# 🎉 Project Summary: Custom NGINX Proxy Manager Backend

## ✅ What We've Built

You now have a **complete, production-ready backend** for managing NGINX reverse proxies with automatic SSL certificate management! Here's what's included:

### 🏗️ Core Features Implemented

**✅ Proxy Management API**
- Full CRUD operations for proxy entries
- Domain to target URL mapping
- HTTP/HTTPS support with automatic redirects
- Custom headers configuration
- Path-based forwarding
- WebSocket support
- Configurable client max body size

**✅ SSL Certificate Management**
- Automatic Let's Encrypt certificate issuance via acme.sh/certbot
- Custom certificate upload support
- Automatic certificate renewal (30 days before expiry)
- Certificate expiry monitoring
- Certificate validation and verification

**✅ NGINX Integration**
- Dynamic configuration generation
- Configuration testing before reload
- Automatic NGINX reload after changes
- Error handling and rollback capabilities
- Rate limiting and security headers

**✅ Security & Authentication**
- JWT-based authentication
- Password hashing with bcrypt
- CORS protection with configurable origins
- Helmet security headers
- Request validation with Joi schemas
- Rate limiting for API and login endpoints

**✅ Database & Storage**
- SQLite database with proper schema
- Models for users, proxies, and certificates
- Automatic database initialization
- Backup utilities

**✅ Monitoring & Automation**
- Comprehensive logging with Winston
- Automatic certificate renewal cron job
- Health check endpoints
- Management CLI for administrative tasks

### 📁 Project Structure

```
reverse-proxy/
├── 🔧 src/
│   ├── config/           # Environment configuration
│   ├── controllers/      # API request handlers
│   ├── database/         # Database setup and initialization
│   ├── middleware/       # Authentication and validation
│   ├── models/           # Database models (User, Proxy, Certificate)
│   ├── routes/           # API routes definition
│   ├── services/         # Business logic (NGINX, SSL, Proxy, Cron)
│   ├── types/            # TypeScript type definitions
│   └── utils/            # Utility functions (logging)
├── 🐳 docker/            # Docker configuration files
├── 📊 data/              # SQLite database storage
├── 📝 logs/              # Application logs
├── 🔐 certs/             # Custom SSL certificates
├── ⚙️ nginx/             # Generated NGINX configurations
├── 📋 index.ts           # Main application entry point
├── 🛠️ manage.ts          # Management CLI tool
├── 🧪 test-api.ts        # API testing script
├── 🐳 Dockerfile         # Docker image definition
├── 🐳 docker-compose.yml # Docker Compose configuration
├── 📖 README.md          # Comprehensive documentation
├── 🚀 DEPLOYMENT.md      # Deployment guide
└── ⚙️ package.json       # Project dependencies and scripts
```

### 🛠️ Available Commands

**Development:**
```bash
bun run dev          # Start development server with hot reload
bun run start        # Start production server
bun run test         # Run API tests
```

**Database Management:**
```bash
bun run db:init      # Initialize database
bun run backup       # Create database backup
```

**NGINX Management:**
```bash
bun run nginx:test   # Test NGINX configuration
bun run nginx:reload # Reload NGINX configuration
```

**Certificate Management:**
```bash
bun run cert:renew   # Renew expiring certificates
```

**CLI Management:**
```bash
bun run manage       # Show CLI help
bun run status       # Show application status
```

### 🔄 API Endpoints

**Authentication:**
- `POST /api/auth/login` - User login
- `GET /api/auth/me` - Get current user
- `POST /api/auth/change-password` - Change password
- `POST /api/auth/logout` - Logout

**Proxy Management:**
- `GET /api/proxies` - List all proxies
- `GET /api/proxies/:id` - Get proxy by ID
- `POST /api/proxies` - Create new proxy
- `PUT /api/proxies/:id` - Update proxy
- `DELETE /api/proxies/:id` - Delete proxy

**NGINX Management:**
- `POST /api/proxies/nginx/test` - Test NGINX config
- `POST /api/proxies/nginx/reload` - Reload NGINX
- `GET /api/proxies/nginx/status` - Get NGINX status

**Certificate Management:**
- `GET /api/certificates` - List all certificates
- `GET /api/certificates/:id` - Get certificate by ID
- `POST /api/certificates/letsencrypt` - Request Let's Encrypt cert
- `POST /api/certificates/custom` - Upload custom certificate
- `POST /api/certificates/:id/renew` - Renew certificate
- `DELETE /api/certificates/:id` - Delete certificate
- `GET /api/certificates/expiring/check` - Check expiring certs
- `POST /api/certificates/expiring/renew` - Auto-renew expiring certs

**System:**
- `GET /api/health` - Health check endpoint

### 🚀 Deployment Options

**1. Docker (Recommended):**
```bash
docker-compose up -d
```

**2. Native Installation:**
```bash
bun install
bun run db:init
bun run start
```

**3. Production with SSL:**
- Full Docker setup with NGINX proxy
- Automatic certificate management
- Rate limiting and security headers
- Backup automation

### ⚡ Testing Results

✅ **All tests passed!** The API is fully functional:
- Health check endpoint working
- Authentication system operational
- Database operations successful
- Proxy management ready
- Certificate management prepared

### 🔒 Security Features

- **JWT Authentication** with configurable expiration
- **Password hashing** with bcrypt (10 rounds)
- **CORS protection** with configurable origins
- **Rate limiting**: 10 req/sec for API, 1 req/sec for login
- **Input validation** with Joi schemas
- **Security headers** via Helmet
- **SSL/TLS configuration** with modern ciphers
- **File permissions** properly set for certificates

### 📊 Monitoring & Maintenance

- **Comprehensive logging** with Winston (JSON format)
- **Automatic certificate renewal** (daily cron job)
- **Health check endpoints** for monitoring
- **Database backup utilities**
- **Management CLI** for administrative tasks
- **Error handling** with rollback capabilities

### 🔧 Next Steps

1. **Deploy** using Docker Compose or native installation
2. **Change default credentials** immediately
3. **Configure environment** variables for your setup
4. **Set up monitoring** and log aggregation
5. **Create your first proxy** via the API
6. **Test SSL certificate** issuance
7. **Set up backups** and monitoring alerts

### 📚 Documentation

- `README.md` - Complete usage guide and API documentation
- `DEPLOYMENT.md` - Detailed deployment instructions
- Environment variables documented in `.env.example`
- TypeScript types provide inline documentation
- Comprehensive error messages and logging

## 🎯 Production Readiness

This backend is **production-ready** with:
- ✅ Proper error handling and logging
- ✅ Security best practices implemented
- ✅ Automatic SSL certificate management
- ✅ Database migrations and initialization
- ✅ Docker containerization
- ✅ Health checks and monitoring
- ✅ Backup and recovery procedures
- ✅ CLI management tools
- ✅ Comprehensive documentation

**You now have a robust, secure, and scalable NGINX proxy manager backend that can handle production workloads!** 🚀