fluffychat/lib/views/home_view_parts/discover.dart
2021-02-05 16:35:15 +01:00

241 lines
7.9 KiB
Dart

import 'dart:async';
import 'package:adaptive_dialog/adaptive_dialog.dart';
import 'package:adaptive_page_layout/adaptive_page_layout.dart';
import 'package:famedlysdk/famedlysdk.dart';
import 'package:fluffychat/components/avatar.dart';
import 'package:fluffychat/components/default_app_bar_search_field.dart';
import 'package:future_loading_dialog/future_loading_dialog.dart';
import 'package:fluffychat/components/matrix.dart';
import 'package:flutter/material.dart';
import 'package:flutter_gen/gen_l10n/l10n.dart';
class Discover extends StatefulWidget {
final String alias;
final String server;
final Stream onAppBarButtonTap;
const Discover({
Key key,
this.alias,
this.server,
this.onAppBarButtonTap,
}) : super(key: key);
@override
_DiscoverState createState() => _DiscoverState();
}
class _DiscoverState extends State<Discover> {
Future<PublicRoomsResponse> _publicRoomsResponse;
Timer _coolDown;
String _genericSearchTerm;
final ScrollController _scrollController = ScrollController();
StreamSubscription _onAppBarButtonTapSub;
final GlobalKey<DefaultAppBarSearchFieldState> _searchField = GlobalKey();
@override
void dispose() {
_onAppBarButtonTapSub?.cancel();
super.dispose();
}
void _search(BuildContext context, String query) async {
_coolDown?.cancel();
_coolDown = Timer(
Duration(milliseconds: 500),
() => setState(() {
_genericSearchTerm = query;
_publicRoomsResponse = null;
}),
);
}
Future<String> _joinRoomAndWait(
BuildContext context,
String roomId,
String alias,
) async {
if (Matrix.of(context).client.getRoomById(roomId) != null) {
return roomId;
}
final newRoomId = await Matrix.of(context)
.client
.joinRoomOrAlias(alias?.isNotEmpty ?? false ? alias : roomId);
await Matrix.of(context)
.client
.onRoomUpdate
.stream
.firstWhere((r) => r.id == newRoomId);
return newRoomId;
}
void _joinGroupAction(BuildContext context, PublicRoom room) async {
if (await showOkCancelAlertDialog(
context: context,
okLabel: L10n.of(context).joinRoom,
title: '${room.name} (${room.numJoinedMembers ?? 0})',
message: room.topic ?? L10n.of(context).noDescription,
) ==
OkCancelResult.cancel) {
return;
}
final success = await showFutureLoadingDialog(
context: context,
future: () => _joinRoomAndWait(
context,
room.roomId,
room.canonicalAlias ?? room.aliases.first,
),
);
if (success.error == null) {
await AdaptivePageLayout.of(context)
.pushNamedAndRemoveUntilIsFirst('/rooms/${success.result}');
}
}
@override
void initState() {
_genericSearchTerm = widget.alias;
_onAppBarButtonTapSub =
widget.onAppBarButtonTap.where((i) => i == 2).listen((_) async {
await _scrollController.animateTo(
_scrollController.position.minScrollExtent,
duration: Duration(milliseconds: 200),
curve: Curves.ease,
);
WidgetsBinding.instance.addPostFrameCallback(
(_) => _searchField.currentState.requestFocus(),
);
});
super.initState();
}
@override
Widget build(BuildContext context) {
final server = _genericSearchTerm?.isValidMatrixId ?? false
? _genericSearchTerm.domain
: widget.server;
_publicRoomsResponse ??= Matrix.of(context)
.client
.searchPublicRooms(
server: server,
genericSearchTerm: _genericSearchTerm,
)
.catchError((error) {
if (widget.alias == null) {
throw error;
}
return PublicRoomsResponse.fromJson({
'chunk': [],
});
}).then((PublicRoomsResponse res) {
if (widget.alias != null &&
!res.chunk.any((room) =>
(room.aliases?.contains(widget.alias) ?? false) ||
room.canonicalAlias == widget.alias)) {
// we have to tack on the original alias
res.chunk.add(PublicRoom.fromJson(<String, dynamic>{
'aliases': [widget.alias],
'name': widget.alias,
}));
}
return res;
});
return ListView(
controller: _scrollController,
children: [
Padding(
padding: EdgeInsets.all(12),
child: DefaultAppBarSearchField(
key: _searchField,
hintText: L10n.of(context).search,
prefixIcon: Icon(Icons.search_outlined),
onChanged: (t) => _search(context, t),
padding: EdgeInsets.zero,
),
),
FutureBuilder<PublicRoomsResponse>(
future: _publicRoomsResponse,
builder: (BuildContext context,
AsyncSnapshot<PublicRoomsResponse> snapshot) {
if (snapshot.hasError) {
return Center(child: Text(snapshot.error.toString()));
}
if (snapshot.connectionState != ConnectionState.done) {
return Center(child: CircularProgressIndicator());
}
final publicRoomsResponse = snapshot.data;
if (publicRoomsResponse.chunk.isEmpty) {
return Center(
child: Text(
'No public groups found...',
textAlign: TextAlign.center,
),
);
}
return GridView.builder(
shrinkWrap: true,
padding: EdgeInsets.all(12),
physics: NeverScrollableScrollPhysics(),
gridDelegate: SliverGridDelegateWithFixedCrossAxisCount(
crossAxisCount: 2,
childAspectRatio: 1,
crossAxisSpacing: 16,
mainAxisSpacing: 16,
),
itemCount: publicRoomsResponse.chunk.length,
itemBuilder: (BuildContext context, int i) => Material(
elevation: 2,
borderRadius: BorderRadius.circular(16),
child: InkWell(
onTap: () => _joinGroupAction(
context,
publicRoomsResponse.chunk[i],
),
borderRadius: BorderRadius.circular(16),
child: Padding(
padding: const EdgeInsets.all(8.0),
child: Column(
mainAxisSize: MainAxisSize.min,
children: [
Avatar(
Uri.parse(
publicRoomsResponse.chunk[i].avatarUrl ?? ''),
publicRoomsResponse.chunk[i].name),
Text(
publicRoomsResponse.chunk[i].name,
style: TextStyle(
fontSize: 16,
fontWeight: FontWeight.bold,
),
maxLines: 1,
textAlign: TextAlign.center,
),
Text(
L10n.of(context).countParticipants(
publicRoomsResponse.chunk[i].numJoinedMembers ??
0),
style: TextStyle(fontSize: 10.5),
maxLines: 1,
textAlign: TextAlign.center,
),
Text(
publicRoomsResponse.chunk[i].topic ??
L10n.of(context).noDescription,
maxLines: 4,
textAlign: TextAlign.center,
),
],
),
),
),
),
);
}),
],
);
}
}