from functools import reduce


class HookException(Exception):
    pass


class HookMan:
    hooks = {}

    def __new__(cls):
        return reduce(lambda x, y: y(x), cls.hooks, super(HookMan, cls).__new__(cls))

    def execute_hooks(self, hook_type, *args, **kwargs):
        if hook_type not in self.hooks:
            return

        for hook in self.hooks[hook_type]:
            print(f"Executing hook {hook.__name__}")
            try:
                hook()(*args, **kwargs)
            except Exception as exc:
                raise HookException(exc)

    @classmethod
    def add_hook(cls, func, *args, **kwargs):
        """Adds a hook."""
        hook_type = func.hook_type
        if hook_type in cls.hooks:
            cls.hooks[hook_type] = cls.hooks[hook_type] + [func]
        else:
            cls.hooks[hook_type] = [func]


hook = HookMan()

# @hook.add_hook
# class example_hook:
# """Example hook."""
# hook_type = "player_login"
#
# def __call__(self, *args, **kwargs):
#     print("Hook player_login,", kwargs)
#
#
hook.execute_hooks("player_login", hello="john")