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from dataclasses import dataclass
import logging
import os
from typing import Dict, List

from swiftstory.exception import UnsupportedLanguage
from swiftstory.game import Game
from swiftstory.cards import Cards


@dataclass
class LangContainer:
    """ Container for game ojects in a given language. """
    black_cards: List[str]
    white_cards: List[str]
    games: Dict[str, Game]


class GameManager:

    def __init__(self) -> None:
        self.lang_containers: Dict[str, LangContainer] = {}

        for language in self.list_languages():
            self.lang_containers[language] = LangContainer(
                black_cards=Cards.get_black_cards(language),
                white_cards=Cards.get_white_cards(language),
                games={}
            )

    def list_languages(self) -> List[str]:
        """ List available languages based on FS. """
        return next(os.walk("usr/share/swiftstory/lang"))[1]

    def join_game(self, game_name: str, lang: str) -> Game:
        container = self.lang_containers.get(lang)
        if container is None:
            raise UnsupportedLanguage(lang)

        games = container.games
        black_cards = container.black_cards
        white_cards = container.white_cards

        game = games.get(game_name)

        if game is None:
            logging.info("Starting new game: %s (lang: %s)", game_name, lang)

            game = games[game_name] = Game(white_cards, black_cards)

        return game