"""路由层透传信息提取：投顾 JWT 与 trace_id（供 Agent 客户端透传）。"""
from __future__ import annotations

from fastapi import Request

from utils.request_id import get_request_id, new_request_id


def extract_auth(request: Request) -> tuple[str, str]:
    """返回 (Authorization 头原值, trace_id)；trace_id 优先透传，无则生成。"""
    auth = request.headers.get("Authorization", "")
    trace_id = request.headers.get("X-Trace-Id") or get_request_id() or new_request_id()
    return auth, trace_id