import logging
import sys
from pathlib import Path


def setup_logger(name: str = 'dy-downloader', level: int = logging.INFO, log_file: str = None) -> logging.Logger:
    logger = logging.getLogger(name)
    logger.setLevel(level)

    if logger.handlers:
        return logger

    formatter = logging.Formatter(
        '%(asctime)s - %(name)s - %(levelname)s - %(message)s',
        datefmt='%Y-%m-%d %H:%M:%S'
    )

    console_handler = logging.StreamHandler(sys.stdout)
    console_handler.setLevel(level)
    console_handler.setFormatter(formatter)
    logger.addHandler(console_handler)

    if log_file:
        log_path = Path(log_file)
        log_path.parent.mkdir(parents=True, exist_ok=True)
        file_handler = logging.FileHandler(log_file, encoding='utf-8')
        file_handler.setLevel(level)
        file_handler.setFormatter(formatter)
        logger.addHandler(file_handler)

    return logger