"""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, RESET_EXCLUSIONS_ON_IMAGE_CHANGE, 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_shapes: list[dict[str, object]] = []
        self._rubber_start = None
        self._rubber_id = None
        self._stroke_preview_id = None
        self.exclude_mode = "rect"
        self.reset_exclusions_on_switch = RESET_EXCLUSIONS_ON_IMAGE_CHANGE
        self._exclude_mask = None
        self._exclude_mask_dirty = True
        self._exclude_mask_px = None
        self._exclude_canvas_ids: list[int] = []
        self._current_stroke: list[tuple[int, int]] | None = None
        self.free_draw_width = 14
        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"]