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📸 Screenshots

Home Page	Problems List	Code Editor

Dashboard	Submissions	Account

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🚀 What is CodeScale?

CodeScale is a full-stack, focused coding judge platform built for developers who want to sharpen their Data Structures & Algorithms skills. Think of it as a self-hosted, lightweight LeetCode — with a built-in AI assistant, a dry-run canvas, real code execution, and a beautiful dashboard to track your growth.

The platform currently supports JavaScript and Python, with 30 curated problems spanning Easy, Medium, and Hard difficulty levels.

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✨ Key Features

Feature	Description
🧩 Problem Library	30 problems (10 Easy / 10 Medium / 10 Hard) with topic filters like Arrays, Trees, DP, Graphs and more
⚡ Live Code Execution	Write JavaScript or Python in a Monaco editor and run code with real test cases, getting instant verdicts
🤖 AI Chatbot Assistant	Built-in DSA-only AI (powered by Groq) that guides you on approach, complexity, and strategy — without giving away the answer
🖊️ Dry Run Canvas	A freehand drawing canvas to sketch arrays, trees, or graphs before writing a single line of code
📊 User Dashboard	Points, streaks, activity heatmap, submission breakdown, and a leaderboard — all in one place
📜 Submission History	Full history of every accepted/rejected submission with source code review
🔐 Auth System	JWT-based authentication with secure cookie storage, bcrypt password hashing, and Zod validation
👤 Account Management	Update name, email, password, and public bio from your account settings page
🛡️ Admin Panel	Protected admin routes to manage problems and platform analytics
🏆 Leaderboard	Global rankings by total points earned across all accepted problems

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🗂️ Folder Structure

CodeScale/
├── 📁 backend/
│   ├── 📁 config/
│   │   ├── db.js                    # MongoDB connection
│   │   ├── .env                     # Environment variables
│   │   └── .env.example             # Env template
│   │
│   ├── 📁 controllers/
│   │   ├── auth.controller.js        # Sign up / Sign in / Sign out
│   │   ├── user.controller.js        # Profile & account updates
│   │   ├── problems.controller.js    # Fetch problems & details
│   │   ├── user_submission.controller.js  # Run & submit code
│   │   ├── user_history.controller.js     # Submission history
│   │   ├── submissionDetail.controller.js # Single submission detail
│   │   ├── user_analytics.controller.js   # Dashboard stats & heatmap
│   │   ├── chatbot.controller.js     # Groq AI chatbot integration
│   │   ├── admin.controller.js       # Admin problem management
│   │   └── plateform_analytics.controller.js # Platform-wide stats
│   │
│   ├── 📁 middleware/
│   │   ├── auth.middleware.js        # JWT verification
│   │   └── admin.middleware.js       # Admin role guard
│   │
│   ├── 📁 models/
│   │   ├── user.model.js             # User schema (name, email, stats)
│   │   ├── problems.model.js         # Problem schema (title, difficulty, tags)
│   │   ├── submission.model.js       # Submission schema (code, verdict)
│   │   └── avatar/                  # Default avatar assets
│   │
│   ├── 📁 routes/
│   │   ├── auth.route.js
│   │   ├── problems.route.js
│   │   ├── user.route.js
│   │   ├── user_submission.route.js
│   │   ├── user_history.route.js
│   │   ├── user_analytics.route.js
│   │   ├── chatbot.route.js
│   │   └── admin.route.js
│   │
│   ├── 📁 services/
│   │   └── executionEngine.js       # Code execution sandbox (JS & Python)
│   │
│   ├── 📁 utils/
│   │   ├── template.js              # Language code templates
│   │   └── user_statsHelper.js      # Points & streak calculation
│   │
│   ├── 📁 temp/                     # Temp files for code execution (auto-cleaned)
│   └── server.js                    # Express app entry point
│
├── 📁 frontend/
│   ├── 📁 src/
│   │   ├── 📁 api/
│   │   │   └── api.js               # Axios base instance
│   │   │
│   │   ├── 📁 components/
│   │   │   ├── 📁 codeEditor/
│   │   │   │   ├── CodeEditor.jsx         # Monaco editor wrapper
│   │   │   │   ├── DryRunCanvas.jsx       # Freehand drawing canvas
│   │   │   │   ├── ProblemDescription.jsx # Problem sidebar
│   │   │   │   ├── Language.jsx           # Language switcher
│   │   │   │   ├── RunCodeButton.jsx
│   │   │   │   └── SubmitButton.jsx
│   │   │   │
│   │   │   ├── 📁 chatbot/
│   │   │   │   └── Chatbot.jsx            # AI assistant panel
│   │   │   │
│   │   │   ├── 📁 charts/
│   │   │   │   ├── StatsOverview.jsx      # Points & difficulty breakdown
│   │   │   │   ├── SubmissionChart.jsx    # Submission result chart
│   │   │   │   └── DashboardSkeleton.jsx  # Loading skeleton
│   │   │   │
│   │   │   ├── ActivityMap.jsx            # GitHub-style activity heatmap
│   │   │   ├── FilterProblem.jsx          # Tag/difficulty filter UI
│   │   │   ├── Leaderboard.jsx            # Rankings widget
│   │   │   ├── RecentSubmission.jsx       # Recent activity feed
│   │   │   ├── Navbar.jsx
│   │   │   └── HamburgerMenu.jsx
│   │   │
│   │   ├── 📁 pages/
│   │   │   ├── HomePage.jsx               # Landing page
│   │   │   ├── ProblemsList.jsx           # All problems grid/list view
│   │   │   ├── ProblemPage.jsx            # Individual problem + editor
│   │   │   ├── SubmissionHistory.jsx      # Full submission log
│   │   │   ├── SubmissionDetail.jsx       # Single submission view
│   │   │   ├── 📁 auth/
│   │   │   │   ├── SignIn.jsx
│   │   │   │   └── SignUp.jsx
│   │   │   └── 📁 user/
│   │   │       ├── UserDashboard.jsx      # Personal stats dashboard
│   │   │       └── MyAccount.jsx          # Account settings
│   │   │
│   │   ├── 📁 hooks/
│   │   │   ├── signIn.js
│   │   │   ├── signUp.js
│   │   │   └── useChatBot.js
│   │   │
│   │   ├── 📁 services/
│   │   │   ├── heatMap.js             # Heatmap data formatter
│   │   │   ├── signIn.service.js
│   │   │   └── signUp.service.js
│   │   │
│   │   ├── 📁 context/
│   │   │   └── ProblemContext.jsx     # Problem state context
│   │   │
│   │   ├── App.jsx
│   │   ├── AppLayout.jsx
│   │   └── main.jsx
│   │
│   ├── index.html
│   ├── vite.config.js
│   └── package.json
│
├── LICENSE
└── README.md

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🛠️ Tech Stack

Frontend

Technology	Purpose
	UI framework
	Build tool & dev server
	Utility-first styling
	Client-side routing
	Animations & transitions
	VS Code-quality code editor
	Dry run drawing canvas
	HTTP client

Backend

Technology	Purpose
	REST API framework
	Server runtime
	Database
	ODM for MongoDB
	Authentication tokens
	Password hashing
	Input validation
	AI chatbot (DSA assistant)
	Dev auto-restart

Deployment

Service	Role
	Frontend hosting
	Backend hosting

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🔌 API Overview

/api/v1/auth        → Sign up, Sign in, Sign out
/api/v1/problems    → Get all problems, get problem by ID
/api/v1/submission  → Run code, submit solution
/api/v1/user        → Profile, account update, submission history
/api/v1/analytics   → Dashboard stats, activity heatmap, leaderboard
/api/v1/chatbot     → AI DSA assistant (Groq-powered)
/api/v1/admin       → Admin problem management & platform analytics

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🏁 Getting Started Locally

Prerequisites

• Node.js v18+
• MongoDB (local or Atlas)
• A Groq API key

1. Clone the repo

git clone https://github.com/riteshrana12-dev/codeScale.git
cd CodeScale

2. Setup Backend

cd backend
cp config/.env.example config/.env
# Fill in your MongoDB URI, JWT secret, and Groq API key in config/.env
npm install
npm run dev

3. Setup Frontend

cd ../frontend
# Create .env with your backend URL
echo "VITE_API_URL=http://localhost:3000" > .env
npm install
npm run dev

4. Open in browser

Frontend → http://localhost:5173
Backend  → http://localhost:3000

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🌐 Live Deployment

	URL
🖥️ Frontend	https://code-scale.vercel.app
⚙️ Backend API	Hosted on Render (connected internally)

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📄 License

This project is licensed under the ISC License — see the LICENSE file for details.

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