✨ Chat messaging

lib/main.dart

@@ -2,6 +2,7 @@ import 'package:flutter/material.dart';
 import 'package:get/get.dart';
 import 'package:solian/providers/account.dart';
 import 'package:solian/providers/auth.dart';
+import 'package:solian/providers/chat.dart';
 import 'package:solian/providers/content/attachment.dart';
 import 'package:solian/providers/content/channel.dart';
 import 'package:solian/providers/content/post.dart';
@@ -36,6 +37,7 @@ class SolianApp extends StatelessWidget {
         Get.lazyPut(() => FriendProvider());
         Get.lazyPut(() => PostProvider());
         Get.lazyPut(() => AttachmentProvider());
+        Get.lazyPut(() => ChatProvider());
         Get.lazyPut(() => AccountProvider());
         Get.lazyPut(() => ChannelProvider());
         Get.lazyPut(() => RealmProvider());
@@ -44,6 +46,7 @@ class SolianApp extends StatelessWidget {
         auth.isAuthorized.then((value) async {
           if (value) {
             Get.find<AccountProvider>().connect();
+            Get.find<ChatProvider>().connect();
           }
         });
       },

lib/models/message.dart

@@ -1,17 +1,15 @@
-import 'dart:convert';
-
 import 'package:solian/models/account.dart';
 import 'package:solian/models/channel.dart';
 
 class Message {
   int id;
+  String uuid;
   DateTime createdAt;
   DateTime updatedAt;
   DateTime? deletedAt;
   Map<String, dynamic> content;
-  Map<String, dynamic>? metadata;
   String type;
-  List<String>? attachments;
+  List<int>? attachments;
   Channel? channel;
   Sender sender;
   int? replyId;
@@ -23,11 +21,11 @@ class Message {
 
   Message({
     required this.id,
+    required this.uuid,
     required this.createdAt,
     required this.updatedAt,
     this.deletedAt,
     required this.content,
-    required this.metadata,
     required this.type,
     this.attachments,
     this.channel,
@@ -40,13 +38,15 @@ class Message {
 
   factory Message.fromJson(Map<String, dynamic> json) => Message(
         id: json['id'],
+        uuid: json['uuid'],
         createdAt: DateTime.parse(json['created_at']),
         updatedAt: DateTime.parse(json['updated_at']),
         deletedAt: json['deleted_at'],
         content: json['content'],
-        metadata: json['metadata'],
         type: json['type'],
-        attachments: json['attachments'],
+        attachments: json["attachments"] != null
+            ? List<int>.from(json["attachments"])
+            : null,
         channel: Channel.fromJson(json['channel']),
         sender: Sender.fromJson(json['sender']),
         replyId: json['reply_id'],
@@ -59,11 +59,11 @@ class Message {
 
   Map<String, dynamic> toJson() => {
         'id': id,
+        'uuid': uuid,
         'created_at': createdAt.toIso8601String(),
         'updated_at': updatedAt.toIso8601String(),
         'deleted_at': deletedAt,
         'content': content,
-        'metadata': metadata,
         'type': type,
         'attachments': attachments,
         'channel': channel?.toJson(),

lib/providers/account.dart

@@ -144,7 +144,7 @@ class AccountProvider extends GetxController {
     final AuthProvider auth = Get.find();
     if (!await auth.isAuthorized) return;
 
-    final client = GetConnect();
+    final client = GetConnect(maxAuthRetries: 3);
     client.httpClient.baseUrl = ServiceFinder.services['passport'];
     client.httpClient.addAuthenticator(auth.requestAuthenticator);
 

lib/providers/auth.dart

@@ -6,6 +6,7 @@ import 'package:flutter_secure_storage/flutter_secure_storage.dart';
 import 'package:get/get.dart';
 import 'package:get/get_connect/http/src/request/request.dart';
 import 'package:solian/providers/account.dart';
+import 'package:solian/providers/chat.dart';
 import 'package:solian/services.dart';
 import 'package:oauth2/oauth2.dart' as oauth2;
 
@@ -98,6 +99,7 @@ class AuthProvider extends GetConnect {
 
     Get.find<AccountProvider>().connect();
     Get.find<AccountProvider>().notifyPrefetch();
+    Get.find<ChatProvider>().connect();
 
     return credentials!;
   }
@@ -105,6 +107,7 @@ class AuthProvider extends GetConnect {
   void signout() {
     _cacheUserProfileResponse = null;
 
+    Get.find<ChatProvider>().disconnect();
     Get.find<AccountProvider>().disconnect();
     Get.find<AccountProvider>().notifications.clear();
     Get.find<AccountProvider>().notificationUnread.value = 0;
@@ -121,7 +124,7 @@ class AuthProvider extends GetConnect {
       return _cacheUserProfileResponse!;
     }
 
-    final client = GetConnect();
+    final client = GetConnect(maxAuthRetries: 3);
     client.httpClient.baseUrl = ServiceFinder.services['passport'];
     client.httpClient.addAuthenticator(requestAuthenticator);
 

lib/providers/chat.dart

@@ -0,0 +1,67 @@
+import 'dart:async';
+import 'dart:convert';
+import 'dart:io';
+
+import 'package:get/get.dart';
+import 'package:solian/models/packet.dart';
+import 'package:solian/providers/auth.dart';
+import 'package:solian/services.dart';
+import 'package:web_socket_channel/io.dart';
+
+class ChatProvider extends GetxController {
+  RxBool isConnected = false.obs;
+  RxBool isConnecting = false.obs;
+
+  IOWebSocketChannel? websocket;
+
+  StreamController<NetworkPackage> stream = StreamController.broadcast();
+
+  void connect({noRetry = false}) async {
+    final AuthProvider auth = Get.find();
+    if (!await auth.isAuthorized) throw Exception('unauthorized');
+
+    if (auth.credentials == null) await auth.loadCredentials();
+
+    final uri = Uri.parse(
+      '${ServiceFinder.services['messaging']}/api/ws?tk=${auth.credentials!.accessToken}'
+          .replaceFirst('http', 'ws'),
+    );
+
+    isConnecting.value = true;
+
+    try {
+      websocket = IOWebSocketChannel.connect(uri);
+      await websocket?.ready;
+    } catch (e) {
+      if (!noRetry) {
+        await auth.refreshCredentials();
+        return connect(noRetry: true);
+      }
+    }
+
+    listen();
+
+    isConnected.value = true;
+    isConnecting.value = false;
+  }
+
+  void disconnect() {
+    websocket?.sink.close(WebSocketStatus.normalClosure);
+    isConnected.value = false;
+  }
+
+  void listen() {
+    websocket?.stream.listen(
+      (event) {
+        final packet = NetworkPackage.fromJson(jsonDecode(event));
+        stream.sink.add(packet);
+      },
+      onDone: () {
+        isConnected.value = false;
+      },
+      onError: (err) {
+        isConnected.value = false;
+      },
+    );
+  }
+}

lib/providers/content/attachment.dart

@@ -37,7 +37,7 @@ class AttachmentProvider extends GetConnect {
     final AuthProvider auth = Get.find();
     if (!await auth.isAuthorized) throw Exception('unauthorized');
 
-    final client = GetConnect();
+    final client = GetConnect(maxAuthRetries: 3);
     client.httpClient.baseUrl = ServiceFinder.services['paperclip'];
     client.httpClient.addAuthenticator(auth.requestAuthenticator);
 
@@ -76,7 +76,7 @@ class AttachmentProvider extends GetConnect {
     final AuthProvider auth = Get.find();
     if (!await auth.isAuthorized) throw Exception('unauthorized');
 
-    final client = GetConnect();
+    final client = GetConnect(maxAuthRetries: 3);
     client.httpClient.baseUrl = ServiceFinder.services['paperclip'];
     client.httpClient.addAuthenticator(auth.requestAuthenticator);
 
@@ -100,7 +100,7 @@ class AttachmentProvider extends GetConnect {
     final AuthProvider auth = Get.find();
     if (!await auth.isAuthorized) throw Exception('unauthorized');
 
-    final client = GetConnect();
+    final client = GetConnect(maxAuthRetries: 3);
     client.httpClient.baseUrl = ServiceFinder.services['paperclip'];
     client.httpClient.addAuthenticator(auth.requestAuthenticator);
 

lib/providers/content/channel.dart

@@ -7,7 +7,7 @@ class ChannelProvider extends GetxController {
     final AuthProvider auth = Get.find();
     if (!await auth.isAuthorized) throw Exception('unauthorized');
 
-    final client = GetConnect();
+    final client = GetConnect(maxAuthRetries: 3);
     client.httpClient.baseUrl = ServiceFinder.services['messaging'];
 
     final resp = await client.get('/api/channels/$realm/$alias');
@@ -22,7 +22,7 @@ class ChannelProvider extends GetxController {
     final AuthProvider auth = Get.find();
     if (!await auth.isAuthorized) throw Exception('unauthorized');
 
-    final client = GetConnect();
+    final client = GetConnect(maxAuthRetries: 3);
     client.httpClient.baseUrl = ServiceFinder.services['messaging'];
     client.httpClient.addAuthenticator(auth.requestAuthenticator);
 

lib/providers/content/realm.dart

@@ -7,7 +7,7 @@ class RealmProvider extends GetxController {
     final AuthProvider auth = Get.find();
     if (!await auth.isAuthorized) throw Exception('unauthorized');
 
-    final client = GetConnect();
+    final client = GetConnect(maxAuthRetries: 3);
     client.httpClient.baseUrl = ServiceFinder.services['passport'];
     client.httpClient.addAuthenticator(auth.requestAuthenticator);
 

lib/screens/account/notification.dart

@@ -33,7 +33,7 @@ class _NotificationScreenState extends State<NotificationScreen> {
     }
 
     if (markList.isNotEmpty) {
-      final client = GetConnect();
+      final client = GetConnect(maxAuthRetries: 3);
       client.httpClient.baseUrl = ServiceFinder.services['passport'];
       client.httpClient.addAuthenticator(auth.requestAuthenticator);
 
@@ -58,7 +58,7 @@ class _NotificationScreenState extends State<NotificationScreen> {
 
     setState(() => _isBusy = true);
 
-    final client = GetConnect();
+    final client = GetConnect(maxAuthRetries: 3);
     client.httpClient.baseUrl = ServiceFinder.services['passport'];
     client.httpClient.addAuthenticator(auth.requestAuthenticator);
 

lib/screens/account/personalize.dart

@@ -98,7 +98,7 @@ class _PersonalizeScreenState extends State<PersonalizeScreen> {
       context.showErrorDialog(e);
     }
 
-    final client = GetConnect();
+    final client = GetConnect(maxAuthRetries: 3);
     client.httpClient.baseUrl = ServiceFinder.services['passport'];
     client.httpClient.addAuthenticator(auth.requestAuthenticator);
 
@@ -122,7 +122,7 @@ class _PersonalizeScreenState extends State<PersonalizeScreen> {
 
     setState(() => _isBusy = true);
 
-    final client = GetConnect();
+    final client = GetConnect(maxAuthRetries: 3);
     client.httpClient.baseUrl = ServiceFinder.services['passport'];
     client.httpClient.addAuthenticator(auth.requestAuthenticator);
 

lib/screens/auth/signup.dart

@@ -27,7 +27,7 @@ class _SignUpPopupState extends State<SignUpPopup> {
         nickname.isEmpty ||
         password.isEmpty) return;
 
-    final client = GetConnect();
+    final client = GetConnect(maxAuthRetries: 3);
     client.httpClient.baseUrl = ServiceFinder.services['passport'];
     final resp = await client.post('/api/users', {
       'name': username,

lib/screens/channel/channel_chat.dart

@@ -1,3 +1,5 @@
+import 'dart:async';
+
 import 'package:flutter/material.dart';
 import 'package:flutter_animate/flutter_animate.dart';
 import 'package:get/get.dart';
@@ -5,12 +7,15 @@ import 'package:infinite_scroll_pagination/infinite_scroll_pagination.dart';
 import 'package:solian/exts.dart';
 import 'package:solian/models/channel.dart';
 import 'package:solian/models/message.dart';
+import 'package:solian/models/packet.dart';
 import 'package:solian/models/pagination.dart';
 import 'package:solian/providers/auth.dart';
+import 'package:solian/providers/chat.dart';
 import 'package:solian/providers/content/channel.dart';
 import 'package:solian/services.dart';
 import 'package:solian/theme.dart';
 import 'package:solian/widgets/chat/chat_message.dart';
+import 'package:solian/widgets/chat/chat_message_input.dart';
 
 class ChannelChatScreen extends StatefulWidget {
   final String alias;
@@ -30,6 +35,7 @@ class _ChannelChatScreenState extends State<ChannelChatScreen> {
   bool _isBusy = false;
 
   Channel? _channel;
+  StreamSubscription<NetworkPackage>? _subscription;
 
   final PagingController<int, Message> _pagingController =
       PagingController(firstPageKey: 0);
@@ -53,7 +59,7 @@ class _ChannelChatScreenState extends State<ChannelChatScreen> {
     final AuthProvider auth = Get.find();
     if (!await auth.isAuthorized) return;
 
-    final client = GetConnect();
+    final client = GetConnect(maxAuthRetries: 3);
     client.httpClient.baseUrl = ServiceFinder.services['messaging'];
     client.httpClient.addAuthenticator(auth.requestAuthenticator);
 
@@ -76,10 +82,47 @@ class _ChannelChatScreenState extends State<ChannelChatScreen> {
     }
   }
 
+  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) {
+            final idx = _pagingController.itemList
+                ?.indexWhere((e) => e.uuid == payload.uuid);
+            if ((idx ?? -1) >= 0) {
+              _pagingController.itemList?[idx!] = payload;
+            } else {
+              _pagingController.itemList?.insert(0, payload);
+            }
+          }
+          break;
+        case 'messages.update':
+          final payload = Message.fromJson(event.payload!);
+          if (payload.channelId == _channel?.id) {
+            _pagingController.itemList
+                ?.map((x) => x.id == payload.id ? payload : x)
+                .toList();
+          }
+          break;
+        case 'messages.burnt':
+          final payload = Message.fromJson(event.payload!);
+          if (payload.channelId == _channel?.id) {
+            _pagingController.itemList = _pagingController.itemList
+                ?.where((x) => x.id != payload.id)
+                .toList();
+          }
+          break;
+      }
+      setState(() {});
+    });
+  }
+
   bool checkMessageMergeable(Message? a, Message? b) {
     if (a?.replyTo != null) return false;
     if (a == null || b == null) return false;
-    if (a.senderId != b.senderId) return false;
+    if (a.sender.account.id != b.sender.account.id) return false;
     return a.createdAt.difference(b.createdAt).inMinutes <= 3;
   }
 
@@ -107,7 +150,7 @@ class _ChannelChatScreenState extends State<ChannelChatScreen> {
         ),
         child: ChatMessage(
           item: item,
-          isCompact: isMerged,
+          isMerged: isMerged,
         ),
       ),
       onLongPress: () {},
@@ -124,6 +167,7 @@ class _ChannelChatScreenState extends State<ChannelChatScreen> {
     super.initState();
 
     getChannel().then((_) {
+      listenMessages();
       _pagingController.addPageRequestListener(getMessages);
     });
   }
@@ -150,11 +194,14 @@ class _ChannelChatScreenState extends State<ChannelChatScreen> {
           ),
         ],
       ),
-      body: Column(
+      body: Stack(
+        children: [
+          Column(
             children: [
               Expanded(
                 child: PagedListView<int, Message>(
                   reverse: true,
+                  clipBehavior: Clip.none,
                   pagingController: _pagingController,
                   builderDelegate: PagedChildBuilderDelegate<Message>(
                     animateTransitions: true,
@@ -162,10 +209,32 @@ class _ChannelChatScreenState extends State<ChannelChatScreen> {
                     itemBuilder: chatHistoryBuilder,
                     noItemsFoundIndicatorBuilder: (_) => Container(),
                   ),
+                ).paddingOnly(bottom: 64),
+              ),
+            ],
+          ),
+          Positioned(
+            bottom: MediaQuery.of(context).padding.bottom,
+            left: 16,
+            right: 16,
+            child: ChatMessageInput(
+              realm: widget.realm,
+              channel: _channel!,
+              onSent: (Message item) {
+                setState(() {
+                  _pagingController.itemList?.insert(0, item);
+                });
+              },
             ),
           ),
         ],
       ),
     );
   }
+
+  @override
+  void dispose() {
+    _subscription?.cancel();
+    super.dispose();
+  }
 }

lib/screens/channel/channel_organize.dart

@@ -82,7 +82,7 @@ class _ChannelOrganizeScreenState extends State<ChannelOrganizeScreen> {
 
     setState(() => _isBusy = true);
 
-    final client = GetConnect();
+    final client = GetConnect(maxAuthRetries: 3);
     client.httpClient.baseUrl = ServiceFinder.services['messaging'];
     client.httpClient.addAuthenticator(auth.requestAuthenticator);
 

lib/screens/posts/post_publish.dart

@@ -63,7 +63,7 @@ class _PostPublishingScreenState extends State<PostPublishingScreen> {
 
     setState(() => _isBusy = true);
 
-    final client = GetConnect();
+    final client = GetConnect(maxAuthRetries: 3);
     client.httpClient.baseUrl = ServiceFinder.services['interactive'];
     client.httpClient.addAuthenticator(auth.requestAuthenticator);
 

lib/translations.dart

@@ -103,6 +103,7 @@ class SolianMessages extends Translations {
           'channelTypeDirect': 'DM',
           'messageDecoding': 'Decoding...',
           'messageDecodeFailed': 'Unable to decode: @message',
+          'messageInputPlaceholder': 'Message @channel...',
         },
         'zh_CN': {
           'hide': '隐藏',
@@ -197,6 +198,7 @@ class SolianMessages extends Translations {
           'channelTypeDirect': '私信聊天',
           'messageDecoding': '解码信息中…',
           'messageDecodeFailed': '解码信息失败：@message',
+          'messageInputPlaceholder': '在 @channel 发信息…',
         }
       };
 }

lib/widgets/chat/chat_message.dart

@@ -5,12 +5,19 @@ import 'package:get/get.dart';
 import 'package:solian/models/message.dart';
 import 'package:solian/widgets/account/account_avatar.dart';
 import 'package:timeago/timeago.dart' show format;
+import 'package:url_launcher/url_launcher_string.dart';
 
 class ChatMessage extends StatelessWidget {
   final Message item;
   final bool isCompact;
+  final bool isMerged;
 
-  const ChatMessage({super.key, required this.item, required this.isCompact});
+  const ChatMessage({
+    super.key,
+    required this.item,
+    this.isMerged = false,
+    this.isCompact = false,
+  });
 
   Future<String?> decodeContent(Map<String, dynamic> content) async {
     String? text;
@@ -27,11 +34,84 @@ class ChatMessage extends StatelessWidget {
     return text;
   }
 
-  @override
+  Widget buildContent() {
-  Widget build(BuildContext context) {
     final hasAttachment = item.attachments?.isNotEmpty ?? false;
 
-    return Column(
+    return FutureBuilder(
+      future: decodeContent(item.content),
+      builder: (context, snapshot) {
+        if (!snapshot.hasData) {
+          return Opacity(
+            opacity: 0.8,
+            child: Row(
+              children: [
+                const Icon(Icons.more_horiz),
+                const SizedBox(width: 4),
+                Text('messageDecoding'.tr)
+              ],
+            ),
+          ).animate(onPlay: (c) => c.repeat()).fade(begin: 0, end: 1);
+        } else if (snapshot.hasError) {
+          return Opacity(
+            opacity: 0.9,
+            child: Row(
+              children: [
+                const Icon(Icons.close),
+                const SizedBox(width: 4),
+                Text(
+                  'messageDecodeFailed'
+                      .trParams({'message': snapshot.error.toString()}),
+                )
+              ],
+            ),
+          );
+        }
+
+        return Markdown(
+          shrinkWrap: true,
+          physics: const NeverScrollableScrollPhysics(),
+          data: snapshot.data ?? '',
+          padding: const EdgeInsets.all(0),
+          onTapLink: (text, href, title) async {
+            if (href == null) return;
+            await launchUrlString(
+              href,
+              mode: LaunchMode.externalApplication,
+            );
+          },
+        ).paddingOnly(
+          left: 12,
+          right: 12,
+          top: 2,
+          bottom: hasAttachment ? 4 : 0,
+        );
+      },
+    );
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    Widget widget;
+    if (isMerged) {
+      widget = buildContent().paddingOnly(left: 40);
+    } else if (isCompact) {
+      widget = Row(
+        crossAxisAlignment: CrossAxisAlignment.start,
+        children: [
+          AccountAvatar(content: item.sender.account.avatar, radius: 8),
+          Text(
+            item.sender.account.nick,
+            style: const TextStyle(fontWeight: FontWeight.bold),
+          ),
+          const SizedBox(width: 4),
+          Text(format(item.createdAt, locale: 'en_short')),
+          const SizedBox(width: 4),
+          buildContent(),
+        ],
+      );
+    } else {
+      widget = Column(
+        key: Key('m${item.uuid}'),
         children: [
           Row(
             crossAxisAlignment: CrossAxisAlignment.start,
@@ -51,54 +131,20 @@ class ChatMessage extends StatelessWidget {
                         Text(format(item.createdAt, locale: 'en_short'))
                       ],
                     ).paddingSymmetric(horizontal: 12),
-                  FutureBuilder(
+                    buildContent(),
-                      future: decodeContent(item.content),
-                      builder: (context, snapshot) {
-                        if (!snapshot.hasData) {
-                          return Opacity(
-                            opacity: 0.8,
-                            child: Row(
-                              children: [
-                                const Icon(Icons.more_horiz),
-                                Text('messageDecoding'.tr)
                   ],
                 ),
-                          )
+              ),
-                              .animate(onPlay: (c) => c.repeat())
-                              .fade(begin: 0, end: 1);
-                        } else if (snapshot.hasError) {
-                          return Opacity(
-                            opacity: 0.9,
-                            child: Row(
-                              children: [
-                                const Icon(Icons.close),
-                                Text(
-                                  'messageDecodeFailed'.trParams(
-                                      {'message': snapshot.error.toString()}),
-                                )
             ],
           ),
+        ],
       );
     }
 
-                        return Markdown(
+    if (item.isSending) {
-                          shrinkWrap: true,
+      return Opacity(opacity: 0.65, child: widget);
-                          physics: const NeverScrollableScrollPhysics(),
+    } else {
-                          data: snapshot.data ?? '',
+      return widget;
-                          padding: const EdgeInsets.all(0),
+    }
-                        ).paddingOnly(
-                          left: 12,
-                          right: 12,
-                          top: 2,
-                          bottom: hasAttachment ? 4 : 0,
-                        );
-                      }),
-                ],
-              ),
-            ),
-          ],
-        ),
-      ],
-    );
   }
 }

lib/widgets/chat/chat_message_input.dart

@@ -0,0 +1,158 @@
+import 'package:flutter/material.dart';
+import 'package:get/get.dart';
+import 'package:solian/exts.dart';
+import 'package:solian/models/account.dart';
+import 'package:solian/models/channel.dart';
+import 'package:solian/models/message.dart';
+import 'package:solian/providers/auth.dart';
+import 'package:solian/services.dart';
+import 'package:uuid/uuid.dart';
+
+class ChatMessageInput extends StatefulWidget {
+  final Message? edit;
+  final Message? reply;
+  final Channel channel;
+  final String realm;
+  final Function(Message) onSent;
+
+  const ChatMessageInput({
+    super.key,
+    this.edit,
+    this.reply,
+    required this.channel,
+    required this.realm,
+    required this.onSent,
+  });
+
+  @override
+  State<ChatMessageInput> createState() => _ChatMessageInputState();
+}
+
+class _ChatMessageInputState extends State<ChatMessageInput> {
+  final TextEditingController _textController = TextEditingController();
+  final FocusNode _focusNode = FocusNode();
+
+  List<int> _attachments = List.empty(growable: true);
+
+  Map<String, dynamic> encodeMessage(String content) {
+    // TODO Impl E2EE
+
+    return {
+      'value': content,
+      'keypair_id': null,
+      'algorithm': 'plain',
+    };
+  }
+
+  Future<void> sendMessage() async {
+    _focusNode.requestFocus();
+
+    final AuthProvider auth = Get.find();
+    final prof = await auth.getProfile();
+    if (!await auth.isAuthorized) return;
+
+    final client = GetConnect(maxAuthRetries: 3);
+    client.httpClient.baseUrl = ServiceFinder.services['messaging'];
+    client.httpClient.addAuthenticator(auth.requestAuthenticator);
+
+    final payload = {
+      'uuid': const Uuid().v4(),
+      'type': 'm.text',
+      'content': encodeMessage(_textController.value.text),
+      'attachments': _attachments,
+      'reply_to': widget.reply?.id,
+    };
+
+    // The mock data
+    final sender = Sender(
+      id: 0,
+      createdAt: DateTime.now(),
+      updatedAt: DateTime.now(),
+      account: Account.fromJson(prof.body),
+      channelId: widget.channel.id,
+      accountId: prof.body['id'],
+      notify: 0,
+    );
+    final message = Message(
+      id: 0,
+      uuid: payload['uuid'] as String,
+      createdAt: DateTime.now(),
+      updatedAt: DateTime.now(),
+      content: payload['content'] as Map<String, dynamic>,
+      type: payload['type'] as String,
+      sender: sender,
+      replyId: widget.reply?.id,
+      replyTo: widget.reply,
+      channelId: widget.channel.id,
+      senderId: sender.id,
+    );
+
+    widget.onSent(message);
+    resetInput();
+
+    Response resp;
+    if (widget.edit != null) {
+      resp = await client.put(
+        '/api/channels/${widget.realm}/${widget.channel.alias}/messages/${widget.edit!.id}',
+        payload,
+      );
+    } else {
+      resp = await client.post(
+        '/api/channels/${widget.realm}/${widget.channel.alias}/messages',
+        payload,
+      );
+    }
+
+    if (resp.statusCode != 200) {
+      context.showErrorDialog(resp.bodyString);
+    }
+  }
+
+  void resetInput() {
+    _textController.clear();
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    const double height = 56;
+    const borderRadius = BorderRadius.all(Radius.circular(height / 2));
+
+    return Material(
+      borderRadius: borderRadius,
+      elevation: 2,
+      child: ClipRRect(
+        borderRadius: borderRadius,
+        child: SizedBox(
+          height: height,
+          child: Row(
+            mainAxisAlignment: MainAxisAlignment.start,
+            children: [
+              Expanded(
+                child: TextField(
+                  controller: _textController,
+                  focusNode: _focusNode,
+                  maxLines: null,
+                  autocorrect: true,
+                  keyboardType: TextInputType.text,
+                  decoration: InputDecoration.collapsed(
+                    hintText: 'messageInputPlaceholder'.trParams(
+                      {'channel': '#${widget.channel.alias}'},
+                    ),
+                  ),
+                  onSubmitted: (_) => sendMessage(),
+                  onTapOutside: (_) =>
+                      FocusManager.instance.primaryFocus?.unfocus(),
+                ),
+              ),
+              IconButton(
+                icon: const Icon(Icons.send),
+                color: Theme.of(context).colorScheme.primary,
+                onPressed: () => sendMessage(),
+              )
+            ],
+          ).paddingOnly(left: 16, right: 4),
+        ),
+      ),
+    );
+  }
+}

lib/widgets/posts/post_action.dart

@@ -154,7 +154,7 @@ class _PostDeletionDialogState extends State<PostDeletionDialog> {
     final AuthProvider auth = Get.find();
     if (!await auth.isAuthorized) return;
 
-    final client = GetConnect();
+    final client = GetConnect(maxAuthRetries: 3);
     client.httpClient.baseUrl = ServiceFinder.services['interactive'];
     client.httpClient.addAuthenticator(auth.requestAuthenticator);
 

lib/widgets/posts/post_item.dart

@@ -9,6 +9,7 @@ import 'package:solian/widgets/account/account_avatar.dart';
 import 'package:solian/widgets/attachments/attachment_list.dart';
 import 'package:solian/widgets/posts/post_quick_action.dart';
 import 'package:timeago/timeago.dart' show format;
+import 'package:url_launcher/url_launcher_string.dart';
 
 class PostItem extends StatefulWidget {
   final Post item;
@@ -132,6 +133,13 @@ class _PostItemState extends State<PostItem> {
             physics: const NeverScrollableScrollPhysics(),
             data: item.content,
             padding: const EdgeInsets.all(0),
+            onTapLink: (text, href, title) async {
+              if (href == null) return;
+              await launchUrlString(
+                href,
+                mode: LaunchMode.externalApplication,
+              );
+            },
           ).paddingOnly(
             left: 16,
             right: 12,

lib/widgets/posts/post_quick_action.dart

@@ -51,7 +51,7 @@ class _PostQuickActionState extends State<PostQuickAction> {
     if (_isSubmitting) return;
     if (!await auth.isAuthorized) return;
 
-    final client = GetConnect();
+    final client = GetConnect(maxAuthRetries: 3);
     client.httpClient.baseUrl = ServiceFinder.services['interactive'];
     client.httpClient.addAuthenticator(auth.requestAuthenticator);