from abc import abstractmethod
from typing import List, Sequence

from .addrbook_interface import IAddrBook
from .id import ID
from .peerinfo import PeerInfo
from .peermetadata_interface import IPeerMetadata


class IPeerStore(IAddrBook, IPeerMetadata):
    def __init__(self) -> None:
        IPeerMetadata.__init__(self)
        IAddrBook.__init__(self)

    @abstractmethod
    def peer_info(self, peer_id: ID) -> PeerInfo:
        """
        :param peer_id: peer ID to get info for
        :return: peer info object
        """

    @abstractmethod
    def get_protocols(self, peer_id: ID) -> List[str]:
        """
        :param peer_id: peer ID to get protocols for
        :return: protocols (as strings)
        :raise Exception: peer ID not found exception
        """

    @abstractmethod
    def add_protocols(self, peer_id: ID, protocols: Sequence[str]) -> None:
        """
        :param peer_id: peer ID to add protocols for
        :param protocols: protocols to add
        :raise Exception: peer ID not found
        """

    @abstractmethod
    def set_protocols(self, peer_id: ID, protocols: Sequence[str]) -> None:
        """
        :param peer_id: peer ID to set protocols for
        :param protocols: protocols to set
        :raise Exception: peer ID not found
        """

    @abstractmethod
    def peer_ids(self) -> List[ID]:
        """
        :return: all of the peer IDs stored in peer store
        """