from libp2p.routing.interfaces import IPeerRouting
from libp2p.kademlia.utils import digest
from libp2p.peer.peerinfo import PeerInfo
from libp2p.peer.peerdata import PeerData


class KadmeliaPeerRouter(IPeerRouting):
    # pylint: disable=too-few-public-methods

    def __init__(self, dht_server):
        self.server = dht_server

    async def find_peer(self, peer_id):
        """
        Find specific Peer
        FindPeer searches for a peer with given peer_id, returns a peer.PeerInfo
        with relevant addresses.
        """
        # switching peer_id to xor_id used by kademlia as node_id
        xor_id = peer_id.get_xor_id()
        value = await self.server.get(xor_id)
        return value

# def decode_peerinfo(encoded):
#     if isinstance(encoded, bytes):
#         encoded = encoded.decode()
#     lines = encoded.splitlines()
#     peer_id = lines[0]
#     addrs = lines[1:]
#     peer_data = PeerData()
#     peer_data.add_addrs(addrs)
#     return PeerInfo(peer_id, addrs)