Nexus Chat v2

Ephemeral, password-protected chat index automatically removes the Room document when rooms with randomly generated, permanently reserved identities.

Built with Node.js, Express, Socket.IO and MongoDB. Supports image/file upload via Cloudinary and automatic cleanup of empty/expired rooms.

expiresAt is reached Features

• Create password-protected rooms (names are sanitized and limited to 32 characters)
• Join rooms with a password
• Random unique username generation (Adjective_Noun##) — each username is reserved in the DB.
• A periodic cleanup job (runs hourly) removes orphaned forever
• Ephemeral rooms: when the last member leaves the room is scheduled to expire (24 hours) and MongoDB TTL index deletes it
• Hourly messages (messages referencing rooms that no cleanup job removes orphaned messages
• File upload endpoint that stores files on Cloudinary
• Static longer exist).
• When a new frontend served from public/

Quick start

1. Clone the repo: git member joins, `expiresAt clone https://github.com/Dxic/nexusv2.git cd nexusv2

2. Install dependencies: npm install

3. Create a .env file in the projectis unset andmemberCount root with the required environment variables (see below).

4. Run:

   • Production: npm start
   • Development (auto-reload): npm run dev

` increments.

Security notesBy default the server listens on PORT (defaults to 3000).

Environment variables

The server expects the following environment variables:

• MONGODB_URI — MongoDB connection string (required)
• Room passwords are hashed with CLOUDINARY_CLOUD_NAME — Cloudinary cloud name (required for uploads)
• CLOUDINARY_API_KEY — Cloudinary API key ( bcrypt before storage.
• Generatedrequired for uploads)
• CLOUD usernames are permanently reserved (stored inINARY_API_SECRET — Cloudinary API secret (required for uploads)
• PORT — optional, port to UsedUsername) to guarantee run the server on (defaults to 3000)

Example .env: MONGODB_URI=mongodb+srv://user:pass@cluster.example.com/mydb CLOUDINARY_CLOUD uniqueness.

• Ensure your MongoDB_NAME=your-cloud-name instance and Cloudinary credentials are secured; do not commit .envCLOUDINARY_API_KEY=xxx CLOUDINARY_API_SECRET to source control.

Dependencies=yyy

PORT=300 Key runtime dependencies (from0

Available scripts

• package.json):
• express
• socket.io
• mongoose npm start — start server (node server.js)
• npm run dev — start server with nodemon for development

HTTP API

All endpoints are prefixed with- dotenv

• bcryptjs

• multer

• cloudinary /api.

• POST /api/username

  • Generate

• streamifier

• multer a new unique username.

  • Response: 200 { "-storage-cloudinary

Dev dependency:

• nodemon