"""Thèmes et palette de la GUI V6.

Mappe les tokens de couleur de la maquette ``docs/ui_mockup_v6.html`` vers
customtkinter. Lot G1 : 4 thèmes de base + helper d'application. L'import de ce
module ne crée aucun widget (compatible ``--self-test`` sans display).
"""

from __future__ import annotations

from typing import Dict

# Tokens couleur par thème (bandeau statut licence, accents, surfaces).
THEMES: Dict[str, dict] = {
    "clair": {
        "appearance": "light",
        "color_theme": "blue",
        "accent": "#2563eb",
        "ok": "#16a34a",
        "warn": "#d97706",
        "error": "#dc2626",
    },
    "sombre": {
        "appearance": "dark",
        "color_theme": "blue",
        "accent": "#3b82f6",
        "ok": "#22c55e",
        "warn": "#f59e0b",
        "error": "#ef4444",
    },
    "médical": {
        "appearance": "light",
        "color_theme": "green",
        "accent": "#0d9488",
        "ok": "#15803d",
        "warn": "#ca8a04",
        "error": "#b91c1c",
    },
    "contraste": {
        "appearance": "dark",
        "color_theme": "dark-blue",
        "accent": "#60a5fa",
        "ok": "#4ade80",
        "warn": "#fbbf24",
        "error": "#f87171",
    },
}

DEFAULT_THEME = "clair"

# Couleurs du bandeau de statut licence selon l'état métier.
STATUS_COLORS = {
    "active": "ok",
    "grace": "warn",
    "expired": "error",
    "revoked": "error",
    "invalid": "error",
    "unavailable": "warn",
    "none": "warn",
}


def theme_names() -> list[str]:
    return list(THEMES.keys())


def get_theme(name: str) -> dict:
    return THEMES.get(name, THEMES[DEFAULT_THEME])


def status_color(theme_name: str, status: str) -> str:
    """Couleur hex pour un statut licence, dans le thème donné."""
    theme = get_theme(theme_name)
    return theme[STATUS_COLORS.get(status, "warn")]


def apply_theme(name: str = DEFAULT_THEME) -> dict:
    """Applique le thème à customtkinter. Import paresseux de ctk."""
    theme = get_theme(name)
    import customtkinter as ctk

    ctk.set_appearance_mode(theme["appearance"])
    ctk.set_default_color_theme(theme["color_theme"])
    return theme