import json
import os
import shutil
from pathlib import Path

RACINE = Path(__file__).resolve().parent.parent
CHEMIN_CONFIG = RACINE / "data" / "config.json"
CHEMIN_CONFIG_DEFAUT = RACINE / "data" / "config.defaut.json"
DOSSIER_PHOTOS = RACINE / "data" / "photos"
DOSSIER_EXPORTS = RACINE / "data" / "exports"
DOSSIER_OVERLAYS = RACINE / "frontend" / "assets" / "overlays"
DOSSIER_FONDS = RACINE / "frontend" / "assets" / "backgrounds"
DOSSIER_ANIMATIONS = RACINE / "frontend" / "assets" / "animations"


def charger_config() -> dict:
    """Charge la configuration depuis config.json."""
    if not CHEMIN_CONFIG.exists():
        if CHEMIN_CONFIG_DEFAUT.exists():
            shutil.copy(CHEMIN_CONFIG_DEFAUT, CHEMIN_CONFIG)
        else:
            return {}
    with open(CHEMIN_CONFIG, "r", encoding="utf-8") as f:
        return json.load(f)


def sauvegarder_config(config: dict):
    """Sauvegarde la configuration dans config.json."""
    CHEMIN_CONFIG.parent.mkdir(parents=True, exist_ok=True)
    with open(CHEMIN_CONFIG, "w", encoding="utf-8") as f:
        json.dump(config, f, ensure_ascii=False, indent=2)


def mettre_a_jour_config(modifications: dict) -> dict:
    """Met a jour la configuration avec les modifications fournies (merge profond)."""
    config = charger_config()
    _merge_profond(config, modifications)
    sauvegarder_config(config)
    return config


def _merge_profond(base: dict, modifications: dict):
    """Fusionne recursivement les modifications dans la base."""
    for cle, valeur in modifications.items():
        if cle in base and isinstance(base[cle], dict) and isinstance(valeur, dict):
            _merge_profond(base[cle], valeur)
        else:
            base[cle] = valeur


# Initialisation des dossiers au chargement du module
for dossier in [DOSSIER_PHOTOS, DOSSIER_EXPORTS, DOSSIER_OVERLAYS, DOSSIER_FONDS, DOSSIER_ANIMATIONS]:
    dossier.mkdir(parents=True, exist_ok=True)