from configparser import ConfigParser
from os import PathLike
from pathlib import Path
from worthless.game.gameenums import Variant


class LauncherConfig:
    """
    Provides config.ini for official launcher compatibility

    You should not use this class directly, since it's automatically used by Game when needed
    """

    @staticmethod
    def create_config(game_version, variant: Variant):
        """
        Creates `config.ini`
        https://notabug.org/Krock/dawn/src/master/updater/update_gi.sh#L212
        """
        sub_channel = 0
        channel = 1
        cps = "mihoyo"
        match variant:
            case Variant.INTERNATIONAL:
                channel = 1
                sub_channel = 0
                cps = "mihoyo"
            case Variant.CHINESE:
                channel = 1
                sub_channel = 1
                cps = "mihoyo"
            case Variant.BILIBILI:
                channel = 14
                sub_channel = 0
                cps = "bilibili"
        config = ConfigParser()
        config.add_section("General")
        config.set("General", "channel", str(channel))
        config.set("General", "cps", cps)
        config.set("General", "game_version", game_version)
        config.set("General", "sdk_version", "")
        config.set("General", "sub_channel", str(sub_channel))
        return config

    def __init__(
        self, config_path: PathLike, game_version=None, variant: Variant = None
    ):
        if not variant:
            variant = Variant.INTERNATIONAL
        if not isinstance(config_path, Path):
            config_path = Path(config_path)
        if not game_version:
            game_version = "0.0.0"
        self._config_path = config_path
        self._config = ConfigParser()
        if self._config_path.exists():
            self._config.read(self._config_path)
        else:
            self._config = self.create_config(game_version, variant)

    def set_game_version(self, game_version):
        self._config.set("General", "game_version", game_version)

    def set_variant(self, variant: Variant):
        sub_channel = 0
        match variant:
            case Variant.INTERNATIONAL:
                sub_channel = 0
            case Variant.CHINESE:
                sub_channel = 1
            case Variant.BILIBILI:
                sub_channel = 0
        self._config.set("General", "sub_channel", str(sub_channel))

    def save(self):
        """
        Saves config.ini
        """
        with self._config_path.open("w") as config_file:
            self._config.write(config_file)

    def get(self, section: str, option: str, **kwargs) -> str:
        return self._config.get(section=section, option=option, **kwargs)