from typing import Dict, Optional, List

from .method import Method


class ContainerMatch:
    __slots__ = ('by_name', )

    by_name: str

    def __init__(self, by_name: str) -> None:
        self.by_name = by_name

    def __repr__(self) -> str:
        return f'ContainerMatch({repr(self.by_name)})'


class Service:
    __slots__ = ('name', 'container_match', 'methods', )

    name: str
    container_match: ContainerMatch
    methods: Dict[str, Method]

    def __init__(self, name: str, container_match: ContainerMatch, methods: List[Method]) -> None:
        self.name = name
        self.container_match = container_match
        self.methods = {
            x.name: x
            for x in methods
        }

    def __repr__(self) -> str:
        return f'Service({repr(self.name)}, {repr(self.container_match)}, {repr(list(self.methods.values()))})'


class ServiceDiscoveryInterface:
    def find_service(self, name: str) -> Optional[Service]:
        raise NotImplementedError