调整聊天接口

lib/home_page.dart

-import 'package:allen/openai_service.dart';
 import 'package:allen/pallete.dart';
 import 'package:animate_do/animate_do.dart';
 import 'package:flutter/material.dart';
@@ -9,9 +8,10 @@ import 'package:flutter/foundation.dart' show kIsWeb;
 import 'package:uuid/uuid.dart';
 import 'models/conversation.dart';
 import 'services/storage_service.dart';
-import 'package:shared_preferences/shared_preferences.dart';
+import 'services/chat_service.dart';
 import 'models/chat_message.dart';
 import 'models/user.dart';
+import 'package:shared_preferences/shared_preferences.dart';
 
 class HomePage extends StatefulWidget {
   const HomePage({super.key});
@@ -37,6 +37,7 @@ class _HomePageState extends State<HomePage> {
   bool _isListeningPressed = false;
   String _currentVoiceText = '';
   late StorageService _storageService;
+  late SharedPreferences _prefs;
   late Conversation _currentConversation;
   List<Conversation> _conversations = [];
 
@@ -49,8 +50,8 @@ class _HomePageState extends State<HomePage> {
   }
 
   Future<void> _initializeStorage() async {
-    final prefs = await SharedPreferences.getInstance();
-    _storageService = StorageService(prefs);
+    _prefs = await SharedPreferences.getInstance();
+    _storageService = StorageService(_prefs);
     _conversations = await _storageService.getConversations();
     if (_conversations.isEmpty) {
       _createNewConversation();
@@ -120,6 +121,10 @@ class _HomePageState extends State<HomePage> {
   Future<void> systemSpeak(String content) async {
     try {
       if (kIsWeb) {
+        // 设置语速
+        await flutterTts.setSpeechRate(3);
+        // 音调
+        await flutterTts.setPitch(0.8);
         await flutterTts.speak(content);
       } else {
         await flutterTts.setSharedInstance(true);

lib/openai_service.dart

-import 'dart:convert';
-import 'package:http/http.dart' as http;
-
-class OpenAIService {
-  final String baseUrl =
-      'https://portal.apps.iytcloud.com/console/api/openapi/chat';
-  final String apiKey = 'sk-VEug2XmXEmHyFLtSbRBagBgrwMVhCXks';
-  final String appKey = 'app-UtEKZmmxId1HIjQP';
-  String? conversationId;
-
-  Stream<String> chatGPTAPI(String message) async* {
-    final client = http.Client();
-    var buffer = StringBuffer();
-
-    try {
-      final request = http.Request('POST', Uri.parse(baseUrl));
-      request.headers.addAll({
-        'Content-Type': 'application/json',
-        'Authorization': 'Bearer $apiKey',
-      });
-
-      Map<String, dynamic> requestBody = {
-        'app_key': appKey,
-        'query': message,
-        'stream': true,
-      };
-
-      if (conversationId != null) {
-        requestBody['conversation_id'] = conversationId as String;
-      }
-
-      request.body = jsonEncode(requestBody);
-
-      final streamedResponse = await client.send(request);
-
-      if (streamedResponse.statusCode == 200) {
-        DateTime startTime = DateTime.now();
-
-        // 直接处理字节流
-        await for (var bytes in streamedResponse.stream) {
-          if (DateTime.now().difference(startTime).inMinutes >= 2) {
-            throw Exception('请求超时，请稍后重试');
-          }
-
-          // 将字节转换为字符串并添加到缓冲区
-          String chunk = utf8.decode(bytes);
-          buffer.write(chunk);
-
-          // 处理缓冲区中的每一行
-          while (buffer.toString().contains('\n')) {
-            int newlineIndex = buffer.toString().indexOf('\n');
-            String line = buffer.toString().substring(0, newlineIndex).trim();
-            buffer =
-                StringBuffer(buffer.toString().substring(newlineIndex + 1));
-
-            if (line.startsWith('data: ')) {
-              try {
-                final jsonStr = line.substring(6);
-                final Map<String, dynamic> data = jsonDecode(jsonStr);
-
-                if (data['conversation_id'] != null) {
-                  conversationId = data['conversation_id'] as String;
-                }
-
-                if (data['event'] == 'message' && data['answer'] != null) {
-                  yield data['answer'] as String;
-                } else if (data['event'] == 'message_end') {
-                  return;
-                }
-              } catch (e) {
-                print('JSON解析错误: $e');
-                continue;
-              }
-            }
-          }
-        }
-      } else {
-        throw Exception('请求失败，状态码: ${streamedResponse.statusCode}');
-      }
-    } catch (e) {
-      throw Exception(e.toString());
-    } finally {
-      client.close();
-    }
-  }
-
-  void clearConversation() {
-    conversationId = null;
-  }
-}

lib/services/chat_service.dart

 import 'dart:convert';
 import 'package:http/http.dart' as http;
 
-class ChatService {
-  static const String baseUrl =
-      'https://portal.apps.iytcloud.com/console/api/openapi/chat';
-
-  Stream<String> streamChat(String query) async* {
-    final response = await http.post(
-      Uri.parse(baseUrl),
-      headers: {
-        'Accept': '*/*',
-        'Accept-Language': 'zh-CN,zh;q=0.9',
-        'Authorization': 'Bearer sk-VEug2XmXEmHyFLtSbRBagBgrwMVhCXks',
-        'Content-Type': 'application/json; charset=utf-8',
-      },
-      body: jsonEncode({
-        'app_key': 'app-UtEKZmmxId1HIjQP',
-        'query': query,
+class OpenAIService {
+  final String baseUrl =
+      'https://knowledge-web.apps.iytcloud.com/console/api/openapi/chat';
+  final String apiKey = 'sk-OVjS7VE9mT68Uvg7kSFoMnbU6EU836FO';
+  final String appKey = 'app-FRP2s2wSx01rsE67';
+  String? conversationId;
+
+  Stream<String> chatGPTAPI(String message) async* {
+    final client = http.Client();
+    var buffer = StringBuffer();
+
+    try {
+      final request = http.Request('POST', Uri.parse(baseUrl));
+      request.headers.addAll({
+        'Content-Type': 'application/json',
+        'Authorization': 'Bearer $apiKey',
+      });
+
+      Map<String, dynamic> requestBody = {
+        'app_key': appKey,
+        'query': message,
         'stream': true,
-        'conversation_id': 'f2a71524-53cd-4cd8-99be-abb6598b52db',
-      }),
-    );
+      };
+
+      if (conversationId != null) {
+        requestBody['conversation_id'] = conversationId as String;
+      }
+
+      request.body = jsonEncode(requestBody);
+
+      final streamedResponse = await client.send(request);
+
+      if (streamedResponse.statusCode == 200) {
+        DateTime startTime = DateTime.now();
+
+        // 直接处理字节流
+        await for (var bytes in streamedResponse.stream) {
+          if (DateTime.now().difference(startTime).inMinutes >= 2) {
+            throw Exception('请求超时，请稍后重试');
+          }
 
-    final stream = response.body.split('\n');
+          // 将字节转换为字符串并添加到缓冲区
+          String chunk = utf8.decode(bytes);
+          buffer.write(chunk);
+
+          // 处理缓冲区中的每一行
+          while (buffer.toString().contains('\n')) {
+            int newlineIndex = buffer.toString().indexOf('\n');
+            String line = buffer.toString().substring(0, newlineIndex).trim();
+            buffer =
+                StringBuffer(buffer.toString().substring(newlineIndex + 1));
 
-    for (var line in stream) {
             if (line.startsWith('data: ')) {
-        final jsonStr = line.substring(6);
-        if (jsonStr.isNotEmpty) {
               try {
-            final data = jsonDecode(jsonStr);
+                final jsonStr = line.substring(6);
+                final Map<String, dynamic> data = jsonDecode(jsonStr);
+
+                if (data['conversation_id'] != null) {
+                  conversationId = data['conversation_id'] as String;
+                }
+
                 if (data['event'] == 'message' && data['answer'] != null) {
-              yield data['answer'];
+                  yield data['answer'] as String;
+                } else if (data['event'] == 'message_end') {
+                  return;
                 }
               } catch (e) {
-            print('解析错误: $e');
+                print('JSON解析错误: $e');
+                continue;
               }
             }
           }
         }
+      } else {
+        throw Exception('请求失败，状态码: ${streamedResponse.statusCode}');
+      }
+    } catch (e) {
+      throw Exception(e.toString());
+    } finally {
+      client.close();
+    }
+  }
+
+  void clearConversation() {
+    conversationId = null;
   }
 }