version: "3.9"

services:

  # ── FastAPI backend ────────────────────────────────────────────────────────
  backend:
    build:
      context: ./backend
      dockerfile: Dockerfile
    ports:
      - "8000:8000"
    env_file:
      - ./backend/.env
    environment:
      - PYTHONUNBUFFERED=1
      - UVICORN_WORKERS=4
    restart: unless-stopped
    healthcheck:
      test: ["CMD", "curl", "-f", "http://localhost:8000/health"]
      interval: 15s
      timeout: 5s
      retries: 3

  # ── Vite frontend (dev) ────────────────────────────────────────────────────
  frontend:
    image: node:20-alpine
    working_dir: /app
    volumes:
      - ./frontend:/app
    ports:
      - "3000:3000"
    environment:
      - VITE_WS_URL=ws://backend:8000/ws
    command: sh -c "npm install && npm run dev"
    depends_on:
      - backend
    restart: unless-stopped

  # ── Nginx reverse proxy (production) ──────────────────────────────────────
  # Uncomment for production; proxies /ws → backend, / → frontend dist
  # nginx:
  #   image: nginx:alpine
  #   ports:
  #     - "80:80"
  #   volumes:
  #     - ./nginx.conf:/etc/nginx/conf.d/default.conf:ro
  #     - ./frontend/dist:/usr/share/nginx/html:ro
  #   depends_on:
  #     - backend