🚀 StudyCraft – Productivity & Learning Platform

StudyCraft is a secure, full-stack web application designed to help students manage their academic workflow efficiently. It combines scheduling, task management, and advanced computational tools into a single, scalable platform.

Built with a strong focus on security, performance, and real-world usability.

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✨ Key Features

• 🔐 Secure Authentication

  • JWT-based authentication with access & refresh tokens
  • Password hashing using bcrypt
  • Account lockout after multiple failed login attempts

• 📅 Smart Class Scheduler

  • Detects time conflicts automatically
  • Prevents duplicate entries
  • Supports recurring schedules

• ✅ Task & Reminder Management

  • Create and manage deadlines efficiently
  • Get timely notifications

• 📊 Interactive Dashboard

  • Today's classes overview
  • Upcoming tasks
  • Notifications & usage insights

• 🔔 Real-Time Notifications

  • Browser notifications using Service Workers
  • Supports push notifications (VAPID-based)

• 🧮 Advanced Mathematical Utilities

  • Fast Modular Exponentiation
  • Extended Euclidean Algorithm
  • Miller–Rabin Primality Test
  • Matrix & Scientific Calculators (safe implementation, no eval())

• 🖼 Secure Profile Management

  • Image upload via Cloudinary
  • Input validation and sanitization

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🛡 Security Highlights

• Helmet with Content Security Policy (CSP)
• Secure JWT cookies (no localStorage usage)
• CSRF protection using csurf
• Rate limiting (global + authentication routes)
• Input validation & sanitization:
  • express-validator
  • express-mongo-sanitize
  • hpp
• Strict CORS policy
• Centralized error handling
• No sensitive data stored in source code

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📸 Screenshots

🛠 Tech Stack

• Frontend: EJS, HTML, CSS, JavaScript
• Backend: Node.js, Express.js
• Database: MongoDB
• Authentication: JWT, bcrypt
• Cloud Storage: Cloudinary

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📂 Project Structure

src/ → Backend (routes, controllers, middleware, models) views/ → EJS templates public/ → Static assets (CSS, JS, service worker) docs/API.md → API documentation

🌐 Live Demo

👉 https://studycraft-zwp6.onrender.com/

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⚙️ Installation & Setup

1. Clone the repository

git clone https://github.com/yourusername/studycraft.git
2.Navigate to the project directory
cd studycraft
3.Install dependencies

npm install

4.Create .env file

5.copy .env.production.example .env

6.Add required environment variables:

MONGO_URI=your_mongodb_uri
JWT_SECRET=your_secret_key
CLOUDINARY_URL=your_cloudinary_config

7.npm run dev

🧑‍💻 Usage Guide

1.Sign up at /signup

2.Login via /login

3.Add classes in /scheduler

4.Manage tasks in /tasks

5.View dashboard insights at /dashboard

6.Use /calculator for utilities

🙌 Author

Mahendra Harijan
🔗 GitHub: https://github.com/mahendra-harijan

🔗 LinkedIn: https://linkedin.com/in/mahendra-harijan

🔗 portfolio: https://mahendraharijan.me


## ⭐ Support

If you like this project, give it a ⭐ on GitHub!