import configparser
import os

class ConfigUtil:
    _config = None
    _loaded = False

    @classmethod
    def _init(cls):
        if cls._loaded:
            return
        config_path = os.path.join(os.path.dirname(__file__), '../config.ini')
        parser = configparser.ConfigParser()
        parser.read(config_path, encoding='utf-8')
        cls._config = parser
        cls._loaded = True

    @classmethod
    def get(cls, section, option, fallback=None):
        cls._init()
        return cls._config.get(section, option, fallback=fallback)

    @classmethod
    def get_list(cls, section, option, sep=',', fallback=None):
        value = cls.get(section, option, fallback)
        if value is not None:
            return [v.strip() for v in value.split(sep)]
        return fallback