✨ Think based the post

lib/models/thought.dart

@@ -44,6 +44,8 @@ sealed class StreamThinkingRequest with _$StreamThinkingRequest {
     required String userMessage,
     String? sequenceId,
     @Default([]) List<String> accpetProposals,
+    List<String>? attachedPosts,
+    List<Map<String, dynamic>>? attachedMessages,
   }) = _StreamThinkingRequest;
 
   factory StreamThinkingRequest.fromJson(Map<String, dynamic> json) =>

lib/models/thought.freezed.dart

@@ -15,7 +15,7 @@ T _$identity<T>(T value) => value;
 /// @nodoc
 mixin _$StreamThinkingRequest {
 
- String get userMessage; String? get sequenceId; List<String> get accpetProposals;
+ String get userMessage; String? get sequenceId; List<String> get accpetProposals; List<String>? get attachedPosts; List<Map<String, dynamic>>? get attachedMessages;
 /// Create a copy of StreamThinkingRequest
 /// with the given fields replaced by the non-null parameter values.
 @JsonKey(includeFromJson: false, includeToJson: false)
@@ -28,16 +28,16 @@ $StreamThinkingRequestCopyWith<StreamThinkingRequest> get copyWith => _$StreamTh
 
 @override
 bool operator ==(Object other) {
-  return identical(this, other) || (other.runtimeType == runtimeType&&other is StreamThinkingRequest&&(identical(other.userMessage, userMessage) || other.userMessage == userMessage)&&(identical(other.sequenceId, sequenceId) || other.sequenceId == sequenceId)&&const DeepCollectionEquality().equals(other.accpetProposals, accpetProposals));
+  return identical(this, other) || (other.runtimeType == runtimeType&&other is StreamThinkingRequest&&(identical(other.userMessage, userMessage) || other.userMessage == userMessage)&&(identical(other.sequenceId, sequenceId) || other.sequenceId == sequenceId)&&const DeepCollectionEquality().equals(other.accpetProposals, accpetProposals)&&const DeepCollectionEquality().equals(other.attachedPosts, attachedPosts)&&const DeepCollectionEquality().equals(other.attachedMessages, attachedMessages));
 }
 
 @JsonKey(includeFromJson: false, includeToJson: false)
 @override
-int get hashCode => Object.hash(runtimeType,userMessage,sequenceId,const DeepCollectionEquality().hash(accpetProposals));
+int get hashCode => Object.hash(runtimeType,userMessage,sequenceId,const DeepCollectionEquality().hash(accpetProposals),const DeepCollectionEquality().hash(attachedPosts),const DeepCollectionEquality().hash(attachedMessages));
 
 @override
 String toString() {
-  return 'StreamThinkingRequest(userMessage: $userMessage, sequenceId: $sequenceId, accpetProposals: $accpetProposals)';
+  return 'StreamThinkingRequest(userMessage: $userMessage, sequenceId: $sequenceId, accpetProposals: $accpetProposals, attachedPosts: $attachedPosts, attachedMessages: $attachedMessages)';
 }
 
 
@@ -48,7 +48,7 @@ abstract mixin class $StreamThinkingRequestCopyWith<$Res>  {
   factory $StreamThinkingRequestCopyWith(StreamThinkingRequest value, $Res Function(StreamThinkingRequest) _then) = _$StreamThinkingRequestCopyWithImpl;
 @useResult
 $Res call({
- String userMessage, String? sequenceId, List<String> accpetProposals
+ String userMessage, String? sequenceId, List<String> accpetProposals, List<String>? attachedPosts, List<Map<String, dynamic>>? attachedMessages
 });
 
 
@@ -65,12 +65,14 @@ class _$StreamThinkingRequestCopyWithImpl<$Res>
 
 /// Create a copy of StreamThinkingRequest
 /// with the given fields replaced by the non-null parameter values.
-@pragma('vm:prefer-inline') @override $Res call({Object? userMessage = null,Object? sequenceId = freezed,Object? accpetProposals = null,}) {
+@pragma('vm:prefer-inline') @override $Res call({Object? userMessage = null,Object? sequenceId = freezed,Object? accpetProposals = null,Object? attachedPosts = freezed,Object? attachedMessages = freezed,}) {
   return _then(_self.copyWith(
 userMessage: null == userMessage ? _self.userMessage : userMessage // ignore: cast_nullable_to_non_nullable
 as String,sequenceId: freezed == sequenceId ? _self.sequenceId : sequenceId // ignore: cast_nullable_to_non_nullable
 as String?,accpetProposals: null == accpetProposals ? _self.accpetProposals : accpetProposals // ignore: cast_nullable_to_non_nullable
-as List<String>,
+as List<String>,attachedPosts: freezed == attachedPosts ? _self.attachedPosts : attachedPosts // ignore: cast_nullable_to_non_nullable
+as List<String>?,attachedMessages: freezed == attachedMessages ? _self.attachedMessages : attachedMessages // ignore: cast_nullable_to_non_nullable
+as List<Map<String, dynamic>>?,
   ));
 }
 
@@ -152,10 +154,10 @@ return $default(_that);case _:
 /// }
 /// ```
 
-@optionalTypeArgs TResult maybeWhen<TResult extends Object?>(TResult Function( String userMessage,  String? sequenceId,  List<String> accpetProposals)?  $default,{required TResult orElse(),}) {final _that = this;
+@optionalTypeArgs TResult maybeWhen<TResult extends Object?>(TResult Function( String userMessage,  String? sequenceId,  List<String> accpetProposals,  List<String>? attachedPosts,  List<Map<String, dynamic>>? attachedMessages)?  $default,{required TResult orElse(),}) {final _that = this;
 switch (_that) {
 case _StreamThinkingRequest() when $default != null:
-return $default(_that.userMessage,_that.sequenceId,_that.accpetProposals);case _:
+return $default(_that.userMessage,_that.sequenceId,_that.accpetProposals,_that.attachedPosts,_that.attachedMessages);case _:
   return orElse();
 
 }
@@ -173,10 +175,10 @@ return $default(_that.userMessage,_that.sequenceId,_that.accpetProposals);case _
 /// }
 /// ```
 
-@optionalTypeArgs TResult when<TResult extends Object?>(TResult Function( String userMessage,  String? sequenceId,  List<String> accpetProposals)  $default,) {final _that = this;
+@optionalTypeArgs TResult when<TResult extends Object?>(TResult Function( String userMessage,  String? sequenceId,  List<String> accpetProposals,  List<String>? attachedPosts,  List<Map<String, dynamic>>? attachedMessages)  $default,) {final _that = this;
 switch (_that) {
 case _StreamThinkingRequest():
-return $default(_that.userMessage,_that.sequenceId,_that.accpetProposals);}
+return $default(_that.userMessage,_that.sequenceId,_that.accpetProposals,_that.attachedPosts,_that.attachedMessages);}
 }
 /// A variant of `when` that fallback to returning `null`
 ///
@@ -190,10 +192,10 @@ return $default(_that.userMessage,_that.sequenceId,_that.accpetProposals);}
 /// }
 /// ```
 
-@optionalTypeArgs TResult? whenOrNull<TResult extends Object?>(TResult? Function( String userMessage,  String? sequenceId,  List<String> accpetProposals)?  $default,) {final _that = this;
+@optionalTypeArgs TResult? whenOrNull<TResult extends Object?>(TResult? Function( String userMessage,  String? sequenceId,  List<String> accpetProposals,  List<String>? attachedPosts,  List<Map<String, dynamic>>? attachedMessages)?  $default,) {final _that = this;
 switch (_that) {
 case _StreamThinkingRequest() when $default != null:
-return $default(_that.userMessage,_that.sequenceId,_that.accpetProposals);case _:
+return $default(_that.userMessage,_that.sequenceId,_that.accpetProposals,_that.attachedPosts,_that.attachedMessages);case _:
   return null;
 
 }
@@ -205,7 +207,7 @@ return $default(_that.userMessage,_that.sequenceId,_that.accpetProposals);case _
 @JsonSerializable()
 
 class _StreamThinkingRequest implements StreamThinkingRequest {
-  const _StreamThinkingRequest({required this.userMessage, this.sequenceId, final  List<String> accpetProposals = const []}): _accpetProposals = accpetProposals;
+  const _StreamThinkingRequest({required this.userMessage, this.sequenceId, final  List<String> accpetProposals = const [], final  List<String>? attachedPosts, final  List<Map<String, dynamic>>? attachedMessages}): _accpetProposals = accpetProposals,_attachedPosts = attachedPosts,_attachedMessages = attachedMessages;
   factory _StreamThinkingRequest.fromJson(Map<String, dynamic> json) => _$StreamThinkingRequestFromJson(json);
 
 @override final  String userMessage;
@@ -217,6 +219,24 @@ class _StreamThinkingRequest implements StreamThinkingRequest {
   return EqualUnmodifiableListView(_accpetProposals);
 }
 
+ final  List<String>? _attachedPosts;
+@override List<String>? get attachedPosts {
+  final value = _attachedPosts;
+  if (value == null) return null;
+  if (_attachedPosts is EqualUnmodifiableListView) return _attachedPosts;
+  // ignore: implicit_dynamic_type
+  return EqualUnmodifiableListView(value);
+}
+
+ final  List<Map<String, dynamic>>? _attachedMessages;
+@override List<Map<String, dynamic>>? get attachedMessages {
+  final value = _attachedMessages;
+  if (value == null) return null;
+  if (_attachedMessages is EqualUnmodifiableListView) return _attachedMessages;
+  // ignore: implicit_dynamic_type
+  return EqualUnmodifiableListView(value);
+}
+
 
 /// Create a copy of StreamThinkingRequest
 /// with the given fields replaced by the non-null parameter values.
@@ -231,16 +251,16 @@ Map<String, dynamic> toJson() {
 
 @override
 bool operator ==(Object other) {
-  return identical(this, other) || (other.runtimeType == runtimeType&&other is _StreamThinkingRequest&&(identical(other.userMessage, userMessage) || other.userMessage == userMessage)&&(identical(other.sequenceId, sequenceId) || other.sequenceId == sequenceId)&&const DeepCollectionEquality().equals(other._accpetProposals, _accpetProposals));
+  return identical(this, other) || (other.runtimeType == runtimeType&&other is _StreamThinkingRequest&&(identical(other.userMessage, userMessage) || other.userMessage == userMessage)&&(identical(other.sequenceId, sequenceId) || other.sequenceId == sequenceId)&&const DeepCollectionEquality().equals(other._accpetProposals, _accpetProposals)&&const DeepCollectionEquality().equals(other._attachedPosts, _attachedPosts)&&const DeepCollectionEquality().equals(other._attachedMessages, _attachedMessages));
 }
 
 @JsonKey(includeFromJson: false, includeToJson: false)
 @override
-int get hashCode => Object.hash(runtimeType,userMessage,sequenceId,const DeepCollectionEquality().hash(_accpetProposals));
+int get hashCode => Object.hash(runtimeType,userMessage,sequenceId,const DeepCollectionEquality().hash(_accpetProposals),const DeepCollectionEquality().hash(_attachedPosts),const DeepCollectionEquality().hash(_attachedMessages));
 
 @override
 String toString() {
-  return 'StreamThinkingRequest(userMessage: $userMessage, sequenceId: $sequenceId, accpetProposals: $accpetProposals)';
+  return 'StreamThinkingRequest(userMessage: $userMessage, sequenceId: $sequenceId, accpetProposals: $accpetProposals, attachedPosts: $attachedPosts, attachedMessages: $attachedMessages)';
 }
 
 
@@ -251,7 +271,7 @@ abstract mixin class _$StreamThinkingRequestCopyWith<$Res> implements $StreamThi
   factory _$StreamThinkingRequestCopyWith(_StreamThinkingRequest value, $Res Function(_StreamThinkingRequest) _then) = __$StreamThinkingRequestCopyWithImpl;
 @override @useResult
 $Res call({
- String userMessage, String? sequenceId, List<String> accpetProposals
+ String userMessage, String? sequenceId, List<String> accpetProposals, List<String>? attachedPosts, List<Map<String, dynamic>>? attachedMessages
 });
 
 
@@ -268,12 +288,14 @@ class __$StreamThinkingRequestCopyWithImpl<$Res>
 
 /// Create a copy of StreamThinkingRequest
 /// with the given fields replaced by the non-null parameter values.
-@override @pragma('vm:prefer-inline') $Res call({Object? userMessage = null,Object? sequenceId = freezed,Object? accpetProposals = null,}) {
+@override @pragma('vm:prefer-inline') $Res call({Object? userMessage = null,Object? sequenceId = freezed,Object? accpetProposals = null,Object? attachedPosts = freezed,Object? attachedMessages = freezed,}) {
   return _then(_StreamThinkingRequest(
 userMessage: null == userMessage ? _self.userMessage : userMessage // ignore: cast_nullable_to_non_nullable
 as String,sequenceId: freezed == sequenceId ? _self.sequenceId : sequenceId // ignore: cast_nullable_to_non_nullable
 as String?,accpetProposals: null == accpetProposals ? _self._accpetProposals : accpetProposals // ignore: cast_nullable_to_non_nullable
-as List<String>,
+as List<String>,attachedPosts: freezed == attachedPosts ? _self._attachedPosts : attachedPosts // ignore: cast_nullable_to_non_nullable
+as List<String>?,attachedMessages: freezed == attachedMessages ? _self._attachedMessages : attachedMessages // ignore: cast_nullable_to_non_nullable
+as List<Map<String, dynamic>>?,
   ));
 }
 

lib/models/thought.g.dart

@@ -16,6 +16,14 @@ _StreamThinkingRequest _$StreamThinkingRequestFromJson(
           ?.map((e) => e as String)
           .toList() ??
       const [],
+  attachedPosts:
+      (json['attached_posts'] as List<dynamic>?)
+          ?.map((e) => e as String)
+          .toList(),
+  attachedMessages:
+      (json['attached_messages'] as List<dynamic>?)
+          ?.map((e) => e as Map<String, dynamic>)
+          .toList(),
 );
 
 Map<String, dynamic> _$StreamThinkingRequestToJson(
@@ -24,6 +32,8 @@ Map<String, dynamic> _$StreamThinkingRequestToJson(
   'user_message': instance.userMessage,
   'sequence_id': instance.sequenceId,
   'accpet_proposals': instance.accpetProposals,
+  'attached_posts': instance.attachedPosts,
+  'attached_messages': instance.attachedMessages,
 };
 
 _SnThinkingChunk _$SnThinkingChunkFromJson(Map<String, dynamic> json) =>

lib/screens/posts/post_detail.dart

@@ -22,6 +22,7 @@ import 'package:island/widgets/response.dart';
 import 'package:island/utils/share_utils.dart';
 import 'package:island/widgets/safety/abuse_report_helper.dart';
 import 'package:island/widgets/share/share_sheet.dart';
+import 'package:island/screens/thought/think_sheet.dart';
 import 'package:material_symbols_icons/symbols.dart';
 import 'package:riverpod_annotation/riverpod_annotation.dart';
 import 'package:styled_widget/styled_widget.dart';
@@ -297,6 +298,16 @@ class PostActionButtons extends HookConsumerWidget {
       ),
     );
 
+    actions.add(
+      FilledButton.tonalIcon(
+        onPressed: () {
+          ThoughtSheet.show(context, attachedPosts: [post.id]);
+        },
+        icon: const Icon(Symbols.smart_toy),
+        label: Text('aiThought'.tr()),
+      ),
+    );
+
     actions.add(
       Row(
         mainAxisSize: MainAxisSize.min,

lib/screens/thought/think.dart

@@ -164,6 +164,8 @@ class ThoughtScreen extends HookConsumerWidget {
         userMessage: userMessage,
         sequenceId: selectedSequenceId.value,
         accpetProposals: ['post_create'],
+        attachedMessages: [], // Message datas
+        attachedPosts: [], // ID list for posts
       );
 
       try {

lib/screens/thought/think_sheet.dart

@@ -0,0 +1,866 @@
+import "dart:convert";
+import "package:dio/dio.dart";
+import "package:easy_localization/easy_localization.dart";
+import "package:flutter/material.dart";
+import "package:flutter/services.dart";
+import "package:flutter_hooks/flutter_hooks.dart";
+import "package:gap/gap.dart";
+import "package:google_fonts/google_fonts.dart";
+import "package:hooks_riverpod/hooks_riverpod.dart";
+import "package:island/models/thought.dart";
+import "package:island/pods/network.dart";
+import "package:island/pods/userinfo.dart";
+import "package:island/services/time.dart";
+import "package:island/widgets/alert.dart";
+import "package:island/widgets/content/markdown.dart";
+import "package:island/widgets/content/sheet.dart";
+import "package:island/widgets/post/compose_dialog.dart";
+import "package:island/screens/posts/compose.dart";
+import "package:material_symbols_icons/material_symbols_icons.dart";
+import "package:styled_widget/styled_widget.dart";
+import "package:super_sliver_list/super_sliver_list.dart";
+import "package:markdown/markdown.dart" as markdown;
+import "package:markdown_widget/markdown_widget.dart";
+
+class ThoughtSheet extends HookConsumerWidget {
+  final List<Map<String, dynamic>> attachedMessages;
+  final List<String> attachedPosts;
+
+  const ThoughtSheet({
+    super.key,
+    this.attachedMessages = const [],
+    this.attachedPosts = const [],
+  });
+
+  static Future<void> show(
+    BuildContext context, {
+    List<Map<String, dynamic>> attachedMessages = const [],
+    List<String> attachedPosts = const [],
+  }) {
+    return showModalBottomSheet(
+      context: context,
+      isScrollControlled: true,
+      useSafeArea: true,
+      builder:
+          (context) => ThoughtSheet(
+            attachedMessages: attachedMessages,
+            attachedPosts: attachedPosts,
+          ),
+    );
+  }
+
+  @override
+  Widget build(BuildContext context, WidgetRef ref) {
+    // Extract proposals from text content
+    List<Map<String, String>> extractProposals(String content) {
+      final proposalRegex = RegExp(
+        r'<proposal\s+type="([^"]+)">(.*?)<\/proposal>',
+        dotAll: true,
+      );
+      final matches = proposalRegex.allMatches(content);
+      return matches.map((match) {
+        return {'type': match.group(1)!, 'content': match.group(2)!};
+      }).toList();
+    }
+
+    void handleProposalAction(
+      BuildContext context,
+      Map<String, String> proposal,
+    ) {
+      switch (proposal['type']) {
+        case 'post_create':
+          // Show post creation dialog with the proposal content
+          PostComposeDialog.show(
+            context,
+            initialState: PostComposeInitialState(
+              content: (proposal['content'] ?? '').trim(),
+            ),
+          );
+          break;
+        default:
+          // Show a snackbar for unsupported proposal types
+          showSnackBar('Unsupported proposal type: ${proposal['type']}');
+      }
+    }
+
+    final localThoughts = useState<List<SnThinkingThought>>([]);
+    final currentTopic = useState<String?>('aiThought'.tr());
+
+    final messageController = useTextEditingController();
+    final scrollController = useScrollController();
+    final isStreaming = useState(false);
+    final streamingText = useState<String>('');
+    final functionCalls = useState<List<String>>([]);
+    final reasoningChunks = useState<List<String>>([]);
+
+    final listController = useMemoized(() => ListController(), []);
+
+    // Scroll to bottom when thoughts change or streaming state changes
+    useEffect(() {
+      if (localThoughts.value.isNotEmpty || isStreaming.value) {
+        WidgetsBinding.instance.addPostFrameCallback((_) {
+          scrollController.animateTo(
+            0,
+            duration: const Duration(milliseconds: 300),
+            curve: Curves.easeOut,
+          );
+        });
+      }
+      return null;
+    }, [localThoughts.value.length, isStreaming.value]);
+
+    void sendMessage() async {
+      if (messageController.text.trim().isEmpty) return;
+
+      final userMessage = messageController.text.trim();
+
+      // Add user message to local thoughts
+      final userInfo = ref.read(userInfoProvider);
+      final now = DateTime.now();
+      final userThought = SnThinkingThought(
+        id: 'user-${DateTime.now().millisecondsSinceEpoch}',
+        content: userMessage,
+        files: [],
+        role: ThinkingThoughtRole.user,
+        sequenceId: '',
+        createdAt: now,
+        updatedAt: now,
+        sequence: SnThinkingSequence(
+          id: '',
+          accountId: userInfo.value!.id,
+          createdAt: now,
+          updatedAt: now,
+        ),
+      );
+      localThoughts.value = [userThought, ...localThoughts.value];
+
+      final request = StreamThinkingRequest(
+        userMessage: userMessage,
+        sequenceId: null,
+        accpetProposals: ['post_create'],
+        attachedMessages: attachedMessages,
+        attachedPosts: attachedPosts,
+      );
+
+      try {
+        isStreaming.value = true;
+        streamingText.value = '';
+        functionCalls.value = [];
+        reasoningChunks.value = [];
+
+        final apiClient = ref.read(apiClientProvider);
+        final response = await apiClient.post(
+          '/insight/thought',
+          data: request.toJson(),
+          options: Options(
+            responseType: ResponseType.stream,
+            sendTimeout: Duration(minutes: 1),
+            receiveTimeout: Duration(minutes: 1),
+          ),
+        );
+
+        final stream = response.data.stream;
+        final lineBuffer = StringBuffer();
+
+        stream.listen(
+          (data) {
+            final chunk = utf8.decode(data);
+            lineBuffer.write(chunk);
+            final lines = lineBuffer.toString().split('\n');
+            lineBuffer.clear();
+            lineBuffer.write(lines.last); // keep incomplete line
+
+            for (final line in lines.sublist(0, lines.length - 1)) {
+              if (line.trim().isEmpty) continue;
+              try {
+                if (line.startsWith('data: ')) {
+                  final jsonStr = line.substring(6);
+                  final event = jsonDecode(jsonStr);
+                  final type = event['type'];
+                  final eventData = event['data'];
+                  if (type == 'text') {
+                    streamingText.value += eventData;
+                  } else if (type == 'function_call') {
+                    functionCalls.value = [
+                      ...functionCalls.value,
+                      JsonEncoder.withIndent('  ').convert(eventData),
+                    ];
+                  } else if (type == 'reasoning') {
+                    reasoningChunks.value = [
+                      ...reasoningChunks.value,
+                      eventData,
+                    ];
+                  }
+                } else if (line.startsWith('topic: ')) {
+                  final jsonStr = line.substring(7);
+                  final event = jsonDecode(jsonStr);
+                  currentTopic.value = event['data'];
+                } else if (line.startsWith('thought: ')) {
+                  final jsonStr = line.substring(9);
+                  final event = jsonDecode(jsonStr);
+                  final aiThought = SnThinkingThought.fromJson(event['data']);
+                  localThoughts.value = [aiThought, ...localThoughts.value];
+                  isStreaming.value = false;
+                }
+              } catch (e) {
+                // Ignore parsing errors for individual events
+              }
+            }
+          },
+          onDone: () {
+            if (isStreaming.value) {
+              isStreaming.value = false;
+              showErrorAlert('thoughtParseError'.tr());
+            }
+          },
+          onError: (error) {
+            isStreaming.value = false;
+            if (error is DioException && error.response?.data is ResponseBody) {
+              showErrorAlert('toughtParseError'.tr());
+            } else {
+              showErrorAlert(error);
+            }
+          },
+        );
+
+        messageController.clear();
+        FocusManager.instance.primaryFocus?.unfocus();
+      } catch (error) {
+        isStreaming.value = false;
+        showErrorAlert(error);
+      }
+    }
+
+    Widget buildChunkTiles(List<SnThinkingChunk> chunks) {
+      return Column(
+        children: [
+          ...chunks
+              .where((chunk) => chunk.type == ThinkingChunkType.reasoning)
+              .map(
+                (chunk) => Card(
+                  margin: const EdgeInsets.only(bottom: 8),
+                  child: Theme(
+                    data: Theme.of(
+                      context,
+                    ).copyWith(dividerColor: Colors.transparent),
+                    child: ExpansionTile(
+                      shape: RoundedRectangleBorder(
+                        borderRadius: BorderRadius.circular(8),
+                      ),
+                      title: Text(
+                        'Reasoning',
+                        style: Theme.of(context).textTheme.titleSmall,
+                      ),
+                      children: [
+                        Padding(
+                          padding: const EdgeInsets.all(8.0),
+                          child: Text(
+                            chunk.data?['content'] ?? '',
+                            style: Theme.of(context).textTheme.bodyMedium,
+                          ),
+                        ),
+                      ],
+                    ),
+                  ),
+                ),
+              ),
+          ...chunks
+              .where((chunk) => chunk.type == ThinkingChunkType.functionCall)
+              .map(
+                (chunk) => Card(
+                  margin: const EdgeInsets.only(bottom: 8),
+                  child: Theme(
+                    data: Theme.of(
+                      context,
+                    ).copyWith(dividerColor: Colors.transparent),
+                    child: ExpansionTile(
+                      shape: RoundedRectangleBorder(
+                        borderRadius: BorderRadius.circular(8),
+                      ),
+                      visualDensity: VisualDensity.compact,
+                      title: Text(
+                        'Function Call',
+                        style: Theme.of(context).textTheme.titleSmall,
+                      ),
+                      children: [
+                        Padding(
+                          padding: const EdgeInsets.all(8.0),
+                          child: SelectableText(
+                            JsonEncoder.withIndent('  ').convert(chunk.data),
+                            style: GoogleFonts.robotoMono(),
+                          ),
+                        ),
+                      ],
+                    ),
+                  ),
+                ),
+              ),
+        ],
+      );
+    }
+
+    Widget thoughtItem(SnThinkingThought thought, int index) {
+      final key = Key('thought-${thought.id}');
+
+      // Extract proposals from thought content
+      final proposals =
+          thought.content != null ? extractProposals(thought.content!) : [];
+
+      final thoughtWidget = Container(
+        margin: const EdgeInsets.symmetric(vertical: 8, horizontal: 16),
+        padding: const EdgeInsets.all(12),
+        decoration: BoxDecoration(
+          color:
+              thought.role == ThinkingThoughtRole.assistant
+                  ? Theme.of(context).colorScheme.surfaceContainerHighest
+                  : Theme.of(context).colorScheme.primaryContainer,
+          borderRadius: BorderRadius.circular(12),
+        ),
+        child: Column(
+          crossAxisAlignment: CrossAxisAlignment.start,
+          children: [
+            Row(
+              children: [
+                Icon(
+                  thought.role == ThinkingThoughtRole.assistant
+                      ? Symbols.smart_toy
+                      : Symbols.person,
+                  size: 20,
+                ),
+                const Gap(8),
+                Expanded(
+                  child: Row(
+                    crossAxisAlignment: CrossAxisAlignment.baseline,
+                    textBaseline: TextBaseline.ideographic,
+                    spacing: 8,
+                    children: [
+                      Text(
+                        thought.role == ThinkingThoughtRole.assistant
+                            ? 'thoughtAiName'.tr()
+                            : 'thoughtUserName'.tr(),
+                        style: Theme.of(context).textTheme.titleSmall,
+                      ),
+                      Tooltip(
+                        message: thought.createdAt.formatSystem(),
+                        child: Text(
+                          thought.createdAt.formatRelative(context),
+                          style: Theme.of(
+                            context,
+                          ).textTheme.bodySmall?.copyWith(
+                            color:
+                                Theme.of(context).colorScheme.onSurfaceVariant,
+                          ),
+                        ),
+                      ),
+                    ],
+                  ),
+                ),
+                if (thought.role == ThinkingThoughtRole.assistant)
+                  SizedBox(
+                    height: 20,
+                    width: 20,
+                    child: IconButton(
+                      visualDensity: VisualDensity(
+                        horizontal: -4,
+                        vertical: -4,
+                      ),
+                      padding: EdgeInsets.zero,
+                      iconSize: 16,
+                      icon: Icon(Symbols.content_copy),
+                      onPressed: () {
+                        Clipboard.setData(
+                          ClipboardData(text: thought.content ?? ''),
+                        );
+                        showSnackBar('copiedToClipboard'.tr());
+                      },
+                    ),
+                  ),
+              ],
+            ),
+            const Gap(8),
+            if (thought.chunks.isNotEmpty) ...[
+              buildChunkTiles(thought.chunks),
+              const Gap(8),
+            ],
+            if (thought.content != null)
+              MarkdownTextContent(
+                isSelectable: true,
+                content: thought.content!,
+                extraBlockSyntaxList: [ProposalBlockSyntax()],
+                textStyle: Theme.of(context).textTheme.bodyMedium,
+                extraGenerators: [
+                  ProposalGenerator(
+                    backgroundColor:
+                        Theme.of(context).colorScheme.secondaryContainer,
+                    foregroundColor:
+                        Theme.of(context).colorScheme.onSecondaryContainer,
+                    borderColor: Theme.of(context).colorScheme.outline,
+                  ),
+                ],
+              ),
+            if (thought.role == ThinkingThoughtRole.assistant &&
+                (thought.tokenCount != null || thought.modelName != null)) ...[
+              const Gap(8),
+              Row(
+                children: [
+                  if (thought.modelName != null) ...[
+                    const Icon(Symbols.neurology, size: 16),
+                    const Gap(4),
+                    Text(
+                      '${thought.modelName}',
+                      style: Theme.of(context).textTheme.bodySmall?.copyWith(
+                        color: Theme.of(context).colorScheme.onSurfaceVariant,
+                      ),
+                    ),
+                    const Gap(16),
+                  ],
+                  if (thought.tokenCount != null)
+                    ...([
+                      const Icon(Symbols.token, size: 16),
+                      const Gap(4),
+                      Text(
+                        '${thought.tokenCount} tokens',
+                        style: Theme.of(context).textTheme.bodySmall?.copyWith(
+                          color: Theme.of(context).colorScheme.onSurfaceVariant,
+                        ),
+                      ),
+                    ]),
+                ],
+              ),
+            ],
+            if (proposals.isNotEmpty &&
+                thought.role == ThinkingThoughtRole.assistant) ...[
+              const Gap(12),
+              Wrap(
+                spacing: 8,
+                runSpacing: 8,
+                children:
+                    proposals.map((proposal) {
+                      return ElevatedButton.icon(
+                        onPressed:
+                            () => handleProposalAction(context, proposal),
+                        icon: Icon(switch (proposal['type']) {
+                          'post_create' => Symbols.add,
+                          _ => Symbols.lightbulb,
+                        }, size: 16),
+                        label: Text(switch (proposal['type']) {
+                          'post_create' => 'Create Post',
+                          _ => proposal['type'] ?? 'Action',
+                        }),
+                        style: ElevatedButton.styleFrom(
+                          backgroundColor:
+                              Theme.of(context).colorScheme.primaryContainer,
+                          foregroundColor:
+                              Theme.of(context).colorScheme.onPrimaryContainer,
+                          padding: const EdgeInsets.symmetric(
+                            horizontal: 12,
+                            vertical: 8,
+                          ),
+                        ),
+                      );
+                    }).toList(),
+              ),
+            ],
+          ],
+        ),
+      );
+
+      return TweenAnimationBuilder<double>(
+        key: key,
+        tween: Tween<double>(begin: 0.0, end: 1.0),
+        duration: Duration(
+          milliseconds: 400 + (index % 5) * 50,
+        ), // Staggered delay
+        curve: Curves.easeOutCubic,
+        builder: (context, animationValue, child) {
+          return Transform.translate(
+            offset: Offset(
+              0,
+              20 * (1 - animationValue),
+            ), // Slide up from bottom
+            child: Opacity(opacity: animationValue, child: child),
+          );
+        },
+        child: thoughtWidget,
+      );
+    }
+
+    Widget streamingThoughtItem() => Container(
+      margin: const EdgeInsets.symmetric(vertical: 8, horizontal: 16),
+      padding: const EdgeInsets.all(12),
+      decoration: BoxDecoration(
+        color: Theme.of(context).colorScheme.surfaceContainerHighest,
+        borderRadius: BorderRadius.circular(12),
+      ),
+      child: Column(
+        crossAxisAlignment: CrossAxisAlignment.start,
+        children: [
+          Row(
+            children: [
+              Icon(Symbols.smart_toy, size: 20),
+              const Gap(8),
+              Text(
+                'thoughtAiName'.tr(),
+                style: Theme.of(context).textTheme.titleSmall,
+              ),
+              const Spacer(),
+              SizedBox(
+                width: 16,
+                height: 16,
+                child: CircularProgressIndicator(strokeWidth: 2),
+              ),
+            ],
+          ),
+          const Gap(8),
+          MarkdownTextContent(
+            content: streamingText.value,
+            textStyle: Theme.of(context).textTheme.bodyMedium,
+            extraBlockSyntaxList: [ProposalBlockSyntax()],
+            extraGenerators: [
+              ProposalGenerator(
+                backgroundColor:
+                    Theme.of(context).colorScheme.secondaryContainer,
+                foregroundColor:
+                    Theme.of(context).colorScheme.onSecondaryContainer,
+                borderColor: Theme.of(context).colorScheme.outline,
+              ),
+            ],
+          ),
+          if (reasoningChunks.value.isNotEmpty ||
+              functionCalls.value.isNotEmpty) ...[
+            const Gap(8),
+            Column(
+              children: [
+                ...reasoningChunks.value.map(
+                  (chunk) => Card(
+                    margin: const EdgeInsets.only(bottom: 8),
+                    child: Theme(
+                      data: Theme.of(
+                        context,
+                      ).copyWith(dividerColor: Colors.transparent),
+                      child: ExpansionTile(
+                        shape: RoundedRectangleBorder(
+                          borderRadius: BorderRadius.circular(8),
+                        ),
+                        title: Text(
+                          'Reasoning',
+                          style: Theme.of(context).textTheme.titleSmall,
+                        ),
+                        children: [
+                          Padding(
+                            padding: const EdgeInsets.all(8.0),
+                            child: Text(
+                              chunk,
+                              style: Theme.of(context).textTheme.bodyMedium,
+                            ),
+                          ),
+                        ],
+                      ),
+                    ),
+                  ),
+                ),
+                ...functionCalls.value.map(
+                  (call) => Card(
+                    margin: const EdgeInsets.only(bottom: 8),
+                    child: Theme(
+                      data: Theme.of(
+                        context,
+                      ).copyWith(dividerColor: Colors.transparent),
+                      child: ExpansionTile(
+                        shape: RoundedRectangleBorder(
+                          borderRadius: BorderRadius.circular(8),
+                        ),
+                        visualDensity: VisualDensity.compact,
+                        title: Text(
+                          'Function Call',
+                          style: Theme.of(context).textTheme.titleSmall,
+                        ),
+                        children: [
+                          Padding(
+                            padding: const EdgeInsets.all(8.0),
+                            child: SelectableText(
+                              call,
+                              style: GoogleFonts.robotoMono(),
+                            ),
+                          ),
+                        ],
+                      ),
+                    ),
+                  ),
+                ),
+              ],
+            ),
+          ],
+        ],
+      ),
+    );
+
+    return SheetScaffold(
+      titleText: currentTopic.value ?? 'aiThought'.tr(),
+      child: Center(
+        child: Container(
+          constraints: BoxConstraints(maxWidth: 640),
+          child: Column(
+            children: [
+              Expanded(
+                child: SuperListView.builder(
+                  listController: listController,
+                  controller: scrollController,
+                  padding: const EdgeInsets.only(top: 16, bottom: 16),
+                  reverse: true,
+                  itemCount:
+                      localThoughts.value.length + (isStreaming.value ? 1 : 0),
+                  itemBuilder: (context, index) {
+                    if (isStreaming.value && index == 0) {
+                      return streamingThoughtItem();
+                    }
+                    final thoughtIndex = isStreaming.value ? index - 1 : index;
+                    final thought = localThoughts.value[thoughtIndex];
+                    return thoughtItem(thought, thoughtIndex);
+                  },
+                ),
+              ),
+              Column(
+                mainAxisSize: MainAxisSize.min,
+                children: [
+                  if (attachedMessages.isNotEmpty || attachedPosts.isNotEmpty)
+                    Container(
+                      margin: const EdgeInsets.only(
+                        left: 16,
+                        right: 16,
+                        bottom: 8,
+                      ),
+                      child: Row(
+                        children: [
+                          Icon(
+                            Symbols.attach_file,
+                            size: 16,
+                            color: Theme.of(context).colorScheme.primary,
+                          ),
+                          const Gap(8),
+                          Expanded(
+                            child: Text(
+                              [
+                                if (attachedMessages.isNotEmpty)
+                                  '${attachedMessages.length} message${attachedMessages.length > 1 ? 's' : ''}',
+                                if (attachedPosts.isNotEmpty)
+                                  '${attachedPosts.length} post${attachedPosts.length > 1 ? 's' : ''}',
+                              ].join(', '),
+                              style: Theme.of(
+                                context,
+                              ).textTheme.bodySmall?.copyWith(
+                                color: Theme.of(context).colorScheme.primary,
+                                fontWeight: FontWeight.w500,
+                              ),
+                            ),
+                          ),
+                          IconButton(
+                            icon: const Icon(Symbols.close, size: 16),
+                            onPressed: () {
+                              // Note: Since these are final parameters, we can't modify them directly
+                              // This would require making the sheet stateful or using a callback
+                              // For now, just show the indicator without remove functionality
+                            },
+                            style: IconButton.styleFrom(
+                              minimumSize: const Size(24, 24),
+                              padding: EdgeInsets.zero,
+                            ),
+                          ),
+                        ],
+                      ),
+                    ),
+                  Container(
+                    margin: EdgeInsets.only(
+                      left: 16,
+                      right: 16,
+                      bottom: 16 + MediaQuery.of(context).padding.bottom,
+                    ),
+                    child: Material(
+                      elevation: 2,
+                      color:
+                          Theme.of(context).colorScheme.surfaceContainerHighest,
+                      borderRadius: BorderRadius.circular(32),
+                      child: Padding(
+                        padding: const EdgeInsets.symmetric(
+                          vertical: 6,
+                          horizontal: 8,
+                        ),
+                        child: Row(
+                          crossAxisAlignment: CrossAxisAlignment.start,
+                          children: [
+                            Expanded(
+                              child: TextField(
+                                controller: messageController,
+                                keyboardType: TextInputType.multiline,
+                                enabled: !isStreaming.value,
+                                decoration: InputDecoration(
+                                  hintText:
+                                      isStreaming.value
+                                          ? 'thoughtStreamingHint'.tr()
+                                          : 'thoughtInputHint'.tr(),
+                                  border: InputBorder.none,
+                                  isDense: true,
+                                  contentPadding: const EdgeInsets.symmetric(
+                                    horizontal: 12,
+                                    vertical: 12,
+                                  ),
+                                ),
+                                maxLines: 5,
+                                minLines: 1,
+                                textInputAction: TextInputAction.send,
+                                onSubmitted: (_) => sendMessage(),
+                              ),
+                            ),
+                            IconButton(
+                              icon: Icon(
+                                isStreaming.value ? Symbols.stop : Icons.send,
+                              ),
+                              color: Theme.of(context).colorScheme.primary,
+                              onPressed: sendMessage,
+                            ),
+                          ],
+                        ),
+                      ),
+                    ),
+                  ),
+                ],
+              ),
+            ],
+          ),
+        ),
+      ),
+    );
+  }
+}
+
+class ProposalBlockSyntax extends markdown.BlockSyntax {
+  @override
+  RegExp get pattern => RegExp(r'^<proposal', caseSensitive: false);
+
+  @override
+  bool canParse(markdown.BlockParser parser) {
+    return pattern.hasMatch(parser.current.content);
+  }
+
+  @override
+  bool canEndBlock(markdown.BlockParser parser) {
+    return parser.current.content.contains('</proposal>');
+  }
+
+  @override
+  markdown.Node parse(markdown.BlockParser parser) {
+    final childLines = <String>[];
+
+    // Extract type from opening tag
+    final openingLine = parser.current.content;
+    final attrsMatch = RegExp(
+      r'<proposal(\s[^>]*)?>',
+      caseSensitive: false,
+    ).firstMatch(openingLine);
+    final attrs = attrsMatch?.group(1) ?? '';
+    final typeMatch = RegExp(r'type="([^"]*)"').firstMatch(attrs);
+    final type = typeMatch?.group(1) ?? '';
+
+    // Collect all lines until closing tag
+    while (!parser.isDone) {
+      childLines.add(parser.current.content);
+      if (canEndBlock(parser)) {
+        parser.advance();
+        break;
+      }
+      parser.advance();
+    }
+
+    // Extract content between tags
+    final fullContent = childLines.join('\n');
+    final contentMatch = RegExp(
+      r'<proposal[^>]*>(.*?)</proposal>',
+      dotAll: true,
+      caseSensitive: false,
+    ).firstMatch(fullContent);
+    final content = contentMatch?.group(1)?.trim() ?? '';
+
+    final element = markdown.Element('proposal', [markdown.Text(content)])
+      ..attributes['type'] = type;
+
+    return element;
+  }
+}
+
+class ProposalGenerator extends SpanNodeGeneratorWithTag {
+  ProposalGenerator({
+    required Color backgroundColor,
+    required Color foregroundColor,
+    required Color borderColor,
+  }) : super(
+         tag: 'proposal',
+         generator: (
+           markdown.Element element,
+           MarkdownConfig config,
+           WidgetVisitor visitor,
+         ) {
+           return ProposalSpanNode(
+             text: element.textContent,
+             type: element.attributes['type'] ?? '',
+             backgroundColor: backgroundColor,
+             foregroundColor: foregroundColor,
+             borderColor: borderColor,
+           );
+         },
+       );
+}
+
+class ProposalSpanNode extends SpanNode {
+  final String text;
+  final String type;
+  final Color backgroundColor;
+  final Color foregroundColor;
+  final Color borderColor;
+
+  ProposalSpanNode({
+    required this.text,
+    required this.type,
+    required this.backgroundColor,
+    required this.foregroundColor,
+    required this.borderColor,
+  });
+
+  @override
+  InlineSpan build() {
+    return WidgetSpan(
+      child: Container(
+        padding: const EdgeInsets.symmetric(horizontal: 8, vertical: 4),
+        decoration: BoxDecoration(
+          color: backgroundColor,
+          border: Border.all(color: borderColor, width: 1),
+          borderRadius: BorderRadius.circular(8),
+        ),
+        child: Column(
+          mainAxisSize: MainAxisSize.min,
+          spacing: 6,
+          children: [
+            Row(
+              spacing: 6,
+              children: [
+                Icon(Symbols.lightbulb, size: 16, color: foregroundColor),
+                Text(
+                  'SN-chan suggest you to ${type.split('_').reversed.join(' ')}',
+                ).fontSize(13).opacity(0.8),
+              ],
+            ).padding(top: 3, bottom: 4),
+            Flexible(
+              child: Text(
+                text,
+                style: TextStyle(
+                  color: foregroundColor,
+                  fontSize: 14,
+                  fontWeight: FontWeight.w500,
+                ),
+              ),
+            ),
+          ],
+        ),
+      ),
+    );
+  }
+}