spotube/lib/components/playlist/playlist_card.dart

import 'package:fl_query/fl_query.dart';
import 'package:flutter/material.dart';
import 'package:flutter_hooks/flutter_hooks.dart';
import 'package:hooks_riverpod/hooks_riverpod.dart';
import 'package:spotify/spotify.dart';
import 'package:spotube/components/shared/playbutton_card.dart';
import 'package:spotube/hooks/use_breakpoint_value.dart';
import 'package:spotube/provider/playlist_queue_provider.dart';
import 'package:spotube/provider/spotify_provider.dart';
import 'package:spotube/services/queries/queries.dart';
import 'package:spotube/utils/service_utils.dart';
import 'package:spotube/utils/type_conversion_utils.dart';

class PlaylistCard extends HookConsumerWidget {
  final PlaylistSimple playlist;
  const PlaylistCard(
    this.playlist, {
    Key? key,
  }) : super(key: key);
  @override
  Widget build(BuildContext context, ref) {
    final playlistQueue = ref.watch(PlaylistQueueNotifier.provider);
    final playlistNotifier = ref.watch(PlaylistQueueNotifier.notifier);
    final playing = useStream(PlaylistQueueNotifier.playing).data ??
        PlaylistQueueNotifier.isPlaying;
    final queryBowl = QueryClient.of(context);
    final query = queryBowl.getQuery<List<Track>, dynamic>(
      "playlist-tracks/${playlist.id}",
    );
    final tracks = useState<List<TrackSimple>?>(null);
    bool isPlaylistPlaying = useMemoized(
      () =>
          playlistNotifier.isPlayingPlaylist(tracks.value ?? query?.data ?? []),
      [playlistNotifier, tracks.value, query?.data],
    );

    final int marginH =
        useBreakpointValue(sm: 10, md: 15, lg: 20, xl: 20, xxl: 20);

    final updating = useState(false);
    final spotify = ref.watch(spotifyProvider);

    return PlaybuttonCard(
      margin: EdgeInsets.symmetric(horizontal: marginH.toDouble()),
      title: playlist.name!,
      description: playlist.description,
      imageUrl: TypeConversionUtils.image_X_UrlString(
        playlist.images,
        placeholder: ImagePlaceholder.collection,
      ),
      isPlaying: isPlaylistPlaying,
      isLoading: (isPlaylistPlaying && playlistQueue?.isLoading == true) ||
          updating.value,
      onTap: () {
        ServiceUtils.navigate(
          context,
          "/playlist/${playlist.id}",
          extra: playlist,
        );
      },
      onPlaybuttonPressed: () async {
        try {
          updating.value = true;
          if (isPlaylistPlaying && playing) {
            return playlistNotifier.pause();
          } else if (isPlaylistPlaying && !playing) {
            return playlistNotifier.resume();
          }

          List<Track> fetchedTracks = await queryBowl.fetchQuery(
                "playlist-tracks/${playlist.id}",
                () => useQueries.playlist.tracksOf(playlist.id!, spotify),
              ) ??
              [];

          if (fetchedTracks.isEmpty) return;

          await playlistNotifier.loadAndPlay(fetchedTracks);
          tracks.value = fetchedTracks;
        } finally {
          updating.value = false;
        }
      },
      onAddToQueuePressed: () async {
        updating.value = true;
        try {
          if (isPlaylistPlaying) return;
          List<Track> fetchedTracks = await queryBowl.fetchQuery(
                "playlist-tracks/${playlist.id}",
                () => useQueries.playlist.tracksOf(playlist.id!, spotify),
              ) ??
              [];

          if (fetchedTracks.isEmpty) return;

          playlistNotifier.add(fetchedTracks);
          tracks.value = fetchedTracks;
          if (context.mounted) {
            final snackbar = SnackBar(
              content: Text("Added ${tracks.value?.length} tracks to queue"),
              action: SnackBarAction(
                label: "Undo",
                onPressed: () {
                  playlistNotifier.remove(fetchedTracks);
                },
              ),
            );
            ScaffoldMessenger.maybeOf(context)?.showSnackBar(snackbar);
          }
        } finally {
          updating.value = false;
        }
      },
    );
  }
}