"""Definition of put function."""

import logging
from io import BytesIO

from minio import Minio


def put(
    client: Minio,
    buffer: BytesIO,
    bucket_name: str,
    object_name: str,
) -> None:
    """Put buffer in bucket in MinIO and return MD5 checksum as object name."""
    assert isinstance(client, Minio)
    assert isinstance(buffer, BytesIO)
    assert isinstance(bucket_name, str)
    assert len(bucket_name) > 0
    assert isinstance(object_name, str)
    assert len(object_name) > 0
    # prepare for saving
    num_bytes = len(buffer.getvalue())
    buffer.seek(0)
    # send data to bucket
    try:
        client.put_object(
            bucket_name=bucket_name,
            object_name=object_name,
            length=num_bytes,
            data=buffer,
        )
    except Exception as exc:
        logging.error('failed saving data to MinIO')
        raise exc
    logging.debug('saved data to %s', object_name)