lemmur-app-android/lib/pages/instance.dart

438 lines
15 KiB
Dart

import 'package:cached_network_image/cached_network_image.dart';
import 'package:esys_flutter_share/esys_flutter_share.dart';
import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';
import 'package:flutter_hooks/flutter_hooks.dart';
import 'package:lemmy_api_client/v2.dart';
import 'package:url_launcher/url_launcher.dart' as ul;
import '../hooks/stores.dart';
import '../util/goto.dart';
import '../util/more_icon.dart';
import '../util/text_color.dart';
import '../widgets/badge.dart';
import '../widgets/bottom_modal.dart';
import '../widgets/fullscreenable_image.dart';
import '../widgets/info_table_popup.dart';
import '../widgets/markdown_text.dart';
import '../widgets/sortable_infinite_list.dart';
import 'communities_list.dart';
import 'users_list.dart';
/// Displays posts, comments, and general info about the given instance
class InstancePage extends HookWidget {
final String instanceHost;
final Future<FullSiteView> siteFuture;
final Future<List<CommunityView>> communitiesFuture;
void _share() =>
Share.text('Share instance', 'https://$instanceHost', 'text/plain');
InstancePage({@required this.instanceHost})
: assert(instanceHost != null),
siteFuture = LemmyApiV2(instanceHost).run(GetSite()),
communitiesFuture =
LemmyApiV2(instanceHost).run(ListCommunities(sort: SortType.hot));
@override
Widget build(BuildContext context) {
final theme = Theme.of(context);
final siteSnap = useFuture(siteFuture);
final colorOnCard = textColorBasedOnBackground(theme.cardColor);
final accStore = useAccountsStore();
if (!siteSnap.hasData) {
return Scaffold(
appBar: AppBar(
iconTheme: theme.iconTheme,
brightness: theme.brightness,
backgroundColor: theme.cardColor,
elevation: 0,
),
body: Center(
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: [
if (siteSnap.hasError) ...[
const Icon(Icons.error),
Padding(
padding: const EdgeInsets.all(8),
child: Text('ERROR: ${siteSnap.error}'),
)
] else
const CircularProgressIndicator(semanticsLabel: 'loading')
],
),
),
);
}
final site = siteSnap.data;
void _openMoreMenu(BuildContext c) {
showModalBottomSheet(
backgroundColor: Colors.transparent,
context: context,
builder: (context) => BottomModal(
child: Column(
children: [
ListTile(
leading: const Icon(Icons.open_in_browser),
title: const Text('Open in browser'),
onTap: () async => await ul
.canLaunch('https://${site.instanceHost}')
? ul.launch('https://${site.instanceHost}')
: Scaffold.of(context).showSnackBar(
const SnackBar(content: Text("can't open in browser"))),
),
ListTile(
leading: const Icon(Icons.info_outline),
title: const Text('Nerd stuff'),
onTap: () {
showInfoTablePopup(context, {
'url': instanceHost,
'creator': '@${site.siteView.creator.name}',
'version': site.version,
'enableDownvotes': site.siteView.site.enableDownvotes,
'enableNsfw': site.siteView.site.enableNsfw,
'published': site.siteView.site.published,
'updated': site.siteView.site.updated,
});
},
),
],
),
),
);
}
return Scaffold(
body: DefaultTabController(
length: 3,
child: NestedScrollView(
headerSliverBuilder: (context, innerBoxIsScrolled) => <Widget>[
SliverAppBar(
brightness: theme.brightness,
expandedHeight: 200,
pinned: true,
elevation: 0,
backgroundColor: theme.cardColor,
iconTheme: theme.iconTheme,
title: Text(
site.siteView.site.name,
style: TextStyle(color: colorOnCard),
),
actions: [
IconButton(icon: const Icon(Icons.share), onPressed: _share),
IconButton(
icon: Icon(moreIcon),
onPressed: () => _openMoreMenu(context)),
],
flexibleSpace: FlexibleSpaceBar(
background: Stack(children: [
if (site.siteView.site.banner != null)
FullscreenableImage(
url: site.siteView.site.banner,
child: CachedNetworkImage(
imageUrl: site.siteView.site.banner,
errorWidget: (_, __, ___) => const SizedBox.shrink(),
),
),
SafeArea(
child: Center(
child: Column(
children: [
Padding(
padding: const EdgeInsets.only(top: 40),
child: site.siteView.site.icon == null
? const SizedBox(height: 100, width: 100)
: FullscreenableImage(
url: site.siteView.site.icon,
child: CachedNetworkImage(
width: 100,
height: 100,
imageUrl: site.siteView.site.icon,
errorWidget: (_, __, ___) =>
const Icon(Icons.warning),
),
),
),
Text(site.siteView.site.name,
style: theme.textTheme.headline6),
Text(instanceHost, style: theme.textTheme.caption)
],
),
),
),
]),
),
),
SliverPersistentHeader(
delegate: _SliverAppBarDelegate(
TabBar(
labelColor: theme.textTheme.bodyText1.color,
unselectedLabelColor: Colors.grey,
tabs: const [
Tab(text: 'Posts'),
Tab(text: 'Comments'),
Tab(text: 'About'),
],
),
),
pinned: true,
),
],
body: TabBarView(
children: [
InfinitePostList(
fetcher: (page, batchSize, sort) =>
LemmyApiV2(instanceHost).run(GetPosts(
// TODO: switch between all and subscribed
type: PostListingType.all,
sort: sort,
limit: batchSize,
page: page,
auth: accStore.defaultTokenFor(instanceHost)?.raw,
))),
InfiniteCommentList(
fetcher: (page, batchSize, sort) =>
LemmyApiV2(instanceHost).run(GetComments(
type: CommentListingType.all,
sort: sort,
limit: batchSize,
page: page,
auth: accStore.defaultTokenFor(instanceHost)?.raw,
))),
_AboutTab(site,
communitiesFuture: communitiesFuture,
instanceHost: instanceHost),
],
),
),
),
);
}
}
class _SliverAppBarDelegate extends SliverPersistentHeaderDelegate {
final TabBar _tabBar;
const _SliverAppBarDelegate(this._tabBar);
@override
double get minExtent => _tabBar.preferredSize.height;
@override
double get maxExtent => _tabBar.preferredSize.height;
@override
Widget build(
BuildContext context, double shrinkOffset, bool overlapsContent) {
final theme = Theme.of(context);
return Container(color: theme.cardColor, child: _tabBar);
}
@override
bool shouldRebuild(_SliverAppBarDelegate oldDelegate) => false;
}
class _AboutTab extends HookWidget {
final FullSiteView site;
final Future<List<CommunityView>> communitiesFuture;
final String instanceHost;
const _AboutTab(this.site,
{@required this.communitiesFuture, @required this.instanceHost})
: assert(communitiesFuture != null),
assert(instanceHost != null);
void goToModLog() {
print('GO TO MODLOG');
}
void goToBannedUsers(BuildContext c) {
goTo(
c,
(_) => UsersListPage(
users: site.banned.reversed.toList(), title: 'Banned users'),
);
}
@override
Widget build(BuildContext context) {
final theme = Theme.of(context);
final commSnap = useFuture(communitiesFuture);
final accStore = useAccountsStore();
void goToCommunities() {
goTo(
context,
(_) => CommunitiesListPage(
fetcher: (page, batchSize, sortType) =>
LemmyApiV2(instanceHost).run(ListCommunities(
sort: sortType,
limit: batchSize,
page: page,
auth: accStore.defaultTokenFor(instanceHost)?.raw,
)),
title: 'Communities of ${site.siteView.site.name}',
),
);
}
return SingleChildScrollView(
child: SafeArea(
top: false,
child: Column(
children: [
Padding(
padding: const EdgeInsets.symmetric(horizontal: 15, vertical: 15),
child: MarkdownText(
site.siteView.site.description,
instanceHost: instanceHost,
),
),
const _Divider(),
SizedBox(
height: 25,
child: ListView(
scrollDirection: Axis.horizontal,
children: [
const SizedBox(width: 7),
const _Badge('X users online'),
_Badge('${site.siteView.counts.users} users'),
_Badge('${site.siteView.counts.communities} communities'),
_Badge('${site.siteView.counts.posts} posts'),
_Badge('${site.siteView.counts.comments} comments'),
const SizedBox(width: 15),
],
),
),
const _Divider(),
ListTile(
title: Center(
child: Text(
'Trending communities:',
style: theme.textTheme.headline6.copyWith(fontSize: 18),
),
),
),
if (commSnap.hasData)
...commSnap.data.take(6).map((c) => ListTile(
onTap: () => goToCommunity.byId(
context, c.instanceHost, c.community.id),
title: Text(c.community.name),
leading: c.community.icon != null
? CachedNetworkImage(
height: 50,
width: 50,
imageUrl: c.community.icon,
errorWidget: (_, __, ___) =>
const SizedBox(width: 50, height: 50),
imageBuilder: (context, imageProvider) => Container(
decoration: BoxDecoration(
shape: BoxShape.circle,
image: DecorationImage(
fit: BoxFit.cover,
image: imageProvider,
),
),
))
: const SizedBox(width: 50),
))
else if (commSnap.hasError)
Padding(
padding: const EdgeInsets.all(8),
child: Text("Can't load communities, ${commSnap.error}"),
)
else
const Padding(
padding: EdgeInsets.symmetric(vertical: 10),
child: CircularProgressIndicator(),
),
ListTile(
title: const Center(child: Text('See all')),
onTap: goToCommunities,
),
const _Divider(),
ListTile(
title: Center(
child: Text(
'Admins:',
style: theme.textTheme.headline6.copyWith(fontSize: 18),
),
),
),
...site.admins.map((u) => ListTile(
title: Text((u.user.preferredUsername == null ||
u.user.preferredUsername.isEmpty)
? '@${u.user.name}'
: u.user.preferredUsername),
subtitle: u.user.bio != null
? MarkdownText(u.user.bio, instanceHost: instanceHost)
: null,
onTap: () => goToUser.byId(context, instanceHost, u.user.id),
leading: u.user.avatar != null
? CachedNetworkImage(
height: 50,
width: 50,
imageUrl: u.user.avatar,
errorWidget: (_, __, ___) =>
const SizedBox(width: 50, height: 50),
imageBuilder: (context, imageProvider) => Container(
decoration: BoxDecoration(
shape: BoxShape.circle,
image: DecorationImage(
fit: BoxFit.cover, image: imageProvider),
),
))
: const SizedBox(width: 50),
)),
const _Divider(),
ListTile(
title: const Center(child: Text('Banned users')),
onTap: () => goToBannedUsers(context),
),
ListTile(
title: const Center(child: Text('Modlog')),
onTap: goToModLog,
),
const SizedBox(height: 20),
],
),
),
);
}
}
class _Badge extends StatelessWidget {
final String text;
const _Badge(this.text);
@override
Widget build(BuildContext context) {
final theme = Theme.of(context);
return Padding(
padding: const EdgeInsets.only(left: 8),
child: Badge(
child: Text(
text,
style:
TextStyle(color: textColorBasedOnBackground(theme.accentColor)),
),
),
);
}
}
class _Divider extends StatelessWidget {
const _Divider();
@override
Widget build(BuildContext context) => const Padding(
padding: EdgeInsets.symmetric(horizontal: 15, vertical: 10),
child: Divider(),
);
}