import os
import json
import mysql.connector
from util.logger import logger

CONFIG_PATH = "config/db_config.json"

def is_configured():
    return os.path.exists(CONFIG_PATH)

def load_config():
    try:
        with open(CONFIG_PATH, "r") as file:
            return json.load(file)
    except Exception as e:
        logger.error(f"[DB-Config] Fehler beim Laden: {e}")
        return None

def save_config(config):
    try:
        os.makedirs("config", exist_ok=True)
        with open(CONFIG_PATH, "w") as file:
            json.dump(config, file, indent=2)
        logger.info("[DB-Config] Konfiguration gespeichert.")
    except Exception as e:
        logger.error(f"[DB-Config] Fehler beim Speichern: {e}")

def test_connection(config) -> bool:
    try:
        conn = mysql.connector.connect(**config)
        conn.close()
        return True
    except Exception as e:
        logger.warning(f"[DB-Check] Verbindung fehlgeschlagen: {e}")
        return False