import logging
from pathlib import Path
from typing import Optional


LOGGER_NAME = "serato_doctor"
LOG_FORMAT = "%(asctime)s %(levelname)s %(message)s"


def configure_logging(
    verbose: bool = False, log_file: Optional[Path] = None
) -> logging.Logger:
    """Configure isolated application logging and return the project logger."""

    logger = logging.getLogger(LOGGER_NAME)
    logger.setLevel(logging.DEBUG)
    logger.propagate = False

    for handler in logger.handlers[:]:
        handler.close()
        logger.removeHandler(handler)

    formatter = logging.Formatter(LOG_FORMAT)

    if verbose:
        console = logging.StreamHandler()
        console.setLevel(logging.DEBUG)
        console.setFormatter(formatter)
        logger.addHandler(console)

    if log_file is not None:
        file_handler = logging.FileHandler(log_file, encoding="utf-8")
        file_handler.setLevel(logging.INFO)
        file_handler.setFormatter(formatter)
        logger.addHandler(file_handler)

    if not logger.handlers:
        logger.addHandler(logging.NullHandler())

    return logger