Problem
Developers spend significant time in manual code reviews. Feedback can be inconsistent, and beginners often struggle to understand why code quality is low.
Case Study
AI Code Reviewer
An AI-powered developer assistant that analyzes source code and returns quality score, actionable suggestions, easy explanations, and improved code fixes using Groq LLM.
Solution
This project provides instant AI feedback through a clean coding interface. Users can paste or upload code and receive analysis, score, explanation, and improved code in one workflow.
Key Features
- Monaco Editor with syntax highlighting
- Language selection for JavaScript, TypeScript, Python, Java, C, and C++
- File upload for source code analysis
- AI code analysis with structured feedback
- Code quality score out of 100
- AI suggestions for bugs, performance, and best practices
- Plain-English explanation of submitted code
- AI suggested fixed code with one-click apply
- Collapsible sidebar and dark/light mode
Frontend Stack
Next.jsTypeScriptTailwind CSSshadcn/uiMonaco Editor
Backend Stack
Node.jsExpressGroq SDK (llama3-70b-8192)
Architecture Flow
- User enters or uploads source code in Monaco Editor.
- Frontend sends code and selected language to backend endpoints.
- Backend calls Groq LLM for analysis and explanation generation.
- Response returns score, suggestions, explanation, and fixed code.
- User reviews output and can apply AI-suggested fix instantly.
API Endpoints
POST /api/analyze-code: returns score, suggestions, and fixed code.
POST /api/explain-code: returns plain-English explanation of code.
{
"code": "function sum(a, b) { return a + b; }",
"language": "javascript"
}Run Locally
Backend:
cd backend npm install npm run start
Frontend:
cd frontend npm install npm run dev
Future Improvements
- Add authentication and project history
- Save previous analyses and compare results
- Improve model prompts for richer feedback
- Add collaborative review mode for teams
This is one of my practice projects, built to strengthen real-world full-stack and AI integration skills.