FTP Report Downloader

def download_report(ftp_conn_id: str, remote_filepath: str, local_filepath: str) -> str:
    """
    Downloads a single report file from an FTP server to the local filesystem.

    Args:
        ftp_conn_id: Airflow connection ID for the FTP server
        remote_filepath: Path to the file on the remote FTP server
        local_filepath: Path where the file should be saved locally

    Returns:
        The local file path where the report was saved

    Raises:
        Exception: If the remote file does not exist or download fails
    """
    pass

def download_reports_batch(ftp_conn_id: str, remote_filepaths: list, local_filepaths: list) -> list:
    """
    Downloads multiple report files from an FTP server in a single operation.

    Args:
        ftp_conn_id: Airflow connection ID for the FTP server
        remote_filepaths: List of paths to files on the remote FTP server
        local_filepaths: List of paths where files should be saved locally

    Returns:
        List of local file paths where the reports were saved

    Raises:
        ValueError: If the lengths of remote_filepaths and local_filepaths don't match
        Exception: If any file download fails
    """
    pass

def download_report_with_dirs(ftp_conn_id: str, remote_filepath: str, local_filepath: str) -> str:
    """
    Downloads a report file from an FTP server, automatically creating any
    necessary parent directories in the local filesystem.

    Args:
        ftp_conn_id: Airflow connection ID for the FTP server
        remote_filepath: Path to the file on the remote FTP server
        local_filepath: Path where the file should be saved locally (may be nested)

    Returns:
        The local file path where the report was saved
    """
    pass