🤖 AI Code Helper

An AI-powered programming learning and interview preparation assistant built with LangChain4j and OpenAI.

✨ Overview

AI Code Helper provides:

• Learning roadmaps and study plans
• Project guidance and best practices
• Job search and interview preparation
• Real-time programming Q&A

🧱 Tech Stack

• Backend: Java 21 + Spring Boot
• AI Framework: LangChain4j
• LLM: OpenAI (GPT-4o)
• Embeddings: OpenAI (text-embedding-3-small)
• Frontend: React + Vite

🚀 Quick Start

Requirements

• Java 21+
• Node.js 16+
• Maven 3.6+
• OpenAI API key

1) Backend

git clone <repository-url>
cd ai-code-helper

# Set API key
export OPENAI_API_KEY=sk-xxxx

# Run backend
mvn spring-boot:run

2) Frontend

cd ai-code-helper-frontend
npm install
npm run dev

3) Access

• Frontend: http://localhost:5173
• Backend: http://localhost:8081/api

🧩 Core Modules

• AiCodeHelperService: Core chat service
• AiController: Streaming chat endpoint
• RagConfig: RAG configuration
• InterviewQuestionTool: Interview question search
• SafeInputGuardrail: Input safety checks