# -*- coding: utf-8 -*-
"""量出管理页在 420px 下到底是哪个元素越界。

关键：用 --dump-dom + --virtual-time-budget 等脚本跑完，
     并把结果写进 DOM（而不是 title，title 容易被 dump 时机坑）。
"""
from __future__ import annotations

import http.cookiejar
import json
import os
import re
import shutil
import subprocess
import sys
import tempfile
import time
import urllib.error
import urllib.parse
import urllib.request
from pathlib import Path


# ⚠ 不再把密码写死在脚本里（这个仓库是公开的）。
# 从环境变量或 _build/.admin_password（已 gitignore）读，读不到就报错。
def _admin_password() -> str:
    import os
    env = os.environ.get("YKXMZ_ADMIN_PASSWORD", "").strip()
    if env:
        return env
    f = Path(__file__).resolve().parent / ".admin_password"
    if f.is_file():
        return f.read_text(encoding="utf-8").strip()
    raise SystemExit(
        "没拿到管理密码：设 YKXMZ_ADMIN_PASSWORD，或写 _build/.admin_password")


ROOT = Path(__file__).resolve().parent.parent
UA = {"User-Agent": "LanRemote/1.4.0"}
PORT = 8112
BASE = f"http://127.0.0.1:{PORT}"

EDGE = next((p for p in (
    Path(r"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"),
    Path(r"C:\Program Files\Microsoft\Edge\Application\msedge.exe"))
    if p.is_file()), None)

PROBE = """
<div id="__probe" style="display:none"></div>
<script>
(function () {
  var out = [];
  var vw = document.documentElement.clientWidth;
  out.push('viewport=' + vw + ' body.scrollWidth=' + document.body.scrollWidth);
  var all = document.querySelectorAll('*');
  for (var i = 0; i < all.length; i++) {
    var el = all[i];
    var r = el.getBoundingClientRect();
    if (r.right > vw + 0.5 || r.width > vw + 0.5) {
      var cls = el.className ? ('.' + String(el.className).trim()
                                .replace(/\\s+/g, '.')) : '';
      out.push('OVERFLOW w=' + Math.round(r.width)
        + ' right=' + Math.round(r.right)
        + ' <' + el.tagName.toLowerCase() + cls + '>'
        + ' parent=<' + (el.parentElement
             ? el.parentElement.tagName.toLowerCase() : '?') + '>');
    }
  }
  document.getElementById('__probe').textContent = out.slice(0, 25).join(' ||| ');
})();
</script>
"""


def main() -> int:
    work = Path(tempfile.mkdtemp(prefix="admin_probe2_"))
    relay = None
    try:
        data = work / "d"
        data.mkdir(parents=True, exist_ok=True)
        env = dict(os.environ)
        env.update({"RELAY_PORT": str(PORT), "RELAY_BIND": "127.0.0.1",
                    "RELAY_DATA": str(data),
                    "PYTHONIOENCODING": "utf-8", "PYTHONUNBUFFERED": "1"})
        relay = subprocess.Popen(
            [sys.executable, "-u", str(ROOT / "relay" / "relay.py")], env=env,
            stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL)
        for _ in range(40):
            time.sleep(0.5)
            try:
                urllib.request.urlopen(urllib.request.Request(
                    BASE + "/v1/health", headers=UA), timeout=2)
                break
            except Exception:                             # noqa: BLE001
                continue

        for index, (name, code) in enumerate(
                [("书房台式机", "482913"), ("笔记本", "771204")], start=1):
            body = json.dumps({"deviceId": f"pc-{index}", "code": code,
                               "name": name, "version": "1.4.0"}).encode()
            urllib.request.urlopen(urllib.request.Request(
                BASE + "/v1/agent/register", data=body, method="POST",
                headers={**UA, "Content-Type": "application/json"}),
                timeout=10).read()

        jar = http.cookiejar.CookieJar()
        opener = urllib.request.build_opener(
            urllib.request.HTTPCookieProcessor(jar))
        form = urllib.parse.urlencode({"password": _admin_password()}).encode()
        req = urllib.request.Request(BASE + "/admin/login", data=form,
                                     method="POST", headers=UA)
        req.add_header("Content-Type", "application/x-www-form-urlencoded")
        try:
            opener.open(req, timeout=15).read()
        except urllib.error.HTTPError:
            pass

        html = opener.open(urllib.request.Request(BASE + "/", headers=UA),
                           timeout=15).read().decode("utf-8")
        html = html.replace("</html>", PROBE + "</html>")
        page = work / "probe.html"
        page.write_text(html, encoding="utf-8")

        if not EDGE:
            print("  没找到 Edge")
            return 1

        proc = subprocess.run(
            [str(EDGE), "--headless=new", "--disable-gpu", "--hide-scrollbars",
             "--window-size=420,1000", "--virtual-time-budget=6000",
             "--dump-dom", page.as_uri()],
            capture_output=True, text=True, encoding="utf-8",
            errors="replace", timeout=120)
        dom = proc.stdout or ""
        match = re.search(
            r'<div id="__probe"[^>]*>(.*?)</div>', dom, re.S)
        if not match or not match.group(1).strip():
            print("  探针没输出。DOM 长度", len(dom))
            return 1
        for part in match.group(1).split("|||"):
            print("  " + part.strip()[:160])
        return 0
    finally:
        if relay is not None:
            try:
                relay.terminate()
                relay.wait(timeout=8)
            except Exception:                             # noqa: BLE001
                try:
                    relay.kill()
                except Exception:                     # noqa: BLE001
                    pass
        time.sleep(0.5)
        shutil.rmtree(work, ignore_errors=True)


if __name__ == "__main__":
    sys.exit(main())