spotube/lib/components/library/user_artists.dart

import 'package:flutter/material.dart';
import 'package:flutter_hooks/flutter_hooks.dart';
import 'package:collection/collection.dart';
import 'package:fuzzywuzzy/fuzzywuzzy.dart';
import 'package:hooks_riverpod/hooks_riverpod.dart';
import 'package:skeletonizer/skeletonizer.dart';
import 'package:spotube/collections/fake.dart';

import 'package:spotube/collections/spotube_icons.dart';
import 'package:spotube/components/shared/fallbacks/anonymous_fallback.dart';
import 'package:spotube/components/artist/artist_card.dart';
import 'package:spotube/components/shared/fallbacks/not_found.dart';
import 'package:spotube/components/shared/inter_scrollbar/inter_scrollbar.dart';
import 'package:spotube/extensions/context.dart';
import 'package:spotube/provider/authentication_provider.dart';
import 'package:spotube/services/queries/queries.dart';

class UserArtists extends HookConsumerWidget {
  const UserArtists({Key? key}) : super(key: key);

  @override
  Widget build(BuildContext context, ref) {
    final theme = Theme.of(context);
    final auth = ref.watch(AuthenticationNotifier.provider);

    final artistQuery = useQueries.artist.followedByMeAll(ref);

    final searchText = useState('');

    final filteredArtists = useMemoized(() {
      final artists = artistQuery.data ?? [];

      if (searchText.value.isEmpty) {
        return artists.toList();
      }
      return artists
          .map((e) => (
                weightedRatio(e.name!, searchText.value),
                e,
              ))
          .sorted((a, b) => b.$1.compareTo(a.$1))
          .where((e) => e.$1 > 50)
          .map((e) => e.$2)
          .toList();
    }, [artistQuery.data, searchText.value]);

    final controller = useScrollController();

    if (auth == null) {
      return const AnonymousFallback();
    }

    return Scaffold(
      appBar: PreferredSize(
        preferredSize: const Size.fromHeight(50),
        child: Padding(
          padding: const EdgeInsets.symmetric(horizontal: 8.0),
          child: ColoredBox(
            color: theme.scaffoldBackgroundColor,
            child: SearchBar(
              onChanged: (value) => searchText.value = value,
              leading: const Icon(SpotubeIcons.filter),
              hintText: context.l10n.filter_artist,
            ),
          ),
        ),
      ),
      backgroundColor: theme.scaffoldBackgroundColor,
      body: artistQuery.data?.isEmpty == true
          ? Padding(
              padding: const EdgeInsets.all(20),
              child: Row(
                mainAxisAlignment: MainAxisAlignment.center,
                children: [
                  const CircularProgressIndicator(),
                  const SizedBox(width: 10),
                  Text(context.l10n.loading),
                ],
              ),
            )
          : RefreshIndicator(
              onRefresh: () async {
                await artistQuery.refresh();
              },
              child: InterScrollbar(
                controller: controller,
                child: SingleChildScrollView(
                  controller: controller,
                  child: SizedBox(
                    width: double.infinity,
                    child: SafeArea(
                      child: Center(
                        child: Skeletonizer(
                          enabled: artistQuery.isLoading,
                          child: Wrap(
                            spacing: 15,
                            runSpacing: 5,
                            children: artistQuery.isLoading
                                ? List.generate(
                                    10, (index) => ArtistCard(FakeData.artist))
                                : filteredArtists.isEmpty
                                    ? [
                                        const Row(
                                          mainAxisAlignment:
                                              MainAxisAlignment.center,
                                          children: [
                                            NotFound(),
                                          ],
                                        )
                                      ]
                                    : filteredArtists
                                        .mapIndexed((index, artist) =>
                                            ArtistCard(artist))
                                        .toList(),
                          ),
                        ),
                      ),
                    ),
                  ),
                ),
              ),
            ),
    );
  }
}