feat: 接入起卦后端流程并完善积分扣减链路
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qzl
@@ -0,0 +1,230 @@
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import 'dart:async';
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import 'dart:convert';
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import 'package:dio/dio.dart';
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import '../../../../core/logging/logger.dart';
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import '../../../../core/network/api_problem.dart';
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import '../../../../data/network/api_client.dart';
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import '../models/divination_backend_models.dart';
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import '../models/divination_params.dart';
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class DivinationApi {
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const DivinationApi({required ApiClient apiClient}) : _apiClient = apiClient;
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final ApiClient _apiClient;
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static final Logger _logger = getLogger('features.divination.api');
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Future<PointsBalanceData> getPointsBalance() async {
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final json = await _apiClient.getJson('/api/v1/points/balance');
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return PointsBalanceData.fromJson(json);
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}
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Future<RunAcceptedData> enqueueRun({
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required DivinationParams params,
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required List<YaoType> yaoStates,
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required String threadId,
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required String runId,
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}) async {
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final payload = buildDivinationRunPayload(
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params: params,
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yaoStates: yaoStates,
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threadId: threadId,
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runId: runId,
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clientNow: DateTime.now(),
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);
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final json = await _apiClient.postJson('/api/v1/agent/runs', data: payload);
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return RunAcceptedData.fromJson(json);
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}
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Stream<Map<String, dynamic>> streamEvents({
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required String threadId,
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required String runId,
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}) async* {
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Response<ResponseBody> response;
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try {
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response = await _apiClient.rawDio.get<ResponseBody>(
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'/api/v1/agent/runs/$threadId/events',
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queryParameters: <String, dynamic>{'runId': runId},
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options: Options(responseType: ResponseType.stream),
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);
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} on DioException catch (error, stackTrace) {
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_logger.error(
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message: 'Failed to open SSE stream for divination run',
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error: error,
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stackTrace: stackTrace,
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extra: <String, dynamic>{'threadId': threadId, 'runId': runId},
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);
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throw _mapProblem(error);
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}
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final body = response.data;
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if (body == null) {
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return;
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}
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String buffer = '';
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try {
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await for (final textChunk in utf8.decoder.bind(body.stream)) {
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buffer += textChunk.replaceAll('\r\n', '\n');
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while (true) {
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final splitAt = buffer.indexOf('\n\n');
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if (splitAt < 0) {
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break;
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}
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final frame = buffer.substring(0, splitAt);
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buffer = buffer.substring(splitAt + 2);
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final event = _parseSseFrame(frame);
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if (event != null) {
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yield event;
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}
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}
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}
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} on FormatException catch (error, stackTrace) {
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_logger.error(
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message: 'Failed to decode SSE stream chunk',
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error: error,
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stackTrace: stackTrace,
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extra: <String, dynamic>{
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'threadId': threadId,
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'runId': runId,
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'bufferLength': buffer.length,
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},
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);
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throw ApiProblem(
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status: 502,
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title: 'SSE parse error',
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detail: error.message,
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);
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}
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if (buffer.trim().isNotEmpty) {
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final event = _parseSseFrame(buffer);
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if (event != null) {
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yield event;
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}
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}
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}
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ApiProblem _mapProblem(DioException error) {
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final status = error.response?.statusCode ?? 500;
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final data = error.response?.data;
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if (data is Map<String, dynamic>) {
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return ApiProblem(
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status: status,
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title: (data['title'] as String?) ?? 'Request failed',
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detail: (data['detail'] as String?) ?? '',
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code: data['code'] as String?,
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);
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}
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return ApiProblem(
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status: status,
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title: 'Network error',
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detail: error.message ?? 'Request failed',
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);
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}
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Map<String, dynamic>? _parseSseFrame(String frame) {
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if (frame.startsWith(':')) {
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return null;
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}
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final lines = frame.split('\n');
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String eventType = '';
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final dataLines = <String>[];
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for (final raw in lines) {
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final line = raw.trimRight();
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if (line.startsWith('event:')) {
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eventType = line.substring(6).trim();
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continue;
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}
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if (line.startsWith('data:')) {
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dataLines.add(line.substring(5).trimLeft());
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}
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}
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if (dataLines.isEmpty) {
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return null;
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}
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final dataText = dataLines.join('\n');
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if (dataText.trim().isEmpty) {
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return null;
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}
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final decoded = jsonDecode(dataText);
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if (decoded is! Map<String, dynamic>) {
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return null;
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}
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if (!decoded.containsKey('type') && eventType.isNotEmpty) {
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decoded['type'] = eventType;
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}
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return decoded;
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}
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}
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Map<String, dynamic> buildDivinationRunPayload({
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required DivinationParams params,
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required List<YaoType> yaoStates,
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required String threadId,
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required String runId,
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required DateTime clientNow,
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}) {
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if (yaoStates.length != 6) {
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throw ArgumentError('yaoStates must contain exactly 6 items');
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}
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return <String, dynamic>{
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'threadId': threadId,
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'runId': runId,
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'state': <String, dynamic>{},
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'messages': [
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{'id': 'msg_${runId}_user_0', 'role': 'user', 'content': params.question},
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],
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'tools': const <Map<String, dynamic>>[],
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'context': const <Map<String, dynamic>>[],
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'forwardedProps': {
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'runtime_mode': 'chat',
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'client_time': {
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'device_timezone': 'Asia/Shanghai',
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'client_now_iso': _toRfc3339Utc(clientNow),
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'client_epoch_ms': clientNow.millisecondsSinceEpoch,
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},
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'divinationPayload': {
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'divinationMethod': params.method == DivinationMethod.manual
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? '手动起卦'
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: '自动起卦',
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'questionType': _questionTypeToText(params.questionType),
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'question': params.question,
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'divinationTimeIso': _toRfc3339Utc(params.divinationTime),
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'yaoLines': yaoStates.map(_yaoTypeToText).toList(growable: false),
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},
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},
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};
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}
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String _toRfc3339Utc(DateTime value) {
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return value.toUtc().toIso8601String();
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}
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String _questionTypeToText(QuestionType type) {
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return switch (type) {
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QuestionType.career => '事业',
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QuestionType.love => '情感',
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QuestionType.wealth => '财富',
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QuestionType.fortune => '运势',
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QuestionType.dream => '解梦',
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QuestionType.health => '健康',
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QuestionType.study => '学业',
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QuestionType.search => '寻物',
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QuestionType.other => '其他',
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};
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}
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String _yaoTypeToText(YaoType type) {
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return switch (type) {
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YaoType.youngYang => '少阳',
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YaoType.youngYin => '少阴',
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YaoType.oldYang => '老阳',
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YaoType.oldYin => '老阴',
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YaoType.undetermined => throw ArgumentError(
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'yaoStates contains undetermined line',
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),
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};
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}
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