import logging
import os
import sys


def setup_logger(log_file="logs/runtime.log"):
    # 确保日志目录存在
    os.makedirs(os.path.dirname(log_file), exist_ok=True)

    logger = logging.getLogger("NEP_Auto")
    logger.setLevel(logging.INFO)

    # 避免重复添加 handler
    if logger.handlers:
        return logger

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

    # 文件输出
    fh = logging.FileHandler(log_file, mode='a', encoding='utf-8')
    fh.setFormatter(formatter)
    logger.addHandler(fh)

    # 屏幕输出
    ch = logging.StreamHandler(sys.stdout)
    ch.setFormatter(formatter)
    logger.addHandler(ch)

    return logger