import enum

from typing import Callable

from nntp.tiny.newsgroup import Newsgroup

class ServerCapability(enum.Flag):
    NONE = 0
    AUTH = enum.auto()
    POST = enum.auto()

class Server():
    def __init__(self, connect_to_db: Callable):
        self.connect_to_db = connect_to_db
        self.capabilities  = ServerCapability.NONE
        self.newsgroups    = dict()

        self._init_newsgroups()

    def _init_newsgroups(self):
        db = self.connect_to_db()

        for newsgroup in db.query(Newsgroup).each():
            self.newsgroups[newsgroup.name.casefold()] = newsgroup