多轮对话记忆

src/pages/ChatPage.tsx

@@ -43,6 +43,23 @@ import { searchMemory, addMemory } from "@/utils/mem0Client";
 import { Switch } from "@/components/ui/switch";
 import { Label } from "@/components/ui/label";
 
+const GUEST_ID_KEY = 'qianjiang_guest_uuid';
+let _guestIdMemoryFallback: string | null = null;
+let _activeConvId: string | null = null; // 模块级变量，绕过 React 闭包
+function getOrCreateGuestId(): string {
+  try {
+    const existing = localStorage.getItem(GUEST_ID_KEY);
+    if (existing) return existing;
+    const id = crypto.randomUUID();
+    localStorage.setItem(GUEST_ID_KEY, id);
+    return id;
+  } catch {
+    // 无痕浏览等场景下 localStorage 不可用，用内存兜底保证同一会话内 ID 不变
+    if (!_guestIdMemoryFallback) _guestIdMemoryFallback = crypto.randomUUID();
+    return _guestIdMemoryFallback;
+  }
+}
+
 export default function ChatPage() {
   const location = useLocation();
   const { user } = useAuth();
@@ -66,7 +83,9 @@ export default function ChatPage() {
 
   // ✅ 用 ref 同步缓存 conversation_id 映射，消除 React state 异步竞态
   const difyConvIdMapRef = useRef<Record<string, string>>({});
-  
+  // ✅ 用 ref 保持最新 activeConversationId，避免 simulateAIResponse 闭包过期
+  const activeConvIdRef = useRef<string | null>(null);
+  useEffect(() => { activeConvIdRef.current = activeConversationId; }, [activeConversationId]);
   // Convert conversations for sidebar (保留 dify_conversation_id)
   const conversations = rawConversations.map(conv => ({
     id: conv.id,
@@ -283,9 +302,11 @@ export default function ChatPage() {
   // AI响应处理 - 三明治架构：先查记忆 -> 问AI -> 存记忆
   const simulateAIResponse = useCallback(async (userMessage: string) => {
     setIsAiTyping(true);
+    console.trace('🔍 simulateAIResponse 入口 _activeConvId=', _activeConvId);
+    const activeConversationId = _activeConvId;
     try {
       // ========== Step 1: Pre-flight - 查询 Mem0 记忆 ==========
-      const userId = user?.id || 'anonymous';
+      const userId = user?.id || getOrCreateGuestId();
       console.log('🧠 [三明治] Step 1: 查询 Mem0 记忆...');
       const userContext = await searchMemory(userId, userMessage);
       console.log('🧠 [三明治] 记忆上下文:', userContext ? `${userContext.length} chars` : '(empty)');
@@ -322,7 +343,7 @@ export default function ChatPage() {
 
       // ========== Step 2: 流式调用 AI ─────────
       if (useStream) {
-        console.log('🚀 [STREAM] 使用流式输出模式');
+        console.log('🚀 [STREAM] 使用流式输出模式, activeConversationId=', activeConversationId, 'ref=', activeConvIdRef.current);
 
         const streamMessageId = `ai_stream_${Date.now()}`;
         setStreamingMessageId(streamMessageId);
@@ -462,8 +483,9 @@ export default function ChatPage() {
         await streamDifyChat(
           {
             message: userMessage,
-            userId: user?.id || 'anonymous',
+            userId: user?.id || getOrCreateGuestId(),
             conversationId: conversationIdFromDb,
+            localConversationId: activeConversationId,  // ★ 传入本地会话ID，Edge Function 用于加载历史
             userContext: userContext,
             catalog
           },
@@ -474,11 +496,12 @@ export default function ChatPage() {
       }
 
       // ========== 非流式模式 ─────────
-      console.log('📤 Step 2: 非流式调用');
+      console.log('📤 Step 2: 非流式调用, activeConversationId=', activeConversationId, 'ref=', activeConvIdRef.current);
       const { data: intentCard, traceId, status, error: callError } = await callCozeEdge({
         message: userMessage,
-        userId: user?.id || 'anonymous',
+        userId: user?.id || getOrCreateGuestId(),
         conversationId: conversationIdFromDb,
+        localConversationId: activeConversationId,
         userContext: userContext,
         product: {
           id: firstProduct.id,
@@ -886,6 +909,20 @@ export default function ChatPage() {
 
   // 处理发送消息
   const handleSendMessage = useCallback(async (content: string) => {
+    // 兜底：如果没有活跃对话，自动创建一个（用局部变量避免闭包过期）
+    let currentConvId = activeConversationId;
+    if (!currentConvId) {
+      const newConv = await createNewConversation('新对话');
+      if (!newConv?.id) {
+        toast.error('创建对话失败');
+        return;
+      }
+      currentConvId = newConv.id;
+      activeConvIdRef.current = newConv.id;
+      _activeConvId = newConv.id; // ★ 模块级变量，彻底绕过闭包
+    }
+    _activeConvId = currentConvId; // 已有对话也同步
+
     const userMessage: ChatMessageType = {
       id: `user_${Date.now()}`,
       content,
@@ -899,12 +936,9 @@ export default function ChatPage() {
 
     setMessages(prev => [...prev, userMessage]);
 
-    if (activeConversationId) {
-      await saveMessageLocal(userMessage, activeConversationId);
-    }
-
+    await saveMessageLocal(userMessage, currentConvId);
     await simulateAIResponse(content);
-  }, [simulateAIResponse, activeConversationId, saveMessageLocal]);
+  }, [simulateAIResponse, activeConversationId, saveMessageLocal, createNewConversation]);
 
   // 处理新建对话
   const handleNewConversation = useCallback(async (e?: React.MouseEvent) => {

src/pages/ShopPage.tsx

@@ -23,6 +23,23 @@ import { TypingIndicator } from "@/components/chat/TypingIndicator";
 import { useAuth } from "@/contexts/AuthContext";
 import { AIAgent, AI_AGENTS } from "@/types/agents";
 import { callCozeEdge } from "@/utils/cozeClient";
+
+// ─── 访客 ID + 会话 ID 模块级变量（绕过 React 闭包）───
+const GUEST_ID_KEY = 'qianjiang_guest_uuid';
+let _guestIdMemoryFallback: string | null = null;
+function getOrCreateGuestId(): string {
+  try {
+    const existing = localStorage.getItem(GUEST_ID_KEY);
+    if (existing) return existing;
+    const id = crypto.randomUUID();
+    localStorage.setItem(GUEST_ID_KEY, id);
+    return id;
+  } catch {
+    if (!_guestIdMemoryFallback) _guestIdMemoryFallback = crypto.randomUUID();
+    return _guestIdMemoryFallback;
+  }
+}
+let _activeConvId: string | null = null;
 import { ProductDetailDialog } from "@/components/chat/ProductDetailDialog";
 import { useCart } from "@/contexts/CartContext";
 import { CartSidebar } from "@/components/cart/CartSidebar";
@@ -180,6 +197,7 @@ export default function ShopPage() {
   const handleNewConversation = async () => {
     const newConv = await createNewConversation('商城对话');
     if (newConv) {
+      _activeConvId = newConv.id;
       setActiveConversationId(newConv.id);
       
       // Add welcome message
@@ -306,7 +324,9 @@ export default function ShopPage() {
   // AI response handler
   const simulateAIResponse = useCallback(async (userMessage: string) => {
     setIsAiTyping(true);
-    console.log('🔍 [Shop AI] simulateAIResponse start — products in state:', products.length, 'user:', user?.id || 'anonymous');
+    const activeConvId = _activeConvId;
+    const currentUserId = user?.id || getOrCreateGuestId();
+    console.log('🔍 [Shop AI] simulateAIResponse start — convId:', activeConvId, 'userId:', currentUserId);
     const streamMsgId = `ai_${Date.now()}`;
 
     // 先插入一个占位消息，后续流式更新
@@ -345,7 +365,8 @@ export default function ShopPage() {
       console.log('🔍 [Shop AI] About to call callCozeEdge — catalog size:', catalog.length);
       const { data: intentCard } = await callCozeEdge({
         message: userMessage,
-        userId: user?.id || 'anonymous',
+        userId: currentUserId,
+        localConversationId: activeConvId,
         product: currentProducts.length > 0 ? {
           id: currentProducts[0].id,
           title: currentProducts[0].name,
@@ -414,13 +435,13 @@ export default function ShopPage() {
           : msg
       ));
 
-      if (activeConversationId) {
+      if (activeConvId) {
         await saveMessage({
           content: aiContent,
           sender_type: "ai",
           message_type: messageType as DBMessage['message_type'],
           metadata: responseMetadata
-        }, activeConversationId);
+        }, activeConvId);
       }
     } catch (error) {
       console.error('AI回复失败:', error);
@@ -439,6 +460,15 @@ export default function ShopPage() {
     // 防止并发流式调用（如快速连点建议按钮）
     if (isAiTyping) return;
 
+    // 兜底：确保有活跃对话
+    let currentConvId = activeConversationId;
+    if (!currentConvId) {
+      await handleNewConversation();
+      currentConvId = _activeConvId;
+    } else {
+      _activeConvId = currentConvId;
+    }
+
     const userMessage: ChatMessageType = {
       id: `user_${Date.now()}`,
       content,
@@ -452,13 +482,13 @@ export default function ShopPage() {
 
     setMessages(prev => [...prev, userMessage]);
 
-    if (activeConversationId) {
+    if (currentConvId) {
       await saveMessage({
         content: userMessage.content,
         sender_type: userMessage.sender,
         message_type: userMessage.type as DBMessage['message_type'],
         metadata: userMessage.metadata
-      }, activeConversationId);
+      }, currentConvId);
     }
 
     await simulateAIResponse(content);

src/utils/cozeClient.ts

@@ -13,6 +13,7 @@ interface CozeRequestOptions {
   message: string;
   userId: string;
   conversationId?: string;
+  localConversationId?: string;   // 本地会话ID，Edge Function 用于加载历史
   userContext?: string;  // Mem0 记忆上下文
   product?: {
     id: string;
@@ -105,6 +106,7 @@ export async function callCozeEdge(
   const requestBody = {
     message: options.message,
     conversationId: options.conversationId || '',
+    localConversationId: options.localConversationId || '',
     inputs: {
       user_id: options.userId || 'guest',
       trace_id: traceId,

src/utils/difyStreamClient.ts

@@ -12,6 +12,7 @@ interface DifyStreamOptions {
   message: string;
   userId: string;
   conversationId?: string;
+  localConversationId?: string;   // ★ 本地 conversations 表的主键 UUID（用于加载历史）
   userContext?: string;
   catalog?: Array<{
     id: string;
@@ -41,6 +42,7 @@ export async function streamDifyChat(
   const requestBody = {
     message: options.message,
     conversationId: options.conversationId || '',
+    localConversationId: options.localConversationId || '',
     inputs: {
       user_id: options.userId || 'guest',
       trace_id: traceId,