services:
  postgres:
    image: postgres:16-alpine
    environment:
      POSTGRES_USER: lct
      POSTGRES_PASSWORD: lct
      POSTGRES_DB: lct
    ports: ["5432:5432"]
    volumes: ["pgdata:/var/lib/postgresql/data"]
    healthcheck:
      test: ["CMD-SHELL", "pg_isready -U lct"]
      interval: 5s
      timeout: 3s
      retries: 10

  backend:
    build: ./backend
    # Один воркер принципиально: состояние живой сессии и реестр наблюдателей
    # живут в памяти процесса (docs/arch/STACK.md).
    command: uvicorn app.main:app --host 0.0.0.0 --port 8000 --reload --workers 1
    environment:
      DATABASE_URL: postgresql+asyncpg://lct:lct@postgres:5432/lct
    volumes:
      - ./backend:/app
      - ./scenarios:/scenarios:ro
    ports: ["8000:8000"]
    depends_on:
      postgres:
        condition: service_healthy

  frontend:
    build: ./frontend
    command: npm run dev -- --host 0.0.0.0
    volumes:
      - ./frontend:/app
      - /app/node_modules
    ports: ["5173:5173"]
    depends_on: [backend]

volumes:
  pgdata: