lib/controllers/chat_history_controller.dart

@@ -0,0 +1,48 @@
+import 'package:get/get.dart';
+import 'package:solian/models/channel.dart';
+import 'package:solian/models/message.dart';
+import 'package:solian/providers/message/helper.dart';
+import 'package:solian/providers/message/history.dart';
+
+class ChatHistoryController {
+  late final MessageHistoryDb database;
+
+  final RxList<LocalMessage> currentHistory = RxList.empty(growable: true);
+  final RxInt totalHistoryCount = 0.obs;
+
+  initialize() async {
+    database = await createHistoryDb();
+    currentHistory.clear();
+  }
+
+  Future<void> getMessages(Channel channel, String scope) async {
+    totalHistoryCount.value = await database.syncMessages(channel, scope: scope);
+    await syncHistory(channel);
+  }
+
+  Future<void> syncHistory(Channel channel) async {
+    currentHistory.replaceRange(0, currentHistory.length,
+        await database.localMessages.findAllByChannel(channel.id));
+  }
+
+  receiveMessage(Message remote) async {
+    final entry = await database.receiveMessage(remote);
+    totalHistoryCount.value++;
+    currentHistory.add(entry);
+  }
+
+  void replaceMessage(Message remote) async {
+    final entry = await database.replaceMessage(remote);
+    currentHistory.replaceRange(
+      0,
+      currentHistory.length,
+      currentHistory.map((x) => x.id == entry.id ? entry : x),
+    );
+  }
+
+  void burnMessage(int id) async {
+    await database.burnMessage(id);
+    totalHistoryCount.value--;
+    currentHistory.removeWhere((x) => x.id == id);
+  }
+}

lib/models/account.dart

@@ -81,24 +81,24 @@ class AccountBadge {
   });
 
   factory AccountBadge.fromJson(Map<String, dynamic> json) => AccountBadge(
-        id: json["id"],
+        id: json['id'],
-        accountId: json["account_id"],
+        accountId: json['account_id'],
-        updatedAt: DateTime.parse(json["updated_at"]),
+        updatedAt: DateTime.parse(json['updated_at']),
-        createdAt: DateTime.parse(json["created_at"]),
+        createdAt: DateTime.parse(json['created_at']),
-        deletedAt: json["deleted_at"] != null
+        deletedAt: json['deleted_at'] != null
-            ? DateTime.parse(json["deleted_at"])
+            ? DateTime.parse(json['deleted_at'])
             : null,
-        metadata: json["metadata"],
+        metadata: json['metadata'],
-        type: json["type"],
+        type: json['type'],
       );
 
   Map<String, dynamic> toJson() => {
-        "id": id,
+        'id': id,
-        "account_id": accountId,
+        'account_id': accountId,
-        "created_at": createdAt.toIso8601String(),
+        'created_at': createdAt.toIso8601String(),
-        "updated_at": updatedAt.toIso8601String(),
+        'updated_at': updatedAt.toIso8601String(),
-        "deleted_at": deletedAt?.toIso8601String(),
+        'deleted_at': deletedAt?.toIso8601String(),
-        "metadata": metadata,
+        'metadata': metadata,
-        "type": type,
+        'type': type,
       };
 }

lib/models/attachment.dart

@@ -38,40 +38,40 @@ class Attachment {
   });
 
   factory Attachment.fromJson(Map<String, dynamic> json) => Attachment(
-    id: json["id"],
+    id: json['id'],
-    createdAt: DateTime.parse(json["created_at"]),
+    createdAt: DateTime.parse(json['created_at']),
-    updatedAt: DateTime.parse(json["updated_at"]),
+    updatedAt: DateTime.parse(json['updated_at']),
-    deletedAt: json["deleted_at"],
+    deletedAt: json['deleted_at'],
-    uuid: json["uuid"],
+    uuid: json['uuid'],
-    size: json["size"],
+    size: json['size'],
-    name: json["name"],
+    name: json['name'],
-    alt: json["alt"],
+    alt: json['alt'],
-    usage: json["usage"],
+    usage: json['usage'],
-    mimetype: json["mimetype"],
+    mimetype: json['mimetype'],
-    hash: json["hash"],
+    hash: json['hash'],
-    destination: json["destination"],
+    destination: json['destination'],
-    metadata: json["metadata"],
+    metadata: json['metadata'],
-    isMature: json["is_mature"],
+    isMature: json['is_mature'],
-    account: Account.fromJson(json["account"]),
+    account: Account.fromJson(json['account']),
-    accountId: json["account_id"],
+    accountId: json['account_id'],
   );
 
   Map<String, dynamic> toJson() => {
-    "id": id,
+    'id': id,
-    "created_at": createdAt.toIso8601String(),
+    'created_at': createdAt.toIso8601String(),
-    "updated_at": updatedAt.toIso8601String(),
+    'updated_at': updatedAt.toIso8601String(),
-    "deleted_at": deletedAt,
+    'deleted_at': deletedAt,
-    "uuid": uuid,
+    'uuid': uuid,
-    "size": size,
+    'size': size,
-    "name": name,
+    'name': name,
-    "alt": alt,
+    'alt': alt,
-    "usage": usage,
+    'usage': usage,
-    "mimetype": mimetype,
+    'mimetype': mimetype,
-    "hash": hash,
+    'hash': hash,
-    "destination": destination,
+    'destination': destination,
-    "metadata": metadata,
+    'metadata': metadata,
-    "is_mature": isMature,
+    'is_mature': isMature,
-    "account": account.toJson(),
+    'account': account.toJson(),
-    "account_id": accountId,
+    'account_id': accountId,
   };
 }

lib/models/message.dart

@@ -44,8 +44,8 @@ class Message {
         deletedAt: json['deleted_at'],
         content: json['content'],
         type: json['type'],
-        attachments: json["attachments"] != null
+        attachments: json['attachments'] != null
-            ? List<int>.from(json["attachments"])
+            ? List<int>.from(json['attachments'])
             : null,
         channel:
             json['channel'] != null ? Channel.fromJson(json['channel']) : null,

lib/models/post.dart

@@ -53,36 +53,36 @@ class Post {
   });
 
   factory Post.fromJson(Map<String, dynamic> json) => Post(
-        id: json["id"],
+        id: json['id'],
-        createdAt: DateTime.parse(json["created_at"]),
+        createdAt: DateTime.parse(json['created_at']),
-        updatedAt: DateTime.parse(json["updated_at"]),
+        updatedAt: DateTime.parse(json['updated_at']),
-        deletedAt: json["deleted_at"] != null
+        deletedAt: json['deleted_at'] != null
             ? DateTime.parse(json['deleted_at'])
             : null,
-        alias: json["alias"],
+        alias: json['alias'],
-        content: json["content"],
+        content: json['content'],
-        tags: json["tags"],
+        tags: json['tags'],
-        categories: json["categories"],
+        categories: json['categories'],
-        reactions: json["reactions"],
+        reactions: json['reactions'],
-        replies: json["replies"],
+        replies: json['replies'],
-        attachments: json["attachments"] != null
+        attachments: json['attachments'] != null
-            ? List<int>.from(json["attachments"])
+            ? List<int>.from(json['attachments'])
             : null,
-        replyId: json["reply_id"],
+        replyId: json['reply_id'],
-        repostId: json["repost_id"],
+        repostId: json['repost_id'],
-        realmId: json["realm_id"],
+        realmId: json['realm_id'],
         replyTo:
-            json["reply_to"] != null ? Post.fromJson(json["reply_to"]) : null,
+            json['reply_to'] != null ? Post.fromJson(json['reply_to']) : null,
         repostTo:
-            json["repost_to"] != null ? Post.fromJson(json["repost_to"]) : null,
+            json['repost_to'] != null ? Post.fromJson(json['repost_to']) : null,
-        realm: json["realm"] != null ? Realm.fromJson(json["realm"]) : null,
+        realm: json['realm'] != null ? Realm.fromJson(json['realm']) : null,
-        publishedAt: json["published_at"] != null ? DateTime.parse(json["published_at"]) : null,
+        publishedAt: json['published_at'] != null ? DateTime.parse(json['published_at']) : null,
-        authorId: json["author_id"],
+        authorId: json['author_id'],
-        author: Account.fromJson(json["author"]),
+        author: Account.fromJson(json['author']),
-        replyCount: json["reply_count"],
+        replyCount: json['reply_count'],
-        reactionCount: json["reaction_count"],
+        reactionCount: json['reaction_count'],
-        reactionList: json["reaction_list"] != null
+        reactionList: json['reaction_list'] != null
-            ? json["reaction_list"]
+            ? json['reaction_list']
                 .map((key, value) => MapEntry(
                     key,
                     int.tryParse(value.toString()) ??
@@ -92,28 +92,28 @@ class Post {
       );
 
   Map<String, dynamic> toJson() => {
-        "id": id,
+        'id': id,
-        "created_at": createdAt.toIso8601String(),
+        'created_at': createdAt.toIso8601String(),
-        "updated_at": updatedAt.toIso8601String(),
+        'updated_at': updatedAt.toIso8601String(),
-        "deleted_at": deletedAt,
+        'deleted_at': deletedAt,
-        "alias": alias,
+        'alias': alias,
-        "content": content,
+        'content': content,
-        "tags": tags,
+        'tags': tags,
-        "categories": categories,
+        'categories': categories,
-        "reactions": reactions,
+        'reactions': reactions,
-        "replies": replies,
+        'replies': replies,
-        "attachments": attachments,
+        'attachments': attachments,
-        "reply_id": replyId,
+        'reply_id': replyId,
-        "repost_id": repostId,
+        'repost_id': repostId,
-        "realm_id": realmId,
+        'realm_id': realmId,
-        "reply_to": replyTo?.toJson(),
+        'reply_to': replyTo?.toJson(),
-        "repost_to": repostTo?.toJson(),
+        'repost_to': repostTo?.toJson(),
-        "realm": realm?.toJson(),
+        'realm': realm?.toJson(),
-        "published_at": publishedAt?.toIso8601String(),
+        'published_at': publishedAt?.toIso8601String(),
-        "author_id": authorId,
+        'author_id': authorId,
-        "author": author.toJson(),
+        'author': author.toJson(),
-        "reply_count": replyCount,
+        'reply_count': replyCount,
-        "reaction_count": reactionCount,
+        'reaction_count': reactionCount,
-        "reaction_list": reactionList,
+        'reaction_list': reactionList,
       };
 }

lib/providers/account.dart

@@ -190,10 +190,10 @@ class AccountProvider extends GetxController {
     }
 
     if (PlatformInfo.isIOS || PlatformInfo.isMacOS) {
-      provider = "apple";
+      provider = 'apple';
       token = await FirebaseMessaging.instance.getAPNSToken();
     } else {
-      provider = "firebase";
+      provider = 'firebase';
       token = await FirebaseMessaging.instance.getToken();
     }
 

lib/providers/auth.dart

@@ -79,7 +79,7 @@ class AuthProvider extends GetConnect {
 
     if (credentials!.isExpired) {
       await refreshCredentials();
-      log("Refreshed credentials at ${DateTime.now()}");
+      log('Refreshed credentials at ${DateTime.now()}');
     }
   }
 

lib/providers/message/helper.dart

@@ -13,19 +13,23 @@ Future<MessageHistoryDb> createHistoryDb() async {
 
 extension MessageHistoryHelper on MessageHistoryDb {
   receiveMessage(Message remote) async {
-    await localMessages.insert(LocalMessage(
+    final entry = LocalMessage(
       remote.id,
       remote,
       remote.channelId,
-    ));
+    );
+    await localMessages.insert(entry);
+    return entry;
   }
 
   replaceMessage(Message remote) async {
-    await localMessages.update(LocalMessage(
+    final entry = LocalMessage(
       remote.id,
       remote,
       remote.channelId,
-    ));
+    );
+    await localMessages.update(entry);
+    return entry;
   }
 
   burnMessage(int id) async {
@@ -38,18 +42,22 @@ extension MessageHistoryHelper on MessageHistoryDb {
     final data = await _getRemoteMessages(
       channel,
       scope,
-      remainBreath: 3,
+      remainBreath: 10,
       offset: offset,
       onBrake: (items) {
         return items.any((x) => x.id == lastOne?.id);
       },
     );
-    await localMessages.insertBulk(
+    if (data != null) {
-      data.map((x) => LocalMessage(x.id, x, x.channelId)).toList(),
+      await localMessages.insertBulk(
-    );
+        data.$1.map((x) => LocalMessage(x.id, x, x.channelId)).toList(),
+      );
+    }
+
+    return data?.$2 ?? 0;
   }
 
-  Future<List<Message>> _getRemoteMessages(
+  Future<(List<Message>, int)?> _getRemoteMessages(
     Channel channel,
     String scope, {
     required int remainBreath,
@@ -58,11 +66,11 @@ extension MessageHistoryHelper on MessageHistoryDb {
     offset = 0,
   }) async {
     if (remainBreath <= 0) {
-      return List.empty();
+      return null;
     }
 
     final AuthProvider auth = Get.find();
-    if (!await auth.isAuthorized) return List.empty();
+    if (!await auth.isAuthorized) return null;
 
     final client = auth.configureClient('messaging');
 
@@ -78,18 +86,20 @@ extension MessageHistoryHelper on MessageHistoryDb {
         response.data?.map((e) => Message.fromJson(e)).toList() ?? List.empty();
 
     if (onBrake != null && onBrake(result)) {
-      return result;
+      return (result, response.count);
     }
 
-    final expandResult = await _getRemoteMessages(
+    final expandResult = (await _getRemoteMessages(
-      channel,
+          channel,
-      scope,
+          scope,
-      remainBreath: remainBreath - 1,
+          remainBreath: remainBreath - 1,
-      take: take,
+          take: take,
-      offset: offset + result.length,
+          offset: offset + result.length,
-    );
+        ))
+            ?.$1 ??
+        List.empty();
 
-    return [...result, ...expandResult];
+    return ([...result, ...expandResult], response.count);
   }
 
   Future<List<LocalMessage>> listMessages(Channel channel) async {

lib/screens/channel/call/call.dart

@@ -27,9 +27,9 @@ class _CallScreenState extends State<CallScreen> {
         DateTime.now().difference(provider.current.value!.createdAt);
 
     String twoDigits(int n) => n.toString().padLeft(2, '0');
-    String formattedTime = "${twoDigits(duration.inHours)}:"
+    String formattedTime = '${twoDigits(duration.inHours)}:'
-        "${twoDigits(duration.inMinutes.remainder(60))}:"
+        '${twoDigits(duration.inMinutes.remainder(60))}:'
-        "${twoDigits(duration.inSeconds.remainder(60))}";
+        '${twoDigits(duration.inSeconds.remainder(60))}';
 
     return formattedTime;
   }
@@ -66,7 +66,7 @@ class _CallScreenState extends State<CallScreen> {
                 text: 'call'.tr,
                 style: Theme.of(context).textTheme.titleLarge,
               ),
-              const TextSpan(text: "\n"),
+              const TextSpan(text: '\n'),
               TextSpan(
                 text: currentDuration,
                 style: Theme.of(context).textTheme.bodySmall,

lib/screens/channel/channel_chat.dart

@@ -2,8 +2,8 @@ import 'dart:async';
 import 'dart:ui';
 
 import 'package:flutter/material.dart';
-import 'package:flutter_animate/flutter_animate.dart';
 import 'package:get/get.dart';
+import 'package:solian/controllers/chat_history_controller.dart';
 import 'package:solian/exts.dart';
 import 'package:solian/models/call.dart';
 import 'package:solian/models/channel.dart';
@@ -13,8 +13,6 @@ import 'package:solian/providers/auth.dart';
 import 'package:solian/providers/chat.dart';
 import 'package:solian/providers/content/call.dart';
 import 'package:solian/providers/content/channel.dart';
-import 'package:solian/providers/message/helper.dart';
-import 'package:solian/providers/message/history.dart';
 import 'package:solian/router.dart';
 import 'package:solian/screens/channel/channel_detail.dart';
 import 'package:solian/theme.dart';
@@ -41,10 +39,7 @@ class ChannelChatScreen extends StatefulWidget {
 }
 
 class _ChannelChatScreenState extends State<ChannelChatScreen> {
-  final _chatScrollController = ScrollController();
-
   bool _isBusy = false;
-  bool _isLoadingMore = false;
   int? _accountId;
 
   String? _overrideAlias;
@@ -54,9 +49,7 @@ class _ChannelChatScreenState extends State<ChannelChatScreen> {
   ChannelMember? _channelProfile;
   StreamSubscription<NetworkPackage>? _subscription;
 
-  int _nextHistorySyncOffset = 0;
+  late final ChatHistoryController _chatController;
-  MessageHistoryDb? _db;
-  List<LocalMessage> _currentHistory = List.empty();
 
   getProfile() async {
     final AuthProvider auth = Get.find();
@@ -111,22 +104,6 @@ class _ChannelChatScreenState extends State<ChannelChatScreen> {
     setState(() => _isBusy = false);
   }
 
-  Future<void> getMessages() async {
-    await _db!.syncMessages(
-      _channel!,
-      scope: widget.realm,
-      offset: _nextHistorySyncOffset,
-    );
-    await syncHistory();
-  }
-
-  Future<void> syncHistory() async {
-    final data = await _db!.localMessages.findAllByChannel(_channel!.id);
-    setState(() {
-      _currentHistory = data;
-    });
-  }
-
   void listenMessages() {
     final ChatProvider provider = Get.find();
     _subscription = provider.stream.stream.listen((event) {
@@ -134,19 +111,19 @@ class _ChannelChatScreenState extends State<ChannelChatScreen> {
         case 'messages.new':
           final payload = Message.fromJson(event.payload!);
           if (payload.channelId == _channel?.id) {
-            _db?.receiveMessage(payload);
+            _chatController.receiveMessage(payload);
           }
           break;
         case 'messages.update':
           final payload = Message.fromJson(event.payload!);
           if (payload.channelId == _channel?.id) {
-            _db?.replaceMessage(payload);
+            _chatController.replaceMessage(payload);
           }
           break;
         case 'messages.burnt':
           final payload = Message.fromJson(event.payload!);
           if (payload.channelId == _channel?.id) {
-            _db?.burnMessage(payload.id);
+            _chatController.burnMessage(payload.id);
           }
           break;
         case 'calls.new':
@@ -157,7 +134,6 @@ class _ChannelChatScreenState extends State<ChannelChatScreen> {
           _ongoingCall = null;
           break;
       }
-      syncHistory();
     });
   }
 
@@ -211,18 +187,18 @@ class _ChannelChatScreenState extends State<ChannelChatScreen> {
     bool isMerged = false, hasMerged = false;
     if (index > 0) {
       hasMerged = checkMessageMergeable(
-        _currentHistory[index - 1].data,
+        _chatController.currentHistory[index - 1].data,
-        _currentHistory[index].data,
+        _chatController.currentHistory[index].data,
       );
     }
-    if (index + 1 < _currentHistory.length) {
+    if (index + 1 < _chatController.currentHistory.length) {
       isMerged = checkMessageMergeable(
-        _currentHistory[index].data,
+        _chatController.currentHistory[index].data,
-        _currentHistory[index + 1].data,
+        _chatController.currentHistory[index + 1].data,
       );
     }
 
-    final item = _currentHistory[index].data;
+    final item = _chatController.currentHistory[index].data;
 
     return InkWell(
       child: Container(
@@ -253,28 +229,17 @@ class _ChannelChatScreenState extends State<ChannelChatScreen> {
 
   @override
   void initState() {
-    _chatScrollController.addListener(() async {
+    _chatController = ChatHistoryController();
-      if (_chatScrollController.position.pixels ==
+    _chatController.initialize();
-          _chatScrollController.position.maxScrollExtent) {
+
-        setState(() => _isLoadingMore = true);
+    getChannel().then((_) {
-        _nextHistorySyncOffset = _currentHistory.length;
+      _chatController.getMessages(_channel!, widget.realm);
-        await getMessages();
-        setState(() => _isLoadingMore = false);
-      }
     });
 
-    createHistoryDb().then((db) async {
+    getProfile();
-      _db = db;
+    getOngoingCall();
 
-      await getChannel();
+    listenMessages();
-      await syncHistory();
-
-      getProfile();
-      getOngoingCall();
-      getMessages();
-
-      listenMessages();
-    });
 
     super.initState();
   }
@@ -352,52 +317,66 @@ class _ChannelChatScreenState extends State<ChannelChatScreen> {
         children: [
           Column(
             children: [
-              if (_isLoadingMore)
-                const LinearProgressIndicator()
-                    .paddingOnly(bottom: 4)
-                    .animate()
-                    .slideY(),
               Expanded(
-                child: ListView.builder(
+                child: CustomScrollView(
-                  controller: _chatScrollController,
-                  itemCount: _currentHistory.length,
-                  clipBehavior: Clip.none,
                   reverse: true,
-                  itemBuilder: buildHistory,
+                  slivers: [
-                ).paddingOnly(bottom: 56),
+                    Obx(() {
+                      return SliverList.builder(
+                        itemCount: _chatController.currentHistory.length,
+                        itemBuilder: buildHistory,
+                      );
+                    }),
+                    Obx(() {
+                      final amount = _chatController.totalHistoryCount -
+                          _chatController.currentHistory.length;
+                      if (amount > 0) {
+                        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: () {},
+                          ),
+                        );
+                      } else {
+                        return const SliverToBoxAdapter(child: SizedBox());
+                      }
+                    }),
+                  ],
+                ),
               ),
-            ],
+              ClipRect(
-          ),
+                child: BackdropFilter(
-          Positioned(
+                  filter: ImageFilter.blur(sigmaX: 50, sigmaY: 50),
-            bottom: 0,
+                  child: SafeArea(
-            left: 0,
+                    child: ChatMessageInput(
-            right: 0,
+                      edit: _messageToEditing,
-            child: ClipRect(
+                      reply: _messageToReplying,
-              child: BackdropFilter(
+                      realm: widget.realm,
-                filter: ImageFilter.blur(sigmaX: 50, sigmaY: 50),
+                      placeholder: placeholder,
-                child: SafeArea(
+                      channel: _channel!,
-                  child: ChatMessageInput(
+                      onSent: (Message item) {
-                    edit: _messageToEditing,
+                        setState(() {
-                    reply: _messageToReplying,
+                          _chatController.receiveMessage(item);
-                    realm: widget.realm,
+                        });
-                    placeholder: placeholder,
+                      },
-                    channel: _channel!,
+                      onReset: () {
-                    onSent: (Message item) {
+                        setState(() {
-                      setState(() {
+                          _messageToReplying = null;
-                        _db?.receiveMessage(item);
+                          _messageToEditing = null;
-                        syncHistory();
+                        });
-                      });
+                      },
-                    },
+                    ),
-                    onReset: () {
-                      setState(() {
-                        _messageToReplying = null;
-                        _messageToEditing = null;
-                      });
-                    },
                   ),
                 ),
               ),
-            ),
+            ],
           ),
           if (_ongoingCall != null)
             Positioned(

lib/translations.dart

@@ -164,6 +164,8 @@ class SolianMessages extends Translations {
           'channelNotifyLevelMentioned': 'Only mentioned',
           'channelNotifyLevelNone': 'Ignore all',
           'channelNotifyLevelApplied': 'Your notification settings has been applied.',
+          'messageUnsync': 'Messages Un-synced',
+          'messageUnsyncCaption': '@count message(s) still in un-synced.',
           'messageDecoding': 'Decoding...',
           'messageDecodeFailed': 'Unable to decode: @message',
           'messageInputPlaceholder': 'Message @channel',
@@ -364,6 +366,8 @@ class SolianMessages extends Translations {
           'channelNotifyLevelMentioned': '仅提及',
           'channelNotifyLevelNone': '忽略一切',
           'channelNotifyLevelApplied': '你的通知设置已经应用。',
+          'messageUnsync': '消息未同步',
+          'messageUnsyncCaption': '还有 @count 条消息未同步',
           'messageDecoding': '解码信息中…',
           'messageDecodeFailed': '解码信息失败：@message',
           'messageInputPlaceholder': '在 @channel 发信息',

lib/widgets/account/friend_list.dart

@@ -67,7 +67,7 @@ class SliverFriendList extends StatelessWidget {
   Widget build(BuildContext context) {
     return SliverList.builder(
       itemCount: items.length,
-      itemBuilder: (_, __) => buildItem(_, __),
+      itemBuilder: (context, idx) => buildItem(context, idx),
     );
   }
 }

lib/widgets/chat/call/chat_call_action.dart

@@ -65,7 +65,7 @@ class _ChatCallButtonState extends State<ChatCallButton> {
         ? widget.realm?.alias
         : 'global';
     final resp = await client
-        .delete('/api/channels/${scope}/${widget.channel.alias}/calls/ongoing');
+        .delete('/api/channels/$scope/${widget.channel.alias}/calls/ongoing');
     if (resp.statusCode == 200) {
       if (widget.onEnded != null) widget.onEnded!();
     } else {

lib/widgets/posts/post_item.dart

@@ -98,7 +98,7 @@ class _PostItemState extends State<PostItem> {
 
     if (labels.isNotEmpty) {
       return Text(
-        labels.join(" · "),
+        labels.join(' · '),
         textAlign: TextAlign.left,
         style: TextStyle(
           fontSize: 12,