Vision is a modern, highly secure, and feature-rich examination platform designed to host programming and theoretical assessments. It provides a robust, anti-cheat environment built to handle live, real-time proctoring, AI-assisted grading, and identity verification seamlessly.

This platform bridges the gap between students giving remote exams and mentors/admins requiring strict supervision, ensuring 100% academic integrity.

• Strict Lockdown: Exam sessions operate in a forced fullscreen mode. Exiting fullscreen logs a severe violation.
• Tab & Window Tracking: Built-in visibility listeners track if a student switches tabs or opens another app. High-severity violations trigger immediate background webcam snapshots.
• Violation Thresholds: Customizable thresholds where the exam is automatically terminated if a student breaches the violation limit.
• Copy-Paste Restrictions: Right-click, copy, paste, and developer console shortcuts are completely disabled during an active exam.

• Pre-Exam Verification: Before entering an exam, students must pass through an identity verification gateway.
• Dual Photo Capture: Students capture a live selfie (face scan) followed by a physical ID Card photo using the built-in HTML5 camera sequence.
• Mentorship Approval: These photos are stored securely and appear on the Admin Dashboard natively so administrators can selectively approve or revoke candidate access.

• Integrated natively with Cloudinary for scalable, zero-cost media storage.
• Random interval face snapshots and violation-triggered screenshots are silently captured, optimized, and uploaded to a dedicated vision/ vault.
• CSV imports and image uploads do not choke the local server.

• Contains a live Code Editor powered by Judge0 for instantaneous Code Compilation and execution in dozens of languages.
• Allows Multiple Choice Questions (MCQs), Subjective/Short Answers, and Code Questions inside the same exam.
• Live Mentor Chat: Students can trigger a "Get Help" signal to live mentors via WebSockets, allowing silent assistance without breaking proctoring rules.

• Complete global oversight of the application.
• Live system health, aggregated statistics, and complete Audit logs tracking who did what.
• Role-based User Management (Invite Mentors, Super Mentors, restrict access).
• "Candidates" verification board to review eKYC images.

• Mentors can create custom exams, import questions, and set passing marks.
• Live View: Watch students taking exams in real-time, view their current violation counts, and force-terminate malicious sessions instantly.
• Manual Grading: A beautiful interface to review and manually grade subjective code or short answers.

• One-Click Imports: Bulk import users via simple CSV files.
• Automated Grading: For MCQs, the system instantly calculates and stores results in the DB.
• Smart LeetCode / CodeChef Scraper: A powerful scraper tool allows mentors to paste a LeetCode problem URL. The system visits the URL, extracts the problem description, hidden test cases, and memory limits, and formats it directly into the Exam Builder!

• Express + Node.js robust API layer.
• Redis Caching: Rapid API responses and rate-limiting using Redis to prevent DDoS and spam registrations.
• Queue System (Bull): Complex tasks like grading huge codebase responses are pushed to a background task queue so the platform never freezes.

Frontend Framework:

• React 18 (Vite)
• Tailwind CSS (Custom sleek UI with conditional rendering & animations)
• Framer Motion (Fluid transitions)
• Monaco Editor (Code formatting inside the browser)
• Lucide React (Iconography)

Backend Architecture:

• Node.js & Express.js
• MongoDB via Mongoose (Persistent Storage)
• Redis (Caching & Rate Limiting queues)
• Socket.IO (Real-time Live Proctoring)

External Services:

• Cloudinary: Zero-cost image hosting & media optimization.
• Judge0 CE: Remote code execution and grading engine.
• Puppeteer / Cheerio: Problem scraping from coding spheres.

Before running, assure you have Node.js, MongoDB, and optionally Redis running locally.

1. Open a terminal and navigate to the backend directory:

   cd backend

2. Install dependencies:

   npm install

3. Create a .env file referencing your local/cloud configurations (MongoDB URI, Cloudinary Keys, Redis URL, JWT Secret).
4. Start the server:

   npm run dev

1. Open a second terminal and navigate to the frontend directory:

   cd frontend

2. Install dependencies:

   npm install

3. Create a .env file pointing VITE_API_URL to your backend port.
4. Run the UI:

   npm run dev

Visit http://localhost:5173 to experience the ultimate Vision platform!

• Passwords are salt hashed before storing (Bcrypt).
• Use helmet and standard CORS restrictions to keep APIs sanitized.
• Rate limits block brute force attempts for login endpoints.
• Ensure the Frontend always initiates audio/video permissions politely—browsers block silent camera triggers otherwise.

Built with precision and passion for next-gen academic integrity.