version: "3.9"

services:
  backend:
    build: ./backend
    ports:
      - "8000:8000"
    environment:
      - SECRET_KEY=${SECRET_KEY:?需在 .env 設定 SECRET_KEY，可用 python3 -c "import secrets; print(secrets.token_hex(32))" 產生}
      - DATABASE_URL=sqlite:///./carbon_saas.db
      - ALLOWED_ORIGINS=${ALLOWED_ORIGINS:-http://localhost:3000}
    volumes:
      - ./backend/carbon_saas.db:/app/carbon_saas.db
    restart: unless-stopped

  frontend:
    build: ./frontend
    ports:
      - "3000:3000"
    environment:
      # 所有 API 呼叫皆為 client-side，localhost:8000 指向使用者瀏覽器端的 backend，正確
      - NEXT_PUBLIC_API_URL=http://localhost:8000
    depends_on:
      - backend
    restart: unless-stopped