import logging
from logging import handlers
from typing import Optional


def get_logger(name: str, file_name: Optional[str] = None) -> logging.Logger:
    logger = logging.getLogger(name)
    if file_name is None:
        file_name = "app-default.log"
    handler = handlers.TimedRotatingFileHandler(
        filename=file_name, when="d", backupCount=21, encoding="UTF-8"
    )
    formatter = logging.Formatter("[%(asctime)s][%(levelname)s][%(message)s]")
    handler.setFormatter(formatter)
    logger.addHandler(handler)
    logger.setLevel(logging.INFO)
    # Configure the logger as desired
    # e.g., add handlers, set log levels, etc.
    return logger