from typing import Generic, TypeVar

from .asserts import *
from .hashpoint import *
from .origin import *
from .rainbow_factory import *

__all__ = ('MetaOrigin',)

Mentioned = TypeVar('Mentioned')


class MetaOrigin(Generic[Mentioned]):
    def origin(self, factory: RainbowFactory[Mentioned], point: bytes) -> Origin[Mentioned]:
        raise NotImplementedError

    def hash_point(self, factory: RainbowFactory[Mentioned], point: bytes) -> HashPoint[Mentioned]:
        assert isinstance(factory, RainbowFactory)
        assert isinstance(point, bytes)
        assert_eq(len(point), HashPoint.HASH_LENGTH)
        return HashPoint(point, self.origin(factory, point))