spotube/lib/services/queries/artist.dart

import 'package:collection/collection.dart';
import 'package:fl_query/fl_query.dart';
import 'package:hooks_riverpod/hooks_riverpod.dart';
import 'package:spotify/spotify.dart';
import 'package:spotube/hooks/use_spotify_infinite_query.dart';
import 'package:spotube/hooks/use_spotify_query.dart';

class ArtistQueries {
  Query<Artist, dynamic> useGetArtist(
    WidgetRef ref,
    String artist,
  ) {
    return useSpotifyQuery<Artist, dynamic>(
      "artist-profile/$artist",
      (spotify) => spotify.artists.get(artist),
      ref: ref,
    );
  }

  InfiniteQuery<CursorPage<Artist>, dynamic, String> useFollowedByMeQuery(
      WidgetRef ref) {
    return useSpotifyInfiniteQuery<CursorPage<Artist>, dynamic, String>(
      "user-following-artists",
      (pageParam, spotify) async {
        return spotify.me
            .following(FollowingType.artist)
            .getPage(15, pageParam);
      },
      initialPage: "",
      nextPage: (lastPage, pages) =>
          pages.last.isLast || (pages.last.items?.length ?? 0) < 15
              ? null
              : pages.last.after,
      ref: ref,
    );
  }

  Query<bool, dynamic> useDoIFollowQuery(
    WidgetRef ref,
    String artist,
  ) {
    return useSpotifyQuery<bool, dynamic>(
      "user-follows-artists-query/$artist",
      (spotify) async {
        final result = await spotify.me.isFollowing(
          FollowingType.artist,
          [artist],
        );
        return result.first;
      },
      ref: ref,
    );
  }

  Query<Iterable<Track>, dynamic> useTopTracksOfQuery(
    WidgetRef ref,
    String artist,
  ) {
    return useSpotifyQuery<Iterable<Track>, dynamic>(
      "artist-top-track-query/$artist",
      (spotify) {
        return spotify.artists.getTopTracks(artist, "US");
      },
      ref: ref,
    );
  }

  InfiniteQuery<Page<Album>, dynamic, int> useAlbumsOfQuery(
    WidgetRef ref,
    String artist,
  ) {
    return useSpotifyInfiniteQuery<Page<Album>, dynamic, int>(
      "artist-albums/$artist",
      (pageParam, spotify) async {
        return spotify.artists.albums(artist).getPage(5, pageParam);
      },
      initialPage: 0,
      nextPage: (lastPage, pages) {
        final page = pages.elementAtOrNull(lastPage);
        if (page == null || page.isLast || (page.items ?? []).length < 5) {
          return null;
        }
        return page.nextOffset;
      },
      ref: ref,
    );
  }

  Query<Iterable<Artist>, dynamic> useRelatedArtistsOfQuery(
    WidgetRef ref,
    String artist,
  ) {
    return useSpotifyQuery<Iterable<Artist>, dynamic>(
      "artist-related-artist-query/$artist",
      (spotify) {
        return spotify.artists.getRelatedArtists(artist);
      },
      ref: ref,
    );
  }
}