import logging
import getpass


def setup_logger():
    logger = logging.getLogger()
    logger.setLevel(logging.INFO)

    formatter = logging.Formatter("%(asctime)s - User: %(user)s - %(message)s")

    file_handler = logging.FileHandler("/var/log/postinstall.log")
    file_handler.setFormatter(formatter)

    class UserFilter(logging.Filter):
        def filter(self, record):
            record.user = getpass.getuser()
            return True

    file_handler.addFilter(UserFilter())
    logger.addHandler(file_handler)

    return logger


logger = setup_logger()