import json
import logging
import os
from pathlib import Path

from config import STATE_FILE

logger = logging.getLogger(__name__)

_DEFAULTS = {
    "status": "idle",
    "last_check": None,
    "available_updates": [],
    "pending_restart": [],
    "installed_history": [],
    "errors": [],
}


def load() -> dict:
    if not STATE_FILE.exists():
        return dict(_DEFAULTS)
    try:
        with open(STATE_FILE) as f:
            data = json.load(f)
        for k, v in _DEFAULTS.items():
            data.setdefault(k, v)
        return data
    except Exception as e:
        logger.error(f"Impossible de charger l'état : {e}")
        return dict(_DEFAULTS)


def save(state: dict) -> None:
    STATE_FILE.parent.mkdir(parents=True, exist_ok=True)
    try:
        tmp = STATE_FILE.with_suffix(".tmp")
        with open(tmp, "w") as f:
            json.dump(state, f, indent=2, default=str)
        tmp.replace(STATE_FILE)
        os.chmod(STATE_FILE, 0o644)  # Lisible par tous pour l'interface utilisateur
    except Exception as e:
        logger.error(f"Impossible de sauvegarder l'état : {e}")