397 lines
14 KiB
Dart
397 lines
14 KiB
Dart
import "dart:convert";
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import "dart:math" as math;
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import "package:dio/dio.dart";
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import "package:easy_localization/easy_localization.dart";
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import "package:flutter/material.dart";
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import "package:flutter_hooks/flutter_hooks.dart";
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import "package:gap/gap.dart";
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import "package:riverpod_annotation/riverpod_annotation.dart";
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import "package:hooks_riverpod/hooks_riverpod.dart";
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import "package:island/models/thought.dart";
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import "package:island/pods/network.dart";
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import "package:island/pods/userinfo.dart";
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import "package:island/widgets/alert.dart";
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import "package:island/widgets/app_scaffold.dart";
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import "package:island/widgets/response.dart";
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import "package:island/widgets/thought/thought_sequence_list.dart";
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import "package:island/widgets/thought/thought_shared.dart";
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import "package:material_symbols_icons/material_symbols_icons.dart";
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import "package:super_sliver_list/super_sliver_list.dart";
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import "package:collection/collection.dart";
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part 'think.g.dart';
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@riverpod
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Future<List<SnThinkingThought>> thoughtSequence(
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Ref ref,
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String sequenceId,
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) async {
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final apiClient = ref.watch(apiClientProvider);
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final response = await apiClient.get(
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'/insight/thought/sequences/$sequenceId',
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);
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return (response.data as List)
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.map((e) => SnThinkingThought.fromJson(e))
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.toList();
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}
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class ThoughtScreen extends HookConsumerWidget {
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const ThoughtScreen({super.key});
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@override
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Widget build(BuildContext context, WidgetRef ref) {
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final selectedSequenceId = useState<String?>(null);
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final thoughts =
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selectedSequenceId.value != null
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? ref.watch(thoughtSequenceProvider(selectedSequenceId.value!))
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: const AsyncValue<List<SnThinkingThought>>.data([]);
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final localThoughts = useState<List<SnThinkingThought>>([]);
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final currentTopic = useState<String?>('aiThought'.tr());
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final messageController = useTextEditingController();
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final scrollController = useScrollController();
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final isStreaming = useState(false);
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final streamingText = useState<String>('');
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final functionCalls = useState<List<String>>([]);
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final reasoningChunks = useState<List<String>>([]);
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final listController = useMemoized(() => ListController(), []);
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// Scroll animation notifiers
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final bottomGradientNotifier = useState(ValueNotifier<double>(0.0));
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// Update local thoughts when provider data changes
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useEffect(() {
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thoughts.whenData((data) {
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// Server returns messages in DESC order (newest first), keep as-is for UI
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localThoughts.value = data;
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// Update topic from the first thought's sequence
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if (data.isNotEmpty && data.first.sequence?.topic != null) {
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currentTopic.value = data.first.sequence!.topic;
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} else {
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currentTopic.value = 'aiThought'.tr();
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}
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});
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return null;
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}, [thoughts]);
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// Scroll to bottom when thoughts change or streaming state changes
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useEffect(() {
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if (localThoughts.value.isNotEmpty || isStreaming.value) {
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WidgetsBinding.instance.addPostFrameCallback((_) {
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scrollController.animateTo(
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0,
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duration: const Duration(milliseconds: 300),
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curve: Curves.easeOut,
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);
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});
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}
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return null;
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}, [localThoughts.value.length, isStreaming.value]);
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// Add scroll listener for gradient animations
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useEffect(() {
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void onScroll() {
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// Update gradient animations
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final pixels = scrollController.position.pixels;
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// Bottom gradient: appears when not at bottom (pixels > 0)
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bottomGradientNotifier.value.value = (pixels / 500.0).clamp(0.0, 1.0);
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}
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scrollController.addListener(onScroll);
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return () => scrollController.removeListener(onScroll);
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}, [scrollController]);
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void sendMessage() async {
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if (messageController.text.trim().isEmpty) return;
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final userMessage = messageController.text.trim();
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// Add user message to local thoughts
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final userInfo = ref.read(userInfoProvider);
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final now = DateTime.now();
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final userThought = SnThinkingThought(
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id: 'user-${DateTime.now().millisecondsSinceEpoch}',
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content: userMessage,
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files: [],
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role: ThinkingThoughtRole.user,
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sequenceId: selectedSequenceId.value ?? '',
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createdAt: now,
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updatedAt: now,
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sequence:
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selectedSequenceId.value != null
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? thoughts.value?.firstOrNull?.sequence ??
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SnThinkingSequence(
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id: selectedSequenceId.value!,
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accountId: '',
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createdAt: now,
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updatedAt: now,
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)
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: SnThinkingSequence(
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id: '',
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accountId: userInfo.value!.id,
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createdAt: now,
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updatedAt: now,
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),
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);
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localThoughts.value = [userThought, ...localThoughts.value];
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final request = StreamThinkingRequest(
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userMessage: userMessage,
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sequenceId: selectedSequenceId.value,
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accpetProposals: ['post_create'],
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attachedMessages: [], // Message datas
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attachedPosts: [], // ID list for posts
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);
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try {
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isStreaming.value = true;
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streamingText.value = '';
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functionCalls.value = [];
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reasoningChunks.value = [];
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final apiClient = ref.read(apiClientProvider);
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final response = await apiClient.post(
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'/insight/thought',
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data: request.toJson(),
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options: Options(
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responseType: ResponseType.stream,
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sendTimeout: Duration(minutes: 1),
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receiveTimeout: Duration(minutes: 1),
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),
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);
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final stream = response.data.stream;
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final lineBuffer = StringBuffer();
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stream.listen(
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(data) {
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final chunk = utf8.decode(data);
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lineBuffer.write(chunk);
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final lines = lineBuffer.toString().split('\n');
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lineBuffer.clear();
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lineBuffer.write(lines.last); // keep incomplete line
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for (final line in lines.sublist(0, lines.length - 1)) {
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if (line.trim().isEmpty) continue;
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try {
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if (line.startsWith('data: ')) {
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final jsonStr = line.substring(6);
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final event = jsonDecode(jsonStr);
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final type = event['type'];
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final eventData = event['data'];
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if (type == 'text') {
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streamingText.value += eventData;
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} else if (type == 'function_call') {
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functionCalls.value = [
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...functionCalls.value,
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JsonEncoder.withIndent(' ').convert(eventData),
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];
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} else if (type == 'reasoning') {
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reasoningChunks.value = [
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...reasoningChunks.value,
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eventData,
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];
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}
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} else if (line.startsWith('topic: ')) {
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final jsonStr = line.substring(7);
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final event = jsonDecode(jsonStr);
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currentTopic.value = event['data'];
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} else if (line.startsWith('thought: ')) {
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final jsonStr = line.substring(9);
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final event = jsonDecode(jsonStr);
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final aiThought = SnThinkingThought.fromJson(event['data']);
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localThoughts.value = [aiThought, ...localThoughts.value];
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if (selectedSequenceId.value == null &&
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aiThought.sequenceId.isNotEmpty) {
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selectedSequenceId.value = aiThought.sequenceId;
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}
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isStreaming.value = false;
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}
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} catch (e) {
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// Ignore parsing errors for individual events
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}
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}
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},
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onDone: () {
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if (isStreaming.value) {
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isStreaming.value = false;
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showErrorAlert('thoughtParseError'.tr());
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}
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},
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onError: (error) {
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isStreaming.value = false;
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if (error is DioException && error.response?.data is ResponseBody) {
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showErrorAlert('toughtParseError'.tr());
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} else {
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showErrorAlert(error);
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}
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},
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);
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messageController.clear();
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FocusManager.instance.primaryFocus?.unfocus();
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} catch (error) {
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isStreaming.value = false;
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showErrorAlert(error);
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}
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}
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return AppScaffold(
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isNoBackground: false,
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appBar: AppBar(
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title: Text(currentTopic.value ?? 'aiThought'.tr()),
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actions: [
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IconButton(
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icon: const Icon(Symbols.history),
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onPressed: () {
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// Show sequence selector
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showModalBottomSheet(
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context: context,
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builder:
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(context) => ThoughtSequenceSelector(
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onSequenceSelected: (sequenceId) {
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selectedSequenceId.value = sequenceId;
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},
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),
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);
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},
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),
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if (localThoughts.value.isNotEmpty &&
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!isStreaming.value &&
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localThoughts.value.last.role == ThinkingThoughtRole.assistant)
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IconButton(
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icon: const Icon(Symbols.add),
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tooltip: 'thoughtNewConversation'.tr(),
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onPressed: () {
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// Clear current conversation and start new one
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selectedSequenceId.value = null;
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localThoughts.value = [];
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currentTopic.value = 'aiThought'.tr();
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messageController.clear();
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},
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),
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const Gap(8),
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],
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),
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body: Stack(
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children: [
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// Thoughts list
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Center(
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child: Container(
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constraints: BoxConstraints(maxWidth: 640),
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child: Column(
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children: [
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Expanded(
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child: thoughts.when(
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data:
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(thoughtList) => SuperListView.builder(
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listController: listController,
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controller: scrollController,
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padding: EdgeInsets.only(
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top: 16,
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bottom:
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MediaQuery.of(context).padding.bottom +
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80, // Leave space for thought input
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),
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reverse: true,
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itemCount:
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localThoughts.value.length +
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(isStreaming.value ? 1 : 0),
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itemBuilder: (context, index) {
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if (isStreaming.value && index == 0) {
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return ThoughtItem(
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isStreaming: true,
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streamingText: streamingText.value,
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reasoningChunks: reasoningChunks.value,
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streamingFunctionCalls: functionCalls.value,
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);
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}
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final thoughtIndex =
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isStreaming.value ? index - 1 : index;
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final thought = localThoughts.value[thoughtIndex];
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return ThoughtItem(
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thought: thought,
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thoughtIndex: thoughtIndex,
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);
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},
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),
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loading:
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() =>
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const Center(child: CircularProgressIndicator()),
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error:
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(error, _) => ResponseErrorWidget(
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error: error,
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onRetry:
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() =>
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selectedSequenceId.value != null
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? ref.invalidate(
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thoughtSequenceProvider(
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selectedSequenceId.value!,
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),
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)
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: null,
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),
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),
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),
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],
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),
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),
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),
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// Bottom gradient - appears when scrolling towards newer thoughts (behind thought input)
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AnimatedBuilder(
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animation: bottomGradientNotifier.value,
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builder:
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(context, child) => Positioned(
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left: 0,
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right: 0,
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bottom: 0,
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child: Opacity(
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opacity: bottomGradientNotifier.value.value,
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child: Container(
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height: math.min(
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MediaQuery.of(context).size.height * 0.1,
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128,
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),
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decoration: BoxDecoration(
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gradient: LinearGradient(
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begin: Alignment.bottomCenter,
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end: Alignment.topCenter,
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colors: [
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Theme.of(
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context,
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).colorScheme.surfaceContainer.withOpacity(0.8),
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Theme.of(
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context,
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).colorScheme.surfaceContainer.withOpacity(0.0),
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],
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),
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),
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),
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),
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),
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),
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// Thought Input positioned above gradient (higher z-index)
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Positioned(
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left: 0,
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right: 0,
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bottom: 0, // At the very bottom, above gradient
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child: Center(
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child: Container(
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constraints: BoxConstraints(maxWidth: 640),
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child: ThoughtInput(
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messageController: messageController,
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isStreaming: isStreaming.value,
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onSend: sendMessage,
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),
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),
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),
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),
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],
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),
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);
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}
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}
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