"""Application composition root."""

from __future__ import annotations

import tkinter as tk

from .gui import ColorPickerMixin, ExclusionMixin, ThemeMixin, UIBuilderMixin
from .i18n import I18nMixin
from .logic import DEFAULTS, LANGUAGE, ImageProcessingMixin, ResetMixin


class ICRAApp(
    I18nMixin,
    ThemeMixin,
    UIBuilderMixin,
    ImageProcessingMixin,
    ExclusionMixin,
    ColorPickerMixin,
    ResetMixin,
):
    """Tkinter based application for isolating configurable colour ranges."""

    def __init__(self, root: tk.Tk):
        self.root = root
        self.init_i18n(LANGUAGE)
        self.root.title(self._t("app.title"))
        self._setup_window()

        # Theme and styling
        self.init_theme()

        # Tkinter state variables
        self.DEFAULTS = DEFAULTS.copy()
        self.hue_min = tk.DoubleVar(value=self.DEFAULTS["hue_min"])
        self.hue_max = tk.DoubleVar(value=self.DEFAULTS["hue_max"])
        self.sat_min = tk.DoubleVar(value=self.DEFAULTS["sat_min"])
        self.val_min = tk.DoubleVar(value=self.DEFAULTS["val_min"])
        self.val_max = tk.DoubleVar(value=self.DEFAULTS["val_max"])
        self.alpha = tk.IntVar(value=self.DEFAULTS["alpha"])
        self.ref_hue = None

        # Debounce for heavy preview updates
        self.update_delay_ms = 400
        self._update_job = None

        # Exclusion rectangles (preview coordinates)
        self.exclude_rects: list[tuple[int, int, int, int]] = []
        self._rubber_start = None
        self._rubber_id = None
        self.pick_mode = False

        # Image references
        self.image_path = None
        self.orig_img = None
        self.preview_img = None
        self.preview_tk = None
        self.overlay_tk = None
        self.image_paths = []
        self.current_image_index = -1

        # Build UI
        self.setup_ui()
        self._init_copy_menu()
        self.bring_to_front()

    def _setup_window(self) -> None:
        self.root.overrideredirect(True)
        screen_width = self.root.winfo_screenwidth()
        screen_height = self.root.winfo_screenheight()
        self.root.geometry(f"{screen_width}x{screen_height}+0+0")
        self.root.configure(bg="#f2f2f7")


def start_app() -> None:
    """Entry point used by the CLI script."""
    root = tk.Tk()
    app = ICRAApp(root)
    root.mainloop()


__all__ = ["ICRAApp", "start_app"]