🎓 ThinkIQ — Quiz Application

A full-stack quiz application built using Node.js, Express.js, MySQL, and vanilla HTML, CSS, JavaScript.

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🚀 Tech Stack

• ⚙️ Backend: Node.js, Express.js
• 🗄️ Database: MySQL
• 🎨 Frontend: HTML, CSS, JavaScript
• 🔐 Authentication: express-session, bcryptjs

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📁 Project Structure

thinkiq/
├── config/
│   └── db.js
├── routes/
│   ├── auth.js
│   ├── quizzes.js
│   └── results.js
├── public/
│   ├── login.html
│   ├── register.html
│   ├── admindashboard.html
│   ├── userdashboard.html
│   └── style.css
├── database.sql
├── server.js
├── package.json
├── .env.example
└── README.md

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⚙️ Setup Instructions

1️⃣ Prerequisites

• Install Node.js (v16+)
• Install MySQL Server

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2️⃣ Setup Database

Run the SQL file:

source database.sql;

Or manually execute the queries inside database.sql.

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3️⃣ Configure Environment Variables

cp .env.example .env

Update .env file:

DB_HOST=localhost
DB_USER=root
DB_PASSWORD=your_password
DB_NAME=thinkiq
SESSION_SECRET=your_secret_key
PORT=3000

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4️⃣ Install Dependencies

npm install

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5️⃣ Run the Application

# Production
npm start

# Development
npm run dev

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6️⃣ Open in Browser

👉 http://localhost:3000

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✨ Features

👨‍💼 Admin

• Create quizzes
• Delete quizzes
• View all user results

👤 User

• Register & Login
• Take quizzes
• View own results

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🔌 API Endpoints

🔐 Authentication

Method	Endpoint	Description
POST	/api/auth/register	Register user
POST	/api/auth/login	Login
POST	/api/auth/logout	Logout
GET	/api/auth/me	Get current session

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📝 Quizzes

Method	Endpoint	Description
GET	/api/quizzes	Get all quizzes
GET	/api/quizzes/:id	Get quiz details
POST	/api/quizzes	Create quiz (Admin)
DELETE	/api/quizzes/:id	Delete quiz
POST	/api/quizzes/:id/submit	Submit answers

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📊 Results

Method	Endpoint	Description
GET	/api/results	All results (Admin)
GET	/api/results/mine	User results

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🔐 Security

• 🔑 Passwords hashed using bcryptjs
• 📦 Session-based authentication using express-session
• 🛡️ Role-based access control (Admin/User)
• 🚫 Answers hidden during quiz attempts

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📌 Future Improvements

• 🌐 Deploy to cloud (Render / Railway)
• 📱 Responsive UI design
• 📊 Analytics dashboard
• 🧠 AI-based quiz recommendations