import { getApiBaseUrl } from '../../config/runtime-config';

/**
 * Audio stream URL for the `<audio>` element. The access token rides as a query
 * param because `<audio>` can't send an `Authorization` header; the backend
 * accepts `?token=` on `GET /stream/{id}` for exactly this reason.
 */
export function getStreamUrl(
  trackId: string,
  token: string,
  quality?: string,
): string {
  const base = getApiBaseUrl();
  const q =
    quality && quality !== 'original'
      ? `&quality=${encodeURIComponent(quality)}`
      : '';
  return `${base}/stream/${trackId}?token=${encodeURIComponent(token)}${q}`;
}

export function getCoverUrl(artUrl: string | undefined): string | undefined {
  if (!artUrl) return undefined;
  if (artUrl.startsWith('http://') || artUrl.startsWith('https://'))
    return artUrl;
  const base = getApiBaseUrl();
  return `${base}${artUrl}`;
}

/**
 * Cover image URL for a track, served by `GET /tracks/{id}/cover`. Like the
 * audio stream, an `<img>` can't send an `Authorization` header, so the access
 * token rides as `?token=`. Returns undefined when the track has no cover.
 */
export function getTrackCoverUrl(
  trackId: string,
  token: string,
  hasCover: boolean,
): string | undefined {
  if (!hasCover) return undefined;
  const base = getApiBaseUrl();
  return `${base}/tracks/${trackId}/cover?token=${encodeURIComponent(token)}`;
}

/**
 * Cover image URL for an album, served by `GET /albums/{id}/cover`. Same
 * `?token=` rationale as the track cover. Returns undefined when the album has
 * no cover (so callers fall back to generated tile art).
 */
export function getAlbumCoverUrl(
  albumId: string,
  token: string,
  hasCover: boolean,
): string | undefined {
  if (!hasCover) return undefined;
  const base = getApiBaseUrl();
  return `${base}/albums/${albumId}/cover?token=${encodeURIComponent(token)}`;
}