from pathlib import Path
from dataclasses import dataclass
from argparse import ArgumentParser
from typing import List
from os import getenv
from sys import argv
from xdg.BaseDirectory import xdg_cache_home


@dataclass
class Config:
    cache_file: Path = Path(xdg_cache_home) / Path("spotify-shortcuts.json")
    client_id: str | None = None
    client_secret: str | None = None


def load_config(args: List[str] = argv[1:]) -> Config:
    parser = ArgumentParser(description="Spotify CLI Tool")
    parser.add_argument(
        "--cache-file",
        type=Path,
        default=Config.cache_file,
        help="Path to the cache file for Spotify authentication",
    )
    parser.add_argument(
        "--client-id",
        type=str,
        default=Config.client_id,
        help="Spotify API Client ID",
    )
    parser.add_argument(
        "--client-secret",
        type=str,
        default=Config.client_secret,
        help="Spotify API Client Secret",
    )

    ns = parser.parse_args(args)

    cfg = Config(
        cache_file=ns.cache_file,
        client_id=ns.client_id,
        client_secret=ns.client_secret,
    )

    return Config(
        cache_file=Path(getenv("SPOTIFY_SHORTCUTS_CACHE_FILE", cfg.cache_file)),
        client_id=getenv("SPOTIFY_SHORTCUTS_CLIENT_ID", cfg.client_id),
        client_secret=getenv("SPOTIFY_SHORTCUTS_CLIENT_SECRET", cfg.client_secret),
    )