✨ Link preview in posts

🐛 Fix link preview icon bugged when site icon is svg

assets/translations/en-US.json

@@ -444,5 +444,6 @@
   "postImageShareAds": "Explore posts on the Solar Network",
   "postShare": "Share",
   "postShareImage": "Share via Image",
-  "appInitializing": "Initializing"
+  "appInitializing": "Initializing",
+  "poweredBy": "Powered by {}"
 }

assets/translations/zh-CN.json

@@ -442,5 +442,6 @@
   "postImageShareAds": "来 Solar Network 探索更多有趣帖子",
   "postShare": "分享",
   "postShareImage": "分享帖图",
-  "appInitializing": "正在初始化"
+  "appInitializing": "正在初始化",
+  "poweredBy": "由 {} 提供支持"
 }

lib/main.dart

@@ -17,6 +17,7 @@ import 'package:styled_widget/styled_widget.dart';
 import 'package:surface/firebase_options.dart';
 import 'package:surface/providers/channel.dart';
 import 'package:surface/providers/chat_call.dart';
+import 'package:surface/providers/link_preview.dart';
 import 'package:surface/providers/navigation.dart';
 import 'package:surface/providers/notification.dart';
 import 'package:surface/providers/post.dart';
@@ -92,6 +93,7 @@ class SolianApp extends StatelessWidget {
             Provider(create: (ctx) => SnAttachmentProvider(ctx)),
             Provider(create: (ctx) => SnPostContentProvider(ctx)),
             Provider(create: (ctx) => SnRelationshipProvider(ctx)),
+            Provider(create: (ctx) => SnLinkPreviewProvider(ctx)),
             ChangeNotifierProvider(create: (ctx) => UserProvider(ctx)),
             ChangeNotifierProvider(create: (ctx) => WebSocketProvider(ctx)),
             ChangeNotifierProvider(create: (ctx) => NotificationProvider(ctx)),
@@ -111,7 +113,7 @@ class SolianApp extends StatelessWidget {
 }
 
 class _AppDelegate extends StatelessWidget {
-  const _AppDelegate({super.key});
+  const _AppDelegate();
 
   @override
   Widget build(BuildContext context) {
@@ -134,7 +136,10 @@ class _AppDelegate extends StatelessWidget {
       ],
       routerConfig: appRouter,
       builder: (context, child) {
-        return _AppSplashScreen(child: child!);
+        return _AppSplashScreen(
+          key: const Key('global-splash-screen'),
+          child: child!,
+        );
       },
     );
   }

lib/providers/link_preview.dart

@@ -0,0 +1,35 @@
+import 'dart:convert';
+import 'dart:developer';
+
+import 'package:flutter/material.dart';
+import 'package:provider/provider.dart';
+import 'package:surface/providers/sn_network.dart';
+import 'package:surface/types/link.dart';
+
+class SnLinkPreviewProvider {
+  late final SnNetworkProvider _sn;
+
+  final Map<String, SnLinkMeta> _cache = {};
+
+  SnLinkPreviewProvider(BuildContext context) {
+    _sn = context.read<SnNetworkProvider>();
+  }
+
+  Future<SnLinkMeta?> getLinkMeta(String url) async {
+    final b64 = utf8.fuse(base64Url);
+    final target = b64.encode(url);
+    if (_cache.containsKey(target)) return _cache[target];
+
+    log('[LinkPreview] Fetching $url ($target)');
+
+    try {
+      final resp = await _sn.client.get('/cgi/re/link/$target');
+      final meta = SnLinkMeta.fromJson(resp.data);
+      _cache[url] = meta;
+      return meta;
+    } catch (err) {
+      log('[LinkPreview] Failed to fetch $url ($target)...');
+      return null;
+    }
+  }
+}

lib/providers/websocket.dart

@@ -26,6 +26,7 @@ class WebSocketProvider extends ChangeNotifier {
   }
 
   Future<void> tryConnect() async {
+    if (isConnected) return;
     if (!_ua.isAuthorized) return;
 
     log('[WebSocket] Connecting to the server...');
@@ -76,6 +77,7 @@ class WebSocketProvider extends ChangeNotifier {
     if (conn != null) {
       conn!.sink.close();
     }
+    conn = null;
     isConnected = false;
     notifyListeners();
   }

lib/types/link.dart

@@ -0,0 +1,28 @@
+import 'package:freezed_annotation/freezed_annotation.dart';
+
+part 'link.g.dart';
+part 'link.freezed.dart';
+
+@freezed
+class SnLinkMeta with _$SnLinkMeta {
+  const SnLinkMeta._();
+
+  const factory SnLinkMeta({
+    required int id,
+    required DateTime createdAt,
+    required DateTime updatedAt,
+    required DateTime? deletedAt,
+    required String entryId,
+    required String? icon,
+    required String url,
+    required String? title,
+    required String? image,
+    required String? video,
+    required String? audio,
+    required String? description,
+    required String? siteName,
+    required String? type,
+  }) = _SnLinkMeta;
+
+  factory SnLinkMeta.fromJson(Map<String, dynamic> json) => _$SnLinkMetaFromJson(json);
+}

lib/types/link.freezed.dart

@@ -0,0 +1,450 @@
+// coverage:ignore-file
+// GENERATED CODE - DO NOT MODIFY BY HAND
+// ignore_for_file: type=lint
+// ignore_for_file: unused_element, deprecated_member_use, deprecated_member_use_from_same_package, use_function_type_syntax_for_parameters, unnecessary_const, avoid_init_to_null, invalid_override_different_default_values_named, prefer_expression_function_bodies, annotate_overrides, invalid_annotation_target, unnecessary_question_mark
+
+part of 'link.dart';
+
+// **************************************************************************
+// FreezedGenerator
+// **************************************************************************
+
+T _$identity<T>(T value) => value;
+
+final _privateConstructorUsedError = UnsupportedError(
+    'It seems like you constructed your class using `MyClass._()`. This constructor is only meant to be used by freezed and you are not supposed to need it nor use it.\nPlease check the documentation here for more information: https://github.com/rrousselGit/freezed#adding-getters-and-methods-to-our-models');
+
+SnLinkMeta _$SnLinkMetaFromJson(Map<String, dynamic> json) {
+  return _SnLinkMeta.fromJson(json);
+}
+
+/// @nodoc
+mixin _$SnLinkMeta {
+  int get id => throw _privateConstructorUsedError;
+  DateTime get createdAt => throw _privateConstructorUsedError;
+  DateTime get updatedAt => throw _privateConstructorUsedError;
+  DateTime? get deletedAt => throw _privateConstructorUsedError;
+  String get entryId => throw _privateConstructorUsedError;
+  String? get icon => throw _privateConstructorUsedError;
+  String get url => throw _privateConstructorUsedError;
+  String? get title => throw _privateConstructorUsedError;
+  String? get image => throw _privateConstructorUsedError;
+  String? get video => throw _privateConstructorUsedError;
+  String? get audio => throw _privateConstructorUsedError;
+  String? get description => throw _privateConstructorUsedError;
+  String? get siteName => throw _privateConstructorUsedError;
+  String? get type => throw _privateConstructorUsedError;
+
+  /// Serializes this SnLinkMeta to a JSON map.
+  Map<String, dynamic> toJson() => throw _privateConstructorUsedError;
+
+  /// Create a copy of SnLinkMeta
+  /// with the given fields replaced by the non-null parameter values.
+  @JsonKey(includeFromJson: false, includeToJson: false)
+  $SnLinkMetaCopyWith<SnLinkMeta> get copyWith =>
+      throw _privateConstructorUsedError;
+}
+
+/// @nodoc
+abstract class $SnLinkMetaCopyWith<$Res> {
+  factory $SnLinkMetaCopyWith(
+          SnLinkMeta value, $Res Function(SnLinkMeta) then) =
+      _$SnLinkMetaCopyWithImpl<$Res, SnLinkMeta>;
+  @useResult
+  $Res call(
+      {int id,
+      DateTime createdAt,
+      DateTime updatedAt,
+      DateTime? deletedAt,
+      String entryId,
+      String? icon,
+      String url,
+      String? title,
+      String? image,
+      String? video,
+      String? audio,
+      String? description,
+      String? siteName,
+      String? type});
+}
+
+/// @nodoc
+class _$SnLinkMetaCopyWithImpl<$Res, $Val extends SnLinkMeta>
+    implements $SnLinkMetaCopyWith<$Res> {
+  _$SnLinkMetaCopyWithImpl(this._value, this._then);
+
+  // ignore: unused_field
+  final $Val _value;
+  // ignore: unused_field
+  final $Res Function($Val) _then;
+
+  /// Create a copy of SnLinkMeta
+  /// with the given fields replaced by the non-null parameter values.
+  @pragma('vm:prefer-inline')
+  @override
+  $Res call({
+    Object? id = null,
+    Object? createdAt = null,
+    Object? updatedAt = null,
+    Object? deletedAt = freezed,
+    Object? entryId = null,
+    Object? icon = freezed,
+    Object? url = null,
+    Object? title = freezed,
+    Object? image = freezed,
+    Object? video = freezed,
+    Object? audio = freezed,
+    Object? description = freezed,
+    Object? siteName = freezed,
+    Object? type = freezed,
+  }) {
+    return _then(_value.copyWith(
+      id: null == id
+          ? _value.id
+          : id // ignore: cast_nullable_to_non_nullable
+              as int,
+      createdAt: null == createdAt
+          ? _value.createdAt
+          : createdAt // ignore: cast_nullable_to_non_nullable
+              as DateTime,
+      updatedAt: null == updatedAt
+          ? _value.updatedAt
+          : updatedAt // ignore: cast_nullable_to_non_nullable
+              as DateTime,
+      deletedAt: freezed == deletedAt
+          ? _value.deletedAt
+          : deletedAt // ignore: cast_nullable_to_non_nullable
+              as DateTime?,
+      entryId: null == entryId
+          ? _value.entryId
+          : entryId // ignore: cast_nullable_to_non_nullable
+              as String,
+      icon: freezed == icon
+          ? _value.icon
+          : icon // ignore: cast_nullable_to_non_nullable
+              as String?,
+      url: null == url
+          ? _value.url
+          : url // ignore: cast_nullable_to_non_nullable
+              as String,
+      title: freezed == title
+          ? _value.title
+          : title // ignore: cast_nullable_to_non_nullable
+              as String?,
+      image: freezed == image
+          ? _value.image
+          : image // ignore: cast_nullable_to_non_nullable
+              as String?,
+      video: freezed == video
+          ? _value.video
+          : video // ignore: cast_nullable_to_non_nullable
+              as String?,
+      audio: freezed == audio
+          ? _value.audio
+          : audio // ignore: cast_nullable_to_non_nullable
+              as String?,
+      description: freezed == description
+          ? _value.description
+          : description // ignore: cast_nullable_to_non_nullable
+              as String?,
+      siteName: freezed == siteName
+          ? _value.siteName
+          : siteName // ignore: cast_nullable_to_non_nullable
+              as String?,
+      type: freezed == type
+          ? _value.type
+          : type // ignore: cast_nullable_to_non_nullable
+              as String?,
+    ) as $Val);
+  }
+}
+
+/// @nodoc
+abstract class _$$SnLinkMetaImplCopyWith<$Res>
+    implements $SnLinkMetaCopyWith<$Res> {
+  factory _$$SnLinkMetaImplCopyWith(
+          _$SnLinkMetaImpl value, $Res Function(_$SnLinkMetaImpl) then) =
+      __$$SnLinkMetaImplCopyWithImpl<$Res>;
+  @override
+  @useResult
+  $Res call(
+      {int id,
+      DateTime createdAt,
+      DateTime updatedAt,
+      DateTime? deletedAt,
+      String entryId,
+      String? icon,
+      String url,
+      String? title,
+      String? image,
+      String? video,
+      String? audio,
+      String? description,
+      String? siteName,
+      String? type});
+}
+
+/// @nodoc
+class __$$SnLinkMetaImplCopyWithImpl<$Res>
+    extends _$SnLinkMetaCopyWithImpl<$Res, _$SnLinkMetaImpl>
+    implements _$$SnLinkMetaImplCopyWith<$Res> {
+  __$$SnLinkMetaImplCopyWithImpl(
+      _$SnLinkMetaImpl _value, $Res Function(_$SnLinkMetaImpl) _then)
+      : super(_value, _then);
+
+  /// Create a copy of SnLinkMeta
+  /// with the given fields replaced by the non-null parameter values.
+  @pragma('vm:prefer-inline')
+  @override
+  $Res call({
+    Object? id = null,
+    Object? createdAt = null,
+    Object? updatedAt = null,
+    Object? deletedAt = freezed,
+    Object? entryId = null,
+    Object? icon = freezed,
+    Object? url = null,
+    Object? title = freezed,
+    Object? image = freezed,
+    Object? video = freezed,
+    Object? audio = freezed,
+    Object? description = freezed,
+    Object? siteName = freezed,
+    Object? type = freezed,
+  }) {
+    return _then(_$SnLinkMetaImpl(
+      id: null == id
+          ? _value.id
+          : id // ignore: cast_nullable_to_non_nullable
+              as int,
+      createdAt: null == createdAt
+          ? _value.createdAt
+          : createdAt // ignore: cast_nullable_to_non_nullable
+              as DateTime,
+      updatedAt: null == updatedAt
+          ? _value.updatedAt
+          : updatedAt // ignore: cast_nullable_to_non_nullable
+              as DateTime,
+      deletedAt: freezed == deletedAt
+          ? _value.deletedAt
+          : deletedAt // ignore: cast_nullable_to_non_nullable
+              as DateTime?,
+      entryId: null == entryId
+          ? _value.entryId
+          : entryId // ignore: cast_nullable_to_non_nullable
+              as String,
+      icon: freezed == icon
+          ? _value.icon
+          : icon // ignore: cast_nullable_to_non_nullable
+              as String?,
+      url: null == url
+          ? _value.url
+          : url // ignore: cast_nullable_to_non_nullable
+              as String,
+      title: freezed == title
+          ? _value.title
+          : title // ignore: cast_nullable_to_non_nullable
+              as String?,
+      image: freezed == image
+          ? _value.image
+          : image // ignore: cast_nullable_to_non_nullable
+              as String?,
+      video: freezed == video
+          ? _value.video
+          : video // ignore: cast_nullable_to_non_nullable
+              as String?,
+      audio: freezed == audio
+          ? _value.audio
+          : audio // ignore: cast_nullable_to_non_nullable
+              as String?,
+      description: freezed == description
+          ? _value.description
+          : description // ignore: cast_nullable_to_non_nullable
+              as String?,
+      siteName: freezed == siteName
+          ? _value.siteName
+          : siteName // ignore: cast_nullable_to_non_nullable
+              as String?,
+      type: freezed == type
+          ? _value.type
+          : type // ignore: cast_nullable_to_non_nullable
+              as String?,
+    ));
+  }
+}
+
+/// @nodoc
+@JsonSerializable()
+class _$SnLinkMetaImpl extends _SnLinkMeta {
+  const _$SnLinkMetaImpl(
+      {required this.id,
+      required this.createdAt,
+      required this.updatedAt,
+      required this.deletedAt,
+      required this.entryId,
+      required this.icon,
+      required this.url,
+      required this.title,
+      required this.image,
+      required this.video,
+      required this.audio,
+      required this.description,
+      required this.siteName,
+      required this.type})
+      : super._();
+
+  factory _$SnLinkMetaImpl.fromJson(Map<String, dynamic> json) =>
+      _$$SnLinkMetaImplFromJson(json);
+
+  @override
+  final int id;
+  @override
+  final DateTime createdAt;
+  @override
+  final DateTime updatedAt;
+  @override
+  final DateTime? deletedAt;
+  @override
+  final String entryId;
+  @override
+  final String? icon;
+  @override
+  final String url;
+  @override
+  final String? title;
+  @override
+  final String? image;
+  @override
+  final String? video;
+  @override
+  final String? audio;
+  @override
+  final String? description;
+  @override
+  final String? siteName;
+  @override
+  final String? type;
+
+  @override
+  String toString() {
+    return 'SnLinkMeta(id: $id, createdAt: $createdAt, updatedAt: $updatedAt, deletedAt: $deletedAt, entryId: $entryId, icon: $icon, url: $url, title: $title, image: $image, video: $video, audio: $audio, description: $description, siteName: $siteName, type: $type)';
+  }
+
+  @override
+  bool operator ==(Object other) {
+    return identical(this, other) ||
+        (other.runtimeType == runtimeType &&
+            other is _$SnLinkMetaImpl &&
+            (identical(other.id, id) || other.id == id) &&
+            (identical(other.createdAt, createdAt) ||
+                other.createdAt == createdAt) &&
+            (identical(other.updatedAt, updatedAt) ||
+                other.updatedAt == updatedAt) &&
+            (identical(other.deletedAt, deletedAt) ||
+                other.deletedAt == deletedAt) &&
+            (identical(other.entryId, entryId) || other.entryId == entryId) &&
+            (identical(other.icon, icon) || other.icon == icon) &&
+            (identical(other.url, url) || other.url == url) &&
+            (identical(other.title, title) || other.title == title) &&
+            (identical(other.image, image) || other.image == image) &&
+            (identical(other.video, video) || other.video == video) &&
+            (identical(other.audio, audio) || other.audio == audio) &&
+            (identical(other.description, description) ||
+                other.description == description) &&
+            (identical(other.siteName, siteName) ||
+                other.siteName == siteName) &&
+            (identical(other.type, type) || other.type == type));
+  }
+
+  @JsonKey(includeFromJson: false, includeToJson: false)
+  @override
+  int get hashCode => Object.hash(
+      runtimeType,
+      id,
+      createdAt,
+      updatedAt,
+      deletedAt,
+      entryId,
+      icon,
+      url,
+      title,
+      image,
+      video,
+      audio,
+      description,
+      siteName,
+      type);
+
+  /// Create a copy of SnLinkMeta
+  /// with the given fields replaced by the non-null parameter values.
+  @JsonKey(includeFromJson: false, includeToJson: false)
+  @override
+  @pragma('vm:prefer-inline')
+  _$$SnLinkMetaImplCopyWith<_$SnLinkMetaImpl> get copyWith =>
+      __$$SnLinkMetaImplCopyWithImpl<_$SnLinkMetaImpl>(this, _$identity);
+
+  @override
+  Map<String, dynamic> toJson() {
+    return _$$SnLinkMetaImplToJson(
+      this,
+    );
+  }
+}
+
+abstract class _SnLinkMeta extends SnLinkMeta {
+  const factory _SnLinkMeta(
+      {required final int id,
+      required final DateTime createdAt,
+      required final DateTime updatedAt,
+      required final DateTime? deletedAt,
+      required final String entryId,
+      required final String? icon,
+      required final String url,
+      required final String? title,
+      required final String? image,
+      required final String? video,
+      required final String? audio,
+      required final String? description,
+      required final String? siteName,
+      required final String? type}) = _$SnLinkMetaImpl;
+  const _SnLinkMeta._() : super._();
+
+  factory _SnLinkMeta.fromJson(Map<String, dynamic> json) =
+      _$SnLinkMetaImpl.fromJson;
+
+  @override
+  int get id;
+  @override
+  DateTime get createdAt;
+  @override
+  DateTime get updatedAt;
+  @override
+  DateTime? get deletedAt;
+  @override
+  String get entryId;
+  @override
+  String? get icon;
+  @override
+  String get url;
+  @override
+  String? get title;
+  @override
+  String? get image;
+  @override
+  String? get video;
+  @override
+  String? get audio;
+  @override
+  String? get description;
+  @override
+  String? get siteName;
+  @override
+  String? get type;
+
+  /// Create a copy of SnLinkMeta
+  /// with the given fields replaced by the non-null parameter values.
+  @override
+  @JsonKey(includeFromJson: false, includeToJson: false)
+  _$$SnLinkMetaImplCopyWith<_$SnLinkMetaImpl> get copyWith =>
+      throw _privateConstructorUsedError;
+}

lib/types/link.g.dart

@@ -0,0 +1,45 @@
+// GENERATED CODE - DO NOT MODIFY BY HAND
+
+part of 'link.dart';
+
+// **************************************************************************
+// JsonSerializableGenerator
+// **************************************************************************
+
+_$SnLinkMetaImpl _$$SnLinkMetaImplFromJson(Map<String, dynamic> json) =>
+    _$SnLinkMetaImpl(
+      id: (json['id'] as num).toInt(),
+      createdAt: DateTime.parse(json['created_at'] as String),
+      updatedAt: DateTime.parse(json['updated_at'] as String),
+      deletedAt: json['deleted_at'] == null
+          ? null
+          : DateTime.parse(json['deleted_at'] as String),
+      entryId: json['entry_id'] as String,
+      icon: json['icon'] as String?,
+      url: json['url'] as String,
+      title: json['title'] as String?,
+      image: json['image'] as String?,
+      video: json['video'] as String?,
+      audio: json['audio'] as String?,
+      description: json['description'] as String?,
+      siteName: json['site_name'] as String?,
+      type: json['type'] as String?,
+    );
+
+Map<String, dynamic> _$$SnLinkMetaImplToJson(_$SnLinkMetaImpl instance) =>
+    <String, dynamic>{
+      'id': instance.id,
+      'created_at': instance.createdAt.toIso8601String(),
+      'updated_at': instance.updatedAt.toIso8601String(),
+      'deleted_at': instance.deletedAt?.toIso8601String(),
+      'entry_id': instance.entryId,
+      'icon': instance.icon,
+      'url': instance.url,
+      'title': instance.title,
+      'image': instance.image,
+      'video': instance.video,
+      'audio': instance.audio,
+      'description': instance.description,
+      'site_name': instance.siteName,
+      'type': instance.type,
+    };

lib/widgets/chat/chat_message.dart

@@ -10,6 +10,7 @@ import 'package:surface/providers/userinfo.dart';
 import 'package:surface/types/chat.dart';
 import 'package:surface/widgets/account/account_image.dart';
 import 'package:surface/widgets/attachment/attachment_list.dart';
+import 'package:surface/widgets/link_preview.dart';
 import 'package:surface/widgets/markdown_content.dart';
 import 'package:swipe_to/swipe_to.dart';
 
@@ -22,6 +23,7 @@ class ChatMessage extends StatelessWidget {
   final Function(SnChatMessage)? onReply;
   final Function(SnChatMessage)? onEdit;
   final Function(SnChatMessage)? onDelete;
+
   const ChatMessage({
     super.key,
     required this.data,
@@ -63,7 +65,7 @@ class ChatMessage extends StatelessWidget {
                   onReply!(data);
                 },
               ),
-            if (isOwner && onEdit != null)
+            if (isOwner && data.type == 'messages.new' && onEdit != null)
               MenuItem(
                 label: 'edit'.tr(),
                 icon: Symbols.edit,
@@ -71,7 +73,7 @@ class ChatMessage extends StatelessWidget {
                   onEdit!(data);
                 },
               ),
-            if (isOwner && onDelete != null)
+            if (isOwner && data.type == 'messages.new' && onDelete != null)
               MenuItem(
                 label: 'delete'.tr(),
                 icon: Symbols.delete,
@@ -109,9 +111,7 @@ class ChatMessage extends StatelessWidget {
                                 radius: 12,
                               ).padding(right: 6),
                             Text(
-                              (data.sender.nick?.isNotEmpty ?? false)
-                                  ? data.sender.nick!
-                                  : user?.nick ?? 'unknown',
+                              (data.sender.nick?.isNotEmpty ?? false) ? data.sender.nick! : user?.nick ?? 'unknown',
                             ).bold(),
                             const Gap(6),
                             Text(
@@ -123,8 +123,7 @@ class ChatMessage extends StatelessWidget {
                       if (data.preload?.quoteEvent != null)
                         StyledWidget(Container(
                           decoration: BoxDecoration(
-                            borderRadius:
-                                const BorderRadius.all(Radius.circular(8)),
+                            borderRadius: const BorderRadius.all(Radius.circular(8)),
                             border: Border.all(
                               color: Theme.of(context).dividerColor,
                               width: 1,
@@ -153,6 +152,8 @@ class ChatMessage extends StatelessWidget {
                 )
               ],
             ).opacity(isPending ? 0.5 : 1),
+            if (data.body['text'] != null && (data.body['text']?.isNotEmpty ?? false))
+              LinkPreviewWidget(text: data.body['text']!),
             if (data.preload?.attachments?.isNotEmpty ?? false)
               AttachmentList(
                 data: data.preload!.attachments!,
@@ -161,10 +162,7 @@ class ChatMessage extends StatelessWidget {
                 maxHeight: 520,
                 listPadding: const EdgeInsets.only(top: 8),
               ),
-            if (!hasMerged && !isCompact)
-              const Gap(12)
-            else if (!isCompact)
-              const Gap(6),
+            if (!hasMerged && !isCompact) const Gap(12) else if (!isCompact) const Gap(6),
           ],
         ),
       ),
@@ -174,6 +172,7 @@ class ChatMessage extends StatelessWidget {
 
 class _ChatMessageText extends StatelessWidget {
   final SnChatMessage data;
+
   const _ChatMessageText({super.key, required this.data});
 
   @override
@@ -184,6 +183,7 @@ class _ChatMessageText extends StatelessWidget {
         children: [
           MarkdownTextContent(
             content: data.body['text'],
+            isSelectable: true,
             isAutoWarp: true,
           ),
           if (data.updatedAt != data.createdAt)
@@ -212,6 +212,7 @@ class _ChatMessageText extends StatelessWidget {
 
 class _ChatMessageSystemNotify extends StatelessWidget {
   final SnChatMessage data;
+
   const _ChatMessageSystemNotify({super.key, required this.data});
 
   String _formatDuration(Duration duration) {

lib/widgets/link_preview.dart

@@ -0,0 +1,170 @@
+import 'package:easy_localization/easy_localization.dart';
+import 'package:flutter/material.dart';
+import 'package:flutter_svg/flutter_svg.dart';
+import 'package:gap/gap.dart';
+import 'package:google_fonts/google_fonts.dart';
+import 'package:marquee/marquee.dart';
+import 'package:provider/provider.dart';
+import 'package:responsive_framework/responsive_framework.dart';
+import 'package:styled_widget/styled_widget.dart';
+import 'package:surface/types/link.dart';
+import 'package:surface/widgets/universal_image.dart';
+import 'package:url_launcher/url_launcher_string.dart';
+
+import '../providers/link_preview.dart';
+
+class LinkPreviewWidget extends StatefulWidget {
+  final String text;
+
+  const LinkPreviewWidget({super.key, required this.text});
+
+  @override
+  State<LinkPreviewWidget> createState() => _LinkPreviewWidgetState();
+}
+
+class _LinkPreviewWidgetState extends State<LinkPreviewWidget> {
+  final List<SnLinkMeta> _links = List.empty(growable: true);
+
+  Future<void> _getLinkMeta() async {
+    final linkRegex = RegExp(r'https?:\/\/[^\s/$.?#].[^\s]*');
+    final links = linkRegex.allMatches(widget.text).map((e) => e.group(0)).toSet();
+
+    final lp = context.read<SnLinkPreviewProvider>();
+
+    final List<Future<SnLinkMeta?>> futures = links.where((e) => e != null).map((e) => lp.getLinkMeta(e!)).toList();
+    final results = await Future.wait(futures);
+
+    _links.addAll(results.where((e) => e != null).map((e) => e!).toList());
+    if (_links.isNotEmpty && mounted) setState(() {});
+  }
+
+  @override
+  void initState() {
+    super.initState();
+    _getLinkMeta();
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    if (_links.isEmpty) return const SizedBox.shrink();
+
+    return Wrap(
+      spacing: 8,
+      runSpacing: 8,
+      children: _links.map((e) => _LinkPreviewEntry(meta: e)).toList(),
+    );
+  }
+}
+
+class _LinkPreviewEntry extends StatelessWidget {
+  final SnLinkMeta meta;
+
+  const _LinkPreviewEntry({
+    super.key,
+    required this.meta,
+  });
+
+  @override
+  Widget build(BuildContext context) {
+    return Container(
+      constraints: BoxConstraints(
+        maxWidth: ResponsiveBreakpoints.of(context).smallerOrEqualTo(MOBILE) ? double.infinity : 480,
+      ),
+      child: GestureDetector(
+        child: Card(
+          child: Column(
+            crossAxisAlignment: CrossAxisAlignment.start,
+            children: [
+              if (meta.image != null)
+                Container(
+                  margin: const EdgeInsets.only(bottom: 4),
+                  color: Theme.of(context).colorScheme.surfaceContainer,
+                  child: AspectRatio(
+                    aspectRatio: 16 / 9,
+                    child: ClipRRect(
+                      child: AutoResizeUniversalImage(
+                        meta.image!,
+                        fit: BoxFit.contain,
+                      ),
+                    ),
+                  ),
+                ),
+              SizedBox(
+                height: 48,
+                child: Row(
+                  crossAxisAlignment: CrossAxisAlignment.center,
+                  children: [
+                    if (meta.icon?.isNotEmpty ?? false)
+                      StyledWidget(
+                        meta.icon!.endsWith('.svg')
+                            ? SvgPicture.network(meta.icon!)
+                            : UniversalImage(
+                                meta.icon!,
+                                width: 36,
+                                height: 36,
+                                cacheHeight: 36,
+                                cacheWidth: 36,
+                              ),
+                      ).padding(all: 4, right: 16),
+                    Expanded(
+                      child: Column(
+                        crossAxisAlignment: CrossAxisAlignment.start,
+                        mainAxisAlignment: MainAxisAlignment.center,
+                        children: [
+                          SizedBox(
+                            height: 24,
+                            child: ((meta.title?.length ?? 0) > 40)
+                                ? Marquee(
+                                    text: meta.title ?? 'unknown'.tr(),
+                                    style: TextStyle(fontSize: 17, height: 1),
+                                    scrollAxis: Axis.horizontal,
+                                    showFadingOnlyWhenScrolling: true,
+                                    pauseAfterRound: const Duration(seconds: 3),
+                                  )
+                                : Text(
+                                    meta.title ?? 'unknown'.tr(),
+                                    style: TextStyle(fontSize: 17, height: 1),
+                                    maxLines: 1,
+                                    overflow: TextOverflow.ellipsis,
+                                  ),
+                          ),
+                          if (meta.siteName != null)
+                            Text(
+                              meta.siteName!,
+                              style: TextStyle(fontSize: 13, height: 0.9),
+                            ).fontSize(11),
+                        ],
+                      ),
+                    ),
+                    const Gap(6),
+                  ],
+                ).padding(horizontal: 16),
+              ),
+              if (meta.description != null)
+                Text(
+                  meta.description!,
+                  maxLines: 3,
+                  overflow: TextOverflow.ellipsis,
+                ).padding(horizontal: 16, bottom: 8),
+              Text(
+                meta.url,
+                style: GoogleFonts.roboto(fontSize: 11, height: 0.9),
+                maxLines: 1,
+                overflow: TextOverflow.ellipsis,
+              ).opacity(0.75).padding(horizontal: 16),
+              const Gap(4),
+              Text(
+                'poweredBy'.tr(args: ['HyperNet.Reader']),
+                style: GoogleFonts.roboto(fontSize: 11, height: 0.9),
+              ).opacity(0.75).padding(horizontal: 16),
+              const Gap(16),
+            ],
+          ),
+        ),
+        onTap: () {
+          launchUrlString(meta.url, mode: LaunchMode.externalApplication);
+        },
+      ),
+    );
+  }
+}

lib/widgets/post/post_item.dart

@@ -24,6 +24,7 @@ import 'package:surface/types/reaction.dart';
 import 'package:surface/widgets/account/account_image.dart';
 import 'package:surface/widgets/attachment/attachment_list.dart';
 import 'package:surface/widgets/dialog.dart';
+import 'package:surface/widgets/link_preview.dart';
 import 'package:surface/widgets/markdown_content.dart';
 import 'package:gap/gap.dart';
 import 'package:surface/widgets/post/post_comment_list.dart';
@@ -103,7 +104,7 @@ class PostItem extends StatelessWidget {
     ).create();
     await imageFile.writeAsBytes(capturedImage);
 
-    if(!kIsWeb && (Platform.isAndroid || Platform.isIOS)) {
+    if (!kIsWeb && (Platform.isAndroid || Platform.isIOS)) {
       await Share.shareXFiles(
         [XFile(imageFile.path)],
         sharePositionOrigin: box!.localToGlobal(Offset.zero) & box.size,
@@ -132,6 +133,7 @@ class PostItem extends StatelessWidget {
             _PostContentHeader(
               data: data,
               isAuthor: isAuthor,
+              isRelativeDate: !showFullPost,
               onShare: () => _doShare(context),
               onShareImage: () => _doShareViaPicture(context),
               onDeleted: () {
@@ -204,6 +206,7 @@ class PostItem extends StatelessWidget {
             children: [
               _PostContentHeader(
                 isAuthor: isAuthor,
+                isRelativeDate: !showFullPost,
                 data: data,
                 showMenu: showMenu,
                 onShare: () => _doShare(context),
@@ -217,8 +220,10 @@ class PostItem extends StatelessWidget {
                   data: data,
                   isEnlarge: data.type == 'article' && showFullPost,
                 ).padding(horizontal: 16, bottom: 8),
+              if (data.body['content']?.isNotEmpty ?? false)
                 _PostContentBody(
                   data: data,
+                  isSelectable: showFullPost,
                   isEnlarge: data.type == 'article' && showFullPost,
                 ).padding(horizontal: 16, bottom: 6),
               if (data.repostTo != null)
@@ -247,6 +252,10 @@ class PostItem extends StatelessWidget {
             maxHeight: 560,
             listPadding: const EdgeInsets.symmetric(horizontal: 12),
           ),
+        if (data.body['content'] != null)
+          LinkPreviewWidget(
+            text: data.body['content'],
+          ).padding(horizontal: 4),
         Container(
           constraints: BoxConstraints(maxWidth: maxWidth ?? double.infinity),
           child: Column(
@@ -312,6 +321,7 @@ class PostShareImageWidget extends StatelessWidget {
             data: data,
             isEnlarge: data.type == 'article',
           ).padding(horizontal: 16, bottom: 8),
+          if (data.body['content']?.isNotEmpty ?? false)
             _PostContentBody(
               data: data,
               isEnlarge: data.type == 'article',
@@ -327,6 +337,10 @@ class PostShareImageWidget extends StatelessWidget {
               data: data.preload!.attachments!,
               isFlatted: true,
             ).padding(horizontal: 16, bottom: 8),
+          if (data.body['content'] != null)
+            LinkPreviewWidget(
+              text: data.body['content'],
+            ).padding(horizontal: 4),
           Column(
             crossAxisAlignment: CrossAxisAlignment.start,
             children: [
@@ -372,7 +386,7 @@ class PostShareImageWidget extends StatelessWidget {
                           ],
                         ),
                       ),
-                      if(data.body['content_truncated'] == true)
+                      if (data.body['content_truncated'] == true)
                         Text(
                           'postImageShareReadMore'.tr(),
                           style: GoogleFonts.robotoMono(fontSize: 11),
@@ -850,16 +864,19 @@ class _PostContentHeader extends StatelessWidget {
 class _PostContentBody extends StatelessWidget {
   final SnPost data;
   final bool isEnlarge;
+  final bool isSelectable;
 
   const _PostContentBody({
     required this.data,
     this.isEnlarge = false,
+    this.isSelectable = false,
   });
 
   @override
   Widget build(BuildContext context) {
     if (data.body['content'] == null) return const SizedBox.shrink();
     return MarkdownTextContent(
+      isSelectable: isSelectable,
       textScaler: isEnlarge ? TextScaler.linear(1.1) : null,
       content: data.body['content'],
       attachments: data.preload?.attachments,

pubspec.lock

@@ -454,6 +454,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "2.0.7"
+  fading_edge_scrollview:
+    dependency: transitive
+    description:
+      name: fading_edge_scrollview
+      sha256: "1f84fe3ea8e251d00d5735e27502a6a250e4aa3d3b330d3fdcb475af741464ef"
+      url: "https://pub.dev"
+    source: hosted
+    version: "4.1.1"
   fake_async:
     dependency: transitive
     description:
@@ -704,6 +712,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "0.7.0"
+  flutter_svg:
+    dependency: "direct main"
+    description:
+      name: flutter_svg
+      sha256: "54900a1a1243f3c4a5506d853a2b5c2dbc38d5f27e52a52618a8054401431123"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.0.16"
   flutter_test:
     dependency: "direct dev"
     description: flutter
@@ -1050,6 +1066,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "7.2.2"
+  marquee:
+    dependency: "direct main"
+    description:
+      name: marquee
+      sha256: a87e7e80c5d21434f90ad92add9f820cf68be374b226404fe881d2bba7be0862
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.3.0"
   matcher:
     dependency: transitive
     description:
@@ -1226,6 +1250,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "1.9.0"
+  path_parsing:
+    dependency: transitive
+    description:
+      name: path_parsing
+      sha256: "883402936929eac138ee0a45da5b0f2c80f89913e6dc3bf77eb65b84b409c6ca"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.1.0"
   path_provider:
     dependency: "direct main"
     description:
@@ -1895,6 +1927,30 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "4.5.1"
+  vector_graphics:
+    dependency: transitive
+    description:
+      name: vector_graphics
+      sha256: "27d5fefe86fb9aace4a9f8375b56b3c292b64d8c04510df230f849850d912cb7"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.1.15"
+  vector_graphics_codec:
+    dependency: transitive
+    description:
+      name: vector_graphics_codec
+      sha256: "2430b973a4ca3c4dbc9999b62b8c719a160100dcbae5c819bae0cacce32c9cdb"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.1.12"
+  vector_graphics_compiler:
+    dependency: transitive
+    description:
+      name: vector_graphics_compiler
+      sha256: "1b4b9e706a10294258727674a340ae0d6e64a7231980f9f9a3d12e4b42407aad"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.1.16"
   vector_math:
     dependency: transitive
     description:

pubspec.yaml

@@ -16,7 +16,7 @@ publish_to: "none" # Remove this line if you wish to publish to pub.dev
 # https://developer.apple.com/library/archive/documentation/General/Reference/InfoPlistKeyReference/Articles/CoreFoundationKeys.html
 # In Windows, build-name is used as the major, minor, and patch parts
 # of the product and file versions while build-number is used as the build suffix.
-version: 2.0.1+24
+version: 2.0.1+25
 
 environment:
   sdk: ^3.5.4
@@ -102,6 +102,8 @@ dependencies:
   qr_flutter: ^4.1.0
   file_saver: ^0.2.14
   device_info_plus: ^11.2.0
+  marquee: ^2.3.0
+  flutter_svg: ^2.0.16
 
 dev_dependencies:
   flutter_test: