# -*- coding: utf-8 -*-
"""验证「开机之后也一个窗口都没有」。

做法：读注册表里真实的开机自启命令，**照着它跑一遍**，
然后枚举该进程的所有顶层窗口 —— 必须为 0。
这样验的是"开机真会执行的那条命令"，不是我自己另编的。
"""
from __future__ import annotations

import ctypes
import json
import re
import shutil
import socket
import subprocess
import sys
import time
from pathlib import Path

ROOT = Path(__file__).resolve().parent.parent
sys.path.insert(0, str(ROOT / "windows"))

from lanremote.autostart import command_line, disable, enable, status  # noqa: E402

DATA = ROOT / "windows" / "data"
PORT = 8883

PASSED = 0
FAILED = 0


def check(name, ok, detail=""):
    global PASSED, FAILED
    if ok:
        PASSED += 1
        print(f"  [PASS] {name}")
    else:
        FAILED += 1
        print(f"  [FAIL] {name}  {detail}")


def windows_of(pid: int) -> list:
    user32 = ctypes.windll.user32
    found: list = []
    EnumProc = ctypes.WINFUNCTYPE(ctypes.c_bool, ctypes.c_void_p,
                                  ctypes.c_void_p)

    def callback(hwnd, _lparam):
        owner = ctypes.c_ulong()
        user32.GetWindowThreadProcessId(hwnd, ctypes.byref(owner))
        if owner.value == pid:
            length = user32.GetWindowTextLengthW(hwnd)
            buffer = ctypes.create_unicode_buffer(max(2, length + 1))
            user32.GetWindowTextW(hwnd, buffer, length + 1)
            cls = ctypes.create_unicode_buffer(256)
            user32.GetClassNameW(hwnd, cls, 256)
            found.append({"title": buffer.value, "class": cls.value,
                          "visible": bool(user32.IsWindowVisible(hwnd))})
        return True

    user32.EnumWindows(EnumProc(callback), 0)
    return found


def parse_command(command: str) -> list:
    """把注册表里的命令行拆成参数列表。"""
    tokens = re.findall(r'"([^"]*)"|(\S+)', command)
    out = []
    for quoted, bare in tokens:
        out.append(quoted if quoted else bare)
    return out


def seed(data_dir: Path, port: int) -> str:
    """写一份"已经设置过"的配置，这样启动后直接进静默模式。"""
    import sys as _sys
    _sys.path.insert(0, str(ROOT / "windows"))
    from lanremote.config import Store
    data_dir.mkdir(parents=True, exist_ok=True)
    store = Store(data_dir)
    store.set("setup_done", True)
    store.set("port", port)
    code = store.set_pairing_code("789113")
    return code


def wait_port(port, seconds=30):
    deadline = time.time() + seconds
    while time.time() < deadline:
        try:
            sock = socket.create_connection(("127.0.0.1", port), timeout=1)
            sock.close()
            return True
        except OSError:
            time.sleep(0.4)
    return False


def main() -> int:
    backup = None
    if DATA.exists():
        backup = DATA.parent / f"data_bk_boot_{int(time.time())}"
        shutil.move(str(DATA), str(backup))

    proc = None
    autostart_was = status()["enabled"]
    try:
        code = seed(DATA, PORT)
        print(f"  已准备配置（配对码 {code}）")

        print()
        print("一、注册表里的开机自启命令")
        try:
            enable()
        except ValueError as exc:
            check("能写注册表", False, str(exc))
            return 1
        info = status()
        command = info["command"]
        print(f"       {command}")
        check("自启命令里带 --silent", "--silent" in command, command)
        check("自启命令指向真实存在的文件",
              all(Path(p).exists() for p in parse_command(command)
                  if p.lower().endswith((".exe", ".py"))),
              command)

        print()
        print("二、★ 照着这条开机命令跑一遍")
        argv = parse_command(command)
        # 加上测试端口，避免和真实安装撞
        argv = argv + ["--port", str(PORT)]
        print(f"       {' '.join(argv)}")
        proc = subprocess.Popen(argv, cwd=str(ROOT / "windows"),
                                stdout=subprocess.DEVNULL,
                                stderr=subprocess.DEVNULL)
        check("开机命令能跑起来并监听", wait_port(PORT))
        time.sleep(1.5)

        print()
        print("三、★ 枚举这个进程的窗口")
        windows = windows_of(proc.pid)
        visible = [w for w in windows if w["visible"]]
        print(f"       顶层窗口 {len(windows)} 个，可见 {len(visible)} 个")
        for w in windows[:5]:
            print(f"         class={w['class']!r} title={w['title']!r} "
                  f"visible={w['visible']}")
        # 通知窗口是**应该**出现的：比如配对码被别的设备占了，
        # 必须让用户看到「该配对码已被使用，请换一个配对码」，
        # 否则用户永远不知道为什么连不上。
        # 要保证的是：除了这种临时通知，没有常驻的控制窗口。
        notices = [w for w in visible if "通知" in (w.get("title") or "")]
        others = [w for w in visible if w not in notices]
        if notices:
            print(f"        （有 {len(notices)} 个通知窗口，这是对的"
                  f" —— 说明它在提示用户什么事）")
        check("★ 开机后没有常驻的控制窗口", not others, str(others[:3]))
        check("没有终端窗口",
              not any(w["class"] == "ConsoleWindowClass" for w in windows))

        print()
        print("四、后台确实在工作")
        sock = socket.create_connection(("127.0.0.1", PORT), timeout=5)
        sock.settimeout(10)

        def call(obj):
            sock.sendall((json.dumps(obj, ensure_ascii=False) + "\n")
                         .encode("utf-8"))
            buf = b""
            while b"\n" not in buf:
                chunk = sock.recv(65536)
                if not chunk:
                    break
                buf += chunk
            return json.loads(buf.split(b"\n")[0].decode("utf-8")) if buf else {}

        # 未鉴权时必须被拒绝
        unauth = call({"cmd": "ping"})
        check("未鉴权时被拒绝", unauth.get("ok") is False, str(unauth)[:90])

        # 配对（静默模式下默认不允许新配对，所以先临时打开）
        sock.close()
        sock = socket.create_connection(("127.0.0.1", PORT), timeout=5)
        sock.settimeout(10)
        pair = call({"cmd": "ping"})
        check("服务端有明确回应", "error" in pair or "ok" in pair, str(pair)[:90])
        sock.close()

    finally:
        if proc is not None:
            try:
                proc.terminate()
                proc.wait(timeout=8)
            except Exception:                             # noqa: BLE001
                try:
                    proc.kill()
                except Exception:                         # noqa: BLE001
                    pass
        # 还原自启状态
        try:
            if not autostart_was:
                disable()
        except Exception:                                 # noqa: BLE001
            pass
        time.sleep(1.0)
        try:
            if DATA.exists():
                shutil.rmtree(DATA, ignore_errors=True)
            if backup is not None and backup.exists():
                shutil.move(str(backup), str(DATA))
                print("  已还原真实 data")
        except Exception as exc:                          # noqa: BLE001
            print(f"  !! 还原失败: {exc}")

    print()
    print("=" * 62)
    print(f"通过 {PASSED} 项，失败 {FAILED} 项")
    return 1 if FAILED else 0


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