Solian/lib/screens/channel/channel_chat.dart

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Dart
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import 'dart:async';
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import 'dart:ui';
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import 'package:flutter/material.dart';
import 'package:flutter_animate/flutter_animate.dart';
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import 'package:get/get.dart';
import 'package:solian/controllers/chat_history_controller.dart';
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import 'package:solian/exts.dart';
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import 'package:solian/models/call.dart';
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import 'package:solian/models/channel.dart';
import 'package:solian/models/message.dart';
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import 'package:solian/models/packet.dart';
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import 'package:solian/providers/auth.dart';
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import 'package:solian/providers/chat.dart';
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import 'package:solian/providers/content/call.dart';
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import 'package:solian/providers/content/channel.dart';
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import 'package:solian/router.dart';
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import 'package:solian/screens/channel/channel_detail.dart';
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import 'package:solian/theme.dart';
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import 'package:solian/widgets/app_bar_title.dart';
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import 'package:solian/widgets/chat/call/call_prejoin.dart';
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import 'package:solian/widgets/chat/call/chat_call_action.dart';
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import 'package:solian/widgets/chat/chat_message.dart';
import 'package:solian/widgets/chat/chat_message_action.dart';
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import 'package:solian/widgets/chat/chat_message_input.dart';
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import 'package:solian/widgets/current_state_action.dart';
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class ChannelChatScreen extends StatefulWidget {
final String alias;
final String realm;
const ChannelChatScreen({
super.key,
required this.alias,
this.realm = 'global',
});
@override
State<ChannelChatScreen> createState() => _ChannelChatScreenState();
}
class _ChannelChatScreenState extends State<ChannelChatScreen> {
bool _isBusy = false;
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int? _accountId;
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String? _overrideAlias;
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Channel? _channel;
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Call? _ongoingCall;
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ChannelMember? _channelProfile;
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StreamSubscription<NetworkPackage>? _subscription;
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late final ChatHistoryController _chatController;
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getProfile() async {
final AuthProvider auth = Get.find();
final prof = await auth.getProfile();
_accountId = prof.body['id'];
}
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getChannel({String? overrideAlias}) async {
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final ChannelProvider provider = Get.find();
setState(() => _isBusy = true);
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if (overrideAlias != null) _overrideAlias = overrideAlias;
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try {
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final resp = await provider.getChannel(
_overrideAlias ?? widget.alias,
realm: widget.realm,
);
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final respProfile = await provider.getMyChannelProfile(
_overrideAlias ?? widget.alias,
realm: widget.realm,
);
setState(() {
_channel = Channel.fromJson(resp.body);
_channelProfile = ChannelMember.fromJson(respProfile.body);
});
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} catch (e) {
context.showErrorDialog(e);
}
setState(() => _isBusy = false);
}
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getOngoingCall() async {
final ChannelProvider provider = Get.find();
setState(() => _isBusy = true);
try {
final resp = await provider.getChannelOngoingCall(
_overrideAlias ?? widget.alias,
realm: widget.realm,
);
if (resp != null) {
setState(() => _ongoingCall = Call.fromJson(resp.body));
}
} catch (e) {
context.showErrorDialog(e);
}
setState(() => _isBusy = false);
}
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void listenMessages() {
final ChatProvider provider = Get.find();
_subscription = provider.stream.stream.listen((event) {
switch (event.method) {
case 'messages.new':
final payload = Message.fromJson(event.payload!);
if (payload.channelId == _channel?.id) {
_chatController.receiveMessage(payload);
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}
break;
case 'messages.update':
final payload = Message.fromJson(event.payload!);
if (payload.channelId == _channel?.id) {
_chatController.replaceMessage(payload);
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}
break;
case 'messages.burnt':
final payload = Message.fromJson(event.payload!);
if (payload.channelId == _channel?.id) {
_chatController.burnMessage(payload.id);
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}
break;
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case 'calls.new':
final payload = Call.fromJson(event.payload!);
_ongoingCall = payload;
break;
case 'calls.end':
_ongoingCall = null;
break;
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}
});
}
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bool checkMessageMergeable(Message? a, Message? b) {
if (a?.replyTo != null) return false;
if (a == null || b == null) return false;
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if (a.sender.account.id != b.sender.account.id) return false;
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return a.createdAt.difference(b.createdAt).inMinutes <= 3;
}
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void showCallPrejoin() {
showModalBottomSheet(
useRootNavigator: true,
context: context,
builder: (context) => ChatCallPrejoinPopup(
ongoingCall: _ongoingCall!,
channel: _channel!,
),
);
}
Message? _messageToReplying;
Message? _messageToEditing;
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Widget buildHistoryBody(Message item, {bool isMerged = false}) {
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if (item.replyTo != null) {
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return Column(
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children: [
ChatMessage(
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key: Key('m${item.replyTo!.uuid}'),
item: item.replyTo!,
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isReply: true,
).paddingOnly(left: 24, right: 4, bottom: 2),
ChatMessage(
key: Key('m${item.uuid}'),
item: item,
isMerged: isMerged,
),
],
);
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}
return ChatMessage(
key: Key('m${item.uuid}'),
item: item,
isMerged: isMerged,
);
}
Widget buildHistory(context, index) {
bool isMerged = false, hasMerged = false;
if (index > 0) {
hasMerged = checkMessageMergeable(
_chatController.currentHistory[index - 1].data,
_chatController.currentHistory[index].data,
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);
}
if (index + 1 < _chatController.currentHistory.length) {
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isMerged = checkMessageMergeable(
_chatController.currentHistory[index].data,
_chatController.currentHistory[index + 1].data,
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);
}
final item = _chatController.currentHistory[index].data;
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return InkWell(
child: Container(
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child: buildHistoryBody(item, isMerged: isMerged).paddingOnly(
top: !isMerged ? 8 : 0,
bottom: !hasMerged ? 8 : 0,
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),
),
onLongPress: () {
showModalBottomSheet(
useRootNavigator: true,
context: context,
builder: (context) => ChatMessageAction(
channel: _channel!,
realm: _channel!.realm,
item: item,
onEdit: () {
setState(() => _messageToEditing = item);
},
onReply: () {
setState(() => _messageToReplying = item);
},
),
);
},
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);
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}
@override
void initState() {
_chatController = ChatHistoryController();
_chatController.initialize();
getChannel().then((_) {
_chatController.getMessages(_channel!, widget.realm);
});
getProfile();
getOngoingCall();
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listenMessages();
super.initState();
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}
@override
Widget build(BuildContext context) {
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if (_isBusy || _channel == null) {
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return Material(
color: Theme.of(context).colorScheme.surface,
child: const Center(
child: CircularProgressIndicator(),
),
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);
}
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String title = _channel?.name ?? 'loading'.tr;
String? placeholder;
if (_channel?.type == 1) {
final otherside = _channel!.members!
.where((e) => e.account.externalId != _accountId)
.first;
title = otherside.account.nick;
placeholder = 'messageInputPlaceholder'.trParams(
{'channel': '@${otherside.account.name}'},
);
}
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final ChatCallProvider call = Get.find();
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return Scaffold(
appBar: AppBar(
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title: AppBarTitle(title),
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centerTitle: false,
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titleSpacing: SolianTheme.titleSpacing(context),
toolbarHeight: SolianTheme.toolbarHeight(context),
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actions: [
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const BackgroundStateWidget(),
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Builder(builder: (context) {
if (_isBusy) return const SizedBox();
return ChatCallButton(
realm: _channel!.realm,
channel: _channel!,
ongoingCall: _ongoingCall,
);
}),
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IconButton(
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icon: const Icon(Icons.more_vert),
onPressed: () {
AppRouter.instance
.pushNamed(
'channelDetail',
pathParameters: {'alias': widget.alias},
queryParameters: {'realm': widget.realm},
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extra: ChannelDetailArguments(
profile: _channelProfile!,
channel: _channel!,
),
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)
.then((value) {
if (value == false) AppRouter.instance.pop();
if (value != null) {
final resp = Channel.fromJson(value as Map<String, dynamic>);
getChannel(overrideAlias: resp.alias);
}
});
},
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),
SizedBox(
width: SolianTheme.isLargeScreen(context) ? 8 : 16,
),
],
),
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body: Stack(
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children: [
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Column(
children: [
Expanded(
child: CustomScrollView(
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reverse: true,
slivers: [
Obx(() {
return SliverList.builder(
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key: Key('chat-history#${_channel!.id}'),
itemCount: _chatController.currentHistory.length,
itemBuilder: buildHistory,
);
}),
Obx(() {
final amount = _chatController.totalHistoryCount -
_chatController.currentHistory.length;
if (amount.value <= 0 ||
_chatController.isLoading.isTrue) {
return const SliverToBoxAdapter(child: SizedBox());
}
return SliverToBoxAdapter(
child: ListTile(
tileColor:
Theme.of(context).colorScheme.surfaceContainerLow,
leading: const Icon(Icons.sync_disabled),
title: Text('messageUnsync'.tr),
subtitle: Text('messageUnsyncCaption'.trParams({
'count': amount.string,
})),
onTap: () {
_chatController.getMoreMessages(
_channel!,
widget.realm,
);
},
),
);
}),
Obx(() {
if (_chatController.isLoading.isFalse) {
return const SliverToBoxAdapter(child: SizedBox());
}
return SliverToBoxAdapter(
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child: const LinearProgressIndicator().animate().slideY(),
);
}),
],
),
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),
ClipRect(
child: BackdropFilter(
filter: ImageFilter.blur(sigmaX: 50, sigmaY: 50),
child: SafeArea(
child: ChatMessageInput(
edit: _messageToEditing,
reply: _messageToReplying,
realm: widget.realm,
placeholder: placeholder,
channel: _channel!,
onSent: (Message item) {
setState(() {
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_chatController.addTemporaryMessage(item);
});
},
onReset: () {
setState(() {
_messageToReplying = null;
_messageToEditing = null;
});
},
),
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),
),
),
],
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),
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if (_ongoingCall != null)
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Positioned(
top: 0,
left: 0,
right: 0,
child: MaterialBanner(
padding: const EdgeInsets.only(left: 16, top: 4, bottom: 4),
leading: const Icon(Icons.call_received),
backgroundColor: Theme.of(context).colorScheme.surfaceContainer,
dividerColor: Colors.transparent,
content: Text('callOngoing'.tr),
actions: [
Obx(() {
if (call.current.value == null) {
return TextButton(
onPressed: showCallPrejoin,
child: Text('callJoin'.tr),
);
} else if (call.channel.value?.id == _channel?.id) {
return TextButton(
onPressed: () => call.gotoScreen(context),
child: Text('callResume'.tr),
);
} else {
return TextButton(
onPressed: null,
child: Text('callJoin'.tr),
);
}
})
],
),
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),
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],
),
);
}
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@override
void dispose() {
_subscription?.cancel();
super.dispose();
}
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}