# Blitz Panel - Docker Setup

## 📋 Prerequisites

- Docker Engine 20.10+
- Docker Compose 2.0+
- At least 2GB RAM
- Ports available: 8000 (API), 443 (Hysteria2), 80 (HTTP)

## 🚀 Quick Start

### 1. Prepare Your Files

Make sure your directory structure looks like this:

```
Blitz/
├── core/
│   └── scripts/
│       ├── auth/
│       ├── db/
│       ├── hysteria2/
│       └── ... (other script folders)
├── api.py
├── cli_api.py
├── requirements.txt
├── Dockerfile
├── docker-compose.yml
└── .dockerignore
```

### 2. Build and Run

```bash
# Build and start containers
docker-compose up -d --build

# Check logs
docker-compose logs -f blitz-api

# Check if services are running
docker-compose ps
```

### 3. Test the API

```bash
# Health check
curl http://localhost:8000/health

# Get API docs (interactive)
open http://localhost:8000/docs
```

## 📚 API Endpoints

### User Management

```bash
# List all users
curl http://localhost:8000/api/v1/users

# Get specific user
curl http://localhost:8000/api/v1/users/john

# Create user
curl -X POST http://localhost:8000/api/v1/users \
  -H "Content-Type: application/json" \
  -d '{
    "username": "john",
    "traffic_limit": 100,
    "expiration_days": 30,
    "unlimited": false
  }'

# Edit user
curl -X PUT http://localhost:8000/api/v1/users/john \
  -H "Content-Type: application/json" \
  -d '{
    "new_traffic_limit": 200,
    "renew_creation_date": true
  }'

# Delete user
curl -X DELETE http://localhost:8000/api/v1/users/john

# Get user URI
curl http://localhost:8000/api/v1/users/john/uri?qrcode=false
```

### Hysteria2 Management

```bash
# Install Hysteria2
curl -X POST http://localhost:8000/api/v1/hysteria2/install \
  -H "Content-Type: application/json" \
  -d '{
    "port": 443,
    "sni": "example.com"
  }'

# Restart Hysteria2
curl -X POST http://localhost:8000/api/v1/hysteria2/restart

# Get current port
curl http://localhost:8000/api/v1/hysteria2/config/port

# Change port
curl -X PUT http://localhost:8000/api/v1/hysteria2/config/port \
  -H "Content-Type: application/json" \
  -d '{"port": 8443}'

# Enable obfuscation
curl -X POST http://localhost:8000/api/v1/hysteria2/obfs/enable
```

### Traffic & Stats

```bash
# Get traffic status
curl http://localhost:8000/api/v1/traffic/status

# Get server info
curl http://localhost:8000/api/v1/info/server

# Get services status
curl http://localhost:8000/api/v1/info/services
```

## 🛠️ Development Mode

To run in development with auto-reload:

```bash
# Run API locally (not in Docker)
source /etc/hysteria/hysteria2_venv/bin/activate
cd /path/to/Blitz
uvicorn api:app --reload --host 0.0.0.0 --port 8000
```

## 🐛 Troubleshooting

### Container won't start

```bash
# Check logs
docker-compose logs blitz-api

# Check MongoDB
docker-compose logs mongodb

# Restart services
docker-compose restart
```

### Permission issues

```bash
# Fix permissions for scripts
docker-compose exec blitz-api bash
find /etc/hysteria/core/scripts -type f -name "*.sh" -exec chmod +x {} \;
find /etc/hysteria/core/scripts -type f -name "*.py" -exec chmod +x {} \;
```

### Network issues

```bash
# Check if ports are available
sudo netstat -tlnp | grep -E ':(8000|443|80)'

# If ports are in use, change them in docker-compose.yml
```

### Reset everything

```bash
# Stop and remove everything
docker-compose down -v

# Remove volumes (WARNING: deletes all data)
docker volume rm blitz_mongodb_data blitz_config blitz_certs

# Rebuild
docker-compose up -d --build
```

## 📊 Monitoring

```bash
# Watch logs in real-time
docker-compose logs -f

# Check resource usage
docker stats

# Execute commands in container
docker-compose exec blitz-api bash
```

## 🔒 Production Deployment

For production, modify `docker-compose.yml`:

1. **Add authentication** to the API (JWT, API keys)
2. **Use HTTPS** with proper SSL certificates
3. **Set up reverse proxy** (nginx/traefik)
4. **Configure firewall** rules
5. **Enable MongoDB authentication**
6. **Set resource limits**

Example production additions:

```yaml
# In docker-compose.yml
services:
  blitz-api:
    deploy:
      resources:
        limits:
          cpus: '2'
          memory: 2G
        reservations:
          cpus: '1'
          memory: 1G
    environment:
      - API_KEY=your-secret-key
```

## 📝 Notes

- Default API runs on port 8000
- MongoDB stores data in named volume `mongodb_data`
- Configs persist in `blitz_config` volume
- All scripts from `core/` are copied into container
- Health check runs every 30 seconds

## 🤝 Common Tasks

### Backup

```bash
# Backup MongoDB data
docker-compose exec mongodb mongodump --out /data/backup

# Copy backup out
docker cp blitz-mongodb:/data/backup ./backup
```

### Update

```bash
# Pull latest code
git pull

# Rebuild
docker-compose up -d --build
```

### Scale

To run multiple instances (load balancing):

```bash
docker-compose up -d --scale blitz-api=3
```

## 🆘 Support

- Check logs: `docker-compose logs -f`
- Interactive docs: http://localhost:8000/docs
- ReDoc: http://localhost:8000/redoc