services:
  mongo:
    image: mongo
    container_name: mongo
    restart: unless-stopped

    # ---------- credentials ----------
    environment:
      MONGO_INITDB_ROOT_USERNAME: ${MONGO_ROOT_USER}
      MONGO_INITDB_ROOT_PASSWORD: ${MONGO_ROOT_PASSWORD}

    # ---------- persistence ----------
    volumes:
      # primary data store
      - mongo_data:/data/db
      # (optional) replica‑set metadata; small but useful to persist
      - mongo_cfg:/data/configdb
      # seed scripts for first‑run init (create users, seed collections, etc.)
      - ./mongo/init:/docker-entrypoint-initdb.d:ro

    # ---------- networking ----------
    # Only published when the 'dev' profile is active
    ports:
      - "${MONGO_PORT}:27017"

    # ---------- basic health check ----------
    healthcheck:
      test: ["CMD", "mongosh", "--quiet", "--eval", "db.adminCommand('ping')"]
      interval: 30s
      timeout: 10s
      retries: 5

# ---------- named volumes ----------
volumes:
  mongo_data:
  mongo_cfg: