from pathlib import Path


def join_legacy_read_path(sample_path: Path, suffix: int) -> Path:
    """
    Create a path string for a sample read file using the old file naming
    convention (eg. reads_1.fastq).

    :param sample_path: the path to the sample directory
    :param suffix: the read file suffix
    :return: the read path

    """
    return sample_path / f"reads_{suffix}.fastq"