"""
Cyberpunk theme — colors, fonts, and reusable widget factories.
"""
import customtkinter as ctk
from config import THEME


class CyberpunkTheme:
    """Applies the cyberpunk neon theme to the entire application."""

    # Color palette
    BG_DARK    = THEME["bg_dark"]
    BG_MEDIUM  = THEME["bg_medium"]
    BG_LIGHT   = THEME["bg_light"]
    PRIMARY    = THEME["primary"]
    SECONDARY  = THEME["secondary"]
    TERTIARY   = THEME["tertiary"]
    TEXT_PRIMARY   = THEME["text_primary"]
    TEXT_SECONDARY = THEME["text_secondary"]
    TEXT_DIM       = THEME["text_dim"]
    SUCCESS = THEME["success"]
    WARNING = THEME["warning"]
    ERROR   = THEME["error"]
    BORDER  = THEME["border"]

    @classmethod
    def _set(cls, widget: str, **props):
        """Set theme properties only when the widget key exists in customtkinter."""
        theme = ctk.ThemeManager.theme
        if widget not in theme:
            return
        for key, value in props.items():
            if key in theme[widget]:
                theme[widget][key] = value

    @classmethod
    def apply(cls):
        """Apply the cyberpunk theme globally to customtkinter."""
        ctk.set_appearance_mode("dark")
        ctk.set_default_color_theme("dark-blue")

        # ── Frames ──────────────────────────────────────────────
        cls._set("CTkFrame",
                 fg_color=[cls.BG_MEDIUM, cls.BG_MEDIUM],
                 border_color=[cls.BORDER, cls.BORDER],
                 top_fg_color=[cls.BG_DARK, cls.BG_DARK])

        # ── Buttons ─────────────────────────────────────────────
        cls._set("CTkButton",
                 fg_color=[cls.TERTIARY, cls.TERTIARY],
                 hover_color=[cls.PRIMARY, cls.PRIMARY],
                 text_color=[cls.TEXT_PRIMARY, cls.TEXT_PRIMARY],
                 border_color=[cls.PRIMARY, cls.PRIMARY])

        # ── Entries ─────────────────────────────────────────────
        cls._set("CTkEntry",
                 fg_color=[cls.BG_DARK, cls.BG_DARK],
                 text_color=[cls.TEXT_PRIMARY, cls.TEXT_PRIMARY],
                 border_color=[cls.BORDER, cls.BORDER],
                 placeholder_text_color=[cls.TEXT_DIM, cls.TEXT_DIM])

        # ── Labels ──────────────────────────────────────────────
        cls._set("CTkLabel",
                 text_color=[cls.TEXT_PRIMARY, cls.TEXT_PRIMARY],
                 fg_color=["transparent", "transparent"])

        # ── Checkboxes (customtkinter uses CTkCheckBox, not CTkCheckbox) ──
        cls._set("CTkCheckBox",
                 fg_color=[cls.TERTIARY, cls.TERTIARY],
                 hover_color=[cls.PRIMARY, cls.PRIMARY],
                 text_color=[cls.TEXT_PRIMARY, cls.TEXT_PRIMARY],
                 border_color=[cls.BORDER, cls.BORDER],
                 checkmark_color=[cls.BG_DARK, cls.BG_DARK])

        # ── Progress bars ────────────────────────────────────────
        cls._set("CTkProgressBar",
                 fg_color=[cls.BG_DARK, cls.BG_DARK],
                 progress_color=[cls.PRIMARY, cls.PRIMARY],
                 border_color=[cls.BORDER, cls.BORDER])

        # ── Sliders ──────────────────────────────────────────────
        cls._set("CTkSlider",
                 fg_color=[cls.BG_DARK, cls.BG_DARK],
                 progress_color=[cls.PRIMARY, cls.PRIMARY],
                 button_color=[cls.PRIMARY, cls.PRIMARY],
                 button_hover_color=[cls.SECONDARY, cls.SECONDARY])

        # ── Option menus ─────────────────────────────────────────
        cls._set("CTkOptionMenu",
                 fg_color=[cls.BG_DARK, cls.BG_DARK],
                 text_color=[cls.TEXT_PRIMARY, cls.TEXT_PRIMARY],
                 dropdown_fg_color=[cls.BG_MEDIUM, cls.BG_MEDIUM],
                 dropdown_hover_color=[cls.TERTIARY, cls.TERTIARY],
                 dropdown_text_color=[cls.TEXT_PRIMARY, cls.TEXT_PRIMARY],
                 border_color=[cls.BORDER, cls.BORDER])

        # ── Scrollbars ───────────────────────────────────────────
        cls._set("CTkScrollbar",
                 fg_color=[cls.BG_DARK, cls.BG_DARK],
                 button_color=[cls.TERTIARY, cls.TERTIARY],
                 button_hover_color=[cls.PRIMARY, cls.PRIMARY])

        # ── Tab bar (CTkTabview uses CTkSegmentedButton internally) ──
        cls._set("CTkSegmentedButton",
                 fg_color=[cls.BG_DARK, cls.BG_DARK],
                 selected_color=[cls.TERTIARY, cls.TERTIARY],
                 selected_hover_color=[cls.PRIMARY, cls.PRIMARY],
                 unselected_color=[cls.BG_DARK, cls.BG_DARK],
                 unselected_hover_color=[cls.BG_LIGHT, cls.BG_LIGHT],
                 text_color=[cls.TEXT_PRIMARY, cls.TEXT_PRIMARY])

        # ── Textboxes ────────────────────────────────────────────
        cls._set("CTkTextbox",
                 fg_color=[cls.BG_DARK, cls.BG_DARK],
                 text_color=[cls.TEXT_PRIMARY, cls.TEXT_PRIMARY],
                 border_color=[cls.BORDER, cls.BORDER])

        # ── Scrollable frames ────────────────────────────────────
        cls._set("CTkScrollableFrame",
                 fg_color=[cls.BG_MEDIUM, cls.BG_MEDIUM],
                 border_color=[cls.BORDER, cls.BORDER])

    # ──────────────────────────────────────────────────────────────
    # Widget factories
    # ──────────────────────────────────────────────────────────────

    @staticmethod
    def create_neon_button(parent, text, command=None, color=None, **kwargs):
        """Neon button with colored border glow."""
        fg   = color or CyberpunkTheme.TERTIARY
        # Hover brightens toward PRIMARY cyan
        hover = CyberpunkTheme.PRIMARY if fg != CyberpunkTheme.PRIMARY else CyberpunkTheme.SECONDARY
        font = kwargs.pop("font", ("Consolas", 13, "bold"))
        btn = ctk.CTkButton(
            parent,
            text=text,
            command=command,
            fg_color=fg,
            hover_color=hover,
            border_width=1,
            border_color=CyberpunkTheme.PRIMARY,
            text_color=CyberpunkTheme.TEXT_PRIMARY,
            font=font,
            corner_radius=4,
            **kwargs,
        )
        return btn

    @staticmethod
    def apply_focus_glow(entry_widget):
        """Add cyan glow on focus to any CTkEntry widget."""
        entry_widget.bind(
            "<FocusIn>",
            lambda _: entry_widget.configure(border_color=CyberpunkTheme.PRIMARY),
        )
        entry_widget.bind(
            "<FocusOut>",
            lambda _: entry_widget.configure(border_color=CyberpunkTheme.BORDER),
        )
        return entry_widget

    @staticmethod
    def create_neon_entry(parent, placeholder="", width=200, **kwargs):
        """Entry with neon border that brightens on focus."""
        entry = ctk.CTkEntry(
            parent,
            placeholder_text=placeholder,
            width=width,
            fg_color=CyberpunkTheme.BG_DARK,
            border_color=CyberpunkTheme.BORDER,
            text_color=CyberpunkTheme.TEXT_PRIMARY,
            placeholder_text_color=CyberpunkTheme.TEXT_DIM,
            font=("Consolas", 12),
            corner_radius=4,
            **kwargs,
        )
        # Subtle focus glow: swap border color on focus/unfocus
        entry.bind("<FocusIn>",  lambda _: entry.configure(border_color=CyberpunkTheme.PRIMARY))
        entry.bind("<FocusOut>", lambda _: entry.configure(border_color=CyberpunkTheme.BORDER))
        return entry

    @staticmethod
    def create_neon_label(parent, text, font_size=12, color=None, **kwargs):
        return ctk.CTkLabel(
            parent,
            text=text,
            text_color=color or CyberpunkTheme.TEXT_PRIMARY,
            font=("Consolas", font_size),
            **kwargs,
        )

    @staticmethod
    def create_section_header(parent, text):
        """
        Sleek section header: full-width rule with a neon left accent and
        uppercase monospace label.
        """
        outer = ctk.CTkFrame(parent, fg_color="transparent", height=34)
        outer.pack(fill="x", pady=(14, 4))
        outer.pack_propagate(False)

        # Neon left accent bar
        accent = ctk.CTkFrame(outer, fg_color=CyberpunkTheme.PRIMARY, width=3, corner_radius=0)
        accent.pack(side="left", fill="y", padx=(0, 10))

        label = ctk.CTkLabel(
            outer,
            text=text.upper(),
            text_color=CyberpunkTheme.PRIMARY,
            font=("Consolas", 11, "bold"),
        )
        label.pack(side="left", anchor="center")

        # Trailing dim rule that fills the rest of the width
        rule = ctk.CTkFrame(outer, fg_color=CyberpunkTheme.BORDER, height=1)
        rule.pack(side="left", fill="x", expand=True, padx=(10, 0), pady=(1, 0))

        return outer

    @staticmethod
    def create_status_bar(parent):
        """
        Bottom status bar: dark strip with a thin colored top-border for depth.
        """
        wrapper = ctk.CTkFrame(parent, fg_color=CyberpunkTheme.BG_DARK, height=30)
        wrapper.pack(side="bottom", fill="x")
        wrapper.pack_propagate(False)

        # Thin top accent line
        top_rule = ctk.CTkFrame(wrapper, fg_color=CyberpunkTheme.BORDER, height=1)
        top_rule.pack(fill="x", side="top")

        # Blinking status dot + text
        dot = ctk.CTkLabel(
            wrapper,
            text="●",
            text_color=CyberpunkTheme.PRIMARY,
            font=("Consolas", 10),
        )
        dot.pack(side="left", padx=(8, 2))

        status_label = ctk.CTkLabel(
            wrapper,
            text="SYSTEM READY",
            text_color=CyberpunkTheme.TEXT_DIM,
            font=("Consolas", 10),
        )
        status_label.pack(side="left")

        # Animate the dot — alternate PRIMARY ↔ dim every 900ms
        def _blink():
            try:
                current = dot.cget("text_color")
                next_color = (
                    CyberpunkTheme.TEXT_DIM
                    if current == CyberpunkTheme.PRIMARY
                    else CyberpunkTheme.PRIMARY
                )
                dot.configure(text_color=next_color)
                wrapper.after(900, _blink)
            except Exception:
                pass

        wrapper.after(900, _blink)
        return wrapper, status_label