132 lines
4.6 KiB
Dart
132 lines
4.6 KiB
Dart
import 'package:flutter/material.dart';
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import 'package:flutter_riverpod/flutter_riverpod.dart';
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import 'package:go_router/go_router.dart';
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import '../../../app/app.dart';
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import '../../../app/responsive.dart';
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import '../../../backend/backend.dart';
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import '../../../core/utils/result.dart';
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import '../../../shared/widgets/adaptive_scaffold.dart';
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import '../../../shared/widgets/empty_view.dart';
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import '../../../shared/widgets/error_view.dart';
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import '../../../shared/widgets/post_masonry_grid.dart';
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import '../../favorites/presentation/favorites_controller.dart';
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import '../../viewed/presentation/viewed_controller.dart';
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import 'post_details_controller.dart';
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final similarPostsProvider =
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FutureProvider.family<List<Post>, PostDetailsArgs>((ref, args) async {
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final source = args.initialPost ??
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await ref.watch(postDetailsControllerProvider(args).future);
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if (source == null) return const [];
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final tags = similarTagsFor(source);
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if (tags.isEmpty) return const [];
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final result = await ref.watch(feedServiceProvider).refresh(
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tags: tags,
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limit: 60,
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);
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if (result is! Success<List<Post>>) return const [];
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return result.data
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.where((post) => post.cacheKey != source.cacheKey)
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.toList(growable: false);
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});
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class SimilarPostsScreen extends ConsumerWidget {
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const SimilarPostsScreen({
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required this.providerId,
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required this.postId,
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this.initialPost,
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super.key,
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});
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final String providerId;
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final String postId;
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final Post? initialPost;
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@override
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Widget build(BuildContext context, WidgetRef ref) {
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final args = PostDetailsArgs(
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providerId: providerId,
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postId: postId,
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initialPost: initialPost,
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);
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final source = ref.watch(postDetailsControllerProvider(args));
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final similar = ref.watch(similarPostsProvider(args));
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final settings =
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ref.watch(appSettingsProvider).value ?? AppSettings.defaults;
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final favorites = ref.watch(favoriteKeysProvider).value ?? <String>{};
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final viewed = ref.watch(viewedKeysProvider).value ?? <String>{};
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final columns = Responsive.isMobile(context)
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? settings.mobileColumns
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: settings.desktopColumns;
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return AdaptiveScaffold(
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title: 'Similar',
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body: source.when(
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loading: () => const Center(child: CircularProgressIndicator()),
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error: (error, _) => ErrorView(message: error.toString()),
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data: (post) {
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final tags = post == null ? const <String>[] : similarTagsFor(post);
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return similar.when(
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loading: () => const Center(child: CircularProgressIndicator()),
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error: (error, _) => ErrorView(message: error.toString()),
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data: (posts) {
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if (tags.isEmpty || posts.isEmpty) {
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return const EmptyView(title: 'No similar posts yet');
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}
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return Column(
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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Padding(
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padding: const EdgeInsets.fromLTRB(16, 12, 16, 0),
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child: Wrap(
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spacing: 8,
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runSpacing: 8,
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children: [
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for (final tag in tags.take(8)) Chip(label: Text(tag)),
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],
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),
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),
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Expanded(
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child: PostMasonryGrid(
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posts: posts,
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columns: columns,
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blurExplicit: settings.blurExplicitContent,
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showBadges: settings.showPostBadges,
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nsfwEnabled: settings.nsfwEnabled,
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favoriteKeys: favorites,
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viewedKeys: viewed,
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onOpen: (post) => context.push(
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'/post/${post.providerId}/${post.id}',
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extra: post,
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),
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onFavorite: (post) =>
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_toggleFavorite(ref, post, favorites),
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),
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),
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],
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);
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},
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);
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},
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),
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);
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}
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Future<void> _toggleFavorite(
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WidgetRef ref,
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Post post,
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Set<String> favoriteKeys,
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) async {
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if (favoriteKeys.contains(post.cacheKey)) {
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await ref
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.read(favoriteServiceProvider)
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.removeFavorite(post.id, post.providerId);
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} else {
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await ref.read(favoriteServiceProvider).addFavorite(post);
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}
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ref.invalidate(favoriteKeysProvider);
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ref.invalidate(viewedControllerProvider);
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}
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}
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