import sys
from typing import Callable


def action(method: Callable) -> Callable:
    method.__action__ = True
    return method


class ActionRunner:
    def __call__(self, default_method: str | Callable = None):
        if len(sys.argv) > 1:
            method = self._resolve_method(sys.argv[1])
            action_args = self._resolve_action_args(sys.argv[2:])
        elif default_method is None:
            method = self.print_actions
            action_args = {}
        elif callable(default_method):
            method = default_method
            action_args = {}
        else:
            method = self._resolve_method(default_method)
            action_args = {}

        if method:
            method(**action_args)
        else:
            raise ValueError("没有指定要执行的方法")

    def print_actions(self):
        print(f"可用动作: {', '.join(self._action_names())}")

    def _action_names(self) -> list[str]:
        names = []
        for runner_class in reversed(self.__class__.mro()):
            for name, method in runner_class.__dict__.items():
                if getattr(method, "__action__", False):
                    names.append(name)
        return names

    def _resolve_method(self, method_name: str) -> Callable:
        method = getattr(self, method_name, None)
        if method is None:
            raise ValueError(f"没有找到对应的方法：{method_name}")
        return method

    def _resolve_action_args(self, args: list[str]) -> dict:
        action_args = {}
        for arg in args:
            if "=" in arg:
                name, value = arg.split("=", 1)
                action_args[name] = value
            else:
                action_args[arg] = True
        return action_args