import 'dart:ui';
import 'dart:math' as math;
import 'package:easy_localization/easy_localization.dart';
import 'package:flutter/material.dart';
import 'package:gap/gap.dart';
import 'package:go_router/go_router.dart';
import 'package:material_symbols_icons/symbols.dart';
import 'package:provider/provider.dart';
import 'package:sliver_tools/sliver_tools.dart';
import 'package:styled_widget/styled_widget.dart';
import 'package:surface/providers/post.dart';
import 'package:surface/providers/sn_network.dart';
import 'package:surface/providers/user_directory.dart';
import 'package:surface/types/account.dart';
import 'package:surface/types/post.dart';
import 'package:surface/widgets/account/account_image.dart';
import 'package:surface/widgets/dialog.dart';
import 'package:surface/widgets/post/post_item.dart';
import 'package:surface/widgets/universal_image.dart';
import 'package:very_good_infinite_list/very_good_infinite_list.dart';
class PostPublisherScreen extends StatefulWidget {
final String name;
const PostPublisherScreen({super.key, required this.name});
@override
State<PostPublisherScreen> createState() => _PostPublisherScreenState();
}
class _PostPublisherScreenState extends State<PostPublisherScreen>
with SingleTickerProviderStateMixin {
late final ScrollController _scrollController = ScrollController();
late final TabController _tabController =
TabController(length: 3, vsync: this);
SnPublisher? _publisher;
SnAccount? _account;
Future<void> _fetchPublisher() async {
try {
final sn = context.read<SnNetworkProvider>();
final ud = context.read<UserDirectoryProvider>();
final resp = await sn.client.get('/cgi/co/publishers/${widget.name}');
if (!mounted) return;
_publisher = SnPublisher.fromJson(resp.data);
_account = await ud.getAccount(_publisher?.accountId);
} catch (err) {
if (!mounted) return;
context.showErrorDialog(err).then((_) {
if (mounted) Navigator.pop(context);
});
} finally {
setState(() {});
}
}
bool _isSubscribing = false;
SnSubscription? _subscription;
Future<void> _fetchSubscription() async {
try {
setState(() => _isSubscribing = true);
final sn = context.read<SnNetworkProvider>();
final resp = await sn.client.get(
'/cgi/co/subscriptions/users/${_publisher!.id}',
);
if (!mounted) return;
_subscription = SnSubscription.fromJson(resp.data);
} catch (_) {
// ignore due to maybe 404
} finally {
setState(() => _isSubscribing = false);
}
}
Future<void> _toggleSubscription() async {
if (_subscription == null) {
try {
setState(() => _isSubscribing = true);
final sn = context.read<SnNetworkProvider>();
final resp = await sn.client.post(
'/cgi/co/subscriptions/users/${_publisher!.id}',
);
if (!mounted) return;
_subscription = SnSubscription.fromJson(resp.data);
} catch (err) {
if (!mounted) return;
context.showErrorDialog(err);
} finally {
setState(() => _isSubscribing = false);
}
} else {
try {
setState(() => _isSubscribing = true);
final sn = context.read<SnNetworkProvider>();
await sn.client.delete(
'/cgi/co/subscriptions/users/${_publisher!.id}',
);
if (!mounted) return;
_subscription = null;
} catch (err) {
if (!mounted) return;
context.showErrorDialog(err);
} finally {
setState(() => _isSubscribing = false);
}
}
}
double _appBarBlur = 0.0;
late final _appBarWidth = MediaQuery.of(context).size.width;
late final _appBarHeight =
(_appBarWidth * kBannerAspectRatio).roundToDouble();
void _updateAppBarBlur() {
if (_scrollController.offset > _appBarHeight) return;
setState(() {
_appBarBlur =
(_scrollController.offset / _appBarHeight * 10).clamp(0.0, 10.0);
});
}
bool _isBusy = false;
int? _postCount;
final List<SnPost> _posts = List.empty(growable: true);
Future<void> _fetchPosts() async {
if (_isBusy) return;
setState(() => _isBusy = true);
try {
final pt = context.read<SnPostContentProvider>();
final result = await pt.listPosts(
offset: _posts.length,
author: widget.name,
type: switch (_tabController.index) {
1 => 'story',
2 => 'article',
_ => null,
},
);
_postCount = result.$2;
_posts.addAll(result.$1);
} catch (err) {
if (!mounted) return;
context.showErrorDialog(err);
} finally {
setState(() => _isBusy = false);
}
}
void _updateFetchType() {
_posts.clear();
_fetchPosts();
}
@override
void initState() {
super.initState();
_fetchPublisher().then((_) {
_fetchPosts();
_fetchSubscription();
});
_scrollController.addListener(_updateAppBarBlur);
_tabController.addListener(_updateFetchType);
}
@override
void dispose() {
_scrollController.removeListener(_updateAppBarBlur);
_scrollController.dispose();
_tabController.removeListener(_updateFetchType);
_tabController.dispose();
super.dispose();
}
static const kBannerAspectRatio = 7 / 16;
@override
Widget build(BuildContext context) {
final imageHeight = _appBarHeight + kToolbarHeight + 8;
const labelShadows = <Shadow>[
Shadow(
offset: Offset(1, 1),
blurRadius: 5.0,
color: Color.fromARGB(255, 0, 0, 0),
),
];
final sn = context.read<SnNetworkProvider>();
return Scaffold(
body: NestedScrollView(
controller: _scrollController,
headerSliverBuilder: (BuildContext context, bool innerBoxIsScrolled) {
return <Widget>[
SliverOverlapAbsorber(
handle: NestedScrollView.sliverOverlapAbsorberHandleFor(context),
sliver: MultiSliver(
children: [
SliverAppBar(
expandedHeight: _appBarHeight,
title: _publisher == null
? Text('loading').tr()
: RichText(
textAlign: TextAlign.center,
text: TextSpan(children: [
TextSpan(
text: _publisher!.nick,
style: Theme.of(context)
.textTheme
.titleLarge!
.copyWith(
color: Colors.white,
shadows: labelShadows,
),
),
const TextSpan(text: '\n'),
TextSpan(
text: '@${_publisher!.name}',
style: Theme.of(context)
.textTheme
.bodySmall!
.copyWith(
color: Colors.white,
shadows: labelShadows,
),
),
]),
),
pinned: true,
flexibleSpace: _publisher != null
? Stack(
fit: StackFit.expand,
children: [
UniversalImage(
sn.getAttachmentUrl(_publisher!.banner),
fit: BoxFit.cover,
height: imageHeight,
width: _appBarWidth,
cacheHeight: imageHeight,
cacheWidth: _appBarWidth,
),
Positioned(
top: 0,
left: 0,
right: 0,
height: 56 + MediaQuery.of(context).padding.top,
child: ClipRect(
child: BackdropFilter(
filter: ImageFilter.blur(
sigmaX: _appBarBlur,
sigmaY: _appBarBlur,
),
child: Container(
color: Colors.black.withOpacity(
clampDouble(_appBarBlur * 0.1, 0, 0.5),
),
),
),
),
),
],
)
: null,
),
if (_publisher != null)
SliverToBoxAdapter(
child: Container(
constraints: const BoxConstraints(maxWidth: 640),
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
Row(
children: [
AccountImage(
content: _publisher!.avatar,
radius: 28,
),
const Gap(16),
Expanded(
child: Column(
crossAxisAlignment:
CrossAxisAlignment.start,
children: [
Text(
_publisher!.nick,
style: Theme.of(context)
.textTheme
.titleMedium,
).bold(),
Text('@${_publisher!.name}').fontSize(13),
],
),
),
if (_subscription == null)
ElevatedButton.icon(
style: ButtonStyle(
elevation: WidgetStatePropertyAll(0),
),
onPressed: _isSubscribing
? null
: _toggleSubscription,
label: Text('subscribe').tr(),
icon: const Icon(Symbols.add),
)
else
OutlinedButton.icon(
style: ButtonStyle(
elevation: WidgetStatePropertyAll(0),
),
onPressed: _isSubscribing
? null
: _toggleSubscription,
label: Text('unsubscribe').tr(),
icon: const Icon(Symbols.remove),
),
],
).padding(right: 8),
const Gap(12),
Text(_publisher!.description)
.padding(horizontal: 8),
const Gap(12),
Column(
children: [
Row(
children: [
const Icon(Symbols.calendar_add_on),
const Gap(8),
Text('publisherJoinedAt').tr(args: [
DateFormat('y/M/d')
.format(_publisher!.createdAt)
]),
],
),
Row(
children: [
const Icon(Symbols.trending_up),
const Gap(8),
Text('publisherSocialPointTotal').plural(
_publisher!.totalUpvote -
_publisher!.totalDownvote,
),
],
),
Row(
children: [
const Icon(Symbols.tools_wrench),
const Gap(8),
InkWell(
child: Text('publisherRunBy').tr(args: [
'@${_account?.name ?? 'unknown'}',
]),
onTap: () {
GoRouter.of(context).pushNamed(
'accountProfilePage',
pathParameters: {
'name': _account!.name,
},
);
},
),
const Gap(8),
AccountImage(
content: _account?.avatar, radius: 8),
],
),
],
).padding(horizontal: 8),
],
).padding(all: 16),
).center(),
),
SliverToBoxAdapter(child: const Divider(height: 1)),
TabBar(
controller: _tabController,
tabs: [
Tab(
icon: Icon(
Symbols.pages,
color: Theme.of(context).colorScheme.onSurface,
),
),
Tab(
icon: Icon(
Symbols.sticky_note_2,
color: Theme.of(context).colorScheme.onSurface,
),
),
Tab(
icon: Icon(
Symbols.article,
color: Theme.of(context).colorScheme.onSurface,
),
),
],
),
SliverToBoxAdapter(child: const Divider(height: 1)),
],
),
),
];
},
body: Column(
children: [
Gap(math.max(MediaQuery.of(context).padding.top, 64)),
Expanded(
child: TabBarView(
controller: _tabController,
children: List.filled(
3,
_PublisherPostList(
isBusy: _isBusy,
postCount: _postCount,
posts: _posts,
fetchPosts: _fetchPosts,
onChanged: (idx, data) {
setState(() => _posts[idx] = data);
},
onDeleted: () {
_posts.clear();
_fetchPosts();
},
),
),
),
),
],
),
),
);
}
}
class _PublisherPostList extends StatelessWidget {
final bool isBusy;
final int? postCount;
final List<SnPost> posts;
final void Function() fetchPosts;
final void Function(int index, SnPost data) onChanged;
final void Function() onDeleted;
const _PublisherPostList({
super.key,
required this.isBusy,
required this.postCount,
required this.posts,
required this.fetchPosts,
required this.onChanged,
required this.onDeleted,
});
@override
Widget build(BuildContext context) {
return InfiniteList(
itemCount: posts.length,
isLoading: isBusy,
hasReachedMax: postCount != null && posts.length >= postCount!,
onFetchData: fetchPosts,
itemBuilder: (context, idx) {
return GestureDetector(
child: PostItem(
data: posts[idx],
maxWidth: 640,
onChanged: (data) {
onChanged(idx, data);
},
onDeleted: onDeleted,
),
onTap: () {
GoRouter.of(context).pushNamed(
'postDetail',
pathParameters: {'slug': posts[idx].id.toString()},
extra: posts[idx],
);
},
);
},
separatorBuilder: (context, index) => const Divider(height: 1),
);
}
}