import spotipy
from spotipy.oauth2 import SpotifyOAuth
from fastapi import HTTPException
from app.config import settings

_oauth = SpotifyOAuth(
    client_id=settings.SPOTIFY_CLIENT_ID,
    client_secret=settings.SPOTIFY_CLIENT_SECRET,
    redirect_uri=settings.SPOTIFY_REDIRECT_URI,
    scope=settings.SPOTIFY_SCOPES,
    cache_path="data/.spotify_cache",
    open_browser=False,
)


def get_auth_url() -> str:
    return _oauth.get_authorize_url()


def exchange_code(code: str) -> dict:
    return _oauth.get_access_token(code, as_dict=True, check_cache=False)


def get_client() -> spotipy.Spotify:
    token_info = _oauth.get_cached_token()
    if not token_info:
        raise HTTPException(status_code=401, detail="spotify_not_authenticated")
    if _oauth.is_token_expired(token_info):
        token_info = _oauth.refresh_access_token(token_info["refresh_token"])
    return spotipy.Spotify(auth=token_info["access_token"])


def is_authenticated() -> bool:
    try:
        token_info = _oauth.get_cached_token()
        return token_info is not None
    except Exception:
        return False