import logging
from sys import stdout

from typing import Optional
from logging import Logger as BuiltinLogger


class Logger:
    _instance: Optional[BuiltinLogger] = None

    @staticmethod
    def get_logger():
        if Logger._instance is None:
            logger = logging.getLogger(__name__)
            logger.setLevel(logging.DEBUG)

            sh = logging.StreamHandler(stdout)
            formatter = logging.Formatter('%(asctime)s - %(name)s - %(levelname)s - %(message)s')
            sh.setFormatter(formatter)
            logger.addHandler(sh)

            Logger._instance = logger

        return Logger._instance