spotube/lib/components/genre/category_card.dart

import 'dart:ui';

import 'package:flutter/material.dart' hide Page;
import 'package:flutter_hooks/flutter_hooks.dart';
import 'package:hooks_riverpod/hooks_riverpod.dart';

import 'package:spotify/spotify.dart';
import 'package:spotube/components/playlist/playlist_card.dart';
import 'package:spotube/components/shared/shimmers/shimmer_playbutton_card.dart';
import 'package:spotube/components/shared/waypoint.dart';
import 'package:spotube/models/logger.dart';
import 'package:spotube/services/queries/queries.dart';

class CategoryCard extends HookConsumerWidget {
  final Category category;
  CategoryCard(
    this.category, {
    Key? key,
  }) : super(key: key);

  final logger = getLogger(CategoryCard);

  @override
  Widget build(BuildContext context, ref) {
    final scrollController = useScrollController();
    final playlistQuery = useQueries.category.playlistsOf(
      ref,
      category.id!,
    );

    if (playlistQuery.hasErrors && !playlistQuery.hasPageData) {
      return const SizedBox.shrink();
    }
    final playlists = playlistQuery.pages.expand(
      (page) {
        return page.items?.where((i) => i != null) ?? const Iterable.empty();
      },
    ).toList();
    return Padding(
      padding: const EdgeInsets.all(8.0),
      child: Column(
        mainAxisSize: MainAxisSize.min,
        crossAxisAlignment: CrossAxisAlignment.start,
        children: [
          Text(
            category.name!,
            style: Theme.of(context).textTheme.titleMedium,
          ),
          ScrollConfiguration(
            behavior: ScrollConfiguration.of(context).copyWith(
              dragDevices: {
                PointerDeviceKind.touch,
                PointerDeviceKind.mouse,
              },
            ),
            child: Waypoint(
              controller: scrollController,
              onTouchEdge: playlistQuery.fetchNext,
              child: SingleChildScrollView(
                scrollDirection: Axis.horizontal,
                controller: scrollController,
                padding: const EdgeInsets.symmetric(vertical: 8.0),
                child: Row(
                  crossAxisAlignment: CrossAxisAlignment.start,
                  children: [
                    ...playlists.map((playlist) => PlaylistCard(playlist)),
                    if (playlistQuery.hasNextPage)
                      const ShimmerPlaybuttonCard(count: 1),
                  ],
                ),
              ),
            ),
          ),
        ],
      ),
    );
  }
}