# coding=utf-8
"""菜品识别客户端视觉主题（工业工具风）。

设计令牌分四层：
    COLORS  —— 颜色（含语义色与状态色，全部为浅色底 + 深色字，适配亮色主题）
    FONTS   —— 字体阶梯
    RADIUS  —— 圆角
    SPACING —— 间距

约定：
- 旧版 key 一律保留（`core/common_classifier.py` 的 BaseClassifierUI 仍在使用），
  新增 key 只做增量扩展，不做重命名。
- 所有颜色为十六进制字符串，可直接用于 tk / ttk / PIL。
"""
from tkinter import ttk

# ---------------------------------------------------------------------------
# 颜色
# ---------------------------------------------------------------------------
COLORS = {
    # 底色层次：页面 < 侧栏 < 卡片
    "bg": "#F6F7F9",
    "surface": "#FFFFFF",
    "surface_alt": "#FAFBFC",
    "sidebar": "#F2F4F7",
    "header_bg": "#FFFFFF",
    "threshold_bg": "#F7F8FA",
    "overlay": "#F2F4F7",

    # 品牌主色（结算机绿）
    "primary": "#2EAB6F",
    "primary_dark": "#24965F",
    "primary_soft": "#E8F8EF",
    "primary_border": "#A8E0C0",

    # 语义色（成功 / 警告 / 危险 / 中性）
    "success": "#2EAB6F",
    "success_soft": "#E8F8EF",
    "success_border": "#A8E0C0",
    "warn": "#FF7D00",
    "warn_soft": "#FFF7E8",
    "warn_border": "#FFCF8B",
    "danger": "#E53935",
    "danger_dark": "#C62828",
    "danger_soft": "#FFEBEE",
    "danger_border": "#FFCDD2",
    "neutral": "#86909C",
    "neutral_soft": "#F2F3F5",
    "sidebar_muted": "#F2F4F7",

    # 文字层次
    "text": "#1D2129",
    "text_body": "#4E5969",
    "text_sub": "#6B7280",
    "muted": "#86909C",
    "disabled_text": "#A9AEB8",
    "text_inv": "#FFFFFF",

    # 描边 / 分隔
    "border": "#E5E6EB",
    "border_strong": "#D8DEE6",
    "divider": "#EEF0F3",
    "focus_ring": "#8FD6B0",
    "shadow": "#D8DEE6",

    # 交互态
    "row_hover": "#E8F8EF",
    "row_selected": "#2EAB6F",
    "disabled_bg": "#C9CDD4",

    # 预览区（结算机浅色托盘区）
    "preview_bg": "#F0F2F5",
    "preview_mid": "#ECEFF3",
    "preview_hi": "#E2E6EB",
    "preview_fg": "#6B7785",
    "preview_line": "#C9CDD4",

    # 结算机专用
    "pos_tip_bar": "#2EAB6F",
    "pos_tip_fg": "#FFFFFF",
    "pos_total_bg": "#E53935",
    "pos_total_fg": "#FFFFFF",
    "pos_row_alt": "#F7F8FA",
    "pos_bottom_bar": "#FFFFFF",
    "pos_btn": "#3CB878",
    "pos_btn_dark": "#2EAB6F",

    # 滚动条
    "scroll_track": "#F2F4F7",
    "scroll_thumb": "#C9CED6",
    "scroll_thumb_hover": "#A9AEB8",

    # 浮层
    "tooltip_bg": "#2A3342",
    "tooltip_fg": "#F2F3F5",

    # 徽章实心底
    "chip_ok_bg": "#2EAB6F",
    "chip_bad_bg": "#E53935",
    "chip_warn_bg": "#FF7D00",
    "chip_info_bg": "#2EAB6F",

    # 别名（历史代码兼容）
    "accent": "#2EAB6F",
    "accent_dark": "#24965F",
    "accent_soft": "#E8F8EF",
    "info": "#2EAB6F",
    "info_soft": "#E8F8EF",
}

# ---------------------------------------------------------------------------
# 字体
# ---------------------------------------------------------------------------
_FAMILY = "Microsoft YaHei UI"
_FAMILY_MONO = "Consolas"

FONTS = {
    # 历史 key（勿删）
    "ui": (_FAMILY, 10),
    "ui_bold": (_FAMILY, 10, "bold"),
    "title": (_FAMILY, 20, "bold"),
    "subtitle": (_FAMILY, 10),
    "section": (_FAMILY, 14, "bold"),
    "card_title": (_FAMILY, 14, "bold"),
    "button": (_FAMILY, 10),
    "button_lg": (_FAMILY, 10, "bold"),
    "small": (_FAMILY, 9),
    "result": (_FAMILY, 10),
    "preview_hint": (_FAMILY, 11),
    # 新增阶梯
    "display": (_FAMILY, 22, "bold"),
    "h1": (_FAMILY, 16, "bold"),
    "h2": (_FAMILY, 13, "bold"),
    "h3": (_FAMILY, 11, "bold"),
    "body": (_FAMILY, 10),
    "caption": (_FAMILY, 9),
    "metric": (_FAMILY, 20, "bold"),
    "mono": (_FAMILY_MONO, 9),
    "badge": (_FAMILY, 9),
}

# ---------------------------------------------------------------------------
# 圆角 / 间距
# ---------------------------------------------------------------------------
RADIUS = {
    "sm": 6,
    "md": 8,
    "lg": 12,
    "xl": 16,
    "pill": 999,
}

SPACING = {
    "xs": 4,
    "sm": 8,
    "md": 12,
    "lg": 16,
    "xl": 20,
    "xxl": 24,
}

# 常用控件高度，统一视觉节奏
SIZES = {
    "header_h": 52,
    "sidebar_w": 268,
    "cart_w": 320,
    "button_h": 44,
    "button_sm_h": 28,
    "notice_h": 36,
    "badge_h": 28,
    "preview_min_h": 480,
    "wrap": 980,
    "pos_bottom_h": 64,
}

# 菜品缩略图渐变色板（按菜名关键词 / hash）
DISH_GRADIENTS = [
    ("#FFE08A", "#F7BA1E"),  # 土豆黄
    ("#FF9A8B", "#F53F3F"),  # 鸡肉红
    ("#9BE7A3", "#00B42A"),  # 青菜绿
    ("#8FD3FF", "#2EAB6F"),  # 海鲜青绿
    ("#E8C4FF", "#8D4EDA"),  # 蒸蛋紫
    ("#FFD4A3", "#FF7D00"),  # 炒肉橙
    ("#B7F0E5", "#0FC6C2"),  # 清汤青
    ("#FFC0D9", "#F5319D"),  # 虾仁粉
]


def dish_gradient_for(name: str):
    n = name or ""
    if any(k in n for k in ("土豆", "薯", "丝")):
        return DISH_GRADIENTS[0]
    if any(k in n for k in ("鸡", "肉", "鸭", "排骨")):
        return DISH_GRADIENTS[1]
    if any(k in n for k in ("青菜", "菜", "芹", "笋", "菇", "瓜")):
        return DISH_GRADIENTS[2]
    if any(k in n for k in ("虾", "鱼", "蟹", "海")):
        return DISH_GRADIENTS[3]
    if any(k in n for k in ("蛋", "蒸")):
        return DISH_GRADIENTS[4]
    return DISH_GRADIENTS[sum(ord(ch) for ch in n) % len(DISH_GRADIENTS)]


# ---------------------------------------------------------------------------
# 颜色工具
# ---------------------------------------------------------------------------
def hex_to_rgb(value):
    v = (value or "#000000").lstrip("#")
    if len(v) == 3:
        v = "".join(ch * 2 for ch in v)
    return tuple(int(v[i:i + 2], 16) for i in (0, 2, 4))


def rgb_to_hex(rgb):
    return "#{:02X}{:02X}{:02X}".format(*(max(0, min(255, int(c))) for c in rgb))


def mix(color_a, color_b, t=0.5):
    """在两个颜色之间线性插值，t=0 取 a，t=1 取 b。"""
    t = max(0.0, min(1.0, t))
    ra, rb = hex_to_rgb(color_a), hex_to_rgb(color_b)
    return rgb_to_hex(tuple(ra[i] * (1 - t) + rb[i] * t for i in range(3)))


def tone_pair(tone):
    """tone -> (浅底, 主色) 二元组，供徽章 / 提示条统一取色。"""
    c = COLORS
    return {
        "ok": (c["success_soft"], c["success"]),
        "success": (c["success_soft"], c["success"]),
        "warn": (c["warn_soft"], c["warn"]),
        "err": (c["danger_soft"], c["danger"]),
        "danger": (c["danger_soft"], c["danger"]),
        "busy": (c["primary_soft"], c["primary"]),
        "info": (c["primary_soft"], c["primary"]),
        "mute": (c["neutral_soft"], c["neutral"]),
        "neutral": (c["neutral_soft"], c["neutral"]),
    }.get(tone or "info", (c["primary_soft"], c["primary"]))


def tone_text(tone):
    """tone -> 深色文字，保证浅底上的对比度。"""
    c = COLORS
    return {
        "ok": c["success"],
        "success": c["success"],
        "warn": c["warn"],
        "err": c["danger"],
        "danger": c["danger"],
        "busy": c["primary"],
        "info": c["primary"],
        "mute": c["text_body"],
        "neutral": c["text_body"],
    }.get(tone or "info", c["primary"])


# ---------------------------------------------------------------------------
# ttk 主题
# ---------------------------------------------------------------------------
def apply_theme(root=None):
    style = ttk.Style()
    try:
        style.theme_use("clam")
    except Exception:
        pass

    c = COLORS
    f = FONTS

    style.configure(".", font=f["ui"], background=c["bg"], foreground=c["text_body"])
    style.configure("TFrame", background=c["bg"])
    style.configure("Surface.TFrame", background=c["surface"])
    style.configure("Sidebar.TFrame", background=c["sidebar"])
    style.configure("Raised.TFrame", background=c["surface"], relief="flat")

    # ---- 标签 ----
    style.configure("TLabel", background=c["bg"], foreground=c["text_body"], font=f["ui"])
    style.configure("Surface.TLabel", background=c["surface"], foreground=c["text_body"], font=f["ui"])
    style.configure("Title.TLabel", background=c["bg"], foreground=c["text"], font=f["section"])
    style.configure("SurfaceTitle.TLabel", background=c["surface"], foreground=c["text"], font=f["card_title"])
    style.configure("Medium.TLabel", background=c["bg"], foreground=c["text_body"], font=f["subtitle"])
    style.configure("Small.TLabel", background=c["bg"], foreground=c["muted"], font=f["small"])
    style.configure("SurfaceSmall.TLabel", background=c["surface"], foreground=c["muted"], font=f["small"])
    style.configure("Muted.TLabel", background=c["surface"], foreground=c["muted"], font=f["small"])
    style.configure("CardTitle.TLabel", background=c["surface"], foreground=c["text"], font=f["card_title"])
    style.configure("CardMeta.TLabel", background=c["surface"], foreground=c["muted"], font=f["small"])
    style.configure("SidebarTitle.TLabel", background=c["sidebar"], foreground=c["text"], font=f["section"])
    style.configure("SidebarHint.TLabel", background=c["sidebar"], foreground=c["muted"], font=f["small"])
    style.configure("Metric.TLabel", background=c["surface"], foreground=c["primary"], font=f["metric"])
    style.configure("Danger.TLabel", background=c["surface"], foreground=c["danger"], font=f["small"])

    # ---- 兜底按钮（主路径走 Canvas PillButton）----
    style.configure(
        "Primary.TButton",
        font=f["button_lg"],
        background=c["primary"],
        foreground="#FFFFFF",
        bordercolor=c["primary"],
        lightcolor=c["primary"],
        darkcolor=c["primary"],
        focusthickness=0,
        padding=(18, 8),
    )
    style.map(
        "Primary.TButton",
        background=[("active", c["primary_dark"]), ("pressed", c["primary_dark"]), ("disabled", c["disabled_bg"])],
        foreground=[("disabled", "#FFFFFF")],
    )
    style.configure(
        "Secondary.TButton",
        font=f["button"],
        background=c["surface"],
        foreground=c["primary"],
        bordercolor=c["primary_border"],
        lightcolor=c["primary"],
        darkcolor=c["primary"],
        relief="solid",
        borderwidth=1,
        focusthickness=0,
        padding=(16, 8),
    )
    style.map(
        "Secondary.TButton",
        background=[("active", c["primary_soft"]), ("pressed", c["primary_soft"]), ("disabled", c["neutral_soft"])],
        foreground=[("active", c["primary_dark"]), ("disabled", c["disabled_text"])],
    )
    style.configure(
        "Ghost.TButton",
        font=f["button"],
        background=c["neutral_soft"],
        foreground=c["text_body"],
        bordercolor=c["border"],
        focusthickness=0,
        padding=(14, 8),
    )
    style.map(
        "Ghost.TButton",
        background=[("active", c["border"]), ("disabled", c["neutral_soft"])],
        foreground=[("disabled", c["disabled_text"])],
    )
    style.configure(
        "Sidebar.TButton",
        font=f["button"],
        background=c["surface"],
        foreground=c["text_body"],
        bordercolor=c["border"],
        focusthickness=0,
        padding=(10, 8),
    )
    style.map(
        "Sidebar.TButton",
        background=[("active", c["primary_soft"])],
        foreground=[("active", c["primary"])],
    )
    style.configure(
        "Danger.TButton",
        font=f["button"],
        background=c["surface"],
        foreground=c["danger"],
        bordercolor=c["danger_border"],
        focusthickness=0,
        padding=(10, 8),
    )
    style.map(
        "Danger.TButton",
        background=[("active", c["danger"]), ("pressed", c["danger_dark"])],
        foreground=[("active", "#FFFFFF"), ("pressed", "#FFFFFF")],
    )
    style.configure(
        "GhostDanger.TButton",
        font=f["small"],
        background=c["surface"],
        foreground=c["danger"],
        bordercolor=c["surface"],
        focusthickness=0,
        padding=(6, 2),
    )
    style.map(
        "GhostDanger.TButton",
        background=[("active", c["danger_soft"])],
        foreground=[("active", c["danger"])],
    )
    style.configure("Large.TButton", font=f["button"], padding=(12, 8))

    # ---- 单选 / 复选 ----
    style.configure(
        "TRadiobutton",
        background=c["bg"],
        foreground=c["text_body"],
        font=f["ui"],
        focuscolor=c["bg"],
        indicatorcolor=c["surface"],
        bordercolor=c["border"],
    )
    style.map(
        "TRadiobutton",
        background=[("active", c["bg"])],
        foreground=[("active", c["primary"]), ("disabled", c["disabled_text"])],
        indicatorcolor=[("selected", c["primary"]), ("pressed", c["primary_dark"])],
    )
    style.configure(
        "TCheckbutton",
        background=c["bg"],
        foreground=c["text_body"],
        font=f["ui"],
        focuscolor=c["bg"],
        indicatorcolor=c["surface"],
        bordercolor=c["border"],
    )
    style.map(
        "TCheckbutton",
        background=[("active", c["bg"])],
        foreground=[("active", c["primary"]), ("disabled", c["disabled_text"])],
        indicatorcolor=[("selected", c["primary"])],
    )

    # ---- 输入控件 ----
    style.configure(
        "Large.TEntry",
        font=f["ui"],
        fieldbackground="#FFFFFF",
        background="#FFFFFF",
        foreground=c["text"],
        bordercolor=c["border"],
        lightcolor=c["focus_ring"],
        darkcolor=c["border"],
        insertcolor=c["text"],
        padding=6,
    )
    style.map(
        "Large.TEntry",
        bordercolor=[("focus", c["primary"])],
        lightcolor=[("focus", c["primary"])],
    )
    style.configure(
        "Large.TSpinbox",
        font=f["ui"],
        fieldbackground="#FFFFFF",
        background="#FFFFFF",
        foreground=c["text"],
        bordercolor=c["border"],
        arrowcolor=c["text_body"],
        arrowsize=13,
        padding=4,
    )
    style.map("Large.TSpinbox", bordercolor=[("focus", c["primary"])])
    style.configure(
        "TCombobox",
        font=f["ui"],
        fieldbackground="#FFFFFF",
        background="#FFFFFF",
        foreground=c["text"],
        bordercolor=c["border"],
        arrowcolor=c["text_body"],
        padding=4,
    )
    style.map(
        "TCombobox",
        fieldbackground=[("readonly", "#FFFFFF"), ("disabled", c["neutral_soft"])],
        foreground=[("disabled", c["disabled_text"])],
        bordercolor=[("focus", c["primary"])],
    )
    try:
        root_option_db = root.option_get if root is not None else None
        if root_option_db is not None:
            root.option_add("*TCombobox*Listbox.background", "#FFFFFF")
            root.option_add("*TCombobox*Listbox.foreground", c["text"])
            root.option_add("*TCombobox*Listbox.selectBackground", c["primary_soft"])
            root.option_add("*TCombobox*Listbox.selectForeground", c["primary"])
            root.option_add("*TCombobox*Listbox.font", f["ui"])
    except Exception:
        pass

    # ---- 滑块 ----
    style.configure(
        "Threshold.Horizontal.TScale",
        background=c["threshold_bg"],
        troughcolor=c["border"],
        bordercolor=c["threshold_bg"],
        lightcolor=c["primary"],
        darkcolor=c["primary"],
        sliderthickness=14,
    )
    style.configure(
        "Horizontal.TScale",
        background=c["surface"],
        troughcolor=c["border"],
        bordercolor=c["surface"],
        lightcolor=c["primary"],
        darkcolor=c["primary"],
        sliderthickness=14,
    )

    # ---- 表格 ----
    style.configure(
        "Treeview",
        background=c["surface"],
        fieldbackground=c["surface"],
        foreground=c["text_body"],
        rowheight=30,
        font=f["ui"],
        borderwidth=0,
        relief="flat",
    )
    style.configure(
        "Treeview.Heading",
        background=c["bg"],
        foreground=c["text"],
        font=f["ui_bold"],
        relief="flat",
        padding=(8, 6),
    )
    style.map(
        "Treeview",
        background=[("selected", c["primary_soft"])],
        foreground=[("selected", c["text"])],
    )
    style.map("Treeview.Heading", background=[("active", c["border"])])

    # ---- 滚动条 ----
    for orient in ("Vertical", "Horizontal"):
        style.configure(
            f"{orient}.TScrollbar",
            background=c["scroll_thumb"],
            troughcolor=c["scroll_track"],
            bordercolor=c["scroll_track"],
            arrowcolor=c["muted"],
            lightcolor=c["scroll_thumb"],
            darkcolor=c["scroll_thumb"],
            relief="flat",
            borderwidth=0,
            arrowsize=12,
            width=10,
        )
        style.map(
            f"{orient}.TScrollbar",
            background=[("active", c["scroll_thumb_hover"]), ("pressed", c["scroll_thumb_hover"])],
        )

    # ---- 容器类 ----
    style.configure("TLabelframe", background=c["surface"], bordercolor=c["border"], borderwidth=1, relief="solid")
    style.configure(
        "TLabelframe.Label", background=c["surface"], foreground=c["text"], font=f["ui_bold"],
    )
    style.configure("TNotebook", background=c["bg"], borderwidth=0, tabmargins=(0, 4, 0, 0))
    style.configure(
        "TNotebook.Tab", background=c["neutral_soft"], foreground=c["text_body"],
        font=f["ui"], padding=(16, 8), borderwidth=0,
    )
    style.map(
        "TNotebook.Tab",
        background=[("selected", c["surface"])],
        foreground=[("selected", c["primary"])],
    )
    style.configure("TSeparator", background=c["divider"])
    style.configure("TProgressbar", background=c["primary"], troughcolor=c["border"], borderwidth=0)

    if root is not None:
        try:
            root.configure(bg=c["bg"])
        except Exception:
            pass
    return style