---

Built with Claude Code Skills

This project was rapidly developed using wigtn-plugins, a Claude Code Skills plugin suite for fast, efficient development.

The entire microservices architecture (Web, API, AI) was designed and implemented through an AI-assisted development workflow, demonstrating the power of Claude Code Skills for building production-ready applications.

---

Features

• Subtitle Extraction - Extract subtitles from YouTube captions or via WhisperX STT
• Auto Translation - Translate English to Korean using OpenAI GPT-4o-mini
• AI Analysis - Generate summaries, watch scores, keywords, and highlights
• Real-time Sync - Synchronized script panel with video playback
• Floating Memo - Take notes while watching videos

---

Architecture

┌─────────────┐     ┌─────────────┐     ┌─────────────┐
│   Nginx     │────▶│    Web      │     │   OpenAI    │
│  (SSL/TLS)  │     │  (Next.js)  │     │   GPT-4o    │
└──────┬──────┘     └──────┬──────┘     └─────────────┘
       │                   │                   ▲
       │            ┌──────▼──────┐     ┌──────┴──────┐
       └───────────▶│    API      │────▶│     AI      │
                    │  (NestJS)   │     │  (FastAPI)  │
                    │  Port 4000  │     │  Port 5000  │
                    └─────────────┘     └──────┬──────┘
                                               │
                                        ┌──────▼──────┐
                                        │  WhisperX   │
                                        │  (STT API)  │
                                        └─────────────┘

Service	Tech Stack	Port	Role
Web	Next.js 16, React 19	3000	Frontend UI
API	NestJS 10, TypeScript	4000	API Gateway
AI	FastAPI, Python 3.11	5000	LLM Analysis, STT

---

Project Structure

wigvu/
├── apps/
│   ├── web/              # Frontend (Next.js 16)
│   ├── api/              # Backend API Gateway (NestJS 10)
│   └── ai/               # AI Backend (FastAPI)
├── docs/
│   ├── prd/              # Product Requirements Documents
│   └── deployment/       # Deployment Guides
├── nginx/                # Nginx Configuration
├── scripts/              # GCP Deployment Scripts
├── .github/workflows/    # CI/CD Pipelines
├── docker-compose.yml    # Local Development
├── docker-compose.hub.yml # Production Deployment
└── .env.example          # Environment Variables Template

---

Tech Stack

Frontend

• Next.js 16, React 19, TypeScript 5
• Tailwind CSS 4, TanStack Query, Radix UI

Backend API

• NestJS 10, Express, TypeScript
• ytdl-core, Circuit Breaker Pattern

AI Service

• FastAPI, Python 3.11
• OpenAI API, WhisperX, yt-dlp

Infrastructure

• Docker, Nginx, Let's Encrypt
• GitHub Actions, GCP Compute Engine

---

Quick Start

Using Docker Compose (Recommended)

# Clone repository
git clone https://github.com/wigtn/wigvu.git
cd wigvu

# Configure environment
cp .env.example .env
# Edit .env with your API keys

# Run all services
docker-compose up -d

# Access
# Web: http://localhost:3000
# API: http://localhost:4000/api/v1/health
# AI:  http://localhost:5000/health

Running Services Individually

# Web (Terminal 1)
cd apps/web
npm install
npm run dev

# API (Terminal 2)
cd apps/api
npm install
npm run start:dev

# AI (Terminal 3)
cd apps/ai
python -m venv venv
source venv/bin/activate  # Windows: venv\Scripts\activate
pip install -r requirements.txt
uvicorn main:app --reload --port 5000

---

Environment Variables

Variable	Description	Required
OPENAI_API_KEY	OpenAI API Key	Yes
INTERNAL_API_KEY	Inter-service Authentication Key	Yes
YOUTUBE_API_KEY	YouTube Data API v3 Key	Optional
STT_API_URL	WhisperX STT Server URL	Optional
OPENAI_MODEL	OpenAI Model (default: gpt-4o-mini)	No
MAX_VIDEO_DURATION_MINUTES	Max video length for analysis	No

See .env.example for all available options.

---

API Endpoints

API Gateway (Port 4000)

Method	Endpoint	Description
GET	/api/v1/health	Health Check
GET	/api/v1/youtube/metadata/:videoId	Get Video Metadata
GET	/api/v1/transcript/:videoId	Get Transcript
POST	/api/v1/analysis	Full Video Analysis

AI Service (Port 5000)

Method	Endpoint	Description
GET	/health	Health Check
POST	/api/v1/analyze	LLM Analysis
POST	/api/v1/translate	Translation
POST	/stt/video/:videoId	Speech-to-Text

---

Deployment

Docker Hub Images

Pre-built images are available on Docker Hub:

docker-compose -f docker-compose.hub.yml up -d

• morirokim/wigvu-web:latest
• morirokim/wigvu-api:latest
• morirokim/wigvu-ai:latest

GCP Deployment

• Quick Start Guide
• GCP Deployment Guide
• SSL Setup Guide

---

Documentation

• PRD - WIGVU Service
• PRD - AI Service
• PRD - Service Separation

---

License

MIT License

Copyright (c) 2026 WIGTN Crew