# -*- coding: utf-8 -*-
"""把新的中转管理页渲染出来并截图。

做法：
    起一个本地中转 -> 造两台测试设备 -> 登录拿 Cookie
    -> 抓管理页 HTML -> 存成文件
    -> 用 Edge 无头模式截图
（存成文件后 JS 调接口会失败，但看清楚界面长什么样足够了。）
"""
from __future__ import annotations

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

ROOT = Path(__file__).resolve().parent.parent
UA = {"User-Agent": "LanRemote/1.4.0"}
PORT = 8110
BASE = f"http://127.0.0.1:{PORT}"

EDGE_CANDIDATES = [
    Path(r"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"),
    Path(r"C:\Program Files\Microsoft\Edge\Application\msedge.exe"),
]


def main() -> int:
    work = Path(tempfile.mkdtemp(prefix="admin_shot_"))
    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

        # 造几台设备，其中一台"在线"
        for index, (name, code) in enumerate(
                [("书房台式机", "482913"), ("笔记本", "771204"),
                 ("办公电脑", "356180")], 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": "120830"}).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")
        page = work / "admin.html"
        page.write_text(html, encoding="utf-8")

        # 关键元素检查
        print("  页面检查：")
        for label, needle in (
                ("退出登录", "退出登录"),
                ("公网地址卡片", "当前公网地址"),
                ("复制按钮", 'id=copyUrl'),
                ("统计卡片", 'class=stat'),
                ("批量删除按钮", 'id=delPicked'),
                ("全选", 'id=pickAll'),
                ("自动刷新", 'id=autoRef'),
                ("每行复选框", 'class=pick value'),
                ("空状态/表格", "<table>")):
            print(f"    {'✓' if needle in html else '✗'} {label}")
        print(f"  页面大小 {len(html)} 字节")

        edge = next((p for p in EDGE_CANDIDATES if p.is_file()), None)
        if not edge:
            print("  没找到 Edge，跳过截图")
            print(f"  HTML 已存到 {page}")
            return 0

        shot = ROOT / "_build" / "admin_preview.png"
        cmd = [str(edge), "--headless=new", "--disable-gpu",
               "--hide-scrollbars", "--force-device-scale-factor=1",
               "--window-size=1180,940",
               f"--screenshot={shot}", page.as_uri()]
        proc = subprocess.run(cmd, capture_output=True, text=True,
                              encoding="utf-8", errors="replace", timeout=90)
        if shot.is_file():
            print(f"  截图: {shot}  {shot.stat().st_size // 1024} KB")
        else:
            print(f"  截图失败: {proc.stderr[:200]}")

        # 顺手截一张窄屏（手机）效果
        shot2 = ROOT / "_build" / "admin_preview_mobile.png"
        cmd2 = [str(edge), "--headless=new", "--disable-gpu",
                "--hide-scrollbars", "--force-device-scale-factor=1",
                "--window-size=420,1100",
                f"--screenshot={shot2}", page.as_uri()]
        subprocess.run(cmd2, capture_output=True, text=True,
                       encoding="utf-8", errors="replace", timeout=90)
        if shot2.is_file():
            print(f"  窄屏截图: {shot2}  {shot2.stat().st_size // 1024} KB")
        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())