import logging
import os
from datetime import datetime


def setup_logger(name: str, log_dir: str, rank: int = 0) -> logging.Logger:
    os.makedirs(log_dir, exist_ok=True)
    logger = logging.getLogger(name)
    logger.setLevel(logging.INFO if rank == 0 else logging.WARNING)
    logger.handlers.clear()
    formatter = logging.Formatter("%(asctime)s - %(name)s - %(levelname)s - %(message)s")
    if rank == 0:
        file_handler = logging.FileHandler(os.path.join(log_dir, f"{name}_{datetime.now().strftime('%Y%m%d_%H%M%S')}.log"))
        file_handler.setFormatter(formatter)
        console_handler = logging.StreamHandler()
        console_handler.setFormatter(formatter)
        logger.addHandler(file_handler)
        logger.addHandler(console_handler)
    return logger