import io
import pathlib
import os
import re
import tomlkit

from cliff.command import Command


class Base(Command):
    def get_parser(self, prog_name):
        parser = super().get_parser(prog_name)
        parser.add_argument(
            '--doom', default=pathlib.Path.home().joinpath("doom"))
        parser.add_argument('--config-name', default='config.toml')
        return parser

    def init_base(self, parsed_args):
        self._doom = pathlib.Path(parsed_args.doom)
        self._config_name = parsed_args.config_name
        self._config = tomlkit.toml_file.TOMLFile(
            self.doom.joinpath(self.config_name)).read()
        self._dsda = self._config.get("dsda")
        if self.dsda is None:
            raise Exception(
                "required key 'dsda' not set in config "
                + f"{self.doom.joinpath(self.config_name)}.")
        for d in ("iwads", "pwads", "demos", "fabricate"):
            self._init_attr(d, d, fn=self.doom.joinpath)

        self._init_attr("thumbnail.height", 1280)
        self._init_attr("thumbnail.width", 720)
        self._init_attr("thumbnail.font", None)
        self._init_attr("thumbnail.text_fill", "white")
        self._init_attr("thumbnail.text_stroke", "red")
        self._init_attr("fetch.mirror", "https://youfailit.net/pub/idgames")

    def run(self, parsed_args):
        self.init_base(parsed_args)
        self.take_action(parsed_args)

    def _init_attr(self, what, default, fn=lambda x: x):
        what = what.replace(".", "_")
        setattr(
            self, f"_{what}", fn(self._config.get(what, default)))
        setattr(
            type(self), what, property(lambda self: getattr(self, f"_{what}")))

    @property
    def doom(self):
        return self._doom

    @property
    def config_name(self):
        return self._config_name

    @property
    def dsda(self):
        return self._doom.joinpath(self._dsda)