# Deployment Runbook — ERP Nutzfahrzeuge

---

## Prerequisites

1. **PostgreSQL** — running and accessible (managed or self-hosted)
2. **Redis** (optional) — if async features (OCR, retouch, mobile.de push) are needed
3. **Node.js** — for frontend build (if building at deploy time)
4. **Python 3.11+** — for backend runtime
5. **Coolify** (or Docker) — for containerized deployment

---

## Pre-Deployment Steps

### 1. Verify Environment Variables

Ensure all required variables are configured in Coolify or `.env`:

```bash
# Required
DATABASE_URL=postgresql+asyncpg://<user>:<password>@<host>:5432/<dbname>
JWT_SECRET=<generate with: openssl rand -hex 32>

# Important
APP_ENV=production
CORS_ORIGINS=https://your-frontend-domain.com
UPLOAD_DIR=/app/uploads  # persistent volume

# Optional (feature-dependent)
REDIS_URL=redis://<host>:6379/0
OPENROUTER_API_KEY=<key>
MOBILE_DE_API_KEY=<key>
MOBILE_DE_SELLER_ID=<id>
```

### 2. Build Frontend

```bash
cd frontend
npm ci
npm run build
```

Build artifacts are output to `frontend/.next/`.

### 3. Verify Backend Dependencies

```bash
cd backend
/opt/venv/bin/pip install -r requirements.txt
/opt/venv/bin/python -c "from app.main import app; print('Import OK')"
```

### 4. Database Migration (if applicable)

```bash
cd backend
/opt/venv/bin/python -m alembic upgrade head  # if Alembic is configured
# Or ensure tables are created via app startup
```

---

## Deployment Steps (Coolify)

### Step 1: Create Resource

1. In Coolify, create a new resource (Docker Compose or Dockerfile-based)
2. Configure the source repository
3. Set the build/pack type

### Step 2: Configure Environment

1. Navigate to resource → Environment Variables
2. Add all variables from `deploy/env.md`
3. Ensure `JWT_SECRET` is a secure random value
4. Set `APP_ENV=production`

### Step 3: Configure Health Check

1. Set health check path to `/api/v1/health`
2. Set port to `8000`
3. See `deploy/healthcheck.md` for full configuration

### Step 4: Configure Persistent Storage

1. Mount a persistent volume for `UPLOAD_DIR` (e.g., `/app/uploads`)
2. Ensure database volume is persistent

### Step 5: Deploy

1. Click **Deploy** in Coolify
2. Wait for build and startup to complete
3. Verify health check passes (green status)
4. Test endpoints:
   - `GET /api/v1/health` → 200 `{"status":"ok"}`
   - `GET /` → 200 app metadata
   - `GET /openapi.json` → 200 OpenAPI schema

### Step 6: Post-Deployment Verification

1. Verify frontend is accessible at the configured domain
2. Test login flow: `POST /api/v1/auth/login` with valid credentials
3. Verify CORS headers are present for frontend origin
4. Check logs for any errors:
   ```bash
   docker logs <container_name> --tail 50
   ```

---

## Deployment Steps (Docker Compose)

### docker-compose.yml (template)

```yaml
version: '3.8'

services:
  backend:
    build: ./backend
    ports:
      - "8000:8000"
    environment:
      - DATABASE_URL=postgresql+asyncpg://user:pass@db:5432/erp
      - JWT_SECRET=${JWT_SECRET}
      - APP_ENV=production
      - CORS_ORIGINS=https://your-domain.com
      - UPLOAD_DIR=/app/uploads
      - REDIS_URL=redis://redis:6379/0
    volumes:
      - uploads:/app/uploads
    depends_on:
      - db
      - redis
    healthcheck:
      test: ["CMD", "curl", "-f", "http://localhost:8000/api/v1/health"]
      interval: 30s
      timeout: 5s
      retries: 3
      start_period: 10s

  db:
    image: postgres:16-alpine
    environment:
      - POSTGRES_USER=erp_user
      - POSTGRES_PASSWORD=${DB_PASSWORD}
      - POSTGRES_DB=erp
    volumes:
      - pgdata:/var/lib/postgresql/data

  redis:
    image: redis:7-alpine
    volumes:
      - redisdata:/data

  frontend:
    build: ./frontend
    ports:
      - "3000:3000"
    depends_on:
      - backend

volumes:
  uploads:
  pgdata:
  redisdata:
```

---

## Start Command (standalone)

```bash
cd backend && /opt/venv/bin/python -m uvicorn app.main:app --host 0.0.0.0 --port 8000
```

For production with workers:
```bash
cd backend && /opt/venv/bin/python -m uvicorn app.main:app --host 0.0.0.0 --port 8000 --workers 4
```

---

## Rollback

See `deploy/rollback.md` for rollback procedure.