# -*- coding: utf-8 -*-
"""一次性脚本：把前端 CDN 资源下载到 public/vendor/，实现完全本地化。"""
import os, re, sys, urllib.request, urllib.parse

ROOT = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
VENDOR = os.path.join(ROOT, "public", "vendor")
os.makedirs(VENDOR, exist_ok=True)

UA = {"User-Agent": "Mozilla/5.0"}

def download(url, dest):
    req = urllib.request.Request(url, headers=UA)
    with urllib.request.urlopen(req, timeout=30) as r:
        data = r.read()
    with open(dest, "wb") as f:
        f.write(data)
    print(f"  {os.path.relpath(dest, ROOT)} ({len(data)} B)")
    return data

def main():
    print("下载 Bootstrap CSS...")
    download(
        "https://cdn.jsdelivr.net/npm/bootstrap@5.3.0/dist/css/bootstrap.min.css",
        os.path.join(VENDOR, "bootstrap.min.css"),
    )

    print("下载 Bootstrap Icons CSS...")
    css = download(
        "https://cdn.jsdelivr.net/npm/bootstrap-icons@1.10.0/font/bootstrap-icons.css",
        os.path.join(VENDOR, "bootstrap-icons.css"),
    ).decode("utf-8", "ignore")

    # 找出字体 url 并本地化
    CSS_URL = "https://cdn.jsdelivr.net/npm/bootstrap-icons@1.10.0/font/bootstrap-icons.css"
    urls = re.findall(r'url\(["\']?([^"\')]+)["\']?\)', css)
    for u in set(urls):
        if u.startswith("data:"):
            continue
        full = urllib.parse.urljoin(CSS_URL, u)
        fname = os.path.basename(full.split("?")[0])
        print(f"下载字体 {fname}...")
        download(full, os.path.join(VENDOR, fname))
        css = css.replace(u, "./" + fname)

    with open(os.path.join(VENDOR, "bootstrap-icons.css"), "w", encoding="utf-8") as f:
        f.write(css)
    print("  已重写 bootstrap-icons.css 字体路径")

    print("下载 SortableJS...")
    download(
        "https://cdn.jsdelivr.net/npm/sortablejs@1.15.0/Sortable.min.js",
        os.path.join(VENDOR, "Sortable.min.js"),
    )

    print("\n完成。vendor 目录:")
    for f in sorted(os.listdir(VENDOR)):
        print("  ", f)

if __name__ == "__main__":
    main()