from abc import ABC, abstractmethod


class CoreAdapter(ABC):
    @abstractmethod
    def add_subscriber(self, imsi: str, ki: str, opc: str) -> None:
        """Add a subscriber to the core network. ki and opc are hex strings."""

    @abstractmethod
    def remove_subscriber(self, imsi: str) -> None:
        """Remove a subscriber from the core network."""

    @abstractmethod
    def list_subscribers(self) -> list:
        """Return a list of subscriber dicts from the core."""