profile:", error);
+            return res.status(500).json({ status: "Internal server error" });
         }
-        let isUserOwnerOfTheProfile = profile.userid != user_sid;
-        if (isUserOwnerOfTheProfile) {
-            return res.json({
-                status: "profile does not belong to the logged user",
-            });
-        }
-        // Change the coockie for active profile, this will inform all future requests
-        res.cookie('profile_id', profile._id, cookiesOptions);
-        return res.json({
-            status: "ok",
-            ...profile
-        });
     });
 
-
     // This is the endpoint to refresh the push notification token
     app.post('/token/', sessionChecker, async (req, res) => {
         const profileid = getProfileId(req);
@@ -137,16 +152,6 @@ DB.getDB.then((DB) => {
         if (profileid) await DB.setWebSubscription(profileid, subscription);
     });
 
-
-    //Private Routes
-    app.use('/user', sessionChecker, profileRoute);
-    app.use('/post', sessionChecker, postRoute);
-    app.use('/payments', sessionChecker, paymentsRoute);
-    app.use('/bible', sessionChecker, bibleRoute);
-    app.use('/songs', sessionChecker, songsRoute);
-    //Public Routes
-    app.use('/subsplash', subsplashRoute);
-
     // route for handling 404 requests(unavailable routes)
     app.use(function (req, res, next) {
         res.status(404).send("Sorry can't find that!")