# CoopCredits Infrastructure Documentation

## Network Architecture

```
┌─────────────────────────────────────────────────────────────────────────┐
│                          External Access                                  │
│                        coop.hobokenchicken.com                            │
└─────────────────────────────────┬───────────────────────────────────────┘
                                  │ HTTPS (443)
                                  ▼
┌─────────────────────────────────────────────────────────────────────────┐
│                           CoopCredits Server                              │
│  ┌──────────────┐  ┌──────────────┐  ┌──────────────┐  ┌──────────────┐  │
│  │    Nginx     │  │   Frontend   │  │    Backend   │  │  PostgreSQL  │  │
│  │   (80/443)   │──│  (Next.js)   │──│  (Express)   │──│   (5432)     │  │
│  └──────────────┘  └──────────────┘  └──────┬───────┘  └──────────────┘  │
│                                              │                           │
│  ┌──────────────┐  ┌──────────────┐         │          ┌──────────────┐  │
│  │   Certbot    │  │    Redis     │◀────────┘          │  Anchor CLI  │  │
│  │   (SSL)      │  │   (6379)     │                     │ (Optional)   │  │
│  └──────────────┘  └──────────────┘                     └──────────────┘  │
└──────────────────────────────────┬──────────────────────────────────────┘
                                   │
                                   │ Local Network (172.20.1.0/24)
        ┌──────────────────────────┼──────────────────────────┐
        │                          │                          │
        ▼                          ▼                          ▼
┌──────────────┐          ┌──────────────┐          ┌──────────────┐
│     Plex     │          │   Tautulli   │          │   Overseer   │
│172.20.1.220  │          │172.20.1.255  │          │172.20.1.225  │
│  :32400      │          │   :8181      │          │   :5055      │
└──────────────┘          └──────────────┘          └──────────────┘
```

## Service Details

### Plex Server (172.20.1.220:32400)
- **Purpose**: Content streaming and user authentication
- **Integration**: OAuth authentication for website login
- **Access**: HTTP on local network, may have remote access enabled

### Tautulli (172.20.1.255:8181)
- **Purpose**: Plex analytics and watch event tracking
- **Integration**: Webhook notifications to CoopCredits backend
- **Access**: HTTP on local network
- **API Key**: Required for backend queries

### Overseer (172.20.1.225:5055)
- **Purpose**: Content request management
- **Integration**: API for requesting content, webhooks for status updates
- **Access**: HTTP on local network
- **API Key**: Required for backend integration

### CoopCredits Server
- **Public Access**: coop.hobokenchicken.com (HTTPS)
- **Internal Services**: Only accessible via Nginx reverse proxy
- **Database**: PostgreSQL on localhost only
- **Cache**: Redis on localhost only

## Communication Flow

### 1. User Authentication
```
User → Nginx → Frontend → Backend → Plex OAuth (172.20.1.220:32400)
                                           ↓
                              User authenticated, JWT issued
```

### 2. Watch Event Processing
```
Plex → Tautulli → Webhook → Nginx → Backend → Solana Devnet
                                ↓
                         Database updated
                                ↓
                         WebSocket → User notified
```

### 3. Content Request
```
User → Nginx → Frontend → Backend → Overseer API (172.20.1.225:5055)
                                          ↓
                              Request created, $COOP reserved
                                          ↓
                              Webhook on approval → Burn $COOP
```

## Security Considerations

### Network Security
1. **Local Network**: All services communicate over HTTP (trusted network)
2. **External Access**: Only Nginx exposed (ports 80/443)
3. **Internal Services**: Not accessible from external network

### API Security
1. **Tautulli Webhook**: Secret verification recommended
2. **Overseer API**: API key authentication
3. **Plex OAuth**: Standard OAuth 2.0 flow
4. **JWT**: Secure tokens for session management

### Data Security
1. **Wallet Keys**: Encrypted with AES-256-GCM in database
2. **Database**: Not exposed externally
3. **Redis**: Password protected, localhost only

## Firewall Configuration

```bash
# Web traffic
sudo ufw allow 80/tcp
sudo ufw allow 443/tcp

# Internal service access (from Docker containers)
sudo ufw allow from 172.20.0.0/16 to 172.20.1.0/24

# Block external access to internal services
sudo ufw deny 3000/tcp    # Frontend
sudo ufw deny 3001/tcp    # Backend
sudo ufw deny 5432/tcp    # PostgreSQL
sudo ufw deny 6379/tcp    # Redis
```

## Docker Network Configuration

### Internal Network (coop-internal)
- Containers can communicate with each other
- Isolated from external network
- Used for: frontend ↔ backend ↔ database

### External Network (coop-external)
- Allows containers to reach local services
- Subnet: 172.20.2.0/24
- Used for: backend → Tautulli/Overseer/Plex

## SSL/TLS Setup

### Let's Encrypt (Recommended)
```bash
# Initial certificate
docker-compose -f docker-compose.prod.yml run --rm certbot certonly \
  --webroot -w /var/www/certbot \
  -d coop.hobokenchicken.com \
  --agree-tos --no-eff-email

# Auto-renewal (configured in docker-compose)
```

### Self-Signed (Testing only)
```bash
openssl req -x509 -nodes -days 365 -newkey rsa:2048 \
  -keyout docker/nginx/ssl/key.pem \
  -out docker/nginx/ssl/cert.pem \
  -subj '/CN=coop.hobokenchicken.com'
```

## Monitoring and Logging

### Log Locations
- Nginx: `docker/nginx/logs/`
- Backend: Docker logs (`docker-compose logs backend`)
- Frontend: Docker logs (`docker-compose logs frontend`)
- Database: Inside container (`/var/log/postgresql/`)

### Health Checks
```bash
# Backend health
curl https://coop.hobokenchicken.com/health

# Database connection
docker-compose exec postgres pg_isready -U coop

# Service status
docker-compose ps
```

## Troubleshooting

### Cannot reach local services
1. Check Docker network: `docker network inspect coop-credits_coop-external`
2. Verify IP connectivity: `docker exec coop-backend ping 172.20.1.255`
3. Check firewall rules: `sudo ufw status`

### Webhook not received
1. Verify Tautulli can reach CoopCredits:
   ```bash
   curl -X POST https://coop.hobokenchicken.com/webhooks/tautulli \
     -H "Content-Type: application/json" \
     -d '{"test": true}'
   ```
2. Check Nginx logs: `tail -f docker/nginx/logs/access.log`
3. Check backend logs: `docker-compose logs -f backend`

### CORS errors
1. Verify CORS_ORIGINS in .env includes your domain
2. Check backend is sending correct headers
3. Nginx should pass through CORS headers

## Performance Optimization

### Nginx Tuning
- `worker_processes auto` - Use all CPU cores
- `worker_connections 1024` - High connection limit
- `gzip on` - Compress responses
- `proxy_cache` - Cache static assets

### Database Tuning
- Connection pooling via Prisma
- Redis for session caching
- Indexed queries on user_id, created_at

### Frontend Optimization
- Next.js static generation where possible
- Image optimization
- Code splitting

## Backup and Recovery

### Database Backup
```bash
# Automated backup script
docker-compose exec -T postgres pg_dump -U coop coop_credits > backup_$(date +%Y%m%d).sql
```

### Wallet Recovery
- Private keys are encrypted in database
- Backup keys stored securely (encrypted)
- Recovery requires encryption key from .env

### Configuration Backup
- `.env` file (contains all secrets)
- `docker/nginx/ssl/` certificates
- `docker-compose.prod.yml` service config