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mirror of https://github.com/krawieck/lemmur/ synced 2024-12-15 18:10:53 +01:00
lemmur-app-android/lib/pages/home_tab.dart
2020-10-06 12:06:29 +02:00

313 lines
10 KiB
Dart

import 'dart:math' show max;
import 'package:cached_network_image/cached_network_image.dart';
import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';
import 'package:flutter_hooks/flutter_hooks.dart';
import 'package:lemmy_api_client/lemmy_api_client.dart';
import '../hooks/infinite_scroll.dart';
import '../hooks/memo_future.dart';
import '../hooks/stores.dart';
import '../util/goto.dart';
import '../widgets/bottom_modal.dart';
import '../widgets/infinite_scroll.dart';
import '../widgets/post.dart';
import '../widgets/post_list_options.dart';
import 'add_account.dart';
import 'inbox.dart';
class HomeTab extends HookWidget {
@override
Widget build(BuildContext context) {
final selectedList =
useState(SelectedList(listingType: PostListingType.subscribed));
// TODO: needs to be an observer? for accounts changes
final accStore = useAccountsStore();
final isc = useInfiniteScrollController();
final theme = Theme.of(context);
final instancesIcons = useMemoFuture(() async {
final map = <String, String>{};
final instances = accStore.instances.toList(growable: false);
final sites = await Future.wait(instances
.map((e) => LemmyApi(e).v1.getSite().catchError((e) => null)));
for (var i in Iterable.generate(sites.length)) {
map[instances[i]] = sites[i].site.icon;
}
return map;
});
handleListChange() async {
final val = await showModalBottomSheet<SelectedList>(
backgroundColor: Colors.transparent,
isScrollControlled: true,
context: context,
builder: (context) {
pop(SelectedList thing) => Navigator.of(context).pop(thing);
return BottomModal(
child: Column(
children: [
SizedBox(height: 5),
ListTile(
title: Text('EVERYTHING'),
dense: true,
contentPadding: EdgeInsets.zero,
visualDensity:
VisualDensity(vertical: VisualDensity.minimumDensity),
leading: SizedBox.shrink(),
),
ListTile(
title: Text('Subscribed'),
leading: SizedBox(width: 20, height: 20),
onTap: () =>
pop(SelectedList(listingType: PostListingType.subscribed)),
),
ListTile(
title: Text('All'),
leading: SizedBox(width: 20, height: 20),
onTap: () =>
pop(SelectedList(listingType: PostListingType.all)),
),
for (final instance in accStore.instances) ...[
Padding(
padding: const EdgeInsets.symmetric(horizontal: 10),
child: Divider(),
),
ListTile(
title: Text(
instance.toUpperCase(),
style: TextStyle(
color:
theme.textTheme.bodyText1.color.withOpacity(0.7)),
),
onTap: () => goToInstance(context, instance),
dense: true,
contentPadding: EdgeInsets.zero,
visualDensity:
VisualDensity(vertical: VisualDensity.minimumDensity),
leading: (instancesIcons.hasData &&
instancesIcons.data[instance] != null)
? Row(
mainAxisAlignment: MainAxisAlignment.center,
mainAxisSize: MainAxisSize.min,
children: [
SizedBox(width: 20),
SizedBox(
width: 25,
height: 25,
child: CachedNetworkImage(
imageUrl: instancesIcons.data[instance],
height: 25,
width: 25,
),
),
],
)
: SizedBox(width: 30),
),
ListTile(
title: Text(
'Subscribed',
style: TextStyle(
color: accStore.isAnonymousFor(instance)
? theme.textTheme.bodyText1.color.withOpacity(0.4)
: null),
),
onTap: accStore.isAnonymousFor(instance)
? () => showCupertinoModalPopup(
context: context,
builder: (_) => AddAccountPage(instanceUrl: instance))
: () => pop(SelectedList(
listingType: PostListingType.subscribed,
instanceUrl: instance,
)),
leading: SizedBox(width: 20),
),
ListTile(
title: Text('All'),
onTap: () => pop(SelectedList(
listingType: PostListingType.all,
instanceUrl: instance,
)),
leading: SizedBox(width: 20),
),
]
],
));
},
);
if (val != null) {
print(val);
selectedList.value = val;
isc.clear();
}
}
final title = () {
final first = selectedList.value.listingType == PostListingType.subscribed
? 'Subscribed'
: 'All';
final last = selectedList.value.instanceUrl == null
? ''
: '@${selectedList.value.instanceUrl}';
return '$first$last';
}();
return Scaffold(
// TODO: make appbar autohide when scrolling down
appBar: AppBar(
actions: [
IconButton(
icon: Icon(Icons.notifications),
onPressed: () => goTo(context, (_) => InboxPage()),
)
],
centerTitle: true,
title: TextButton(
style: TextButton.styleFrom(
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.all(Radius.circular(10))),
padding: EdgeInsets.symmetric(horizontal: 15),
primary: theme.buttonColor,
textStyle: theme.primaryTextTheme.headline6,
),
onPressed: handleListChange,
child: Row(
mainAxisSize: MainAxisSize.min,
mainAxisAlignment: MainAxisAlignment.center,
children: [
Flexible(
child: Text(
title,
style: theme.primaryTextTheme.headline6,
overflow: TextOverflow.ellipsis,
),
),
Icon(
Icons.arrow_drop_down,
color: theme.primaryTextTheme.headline6.color,
),
],
),
),
),
body: InfiniteHomeList(
controller: isc,
selectedList: selectedList.value,
),
);
}
}
class InfiniteHomeList extends HookWidget {
final Function onStyleChange;
final InfiniteScrollController controller;
final SelectedList selectedList;
InfiniteHomeList({
@required this.selectedList,
this.onStyleChange,
this.controller,
}) : assert(selectedList != null);
@override
Widget build(BuildContext context) {
final accStore = useAccountsStore();
final sort = useState(SortType.active);
void changeSorting(SortType newSort) {
sort.value = newSort;
controller.clear();
}
Future<List<PostView>> ultimateFetcher(
int page,
int limit,
SortType sort,
PostListingType listingType,
) async {
assert(
listingType != PostListingType.community, 'only subscribed or all');
final instances = () {
if (listingType == PostListingType.all) {
return accStore.instances;
} else {
return accStore.loggedInInstances;
}
}();
final futures =
instances.map((instanceUrl) => LemmyApi(instanceUrl).v1.getPosts(
type: listingType,
sort: sort,
page: page,
limit: limit,
auth: accStore.defaultTokenFor(instanceUrl)?.raw,
));
final posts = (await Future.wait(futures));
final newPosts = <PostView>[];
for (final i
in Iterable.generate(posts.map((e) => e.length).reduce(max))) {
for (final el in posts) {
if (el.elementAt(i) != null) {
newPosts.add(el[i]);
}
}
}
return newPosts;
}
Future<List<PostView>> Function(int, int) _fetcherFromInstance(
String instanceUrl, PostListingType listingType, SortType sort) =>
(page, batchSize) => LemmyApi(instanceUrl).v1.getPosts(
type: listingType,
sort: sort,
page: page,
limit: batchSize,
auth: accStore.defaultTokenFor(instanceUrl)?.raw,
);
return InfiniteScroll<PostView>(
prepend: Column(
children: [
PostListOptions(
onChange: changeSorting,
defaultSort: SortType.active,
styleButton: onStyleChange != null,
),
],
),
builder: (post) => Column(
children: [
Post(post),
SizedBox(height: 20),
],
),
padding: EdgeInsets.zero,
fetchMore: selectedList.instanceUrl == null
? (page, limit) =>
ultimateFetcher(page, limit, sort.value, selectedList.listingType)
: _fetcherFromInstance(
selectedList.instanceUrl,
selectedList.listingType,
sort.value,
),
controller: controller,
batchSize: 20,
);
}
}
class SelectedList {
final String instanceUrl;
final PostListingType listingType;
SelectedList({
@required this.listingType,
this.instanceUrl,
});
String toString() =>
'SelectedList({instanceUrl: $instanceUrl, listingType: $listingType})';
}