jw-pkg/src/python/jw/pkg/cmds/distro/Cmd.py

# -*- coding: utf-8 -*-

import os, importlib

from ..Cmd import Cmd as Base
from ..CmdDistro import CmdDistro

class Cmd(Base): # export

    def __init__(self, parent: CmdDistro, name: str, help: str) -> None:
        super().__init__(parent, name, help)
        self.__backend = None

    @property
    def distro_id(self) -> str:
        return self.parent.distro_id

    @property
    def interactive(self) -> bool:
        return self.parent.interactive

    @property
    def _backend(self):
        if self.__backend is None:
            class_name = self.__class__.__name__[3:] # Get rid of "Cmd"
            backend_id = self.parent.distro_id.lower().replace('-', '_')
            match backend_id:
                case 'ubuntu' | 'raspbian' | 'kali':
                    backend_id = 'debian'
                case 'centos':
                    backend_id = 'redhat'
                case 'opensuse_tumbleweed':
                    backend_id = 'suse'
            module_name = (
                os.path.splitext(__name__)[0]
                + '.backend.'
                + backend_id
                + '.'
                + class_name
            )
            module = importlib.import_module(module_name)
            cls = getattr(module, class_name)
            self.__backend = cls(self)
        return self.__backend