import logging
import os
import sys


def get_base_dir() -> str:
    if getattr(sys, "frozen", False):
        return os.path.dirname(sys.executable)
    return os.path.dirname(os.path.abspath(sys.argv[0]))


def setup_logger() -> logging.Logger:
    log_file = os.path.join(get_base_dir(), "app.log")

    logging.basicConfig(
        level=logging.INFO,
        format="%(asctime)s [%(levelname)s] %(name)s: %(message)s",
        handlers=[
            logging.FileHandler(log_file, encoding="utf-8"),
            logging.StreamHandler(),
        ],
    )

    logger = logging.getLogger(__name__)
    logger.info("日志系统初始化完成: %s", log_file)
    return logger