from __future__ import annotations

from .Cmd import Cmd, Parent
from typing import TYPE_CHECKING, override

if TYPE_CHECKING:
    from argparse import ArgumentParser, Namespace

class CmdCommands(Cmd):  # export

    def __init__(self, parent: Parent) -> None:
        super().__init__(parent, 'commands', help = 'List available commands')

    @override
    def add_arguments(self, parser: ArgumentParser) -> None:
        super().add_arguments(parser)

    @override
    async def _run(self, args: Namespace) -> None:
        import glob
        import os
        import re

        this_dir = os.path.dirname(__file__)
        ret = []
        for file_name in glob.glob('Cmd*.py', root_dir = this_dir):
            cc_name = re.sub(r'^Cmd|\.py', '', file_name)
            name = re.sub(r'(?<!^)(?=[A-Z])', '-', cc_name).lower()
            ret.append(name)
        print(' '.join(ret))