import configparser
import os


FILENAME = 'settings.cfg'


class Config(object):

    def __init__(self):
        self.last_mtime = 0
        self.config = None

    def __contains__(self, item):
        return item in self.config

    def __getitem__(self, key):
        return self.config[key]

    def __getattr__(self, name):
        return getattr(self.config, name)

    def reload(self):
        config = configparser.ConfigParser()
        config.read(FILENAME)
        self.config = config

    def reload_if_needed(self):
        mtime = os.stat(FILENAME).st_mtime
        if mtime > self.last_mtime:
            self.last_mtime = mtime
            self.reload()