feat: Implement collaborative editing features for notes

- Added collaboration toggle functionality for note owners.
- Introduced collaborator management (add/remove) via email.
- Enhanced note model to support collaborators and collaboration status.
- Updated dashboard view to display collaboration options and current collaborators.
- Integrated Socket.IO for real-time collaboration on note editing.
- Implemented email notifications for invited collaborators.
- Created mailer utility for sending invitation emails.
- Added necessary routes and services for collaboration features.

Author: soumya813

.vscode/tasks.json

@@ -8,6 +8,18 @@
 			"group": "build",
 			"isBackground": true,
 			"problemMatcher": []
+		},
+		{
+			"label": "Install deps",
+			"type": "shell",
+			"command": "npm install",
+			"group": "build"
+		},
+		{
+			"label": "Install new deps",
+			"type": "shell",
+			"command": "npm install",
+			"group": "build"
 		}
 	]
 }

README.md

@@ -132,6 +132,18 @@ The app will run at [http://localhost:5000](http://localhost:5000)
 
 ---
 
+## 🔄 Real-time Collaboration
+
+This app includes collaborative editing powered by Socket.IO:
+
+- Live updates while multiple authenticated users view the same note
+- Presence and typing indicators
+- Changes sync instantly; saving persists the note
+
+It runs over the same Express server and reuses session authentication. No extra setup is required for local development.
+
+---
+
 ## 🌟 SSoC’25 Spotlight
 
 📢 This project is officially part of **SSoC'25 (Social Summer of Code 2025)!**

app.js

@@ -1,6 +1,7 @@
 require('dotenv').config();
 
 const express = require('express');
+const http = require('http');
 const expressLayouts =  require('express-ejs-layouts');
 const methodOverride = require('method-override');
 const { connectDB } = require('./server/config/db');
@@ -9,6 +10,7 @@ const session = require('express-session');
 const passport = require('passport');
 
 const app = express();
+const server = http.createServer(app);
 const config = getConfig();
 
 // Trust reverse proxy (e.g., when deployed behind Nginx/Render/Heroku) so secure cookies work
@@ -65,7 +67,9 @@ if (config.NODE_ENV !== 'test') {
   console.log('Using MongoDB for session storage');
 }
 
-app.use(session(sessionOptions));
+// Reuse the same session middleware for Express and Socket.IO
+const sessionMiddleware = session(sessionOptions);
+app.use(sessionMiddleware);
 
 // Passport middleware
 app.use(passport.initialize());
@@ -108,6 +112,7 @@ app.use('/', require('./server/routes/health'));
 app.use('/', require('./server/routes/auth'));
 app.use('/', require('./server/routes/index'));
 app.use('/', require('./server/routes/dashboard'));
+app.use('/', require('./server/routes/share'));
 
 // Handle 404 - This should be after all other routes
 app.get('*', function(req, res) {
@@ -148,8 +153,12 @@ process.on('SIGINT', () => {
   process.exit(0);
 });
 
+// Initialize Socket.IO and real-time features
+const { initSockets } = require('./server/sockets');
+initSockets({ server, sessionMiddleware, passport });
+
 if (config.NODE_ENV !== 'test') {
-  app.listen(config.PORT, () => {
+  server.listen(config.PORT, () => {
     console.log(`App listening on ${config.PORT}`);
   });
 }

logs/combined.log

@@ -30,7 +30,9 @@
     "passport": "^0.7.0",
     "passport-google-oauth20": "^2.0.0",
     "redis": "^5.6.1",
-    "winston": "^3.17.0"
+  "winston": "^3.17.0",
+  "socket.io": "^4.7.5",
+  "nodemailer": "^6.9.14"
   },
   "devDependencies": {
     "jest": "^30.0.5",