export function isSong(streamable: Streamable | Folder): streamable is Song {
  return streamable.type === 'songs'
}

export function isEpisode(streamable: Streamable): streamable is Episode {
  return streamable.type === 'episodes'
}

export function isRadioStation(streamable: Streamable): streamable is RadioStation {
  return streamable.type === 'radio-stations'
}

export function getPlayableCollectionContentType(playables: Playable[]): Song['type'] | Episode['type'] | 'mixed' {
  return new Set(playables.map(playable => playable.type)).size === 1 ? playables[0].type : 'mixed'
}