# -*- coding: utf-8 -*-
"""投图窗口按「外框」在「工作区」里居中。

原来的写法：
    x = (winfo_screenwidth()  - width)  // 2
    y = (winfo_screenheight() - height) // 2
    win.geometry(f"{width}x{height}+{x}+{y}")

两个问题：
  1. winfo_reqwidth/height 是**客户区**尺寸，真正的窗口还带标题栏和边框，
     所以外框会往下多出一截，看起来不是居中。
  2. 用的是整屏高度，没扣任务栏 —— 任务栏常显时窗口会被挤下去。

改成：先量出真实外框，再在工作区（扣掉任务栏）里居中。
"""
from __future__ import annotations

import sys
from pathlib import Path

ACTIONS = Path(r"C:\Users\shu\Desktop\deepseekagent\LanRemote\windows"
               r"\lanremote\actions.py")

OLD = '''                # 摆到屏幕正中间 —— 普通窗口，有标题栏和关闭按钮
                win.update_idletasks()
                width = win.winfo_reqwidth()
                height = win.winfo_reqheight()
                x = max(0, (win.winfo_screenwidth() - width) // 2)
                y = max(0, (win.winfo_screenheight() - height) // 2)
                win.geometry(f"{width}x{height}+{x}+{y}")
                win.lift()
                win.focus_force()'''

NEW = '''                # 摆到屏幕正中间 —— 普通窗口，有标题栏和关闭按钮
                _place_centered(win, win.winfo_reqwidth(),
                                win.winfo_reqheight())'''

HELPER_ANCHOR = "class Actions:"

HELPER = '''def work_area() -> tuple:
    """屏幕工作区 (left, top, width, height) —— 已经扣掉任务栏。

    直接读 SPI_GETWORKAREA，比自己猜任务栏多高靠谱。
    """
    try:
        import ctypes.wintypes
        rect = ctypes.wintypes.RECT()
        ok = ctypes.windll.user32.SystemParametersInfoW(
            0x0030, 0, ctypes.byref(rect), 0)             # SPI_GETWORKAREA
        if ok and rect.right > rect.left and rect.bottom > rect.top:
            return (rect.left, rect.top,
                    rect.right - rect.left, rect.bottom - rect.top)
    except Exception:                                     # noqa: BLE001
        pass
    try:
        import tkinter as tk
        root = tk._default_root                                 # noqa: SLF001
        if root is not None:
            return (0, 0, root.winfo_screenwidth(),
                    root.winfo_screenheight())
    except Exception:                                     # noqa: BLE001
        pass
    return (0, 0, 1920, 1080)


def _outer_size(win) -> tuple:
    """窗口的真实外框尺寸（含标题栏和边框）。

    客户区尺寸不等于窗口占的地方 —— 不按外框算，看起来就不居中。
    """
    try:
        import ctypes
        import ctypes.wintypes
        hwnd = int(win.frame(), 0)                        # '0x00012345'
        rect = ctypes.wintypes.RECT()
        if ctypes.windll.user32.GetWindowRect(hwnd, ctypes.byref(rect)):
            return (rect.right - rect.left, rect.bottom - rect.top,
                    rect.left, rect.top)
    except Exception:                                     # noqa: BLE001
        pass
    return (win.winfo_width(), win.winfo_height(), 0, 0)


def _place_centered(win, client_w: int, client_h: int) -> None:
    """在工作区正中间摆好这个窗口（按外框算）。"""
    client_w = max(1, int(client_w))
    client_h = max(1, int(client_h))
    # 先放到 0,0，好量出真实外框
    win.geometry(f"{client_w}x{client_h}+0+0")
    win.update_idletasks()

    outer_w, outer_h, outer_x, outer_y = _outer_size(win)
    # 外框相对客户区多出来的部分（左边框 / 标题栏+上边框）
    chrome_w = max(0, outer_w - client_w)
    chrome_h = max(0, outer_h - client_h)

    area_x, area_y, area_w, area_h = work_area()
    x = area_x + max(0, (area_w - outer_w) // 2) + chrome_w // 2
    y = area_y + max(0, (area_h - outer_h) // 2) + chrome_h - chrome_h // 2

    win.geometry(f"{client_w}x{client_h}+{x}+{y}")
    win.update_idletasks()
    win.lift()
    win.focus_force()


''' + HELPER_ANCHOR


def main() -> int:
    text = ACTIONS.read_text(encoding="utf-8")
    if "_place_centered" in text:
        print("  已经改过")
        return 0
    if OLD not in text:
        print("  [失败] 定位锚点没找到")
        return 1
    text = text.replace(OLD, NEW, 1)
    if HELPER_ANCHOR not in text:
        print("  [失败] 找不到 class Actions")
        return 1
    text = text.replace(HELPER_ANCHOR, HELPER, 1)
    ACTIONS.write_text(text, encoding="utf-8")
    print("  已改成按外框在工作区居中")

    import ast
    try:
        ast.parse(ACTIONS.read_text(encoding="utf-8"))
        print("  actions.py: 语法 OK")
    except SyntaxError as exc:
        print(f"  actions.py: 语法错误 {exc}")
        return 1
    return 0


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