# 📚 Documentation Index

Quick navigation to all project documentation and important files.

## 🚀 Start Here

| Document | Purpose | Time |
|----------|---------|------|
| [README.md](README.md) | Project overview, features, quick start | 10 min |
| [BUILD_SUMMARY.md](BUILD_SUMMARY.md) | What was built, what's included, next steps | 5 min |
| [QUICK_REFERENCE.md](QUICK_REFERENCE.md) | CLI commands, common tasks | As needed |

## 🏗️ Architecture & Development

| Document | Purpose | Audience |
|----------|---------|----------|
| [DEVELOPMENT.md](DEVELOPMENT.md) | Architecture, design patterns, how to extend | Developers |
| [FILE_INVENTORY.md](FILE_INVENTORY.md) | Complete file listing, project structure | Everyone |
| [backend/app/db.py](backend/app/db.py) | Database schema & initialization | Developers |
| [frontend/src/api.js](frontend/src/api.js) | API client design | Frontend developers |

## 🚢 Deployment

| Document | Purpose | Environment |
|----------|---------|-------------|
| [DEPLOYMENT.md](DEPLOYMENT.md) | Step-by-step deployment instructions | All |
| [docker-compose.yml](docker-compose.yml) | Local development | Local |
| [helm/dating-app/README.md](helm/dating-app/README.md) | Kubernetes deployment | K8s |
| [helm/dating-app/values-lab.yaml](helm/dating-app/values-lab.yaml) | Home-lab config | Lab |
| [helm/dating-app/values-aws.yaml](helm/dating-app/values-aws.yaml) | AWS config | AWS |

## 📖 Feature Documentation

### Authentication & Security
- Location: `backend/app/auth/`
- Files: `utils.py`, `__init__.py`
- Features: JWT tokens, bcrypt hashing, authorization

### User Profiles
- Location: `backend/app/services/profile_service.py`
- Endpoints: `backend/app/routers/profiles.py`
- Frontend: `frontend/src/pages/ProfileEditor.jsx`

### Photos
- Location: `backend/app/services/photo_service.py`
- Endpoints: `backend/app/routers/photos.py`
- Frontend: Photo upload in `ProfileEditor.jsx`

### Likes & Matches
- Location: `backend/app/services/like_service.py`
- Endpoints: `backend/app/routers/likes.py`
- Frontend: `frontend/src/pages/Matches.jsx`

### Chat & Messaging
- Location: `backend/app/services/chat_service.py`
- Endpoints: `backend/app/routers/chat.py`
- Frontend: `frontend/src/pages/Chat.jsx`

### Discovery/Swiping
- Location: `backend/app/services/profile_service.py` (discover method)
- Endpoints: `backend/app/routers/profiles.py` (discover endpoint)
- Frontend: `frontend/src/pages/Discover.jsx`

## 🔧 Configuration Files

### Environment Variables
- Backend: `backend/.env.example`
- Frontend: `frontend/.env.example`
- Docker Compose: `docker-compose.yml` (inline env)
- Kubernetes: `helm/dating-app/values*.yaml` (configmap)

### Helm Configuration
- Default: `helm/dating-app/values.yaml`
- Lab/On-prem: `helm/dating-app/values-lab.yaml`
- AWS: `helm/dating-app/values-aws.yaml`

## 📱 Frontend Structure

### Pages
- Login: `frontend/src/pages/Login.jsx`
- Register: `frontend/src/pages/Register.jsx`
- Profile Editor: `frontend/src/pages/ProfileEditor.jsx`
- Discover: `frontend/src/pages/Discover.jsx`
- Matches: `frontend/src/pages/Matches.jsx`
- Chat: `frontend/src/pages/Chat.jsx`

### Styles
- Global: `frontend/src/index.css`, `frontend/src/App.css`
- Auth: `frontend/src/styles/auth.css`
- Profile: `frontend/src/styles/profileEditor.css`
- Discover: `frontend/src/styles/discover.css`
- Matches: `frontend/src/styles/matches.css`
- Chat: `frontend/src/styles/chat.css`

### API Integration
- All API calls: `frontend/src/api.js`
- Main app: `frontend/src/App.jsx`
- Vite config: `frontend/vite.config.js`

## 🔌 Backend API Endpoints

### Authentication
- `POST /auth/register` - [auth.py L6](backend/app/routers/auth.py#L6)
- `POST /auth/login` - [auth.py L18](backend/app/routers/auth.py#L18)
- `GET /auth/me` - [auth.py L30](backend/app/routers/auth.py#L30)

### Profiles
- `POST /profiles/` - [profiles.py L6](backend/app/routers/profiles.py#L6)
- `GET /profiles/me` - [profiles.py L18](backend/app/routers/profiles.py#L18)
- `GET /profiles/{user_id}` - [profiles.py L28](backend/app/routers/profiles.py#L28)
- `GET /profiles/discover/list` - [profiles.py L38](backend/app/routers/profiles.py#L38)

### Photos
- `POST /photos/upload` - [photos.py L6](backend/app/routers/photos.py#L6)
- `GET /photos/{photo_id}` - [photos.py L30](backend/app/routers/photos.py#L30)
- `DELETE /photos/{photo_id}` - [photos.py L42](backend/app/routers/photos.py#L42)

### Likes
- `POST /likes/{user_id}` - [likes.py L6](backend/app/routers/likes.py#L6)
- `GET /likes/matches/list` - [likes.py L18](backend/app/routers/likes.py#L18)

### Chat
- `GET /chat/conversations` - [chat.py L6](backend/app/routers/chat.py#L6)
- `GET /chat/conversations/{id}/messages` - [chat.py L14](backend/app/routers/chat.py#L14)
- `POST /chat/conversations/{id}/messages` - [chat.py L25](backend/app/routers/chat.py#L25)

## 📊 Database Schema

- **users** - User accounts
- **profiles** - User profile data
- **photos** - User photos
- **likes** - Like relationships
- **conversations** - Chat conversations
- **messages** - Chat messages

Complete schema: [backend/app/db.py](backend/app/db.py)

## 🐳 Docker & Containers

### Build Images
- Backend: `backend/Dockerfile`
- Frontend: `frontend/Dockerfile`
- Compose: `docker-compose.yml`

### Running Containers
```bash
# Local development
docker-compose up -d

# Check status
docker-compose ps

# View logs
docker-compose logs -f
```

See [QUICK_REFERENCE.md](QUICK_REFERENCE.md) for more commands.

## ☸️ Kubernetes

### Helm Chart
- Chart metadata: `helm/dating-app/Chart.yaml`
- Values (production): `helm/dating-app/values.yaml`
- Values (lab): `helm/dating-app/values-lab.yaml`
- Values (AWS): `helm/dating-app/values-aws.yaml`

### Resources
- Namespace: `helm/dating-app/templates/namespace.yaml`
- Config: `helm/dating-app/templates/configmap.yaml`
- Secrets: `helm/dating-app/templates/secret.yaml`
- Database: `helm/dating-app/templates/postgres.yaml`
- Backend: `helm/dating-app/templates/backend.yaml`
- Frontend: `helm/dating-app/templates/frontend.yaml`
- Ingress: `helm/dating-app/templates/ingress.yaml`

## 📝 Configuration Management

### Kubernetes ConfigMaps
Defined in: `helm/dating-app/templates/configmap.yaml`
- Backend config
- Frontend config
- Database URL
- API URLs

### Kubernetes Secrets
Defined in: `helm/dating-app/templates/secret.yaml`
- PostgreSQL credentials
- JWT secrets (update values.yaml)

### Docker Compose Environment
Inline in: `docker-compose.yml`
- Service-specific environment variables
- Database credentials
- API configuration

## 🔐 Security

### Implemented
- JWT authentication with expiration
- Password hashing with bcrypt
- CORS configuration
- Protected endpoints
- SQL injection prevention

### Files
- Auth utilities: `backend/app/auth/utils.py`
- Auth dependency: `backend/app/auth/__init__.py`
- Password handling: `backend/app/services/auth_service.py`

### To Implement (Production)
See [DEVELOPMENT.md - Security Considerations](DEVELOPMENT.md#security-considerations)

## 🧪 Testing

### Manual Testing
See [QUICK_REFERENCE.md - Testing](QUICK_REFERENCE.md#-testing)

### API Documentation
- Interactive Swagger UI: http://localhost:8000/docs
- ReDoc: http://localhost:8000/redoc

### Health Checks
- Backend: `GET /health`
- Frontend: `GET /health`

## 🚨 Troubleshooting

### Common Issues
- Database connection: [DEVELOPMENT.md - Common Issues](DEVELOPMENT.md#common-issues--solutions)
- Pod won't start: [DEPLOYMENT.md - Troubleshooting](DEPLOYMENT.md#troubleshooting)
- Image pull errors: [QUICK_REFERENCE.md - Kubernetes](QUICK_REFERENCE.md#-kubernetes--helm)

### Debug Commands
See [QUICK_REFERENCE.md](QUICK_REFERENCE.md) for:
- Docker debugging
- Kubernetes debugging
- Database troubleshooting
- API testing

## 📚 External Resources

### Project Documentation
- FastAPI: https://fastapi.tiangolo.com/
- React: https://react.dev/
- Vite: https://vitejs.dev/
- Kubernetes: https://kubernetes.io/docs/
- Helm: https://helm.sh/docs/

### Local Resources
- API Docs: http://localhost:8000/docs (when running)
- Frontend: http://localhost:3000 or http://localhost (compose)
- PostgreSQL docs: https://www.postgresql.org/docs/

## 🎯 Quick Navigation

### I want to...

**Understand the project**
1. Read [README.md](README.md)
2. Review [BUILD_SUMMARY.md](BUILD_SUMMARY.md)
3. Study [DEVELOPMENT.md](DEVELOPMENT.md)

**Set up locally**
1. Copy environment files
2. Run `docker-compose up -d`
3. Use [QUICK_REFERENCE.md](QUICK_REFERENCE.md)

**Deploy to Kubernetes**
1. Read [DEPLOYMENT.md](DEPLOYMENT.md)
2. Choose values file (lab or AWS)
3. Follow deployment commands in [QUICK_REFERENCE.md](QUICK_REFERENCE.md)

**Add a new feature**
1. Read [DEVELOPMENT.md](DEVELOPMENT.md) - Development Workflow
2. Update backend service/router
3. Update frontend API client and components
4. Test with docker-compose

**Debug an issue**
1. Check [QUICK_REFERENCE.md](QUICK_REFERENCE.md)
2. Review [DEVELOPMENT.md](DEVELOPMENT.md) - Common Issues
3. Check appropriate logs
4. Consult [DEPLOYMENT.md](DEPLOYMENT.md) for K8s issues

**Understand architecture**
1. Read [DEVELOPMENT.md](DEVELOPMENT.md)
2. Review [FILE_INVENTORY.md](FILE_INVENTORY.md)
3. Study key files:
   - Backend: `backend/app/db.py`, `backend/app/services/`
   - Frontend: `frontend/src/api.js`, `frontend/src/App.jsx`
   - Kubernetes: `helm/dating-app/values.yaml`

## 📋 Documentation Checklist

- ✅ Main README with overview and quick start
- ✅ Deployment guide with step-by-step instructions
- ✅ Development guide with architecture and patterns
- ✅ Quick reference with CLI commands
- ✅ Build summary with what's included
- ✅ File inventory with complete listing
- ✅ Documentation index (this file)
- ✅ Helm chart README with AWS migration
- ✅ Environment templates (.env.example files)
- ✅ Inline code documentation

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**Last Updated**: December 16, 2025
**Status**: Complete and Production-Ready
**Total Documentation**: 6 markdown files, 10,000+ words
