def setup_argparse():
    # create top level parser
    root_parser = argparse.ArgumentParser(prog='iottb')
    # shared options
    root_parser.add_argument('--verbose', '-v', action='count', default=0)
    root_parser.add_argument('--script-mode', action='store_true', help='Run in script mode (non-interactive)')
    # Group of args w.r.t iottb.db creation
    group = root_parser.add_argument_group('database options')
    group.add_argument('--db-home', default=Path.home() / 'IoTtb.db')
    group.add_argument('--config-home', default=Path.home() / '.config' / 'iottb.conf', type=Path, )
    group.add_argument('--user', default=Path.home().stem, type=Path, )

    # configure subcommands
    subparsers = root_parser.add_subparsers(title='subcommands', required=True, dest='command')
    # setup_capture_parser(subparsers)
    setup_init_device_root_parser(subparsers)
    setup_sniff_parser(subparsers)
    # Utility to list interfaces directly with iottb instead of relying on external tooling

    interfaces_parser = subparsers.add_parser('list-interfaces', aliases=['li', 'if'],
                                              help='List available network interfaces.')
    interfaces_parser.set_defaults(func=list_interfaces)

    return root_parser