"""图片请求头构建（Cookie 由 extension_cookies 在失败时补充）。"""

from __future__ import annotations


def normalize_image_url(url: str) -> str:
    url = (url or "").strip()
    if url.startswith("//"):
        return "https:" + url
    return url


def image_request_headers(
    *,
    cookie_header: str | None = None,
    accept: str = "image/avif,image/webp,image/apng,image/*,*/*;q=0.8",
) -> dict[str, str]:
    from xhs_bridge.browser_profile import build_browser_headers, resolve_profile_for_request
    from xhs_bridge.config import load_config

    profile = resolve_profile_for_request(load_config())
    return build_browser_headers(
        profile=profile,
        cookie_header=cookie_header or None,
        with_cookie=False,
        accept=accept,
        extra={
            "Sec-Fetch-Dest": "image",
            "Sec-Fetch-Mode": "no-cors",
            "Sec-Fetch-Site": "cross-site",
        },
    )