# -*- coding: utf-8 -*-
"""生成「网络自检.bat」—— 纯 ASCII，彻底避开编码坑。

真机问题：双击后中文全是乱码。
根因：.bat 用 GBK 存盘 + chcp 936，但用户机器上控制台代码页并不是 936
      （可能开了「Beta: 使用 UTF-8 提供全球语言支持」），
      于是 bat 自己的中文和 Python 的输出都花了。

彻底方案：
  * **bat 里一个中文都不留**（纯 ASCII），只负责设 UTF-8 代码页并调用 Python
  * 中文全部交给 Python 输出，Python 自己把控制台设成 65001
  * 脚本名用通配符找（*.py），这样中文文件名也不影响纯 ASCII 的 bat

这样无论系统默认代码页是什么都不会乱。
"""
from __future__ import annotations

import sys
from pathlib import Path

LINES = [
    "@echo off",
    "chcp 65001 >nul 2>nul",
    "title LAN Remote - Network Self Check",
    'cd /d "%~dp0"',
    "",
    "set \"PY=\"",
    "where python >nul 2>nul && set \"PY=python\"",
    'if not defined PY where py >nul 2>nul && set "PY=py"',
    "if not defined PY goto NOPY",
    "",
    "rem Find the single .py next to this file (its name may be Chinese,",
    "rem which would break this pure-ASCII launcher if hard-coded).",
    'set "SCRIPT="',
    'for %%f in ("%~dp0*.py") do if not defined SCRIPT set "SCRIPT=%%~ff"',
    "if not defined SCRIPT goto NOFILE",
    "",
    "%PY% \"%SCRIPT%\"",
    "goto END",
    "",
    ":NOPY",
    "echo.",
    "echo   [ERROR] Python not found (neither python nor py on PATH).",
    "echo.",
    "echo   The self-check needs Python.  Usually you do not need it -",
    "echo   use the Toolbox instead:",
    "echo       1  Start agent",
    "echo       2  Fix firewall",
    "echo.",
    "goto END",
    "",
    ":NOFILE",
    "echo.",
    "echo   [ERROR] No .py script found next to this .bat.",
    "echo.",
    "",
    ":END",
    "echo.",
    "pause",
]


def main() -> int:
    target = Path(r"C:\Users\shu\Desktop\deepseekagent\LanRemote\tools\网络自检.bat")
    target.parent.mkdir(parents=True, exist_ok=True)
    with open(target, "w", encoding="ascii", newline="\r\n") as handle:
        handle.write("\n".join(LINES) + "\n")

    data = target.read_bytes()
    crlf = data.count(b"\r\n")
    lone = data.count(b"\n") - crlf
    try:
        data.decode("ascii")
        ascii_ok = True
    except UnicodeDecodeError:
        ascii_ok = False

    print(f"  路径: {target}")
    print(f"  大小: {len(data)} 字节   CRLF={crlf}  裸LF={lone}   纯ASCII={ascii_ok}")

    problems = []
    if lone:
        problems.append("存在裸 LF")
    if not ascii_ok:
        problems.append("含非 ASCII 字符")
    if not any(b"*.py" in line for line in [data]):
        problems.append("没有用通配符找 .py")
    if problems:
        for item in problems:
            print(f"  [失败] {item}")
        return 1
    print("  自检: 通过")
    return 0


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