web feed intermediate
This commit is contained in:
Fabian Freund
@@ -0,0 +1,261 @@
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import 'package:collection/collection.dart';
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import 'package:flutter/material.dart';
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import 'package:flutter_hooks/flutter_hooks.dart';
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import 'package:flutter_markdown/flutter_markdown.dart';
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import 'package:go_router/go_router.dart';
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import 'package:hooks_riverpod/hooks_riverpod.dart';
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import 'package:lensai/core/providers/format.dart';
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import 'package:lensai/core/routing/routes.dart';
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import 'package:lensai/extensions/nullable.dart';
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import 'package:lensai/features/geckoview/domain/repositories/tab.dart';
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import 'package:lensai/features/web_feed/data/models/feed_link.dart';
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import 'package:lensai/features/web_feed/domain/providers.dart';
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import 'package:lensai/features/web_feed/extensions/feed_article.dart';
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import 'package:lensai/features/web_feed/presentation/widgets/authors_horizontal_list.dart';
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import 'package:lensai/features/web_feed/presentation/widgets/tags_horizontal_list.dart';
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import 'package:lensai/presentation/widgets/failure_widget.dart';
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import 'package:lensai/utils/markdown/image_extractor.dart';
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import 'package:lensai/utils/ui_helper.dart';
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enum _Pages { summary, content }
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class FeedArticleScreen extends HookConsumerWidget {
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final String articleId;
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const FeedArticleScreen({super.key, required this.articleId});
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@override
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Widget build(BuildContext context, WidgetRef ref) {
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final articleAsync = ref.watch(feedArticleProvider(articleId));
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return Scaffold(
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body: articleAsync.when(
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data: (article) {
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if (article == null) {
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return SizedBox.shrink();
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}
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return HookBuilder(
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builder: (context) {
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final hasArticleCreated = article.created != null;
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final hasArticleUpdated =
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article.updated != null && article.updated != article.created;
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final hasAuthors = article.authors.isNotEmpty;
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final hasTags = article.tags.isNotEmpty;
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final tabs = useMemoized(
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() => [
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if (article.summaryMarkdown.isNotEmpty) _Pages.summary,
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if (article.contentMarkdown.isNotEmpty) _Pages.content,
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],
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);
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final tabController = useTabController(
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initialLength: tabs.length,
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);
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final articleLink = useMemoized(
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() => article.links?.firstWhereOrNull(
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(link) => link.relation == FeedLinkRelation.alternate,
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),
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);
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final articleImages = useMemoized(
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() => (article.contentMarkdown ?? article.summaryMarkdown)
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.mapNotNull(extractImagesFromMarkdown),
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);
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final bottomHeight = useMemoized(() {
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var height = 0.0;
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if (hasArticleCreated) {
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height += 20;
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}
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if (hasArticleUpdated) {
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height += 20;
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}
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if (hasAuthors) {
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height += 56;
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}
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if (hasTags) {
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height += 56;
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}
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return height;
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});
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return NestedScrollView(
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headerSliverBuilder:
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(context, innerBoxIsScrolled) => [
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SliverAppBar.large(
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pinned: false,
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flexibleSpace: FlexibleSpaceBar(
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centerTitle: false,
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titlePadding: EdgeInsetsDirectional.only(
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start: 72,
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end: 72,
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bottom: bottomHeight + 16,
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),
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title: Text(
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article.displayTitle,
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maxLines: 2,
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overflow: TextOverflow.ellipsis,
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),
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background: articleImages?.firstOrNull.mapNotNull(
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(img) => Image.network(
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img.toString(),
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fit: BoxFit.cover,
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color: Theme.of(
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context,
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).colorScheme.surface.withAlpha(200),
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colorBlendMode: BlendMode.darken,
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),
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),
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),
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bottom: PreferredSize(
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preferredSize: Size(double.infinity, bottomHeight),
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child: Padding(
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padding: const EdgeInsets.symmetric(
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horizontal: 16.0,
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),
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child: Column(
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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const Divider(),
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Text(
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'Published: ${hasArticleCreated ? ref.read(formatProvider.notifier).fullDateTimeWithTimezone(article.created!) : 'N/A'}',
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style: Theme.of(context).textTheme.bodySmall
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?.copyWith(fontStyle: FontStyle.italic),
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),
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if (hasArticleUpdated)
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Text(
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'Updated: ${ref.read(formatProvider.notifier).fullDateTimeWithTimezone(article.updated!)}',
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style: Theme.of(context).textTheme.bodySmall
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?.copyWith(fontStyle: FontStyle.italic),
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),
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if (hasAuthors)
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Padding(
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padding: const EdgeInsets.only(top: 8.0),
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child: Row(
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children: [
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const Text('Authors:'),
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const SizedBox(width: 8),
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Expanded(
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child: AuthorsHorizontalList(
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authors: article.authors!,
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),
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),
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],
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),
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),
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if (hasTags)
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Padding(
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padding: const EdgeInsets.only(top: 8.0),
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child: Row(
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children: [
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const Text('Tags:'),
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const SizedBox(width: 8),
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Expanded(
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child: TagsHorizontalList(
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tags: article.tags!,
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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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actions: [
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if (articleLink != null)
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IconButton(
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onPressed: () async {
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await ref
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.read(tabRepositoryProvider.notifier)
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.addTab(url: articleLink.uri);
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if (context.mounted) {
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context.go(BrowserRoute().location);
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}
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},
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icon: const Icon(Icons.open_in_browser),
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),
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],
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),
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// SliverToBoxAdapter(
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// child: Padding(
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// padding: const EdgeInsets.all(8.0),
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// child: TabBar(
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// controller: tabController,
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// tabs: [
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// ...tabs.map(
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// (tab) => switch (tab) {
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// _Pages.summary => const Tab(text: 'Summary'),
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// _Pages.content => const Tab(text: 'Article'),
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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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body: TabBarView(
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controller: tabController,
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children: [
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...tabs.map(
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(tab) => Markdown(
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selectable: true,
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onTapLink: (text, href, title) async {
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if (href.mapNotNull(Uri.tryParse)
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case final Uri url) {
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await ref
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.read(tabRepositoryProvider.notifier)
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.addTab(url: url);
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if (context.mounted) {
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showTabOpenedMessage(
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context,
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tabName: title.whenNotEmpty,
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onShow: () {
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context.go(BrowserRoute().location);
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},
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);
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}
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}
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},
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styleSheet: MarkdownStyleSheet.fromTheme(
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Theme.of(context),
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).copyWith(
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blockquoteDecoration: BoxDecoration(
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color:
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Theme.of(
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context,
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).colorScheme.secondaryContainer,
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borderRadius: BorderRadius.circular(2.0),
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),
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),
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data: switch (tab) {
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_Pages.summary => article.summaryMarkdown!,
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_Pages.content => article.contentMarkdown!,
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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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error:
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(error, stackTrace) => Center(
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child: FailureWidget(
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title: 'Failed reading article',
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exception: error,
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),
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),
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loading: () => const Center(child: CircularProgressIndicator()),
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),
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);
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}
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}
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