Golangs new integrators came in handy for request pagination. I know the code is not optimal but is very readable and it is just for a proof of concept. I am try to get Spotify metadata in bulk. Hopefully I won’t get IP banned, fingers crossed.

for chunk := range slices.Chunk(allSimpleTracks, 100) {
	ids := make([]spotify.ID, len(chunk))
	for i, a := range chunk {
		ids[i] = a.ID
	}

	f, err := client.GetAudioFeatures(ctx, ids...)
	if err != nil {
		return nil, err
	}

	fullTracks := make([]*spotify.FullTrack, len(ids))
	for subChunk := range slices.Chunk(ids, 50) {
		full, err := client.GetTracks(ctx, subChunk, spotify.Limit(50))
		if err != nil {
			return nil, err
		}
		fullTracks = append(fullTracks, full...)
	}
	for i := range len(ids) {
		allTracks[i] = &FullerTrack{
			Track:    fullTracks[i],
			Features: f[i],
		}
	}
}