refactor: 重构聊天数据层至core并简化首页UI

2026-03-29 21:46:26 +08:00
parent 4db9a13bfe
commit f126d7a547
18 changed files with 568 additions and 328 deletions
@@ -0,0 +1,142 @@
+import 'dart:typed_data';
+
+import 'package:dio/dio.dart';
+import 'package:social_app/core/chat/chat_api.dart';
+import 'package:social_app/data/network/i_api_client.dart';
+
+class ChatApiImpl implements ChatApi {
+  ChatApiImpl(this._apiClient);
+
+  final IApiClient _apiClient;
+
+  @override
+  Future<Map<String, dynamic>> createRun(Map<String, dynamic> runInput) async {
+    final response = await _apiClient.post<Map<String, dynamic>>(
+      '/api/v1/agent/runs',
+      data: runInput,
+    );
+    final payload = response.data;
+    if (payload is! Map<String, dynamic>) {
+      throw StateError('Invalid /agent/runs response');
+    }
+    return payload;
+  }
+
+  @override
+  Future<Stream<String>> streamRunEvents(
+    String threadId, {
+    String? lastEventId,
+  }) {
+    final headers = <String, String>{'Accept': 'text/event-stream'};
+    if (lastEventId != null && lastEventId.isNotEmpty) {
+      headers['Last-Event-ID'] = lastEventId;
+    }
+    return _apiClient.getSseLines(
+      '/api/v1/agent/runs/$threadId/events',
+      headers: headers,
+    );
+  }
+
+  @override
+  Future<Map<String, dynamic>> fetchHistory({
+    String? threadId,
+    DateTime? beforeDate,
+  }) async {
+    final path = _buildHistoryPath(threadId: threadId, beforeDate: beforeDate);
+    final response = await _apiClient.get<Map<String, dynamic>>(path);
+    final payload = response.data;
+    if (payload is! Map<String, dynamic>) {
+      throw StateError('Invalid /agent/history response');
+    }
+    return payload;
+  }
+
+  @override
+  Future<Map<String, dynamic>> uploadAttachment({
+    required String threadId,
+    required String filename,
+    required String mimeType,
+    required Uint8List bytes,
+  }) async {
+    final formData = FormData.fromMap({
+      'threadId': threadId,
+      'file': MultipartFile.fromBytes(
+        bytes,
+        filename: filename,
+        contentType: DioMediaType.parse(mimeType),
+      ),
+    });
+    final response = await _apiClient.post<Map<String, dynamic>>(
+      '/api/v1/agent/attachments',
+      data: formData,
+    );
+    final payload = response.data;
+    if (payload is! Map<String, dynamic>) {
+      throw StateError('Invalid /agent/attachments response');
+    }
+    return payload;
+  }
+
+  @override
+  Future<Uint8List> fetchAttachmentPreview(String previewPath) async {
+    final response = await _apiClient.get<List<int>>(
+      previewPath,
+      options: Options(responseType: ResponseType.bytes),
+    );
+    final payload = response.data;
+    if (payload is! List<int>) {
+      throw StateError('Invalid attachment payload');
+    }
+    return Uint8List.fromList(payload);
+  }
+
+  @override
+  Future<String> transcribeAudio(String filePath) async {
+    final formData = FormData.fromMap({
+      'audio': await MultipartFile.fromFile(
+        filePath,
+        filename: 'recording.wav',
+        contentType: DioMediaType('audio', 'wav'),
+      ),
+    });
+    final response = await _apiClient.post<Map<String, dynamic>>(
+      '/api/v1/agent/transcribe',
+      data: formData,
+    );
+    final payload = response.data;
+    if (payload is! Map<String, dynamic>) {
+      throw StateError('Invalid /agent/transcribe response');
+    }
+    final transcript = payload['transcript'];
+    if (transcript is! String) {
+      throw StateError('Missing transcript in /agent/transcribe response');
+    }
+    return transcript;
+  }
+
+  @override
+  Future<void> cancelRun({
+    required String threadId,
+    required String runId,
+  }) async {
+    final encodedRunId = Uri.encodeQueryComponent(runId);
+    await _apiClient.post<Map<String, dynamic>>(
+      '/api/v1/agent/runs/$threadId/cancel?runId=$encodedRunId',
+    );
+  }
+
+  static String _buildHistoryPath({String? threadId, DateTime? beforeDate}) {
+    final query = <String>[];
+    if (threadId != null && threadId.isNotEmpty) {
+      query.add('threadId=${Uri.encodeQueryComponent(threadId)}');
+    }
+    if (beforeDate != null) {
+      final day = DateTime(beforeDate.year, beforeDate.month, beforeDate.day);
+      query.add('before=${day.toIso8601String().substring(0, 10)}');
+    }
+    if (query.isEmpty) {
+      return '/api/v1/agent/history';
+    }
+    return '/api/v1/agent/history?${query.join('&')}';
+  }
+}