import logging
import sys

import torch


def get_torch_device():
    return torch.device("cuda" if torch.cuda.is_available() else "cpu")


def register_logger(log_file=None, stdout=True):
    log = logging.getLogger()  # root logger
    for hdlr in log.handlers[:]:  # remove all old handlers
        log.removeHandler(hdlr)

    handlers = []

    if stdout:
        handlers.append(logging.StreamHandler(stream=sys.stdout))

    if log_file is not None:
        handlers.append(logging.FileHandler(log_file))

    logging.basicConfig(format="%(asctime)s %(message)s",
                        handlers=handlers,
                        level=logging.INFO,
                        )
    logging.root.setLevel(logging.INFO)