# -*- coding: utf-8 -*-
"""被控端唯一的窗口：首次设置窗口（重做版）。

整个程序只有这一个窗口，而且只在**第一次运行**时出现一次：

    双击 exe
      → 弹出这个窗口：设 6 位配对码 + 勾「开机自启」「放行防火墙」
      → 点确定 → 先检查这个码在服务器上有没有被占
                被占就弹框让你换，换好了才继续
      → 黑终端一闪（放行防火墙）
      → 防火墙没放行成功的话，**不把码交给服务器**，并说明原因
      → 之后永远后台静默，屏幕上什么都没有
      → 手表输这 6 位数字就连上了

界面重做的要点：
    * 用作者给的图标（原来是代码画的一个蓝方块）
    * 分区卡片：配对码单独一块，选项单独一块，不再是一堆裸控件
    * 配对码框大字号、居中、字距拉开，一眼能看清
    * 状态提示带颜色（红=错误，黄=提醒，绿=通过）
    * 配对码统一成 **6 位数字**（中转就是要这个格式，
      以前允许 6-16 位字母数字，用户填 10 位会在检查那步卡死）
"""
from __future__ import annotations

import tkinter as tk
from pathlib import Path

# ----------------------------------------------------------------------
# 配色（浅色，和手表端一致）
# ----------------------------------------------------------------------

BG = "#eef1f6"
CARD = "#ffffff"
FG = "#1f2328"
ACCENT = "#185ce8"
ACCENT_DARK = "#0f47bd"
OK = "#1a7f37"
WARN = "#9a6700"
DANGER = "#cf222e"
DIM = "#656d76"
MUTED = "#8c959f"
BORDER = "#d8dee4"

FONT_UI = ("Microsoft YaHei UI", 10)
FONT_TITLE = ("Microsoft YaHei UI", 17, "bold")
FONT_SUB = ("Microsoft YaHei UI", 9)
FONT_SMALL = ("Microsoft YaHei UI", 9)
FONT_LABEL = ("Microsoft YaHei UI", 10, "bold")
FONT_CODE = ("Consolas", 26, "bold")
FONT_BTN = ("Microsoft YaHei UI", 10, "bold")

# 图标源图（作者给的）
ICON_SOURCE = Path(__file__).resolve().parent.parent.parent / "_build" / "icon_source.png"


def make_icon_image(size: int = 64):
    """取图标。优先用作者给的那张图，读不到再退回代码画的那个。"""
    try:
        from PIL import Image
        if ICON_SOURCE.is_file():
            img = Image.open(ICON_SOURCE).convert("RGBA")
            width, height = img.size
            side = min(width, height)
            left = (width - side) // 2
            top = (height - side) // 2
            img = img.crop((left, top, left + side, top + side))
            return img.resize((size, size), Image.LANCZOS)
    except Exception:                                     # noqa: BLE001
        pass
    return _drawn_icon(size)


ICON_BLUE = (24, 92, 232, 255)


def _drawn_icon(size: int = 64):
    """兜底：代码画一个蓝底手表。"""
    from PIL import Image, ImageDraw
    img = Image.new("RGBA", (size, size), (0, 0, 0, 0))
    draw = ImageDraw.Draw(img)
    margin = max(1, size // 16)
    draw.rounded_rectangle([margin, margin, size - margin, size - margin],
                           radius=max(2, size // 5), fill=ICON_BLUE)
    cx = size // 2
    box_w = int(size * 0.36)
    box_h = int(size * 0.30)
    top = int(size * 0.35)
    strap_w = int(size * 0.16)
    draw.rounded_rectangle([cx - strap_w // 2, top - int(size * 0.10),
                            cx + strap_w // 2, top],
                           radius=max(1, size // 32), fill=(255, 255, 255, 255))
    draw.rounded_rectangle([cx - strap_w // 2, top + box_h,
                            cx + strap_w // 2, top + box_h + int(size * 0.10)],
                           radius=max(1, size // 32), fill=(255, 255, 255, 255))
    draw.rounded_rectangle([cx - box_w // 2, top, cx + box_w // 2, top + box_h],
                           radius=max(2, size // 16), fill=(255, 255, 255, 255))
    return img


class SetupWindow:
    """首次使用的设置窗口。

    用法：
        result = SetupWindow(store).show()
        if result is None:      # 用户关掉了
            ...
        result["code"]          # 用户设的配对码
        result["autostart"]     # 要不要开机自启
        result["firewall"]      # 要不要顺手放行防火墙
    """

    CODE_LEN = 6

    def __init__(self, store, suggested: str = ""):
        self.store = store
        self.suggested = (suggested or store.pairing_code()
                          or store.new_pairing_code())
        self.result: dict | None = None
        self.root: tk.Tk | None = None
        self._after_ids: list = []
        self._icon = None

    # ------------------------------------------------------------------

    def show(self, on_ready=None) -> dict | None:
        """弹出窗口并阻塞，直到用户点确定或关掉。

        on_ready 是窗口建好之后的回调（自动化测试用）。
        """
        self.root = tk.Tk()
        self.root.title("ykxmz · 第一次设置")
        self.root.configure(bg=BG)
        self.root.resizable(False, False)
        self._set_icon()
        self._build()

        self.root.update_idletasks()
        if on_ready is not None:
            def _fire():
                if self._alive():
                    on_ready(self)
            self._after_ids.append(self.root.after(300, _fire))

        self._center()
        self.root.lift()
        self.root.attributes("-topmost", True)

        def _drop_topmost():
            if self._alive():
                try:
                    self.root.attributes("-topmost", False)
                except tk.TclError:
                    pass

        self._after_ids.append(self.root.after(700, _drop_topmost))
        self.root.mainloop()

        for after_id in self._after_ids:
            try:
                self.root.after_cancel(after_id)
            except Exception:                             # noqa: BLE001
                pass
        self._after_ids = []
        try:
            self.root.destroy()
        except tk.TclError:
            pass
        self.root = None
        return self.result

    def _alive(self) -> bool:
        """窗口还在吗。after 回调必须在销毁后自己退出，否则会报
        invalid command name。"""
        try:
            return self.root is not None and bool(self.root.winfo_exists())
        except tk.TclError:
            return False

    def _set_icon(self) -> None:
        try:
            from PIL import ImageTk
            self._icon = ImageTk.PhotoImage(make_icon_image(64))
            self.root.iconphoto(True, self._icon)
        except Exception:                                 # noqa: BLE001
            pass

    def _center(self) -> None:
        width = self.root.winfo_reqwidth()
        height = self.root.winfo_reqheight()
        screen_w = self.root.winfo_screenwidth()
        screen_h = self.root.winfo_screenheight()
        x = max(0, (screen_w - width) // 2)
        y = max(0, (screen_h - height) // 3)
        self.root.geometry(f"{width}x{height}+{x}+{y}")

    # ------------------------------------------------------------------

    def _card(self, parent) -> tk.Frame:
        """一个白底圆角感的卡片（tkinter 没有圆角，用边框色模拟）。

        返回的是**外层** frame —— 调用处要 pack 它。
        踩过的坑：一开始返回 inner，而 inner 的父控件是 outer，
        于是 inner.pack() 挂回 outer，outer 自己从没被 pack，
        结果卡片完全不显示（窗口高度只剩 199px）。
        """
        outer = tk.Frame(parent, bg=BORDER)
        inner = tk.Frame(outer, bg=CARD)
        inner.pack(fill="both", expand=True, padx=1, pady=1)
        return outer

    def _build(self) -> None:
        root = self.root

        # ---- 顶部强调条 ----
        tk.Frame(root, bg=ACCENT, height=5).pack(fill="x")

        page = tk.Frame(root, bg=BG)
        page.pack(fill="both", expand=True, padx=20, pady=18)

        # ================= 标题区 =================
        header = tk.Frame(page, bg=BG)
        header.pack(fill="x")

        try:
            from PIL import ImageTk
            badge = ImageTk.PhotoImage(make_icon_image(46))
            icon_label = tk.Label(header, image=badge, bg=BG, bd=0)
            icon_label.image = badge                    # 留引用
            icon_label.pack(side="left", padx=(0, 12))
        except Exception:                                 # noqa: BLE001
            pass

        titles = tk.Frame(header, bg=BG)
        titles.pack(side="left", anchor="w")
        tk.Label(titles, text="ykxmz", bg=BG, fg=FG, font=FONT_TITLE).pack(
            anchor="w")
        tk.Label(titles, text="远程控制 · 第一次设置", bg=BG, fg=DIM,
                 font=FONT_SUB).pack(anchor="w")

        # ================= 配对码卡片 =================
        card = self._card(page)
        card.pack(fill="x", pady=(16, 0))

        inner = tk.Frame(card.winfo_children()[0], bg=CARD)
        inner.pack(fill="x", padx=16, pady=14)

        tk.Label(inner, text="配对码", bg=CARD, fg=FG, font=FONT_LABEL).pack(
            anchor="w")

        code_row = tk.Frame(inner, bg=CARD)
        code_row.pack(fill="x", pady=(8, 0))

        code_box = tk.Frame(code_row, bg="#f6f8fa",
                            highlightthickness=1,
                            highlightbackground=BORDER,
                            highlightcolor=ACCENT)
        code_box.pack(side="left")

        self.entry = tk.Entry(
            code_box, bg="#f6f8fa", fg=ACCENT_DARK, relief="flat",
            font=FONT_CODE, width=7, justify="center",
            insertbackground=ACCENT)
        self.entry.insert(0, self.suggested)
        self.entry.pack(padx=10, pady=6)
        self.entry.select_range(0, "end")
        self.entry.focus_set()
        # 只允许输入数字，且最多 6 位
        self.entry.bind("<KeyRelease>", self._on_code_key)

        self._flat_button(code_row, "换一个", self._reroll).pack(
            side="left", padx=(10, 0))

        tk.Label(inner, text="6 位数字。手表上输这 6 位就能连上这台电脑。",
                 bg=CARD, fg=MUTED, font=FONT_SMALL).pack(
            anchor="w", pady=(8, 0))

        self.status = tk.Label(inner, text="", bg=CARD, fg=DANGER,
                               font=FONT_SMALL, wraplength=330,
                               justify="left", anchor="w")
        self.status.pack(fill="x", pady=(6, 0))

        # ================= 选项卡片 =================
        options = self._card(page)
        options.pack(fill="x", pady=(12, 0))
        opt_inner = tk.Frame(options.winfo_children()[0], bg=CARD)
        opt_inner.pack(fill="x", padx=16, pady=12)

        tk.Label(opt_inner, text="选项", bg=CARD, fg=FG,
                 font=FONT_LABEL).pack(anchor="w", pady=(0, 6))

        self.var_auto = tk.BooleanVar(value=True)
        self._check(opt_inner, "开机自动运行", self.var_auto,
                    "开机后在后台跑，不用手动开")
        self.var_firewall = tk.BooleanVar(value=True)
        self._check(opt_inner, "放行防火墙", self.var_firewall,
                    "会弹一次管理员确认，然后黑窗口一闪而过")
        tk.Label(opt_inner,
                 text="没放行成功的话，配对码不会提交给服务器，"
                      "会告诉你怎么处理。",
                 bg=CARD, fg=MUTED, font=FONT_SMALL, justify="left",
                 wraplength=396).pack(anchor="w", pady=(6, 0))

        # ================= 按钮区 =================
        buttons = tk.Frame(page, bg=BG)
        buttons.pack(fill="x", pady=(16, 0))

        primary = tk.Button(
            buttons, text="确定，开始使用", command=self._confirm,
            relief="flat", bd=0, font=FONT_BTN, cursor="hand2",
            bg=ACCENT, fg="#ffffff",
            activebackground=ACCENT_DARK, activeforeground="#ffffff",
            padx=22, pady=10)
        primary.pack(side="left")

        tk.Button(
            buttons, text="取消", command=self._cancel,
            relief="flat", bd=0, font=FONT_UI, cursor="hand2",
            bg=BG, fg=DIM, activebackground="#e2e6ec", activeforeground=FG,
            padx=14, pady=10).pack(side="left", padx=(8, 0))

        tk.Label(page, text="设完之后程序就在后台跑，不会再出现任何窗口。"
                            "需要重设就跑 ykxmz.exe --setup",
                 bg=BG, fg=MUTED, font=FONT_SMALL).pack(anchor="w",
                                                        pady=(12, 0))

        root.bind("<Return>", lambda _e: self._confirm())
        root.bind("<Escape>", lambda _e: self._cancel())
        root.protocol("WM_DELETE_WINDOW", self._cancel)

    def _check(self, parent, title: str, variable, hint: str) -> None:
        """一行勾选框 + 灰字说明。"""
        row = tk.Frame(parent, bg=CARD)
        row.pack(fill="x", pady=(2, 0))
        tk.Checkbutton(row, text=title, variable=variable, bg=CARD, fg=FG,
                       activebackground=CARD, activeforeground=FG,
                       selectcolor="#ffffff", font=FONT_UI, bd=0,
                       highlightthickness=0,
                       cursor="hand2").pack(side="left")
        tk.Label(row, text=hint, bg=CARD, fg=MUTED,
                 font=FONT_SMALL).pack(side="left", padx=(8, 0))

    def _flat_button(self, parent, text, command, primary: bool = False):
        button = tk.Button(
            parent, text=text, command=command, relief="flat", bd=0,
            font=FONT_UI if not primary else FONT_BTN, cursor="hand2",
            bg="#eaeef2" if not primary else ACCENT,
            fg=FG if not primary else "#ffffff",
            activebackground="#dfe3e8" if not primary else ACCENT_DARK,
            activeforeground=FG if not primary else "#ffffff",
            padx=12, pady=6)
        return button

    # ------------------------------------------------------------------

    def _on_code_key(self, _event=None) -> None:
        """输入时过滤：只留数字，最多 6 位。"""
        raw = self.entry.get()
        cleaned = "".join(ch for ch in raw if ch.isdigit())[:self.CODE_LEN]
        if cleaned != raw:
            position = self.entry.index("insert")
            self.entry.delete(0, "end")
            self.entry.insert(0, cleaned)
            self.entry.icursor(min(position, len(cleaned)))
        if len(cleaned) == self.CODE_LEN:
            self._set_status("", MUTED)

    def _set_status(self, text: str, color: str) -> None:
        try:
            self.status.configure(text=text, fg=color)
        except tk.TclError:
            pass

    def _reroll(self) -> None:
        self.entry.delete(0, "end")
        self.entry.insert(0, self.store.new_pairing_code())
        self._set_status("", MUTED)
        self.entry.focus_set()

    def _confirm(self) -> None:
        typed = self.entry.get().strip()
        cleaned = "".join(ch for ch in typed if ch.isdigit())

        if not cleaned:
            self._set_status("请填一个 6 位数字", DANGER)
            return
        if len(cleaned) != self.CODE_LEN:
            self._set_status(
                f"配对码要正好 {self.CODE_LEN} 位数字，现在是 {len(cleaned)} 位",
                DANGER)
            return

        self.result = {
            "code": cleaned,
            "autostart": bool(self.var_auto.get()),
            "firewall": bool(self.var_firewall.get()),
        }
        try:
            self.root.quit()
        except tk.TclError:
            pass

    def _cancel(self) -> None:
        self.result = None
        try:
            self.root.quit()
        except tk.TclError:
            pass