From 421b2827d6b49e8768f30714310e16c23ec648a4 Mon Sep 17 00:00:00 2001
From: xilesun <2013xile@gmail.com>
Date: Fri, 11 Apr 2025 13:08:34 +0800
Subject: [PATCH] chore: update

---
 .../ai-employees/AIEmployeesProvider.tsx      |   8 +-
 .../ai-employees/chatbox/AIEmployeeHeader.tsx |  39 ++-
 .../client/ai-employees/chatbox/ChatBox.tsx   |  54 ++--
 .../ai-employees/chatbox/ChatBoxContext.tsx   | 144 ++--------
 .../chatbox/ChatConversationsProvider.tsx     |  49 ++++
 .../chatbox/ChatMessagesProvider.tsx          | 248 ++++++++++++++++++
 .../ai-employees/chatbox/Conversations.tsx    |  31 +--
 .../ai-employees/chatbox/MessageRenderer.tsx  |  69 +++++
 .../client/ai-employees/chatbox/Messages.tsx  |  49 +++-
 .../client/ai-employees/chatbox/Sender.tsx    |   8 +-
 .../ai-employees/chatbox/SenderFooter.tsx     |   6 +-
 .../ai-employees/chatbox/useChatMessages.ts   | 194 --------------
 .../ai-employees/chatbox/useChatRequest.tsx   |   9 +
 .../chatbox/useLoadMoreObserver.ts            |  49 ++++
 .../ai-employees/manager/ProfileSettings.tsx  |   3 +
 .../src/client/ai-employees/types.ts          |  12 +-
 .../server/collections/ai-conversations.ts    |   9 +-
 .../src/server/resource/aiConversations.ts    |  49 ++--
 18 files changed, 630 insertions(+), 400 deletions(-)
 create mode 100644 packages/plugins/@nocobase/plugin-ai/src/client/ai-employees/chatbox/ChatConversationsProvider.tsx
 create mode 100644 packages/plugins/@nocobase/plugin-ai/src/client/ai-employees/chatbox/ChatMessagesProvider.tsx
 create mode 100644 packages/plugins/@nocobase/plugin-ai/src/client/ai-employees/chatbox/MessageRenderer.tsx
 delete mode 100644 packages/plugins/@nocobase/plugin-ai/src/client/ai-employees/chatbox/useChatMessages.ts
 create mode 100644 packages/plugins/@nocobase/plugin-ai/src/client/ai-employees/chatbox/useChatRequest.tsx
 create mode 100644 packages/plugins/@nocobase/plugin-ai/src/client/ai-employees/chatbox/useLoadMoreObserver.ts

diff --git a/packages/plugins/@nocobase/plugin-ai/src/client/ai-employees/AIEmployeesProvider.tsx b/packages/plugins/@nocobase/plugin-ai/src/client/ai-employees/AIEmployeesProvider.tsx
index e9c60d7758..f3e1694251 100644
--- a/packages/plugins/@nocobase/plugin-ai/src/client/ai-employees/AIEmployeesProvider.tsx
+++ b/packages/plugins/@nocobase/plugin-ai/src/client/ai-employees/AIEmployeesProvider.tsx
@@ -13,6 +13,8 @@ import { ChatBoxProvider } from './chatbox/ChatBoxProvider';
 import { useAPIClient, useRequest } from '@nocobase/client';
 import { AIEmployee } from './types';
 import { AISelectionProvider } from './selector/AISelectorProvider';
+import { ChatMessagesProvider } from './chatbox/ChatMessagesProvider';
+import { ChatConversationsProvider } from './chatbox/ChatConversationsProvider';
 
 export const AIEmployeesContext = createContext<{
   aiEmployees: AIEmployee[];
@@ -27,7 +29,11 @@ export const AIEmployeesProvider: React.FC<{
   return (
     <AISelectionProvider>
       <AIEmployeesContext.Provider value={{ aiEmployees, setAIEmployees }}>
-        <ChatBoxProvider>{props.children}</ChatBoxProvider>
+        <ChatConversationsProvider>
+          <ChatMessagesProvider>
+            <ChatBoxProvider>{props.children}</ChatBoxProvider>
+          </ChatMessagesProvider>
+        </ChatConversationsProvider>
       </AIEmployeesContext.Provider>
     </AISelectionProvider>
   );
diff --git a/packages/plugins/@nocobase/plugin-ai/src/client/ai-employees/chatbox/AIEmployeeHeader.tsx b/packages/plugins/@nocobase/plugin-ai/src/client/ai-employees/chatbox/AIEmployeeHeader.tsx
index 3e49fec162..26bdbbff65 100644
--- a/packages/plugins/@nocobase/plugin-ai/src/client/ai-employees/chatbox/AIEmployeeHeader.tsx
+++ b/packages/plugins/@nocobase/plugin-ai/src/client/ai-employees/chatbox/AIEmployeeHeader.tsx
@@ -7,7 +7,7 @@
  * For more information, please refer to: https://www.nocobase.com/agreement.
  */
 
-import React from 'react';
+import React, { useCallback } from 'react';
 import { List, Popover, Button, Avatar, Divider } from 'antd';
 import { useToken } from '@nocobase/client';
 import { useAIEmployeesContext } from '../AIEmployeesProvider';
@@ -17,13 +17,48 @@ import { avatars } from '../avatars';
 import { css } from '@emotion/css';
 import { Sender } from '@ant-design/x';
 import { ProfileCard } from '../ProfileCard';
+import { AIEmployee } from '../types';
+import { uid } from '@formily/shared';
+import { useChatMessages } from './ChatMessagesProvider';
+import { useChatConversations } from './ChatConversationsProvider';
 
 export const AIEmployeeHeader: React.FC = () => {
   const {
     service: { loading },
     aiEmployees,
   } = useAIEmployeesContext();
-  const switchAIEmployee = useChatBoxContext('switchAIEmployee');
+  const t = useT();
+  const { setMessages, addMessage } = useChatMessages();
+  const { currentConversation } = useChatConversations();
+  const setCurrentEmployee = useChatBoxContext('setCurrentEmployee');
+  const setSenderPlaceholder = useChatBoxContext('setSenderPlaceholder');
+  const setSenderValue = useChatBoxContext('setSenderValue');
+  const senderRef = useChatBoxContext('senderRef');
+  const infoForm = useChatBoxContext('infoForm');
+  const switchAIEmployee = useCallback(
+    (aiEmployee: AIEmployee) => {
+      const greetingMsg = {
+        key: uid(),
+        role: aiEmployee.username,
+        content: {
+          type: 'greeting' as const,
+          content: aiEmployee.greeting || t('Default greeting message', { nickname: aiEmployee.nickname }),
+        },
+      };
+      setCurrentEmployee(aiEmployee);
+      setSenderPlaceholder(aiEmployee.chatSettings?.senderPlaceholder);
+      infoForm.reset();
+      senderRef.current?.focus();
+      if (!currentConversation) {
+        setMessages([greetingMsg]);
+      } else {
+        addMessage(greetingMsg);
+        setSenderValue('');
+      }
+    },
+    [currentConversation, infoForm],
+  );
+
   return (
     <Sender.Header closable={false}>
       <List
diff --git a/packages/plugins/@nocobase/plugin-ai/src/client/ai-employees/chatbox/ChatBox.tsx b/packages/plugins/@nocobase/plugin-ai/src/client/ai-employees/chatbox/ChatBox.tsx
index 6b534b7c1f..d60df41f4f 100644
--- a/packages/plugins/@nocobase/plugin-ai/src/client/ai-employees/chatbox/ChatBox.tsx
+++ b/packages/plugins/@nocobase/plugin-ai/src/client/ai-employees/chatbox/ChatBox.tsx
@@ -9,9 +9,9 @@
 
 import React, { useState } from 'react';
 import { Layout, Card, Button } from 'antd';
-import { CloseOutlined, ExpandOutlined, EditOutlined, LayoutOutlined } from '@ant-design/icons';
+import { CloseOutlined, ExpandOutlined, EditOutlined, LayoutOutlined, ShrinkOutlined } from '@ant-design/icons';
 import { useToken } from '@nocobase/client';
-const { Header, Footer, Sider, Content } = Layout;
+const { Header, Footer, Sider } = Layout;
 import { useChatBoxContext } from './ChatBoxContext';
 import { Conversations } from './Conversations';
 import { Messages } from './Messages';
@@ -24,25 +24,37 @@ export const ChatBox: React.FC = () => {
   const currentEmployee = useChatBoxContext('currentEmployee');
   const { token } = useToken();
   const [showConversations, setShowConversations] = useState(false);
+  const [expanded, setExpanded] = useState(false);
   const { selectable } = useAISelectionContext();
 
   return (
     <div
-      style={{
-        position: 'fixed',
-        right: '16px',
-        bottom: '16px',
-        width: '90%',
-        maxWidth: '760px',
-        height: '90%',
-        maxHeight: '560px',
-        zIndex: selectable ? -1 : 1000,
-      }}
+      style={
+        !expanded
+          ? {
+              position: 'fixed',
+              right: '16px',
+              bottom: '16px',
+              width: '90%',
+              maxWidth: '760px',
+              height: '90%',
+              maxHeight: '560px',
+              zIndex: selectable ? -1 : 1000,
+            }
+          : {
+              position: 'fixed',
+              right: '16px',
+              bottom: '16px',
+              width: '95%',
+              height: '95%',
+              zIndex: selectable ? -1 : 1000,
+            }
+      }
     >
       <Card style={{ height: '100%' }} styles={{ body: { height: '100%', paddingTop: 0 } }}>
         <Layout style={{ height: '100%' }}>
           <Sider
-            width="30%"
+            width={!expanded ? '30%' : '15%'}
             style={{
               display: showConversations ? 'block' : 'none',
               backgroundColor: token.colorBgContainer,
@@ -78,19 +90,15 @@ export const ChatBox: React.FC = () => {
                   float: 'right',
                 }}
               >
-                <Button icon={<ExpandOutlined />} type="text" />
+                <Button
+                  icon={!expanded ? <ExpandOutlined /> : <ShrinkOutlined />}
+                  type="text"
+                  onClick={() => setExpanded(!expanded)}
+                />
                 <Button icon={<CloseOutlined />} type="text" onClick={() => setOpen(false)} />
               </div>
             </Header>
-            <Content
-              style={{
-                margin: '16px 0',
-                overflow: 'auto',
-                position: 'relative',
-              }}
-            >
-              <Messages />
-            </Content>
+            <Messages />
             <Footer
               style={{
                 backgroundColor: token.colorBgContainer,
diff --git a/packages/plugins/@nocobase/plugin-ai/src/client/ai-employees/chatbox/ChatBoxContext.tsx b/packages/plugins/@nocobase/plugin-ai/src/client/ai-employees/chatbox/ChatBoxContext.tsx
index 0ef0eaf6fd..eae34fd0fb 100644
--- a/packages/plugins/@nocobase/plugin-ai/src/client/ai-employees/chatbox/ChatBoxContext.tsx
+++ b/packages/plugins/@nocobase/plugin-ai/src/client/ai-employees/chatbox/ChatBoxContext.tsx
@@ -7,60 +7,43 @@
  * For more information, please refer to: https://www.nocobase.com/agreement.
  */
 
-import {
-  AttachmentProps,
-  Conversation,
-  Message,
-  Action,
-  SendOptions,
-  AIEmployee,
-  MessageType,
-  ShortcutOptions,
-} from '../types';
-import { Avatar, GetProp, GetRef, Button, Alert, Space, Popover } from 'antd';
+import { Conversation, Message, SendOptions, AIEmployee, ShortcutOptions } from '../types';
+import { Avatar, GetProp, GetRef, Button, Alert, Popover } from 'antd';
 import type { Sender } from '@ant-design/x';
-import React, { useContext, useEffect, useState, useRef, useMemo, useCallback } from 'react';
+import React, { useContext, useEffect, useState, useRef, useMemo, useCallback, createRef } from 'react';
 import { Bubble } from '@ant-design/x';
-import { useAPIClient, useRequest } from '@nocobase/client';
+import { useAPIClient } from '@nocobase/client';
 import { AIEmployeesContext } from '../AIEmployeesProvider';
-import { Attachment } from './Attachment';
-import { ReloadOutlined, CopyOutlined } from '@ant-design/icons';
+import { ReloadOutlined } from '@ant-design/icons';
 import { avatars } from '../avatars';
-import { useChatMessages } from './useChatMessages';
 import { uid } from '@formily/shared';
 import { useT } from '../../locale';
 import { createForm, Form } from '@formily/core';
 import { ProfileCard } from '../ProfileCard';
-import { InfoFormMessage } from './InfoForm';
 import { createContext, useContextSelector } from 'use-context-selector';
+import { AIMessage, UserMessage } from './MessageRenderer';
+import { useChatMessages } from './ChatMessagesProvider';
+import { useChatConversations } from './ChatConversationsProvider';
 
-export const ChatBoxContext = createContext<{
+type ChatBoxContextValues = {
   setOpen: (open: boolean) => void;
   open: boolean;
   currentEmployee: AIEmployee;
   setCurrentEmployee: React.Dispatch<React.SetStateAction<AIEmployee>>;
-  conversations: {
-    loading: boolean;
-    data?: Conversation[];
-    refresh: () => void;
-  };
-  currentConversation: string;
-  setCurrentConversation: React.Dispatch<React.SetStateAction<string | undefined>>;
-  messages: Message[];
-  setMessages: React.Dispatch<React.SetStateAction<Message[]>>;
   roles: { [role: string]: any };
-  responseLoading: boolean;
   senderValue: string;
   setSenderValue: React.Dispatch<React.SetStateAction<string>>;
   senderRef: React.MutableRefObject<GetRef<typeof Sender>>;
   senderPlaceholder: string;
+  setSenderPlaceholder: React.Dispatch<React.SetStateAction<string>>;
   infoForm: Form;
   showInfoForm: boolean;
-  switchAIEmployee: (aiEmployee: AIEmployee) => void;
   startNewConversation: () => void;
   triggerShortcut: (options: ShortcutOptions) => void;
   send(opts: SendOptions): void;
-}>({} as any);
+};
+
+export const ChatBoxContext = createContext<ChatBoxContextValues>({} as any);
 
 const defaultRoles: GetProp<typeof Bubble.List, 'roles'> = {
   user: {
@@ -68,16 +51,12 @@ const defaultRoles: GetProp<typeof Bubble.List, 'roles'> = {
     styles: {
       content: {
         maxWidth: '400px',
+        margin: '8px 8px 8px 0',
       },
     },
     variant: 'borderless',
     messageRender: (msg: any) => {
-      switch (msg.type) {
-        case 'text':
-          return <Bubble content={msg.content} />;
-        default:
-          return <Attachment {...msg} />;
-      }
+      return <UserMessage msg={msg} />;
     },
   },
   error: {
@@ -97,24 +76,6 @@ const defaultRoles: GetProp<typeof Bubble.List, 'roles'> = {
       );
     },
   },
-  info: {
-    placement: 'start',
-    avatar: { icon: '', style: { visibility: 'hidden' } },
-    typing: { step: 5, interval: 20 },
-    style: {
-      maxWidth: 400,
-      marginInlineEnd: 48,
-    },
-    styles: {
-      footer: {
-        width: '100%',
-      },
-    },
-    // variant: 'borderless',
-    messageRender: (msg: any) => {
-      return <InfoFormMessage values={msg.content} />;
-    },
-  },
   action: {
     placement: 'start',
     avatar: { icon: '', style: { visibility: 'hidden' } },
@@ -148,8 +109,9 @@ const aiEmployeeRole = (aiEmployee: AIEmployee) => ({
   ) : null,
   typing: { step: 5, interval: 20 },
   style: {
-    maxWidth: 400,
+    maxWidth: '80%',
     marginInlineEnd: 48,
+    margin: '8px 0',
   },
   styles: {
     footer: {
@@ -158,33 +120,17 @@ const aiEmployeeRole = (aiEmployee: AIEmployee) => ({
   },
   variant: 'borderless',
   messageRender: (msg: any) => {
-    switch (msg.type) {
-      case 'greeting':
-        return <Bubble content={msg.content} />;
-      case 'text':
-        return (
-          <Bubble
-            content={msg.content}
-            footer={
-              <Space>
-                <Button color="default" variant="text" size="small" icon={<ReloadOutlined />} />
-                <Button color="default" variant="text" size="small" icon={<CopyOutlined />} />
-              </Space>
-            }
-          />
-        );
-    }
+    return <AIMessage msg={msg} />;
   },
 });
 
 export const useSetChatBoxContext = () => {
   const t = useT();
-  const api = useAPIClient();
   const { aiEmployees } = useContext(AIEmployeesContext);
   const [open, setOpen] = useState(false);
   const [currentEmployee, setCurrentEmployee] = useState<AIEmployee>(null);
-  const [currentConversation, setCurrentConversation] = useState<string>();
-  const { messages, setMessages, responseLoading, addMessage, sendMessages } = useChatMessages();
+  const { setMessages, sendMessages } = useChatMessages();
+  const { currentConversation, setCurrentConversation, conversationsService } = useChatConversations();
   const [senderValue, setSenderValue] = useState<string>('');
   const [senderPlaceholder, setSenderPlaceholder] = useState<string>('');
   const senderRef = useRef<GetRef<typeof Sender>>(null);
@@ -192,25 +138,12 @@ export const useSetChatBoxContext = () => {
 
   const infoForm = useMemo(() => createForm(), []);
 
-  const conversations = useRequest<Conversation[]>(
-    () =>
-      api
-        .resource('aiConversations')
-        .list({
-          sort: ['-updatedAt'],
-        })
-        .then((res) => res?.data?.data),
-    {
-      ready: open,
-    },
-  );
-
   const send = (options: SendOptions) => {
     const sendOptions = {
       ...options,
       onConversationCreate: (sessionId: string) => {
         setCurrentConversation(sessionId);
-        conversations.refresh();
+        conversationsService.refresh();
       },
     };
     const hasInfoFormValues = Object.values(infoForm?.values || []).filter(Boolean).length;
@@ -231,30 +164,6 @@ export const useSetChatBoxContext = () => {
     }
   };
 
-  const switchAIEmployee = useCallback(
-    (aiEmployee: AIEmployee) => {
-      const greetingMsg = {
-        key: uid(),
-        role: aiEmployee.username,
-        content: {
-          type: 'greeting',
-          content: aiEmployee.greeting || t('Default greeting message', { nickname: aiEmployee.nickname }),
-        },
-      };
-      setCurrentEmployee(aiEmployee);
-      setSenderPlaceholder(aiEmployee.chatSettings?.senderPlaceholder);
-      infoForm.reset();
-      senderRef.current?.focus();
-      if (!currentConversation) {
-        setMessages([greetingMsg]);
-      } else {
-        addMessage(greetingMsg);
-        setSenderValue('');
-      }
-    },
-    [currentConversation, infoForm],
-  );
-
   const startNewConversation = useCallback(() => {
     setCurrentConversation(undefined);
     setCurrentEmployee(null);
@@ -321,6 +230,7 @@ export const useSetChatBoxContext = () => {
 
   useEffect(() => {
     if (open) {
+      conversationsService.run();
       senderRef.current?.focus();
     }
   }, [open]);
@@ -330,26 +240,20 @@ export const useSetChatBoxContext = () => {
     setOpen,
     currentEmployee,
     setCurrentEmployee,
-    conversations,
-    currentConversation,
-    setCurrentConversation,
-    messages,
-    setMessages,
     roles,
-    responseLoading,
     senderRef,
     senderValue,
     setSenderValue,
     senderPlaceholder,
+    setSenderPlaceholder,
     showInfoForm: !!currentEmployee?.chatSettings?.infoForm?.length,
     infoForm,
-    switchAIEmployee,
     startNewConversation,
     triggerShortcut,
     send,
   };
 };
 
-export const useChatBoxContext = (name: string) => {
+export const useChatBoxContext = <K extends keyof ChatBoxContextValues>(name: K) => {
   return useContextSelector(ChatBoxContext, (v) => v[name]);
 };
diff --git a/packages/plugins/@nocobase/plugin-ai/src/client/ai-employees/chatbox/ChatConversationsProvider.tsx b/packages/plugins/@nocobase/plugin-ai/src/client/ai-employees/chatbox/ChatConversationsProvider.tsx
new file mode 100644
index 0000000000..970d045d6e
--- /dev/null
+++ b/packages/plugins/@nocobase/plugin-ai/src/client/ai-employees/chatbox/ChatConversationsProvider.tsx
@@ -0,0 +1,49 @@
+/**
+ * This file is part of the NocoBase (R) project.
+ * Copyright (c) 2020-2024 NocoBase Co., Ltd.
+ * Authors: NocoBase Team.
+ *
+ * This project is dual-licensed under AGPL-3.0 and NocoBase Commercial License.
+ * For more information, please refer to: https://www.nocobase.com/agreement.
+ */
+
+import { useAPIClient, useRequest } from '@nocobase/client';
+import React, { createContext, useContext, useState } from 'react';
+import { Conversation } from '../types';
+
+type ChatConversationContextValue = {
+  currentConversation?: string;
+  setCurrentConversation: (sessionId?: string) => void;
+  conversationsService: any;
+};
+
+export const ChatConversationsContext = createContext<ChatConversationContextValue | null>(null);
+
+export const useChatConversations = () => useContext(ChatConversationsContext);
+
+export const ChatConversationsProvider: React.FC<{ children: React.ReactNode }> = ({ children }) => {
+  const api = useAPIClient();
+  const [currentConversation, setCurrentConversation] = useState<string>();
+
+  const conversationsService = useRequest<Conversation[]>(
+    () =>
+      api
+        .resource('aiConversations')
+        .list({
+          sort: ['-updatedAt'],
+          appends: ['aiEmployee'],
+        })
+        .then((res) => res?.data?.data),
+    {
+      manual: true,
+    },
+  );
+
+  const value = {
+    currentConversation,
+    setCurrentConversation,
+    conversationsService,
+  };
+
+  return <ChatConversationsContext.Provider value={value}>{children}</ChatConversationsContext.Provider>;
+};
diff --git a/packages/plugins/@nocobase/plugin-ai/src/client/ai-employees/chatbox/ChatMessagesProvider.tsx b/packages/plugins/@nocobase/plugin-ai/src/client/ai-employees/chatbox/ChatMessagesProvider.tsx
new file mode 100644
index 0000000000..97e036b185
--- /dev/null
+++ b/packages/plugins/@nocobase/plugin-ai/src/client/ai-employees/chatbox/ChatMessagesProvider.tsx
@@ -0,0 +1,248 @@
+/**
+ * This file is part of the NocoBase (R) project.
+ * Copyright (c) 2020-2024 NocoBase Co., Ltd.
+ * Authors: NocoBase Team.
+ *
+ * This project is dual-licensed under AGPL-3.0 and NocoBase Commercial License.
+ * For more information, please refer to: https://www.nocobase.com/agreement.
+ */
+
+import { createContext, useCallback, useContext, useEffect, useRef } from 'react';
+import { Message, SendOptions } from '../types'; // 假设有这些类型定义
+import React, { useState } from 'react';
+import { uid } from '@formily/shared';
+import { useT } from '../../locale';
+import { useAPIClient, useRequest } from '@nocobase/client';
+import { useChatConversations } from './ChatConversationsProvider';
+import { useLoadMoreObserver } from './useLoadMoreObserver';
+
+interface ChatMessagesContextValue {
+  messages: Message[];
+  responseLoading: boolean;
+  addMessage: (message: Message) => void;
+  addMessages: (messages: Message[]) => void;
+  setMessages: (messages: Message[]) => void;
+  sendMessages: (
+    options: SendOptions & {
+      onConversationCreate?: (sessionId: string) => void;
+    },
+  ) => Promise<void>;
+  messagesService: any;
+  lastMessageRef: React.RefObject<any>;
+}
+
+export const ChatMessagesContext = createContext<ChatMessagesContextValue | null>(null);
+
+export const useChatMessages = () => useContext(ChatMessagesContext);
+
+export const ChatMessagesProvider: React.FC<{ children: React.ReactNode }> = ({ children }) => {
+  const t = useT();
+  const api = useAPIClient();
+  const [messages, setMessages] = useState<Message[]>([]);
+  const [responseLoading, setResponseLoading] = useState(false);
+  const { currentConversation } = useChatConversations();
+
+  const addMessage = (message: Message) => {
+    setMessages((prev) => [...prev, message]);
+  };
+
+  const addMessages = (newMessages: Message[]) => {
+    setMessages((prev) => [...prev, ...newMessages]);
+  };
+
+  const updateLastMessage = (updater: (message: Message) => Message) => {
+    setMessages((prev) => {
+      const lastIndex = prev.length - 1;
+      if (lastIndex < 0) return prev;
+      const updated = [...prev];
+      updated[lastIndex] = updater(updated[lastIndex]);
+      return updated;
+    });
+  };
+
+  const processStreamResponse = async (stream: any) => {
+    const reader = stream.getReader();
+    const decoder = new TextDecoder();
+    let result = '';
+    let error = false;
+
+    // eslint-disable-next-line no-constant-condition
+    while (true) {
+      let content = '';
+      const { done, value } = await reader.read();
+      if (done || error) {
+        setResponseLoading(false);
+        break;
+      }
+
+      const chunk = decoder.decode(value, { stream: true });
+      const lines = chunk.split('\n').filter(Boolean);
+
+      for (const line of lines) {
+        try {
+          const data = JSON.parse(line.replace(/^data: /, ''));
+          if (data.body) content += data.body;
+          if (data.type === 'error') error = true;
+        } catch (e) {
+          console.error('Error parsing stream data:', e);
+        }
+      }
+
+      result += content;
+      updateLastMessage((last) => ({
+        ...last,
+        content: {
+          ...last.content,
+          content: (last.content as any).content + content,
+        },
+        loading: false,
+      }));
+    }
+
+    if (error) {
+      updateLastMessage((last) => ({
+        ...last,
+        role: 'error',
+        loading: false,
+        content: {
+          ...last.content,
+          content: t(result),
+        },
+      }));
+    }
+
+    return { result, error };
+  };
+
+  const sendMessages = async ({
+    sessionId,
+    aiEmployee,
+    messages: sendMsgs,
+    infoFormValues,
+    onConversationCreate,
+  }: SendOptions & {
+    onConversationCreate?: (sessionId: string) => void;
+  }) => {
+    const msgs: Message[] = [];
+    if (!sendMsgs.length) return;
+
+    if (infoFormValues) {
+      msgs.push({
+        key: uid(),
+        role: aiEmployee.username,
+        content: {
+          type: 'info',
+          content: infoFormValues,
+        },
+      });
+    }
+
+    msgs.push(
+      ...sendMsgs.map((msg) => ({
+        key: uid(),
+        role: 'user',
+        content: msg,
+      })),
+    );
+
+    addMessages(msgs);
+
+    if (!sessionId) {
+      const createRes = await api.resource('aiConversations').create({
+        values: { aiEmployee },
+      });
+      const conversation = createRes?.data?.data;
+      if (!conversation) return;
+      sessionId = conversation.sessionId;
+      onConversationCreate?.(sessionId);
+    }
+
+    setResponseLoading(true);
+    addMessage({
+      key: uid(),
+      role: aiEmployee.username,
+      content: { type: 'text', content: '' },
+      loading: true,
+    });
+
+    const sendRes = await api.request({
+      url: 'aiConversations:sendMessages',
+      method: 'POST',
+      headers: { Accept: 'text/event-stream' },
+      data: { aiEmployee: aiEmployee.username, sessionId, messages: msgs },
+      responseType: 'stream',
+      adapter: 'fetch',
+    });
+
+    if (!sendRes?.data) {
+      setResponseLoading(false);
+      return;
+    }
+
+    await processStreamResponse(sendRes.data);
+  };
+
+  const messagesService = useRequest<{
+    data: Message[];
+    meta: {
+      cursor?: string;
+      hasMore?: boolean;
+    };
+  }>(
+    (cursor?: string) =>
+      api
+        .resource('aiConversations')
+        .getMessages({
+          sessionId: currentConversation,
+          cursor,
+        })
+        .then((res) => res?.data),
+    {
+      manual: true,
+      onSuccess: (data, params) => {
+        const cursor = params[0];
+        if (!data?.data?.length) {
+          return;
+        }
+        const newMessages = [...data.data].reverse();
+
+        setMessages((prev) => {
+          return cursor ? [...newMessages, ...prev] : newMessages;
+        });
+      },
+    },
+  );
+  const messagesServiceRef = useRef<any>();
+  messagesServiceRef.current = messagesService;
+  const loadMoreMessages = useCallback(async () => {
+    const messagesService = messagesServiceRef.current;
+    if (messagesService.loading || !messagesService.data?.meta?.hasMore) {
+      return;
+    }
+    await messagesService.runAsync(messagesService.data?.meta?.cursor);
+  }, []);
+  const { ref: lastMessageRef } = useLoadMoreObserver({ loadMore: loadMoreMessages });
+  useEffect(() => {
+    if (!currentConversation) {
+      return;
+    }
+    messagesServiceRef.current.run();
+  }, [currentConversation]);
+
+  return (
+    <ChatMessagesContext.Provider
+      value={{
+        messages,
+        responseLoading,
+        addMessage,
+        addMessages,
+        setMessages,
+        sendMessages,
+        messagesService,
+        lastMessageRef,
+      }}
+    >
+      {children}
+    </ChatMessagesContext.Provider>
+  );
+};
diff --git a/packages/plugins/@nocobase/plugin-ai/src/client/ai-employees/chatbox/Conversations.tsx b/packages/plugins/@nocobase/plugin-ai/src/client/ai-employees/chatbox/Conversations.tsx
index 816eeb70b3..2a0a436d64 100644
--- a/packages/plugins/@nocobase/plugin-ai/src/client/ai-employees/chatbox/Conversations.tsx
+++ b/packages/plugins/@nocobase/plugin-ai/src/client/ai-employees/chatbox/Conversations.tsx
@@ -15,6 +15,7 @@ import { useAPIClient, useToken } from '@nocobase/client';
 import { useChatBoxContext } from './ChatBoxContext';
 import { useT } from '../../locale';
 import { DeleteOutlined } from '@ant-design/icons';
+import { useChatConversations } from './ChatConversationsProvider';
 const { Header, Content } = Layout;
 
 export const Conversations: React.FC = () => {
@@ -22,11 +23,11 @@ export const Conversations: React.FC = () => {
   const api = useAPIClient();
   const { modal, message } = App.useApp();
   const { token } = useToken();
-  const conversationsService = useChatBoxContext('conversations');
-  const currentConversation = useChatBoxContext('currentConversation');
-  const setCurrentConversation = useChatBoxContext('setCurrentConversation');
-  const setMessages = useChatBoxContext('setMessages');
+  const { currentConversation, setCurrentConversation, conversationsService } = useChatConversations();
   const startNewConversation = useChatBoxContext('startNewConversation');
+  const setCurrentEmployee = useChatBoxContext('setCurrentEmployee');
+  const setSenderValue = useChatBoxContext('setSenderValue');
+  const setSenderPlaceholder = useChatBoxContext('setSenderPlaceholder');
   const { loading: ConversationsLoading, data: conversationsRes } = conversationsService;
   const conversations: ConversationsProps['items'] = (conversationsRes || []).map((conversation) => ({
     key: conversation.sessionId,
@@ -43,15 +44,15 @@ export const Conversations: React.FC = () => {
     startNewConversation();
   };
 
-  const getMessages = async (sessionId: string) => {
-    const res = await api.resource('aiConversations').getMessages({
-      sessionId,
-    });
-    const messages = res?.data?.data;
-    if (!messages) {
+  const selectConversation = (sessionId: string) => {
+    if (sessionId === currentConversation) {
       return;
     }
-    setMessages(messages.reverse());
+    setCurrentConversation(sessionId);
+    const conversation = conversationsRes.find((item) => item.sessionId === sessionId);
+    setCurrentEmployee(conversation?.aiEmployee);
+    setSenderValue('');
+    setSenderPlaceholder(conversation?.aiEmployee?.chatSettings?.senderPlaceholder);
   };
 
   return (
@@ -71,13 +72,7 @@ export const Conversations: React.FC = () => {
           {conversations && conversations.length ? (
             <AntConversations
               activeKey={currentConversation}
-              onActiveChange={(sessionId) => {
-                if (sessionId === currentConversation) {
-                  return;
-                }
-                setCurrentConversation(sessionId);
-                getMessages(sessionId);
-              }}
+              onActiveChange={selectConversation}
               items={conversations}
               menu={(conversation) => ({
                 items: [
diff --git a/packages/plugins/@nocobase/plugin-ai/src/client/ai-employees/chatbox/MessageRenderer.tsx b/packages/plugins/@nocobase/plugin-ai/src/client/ai-employees/chatbox/MessageRenderer.tsx
new file mode 100644
index 0000000000..1143fa2a57
--- /dev/null
+++ b/packages/plugins/@nocobase/plugin-ai/src/client/ai-employees/chatbox/MessageRenderer.tsx
@@ -0,0 +1,69 @@
+/**
+ * This file is part of the NocoBase (R) project.
+ * Copyright (c) 2020-2024 NocoBase Co., Ltd.
+ * Authors: NocoBase Team.
+ *
+ * This project is dual-licensed under AGPL-3.0 and NocoBase Commercial License.
+ * For more information, please refer to: https://www.nocobase.com/agreement.
+ */
+
+import React, { memo } from 'react';
+import { Button, Space } from 'antd';
+import { CopyOutlined, ReloadOutlined } from '@ant-design/icons';
+import { Bubble } from '@ant-design/x';
+import { InfoFormMessage } from './InfoForm';
+
+const MessageWrapper = React.forwardRef<
+  HTMLDivElement,
+  {
+    children: React.ReactNode;
+  }
+>((props, ref) => {
+  if (ref) {
+    return <div ref={ref}>{props.children}</div>;
+  }
+  return props.children;
+});
+
+const AIMessageRenderer: React.FC<{
+  msg: any;
+}> = ({ msg }) => {
+  switch (msg.type) {
+    case 'greeting':
+      return <Bubble content={msg.content} />;
+    case 'text':
+      return (
+        <Bubble
+          content={msg.content}
+          footer={
+            <Space>
+              <Button color="default" variant="text" size="small" icon={<ReloadOutlined />} />
+              <Button color="default" variant="text" size="small" icon={<CopyOutlined />} />
+            </Space>
+          }
+        />
+      );
+    case 'info':
+      return <Bubble content={<InfoFormMessage values={msg.content} />} />;
+  }
+};
+
+export const AIMessage: React.FC<{
+  msg: any;
+}> = memo(({ msg }) => {
+  return (
+    <MessageWrapper ref={msg.ref}>
+      <AIMessageRenderer msg={msg} />
+    </MessageWrapper>
+  );
+});
+
+export const UserMessage: React.FC<{
+  msg: any;
+}> = memo(({ msg }) => {
+  return (
+    <MessageWrapper ref={msg.ref}>
+      <Bubble content={msg.content} />
+    </MessageWrapper>
+  );
+});
diff --git a/packages/plugins/@nocobase/plugin-ai/src/client/ai-employees/chatbox/Messages.tsx b/packages/plugins/@nocobase/plugin-ai/src/client/ai-employees/chatbox/Messages.tsx
index 2af8046aa5..bdad0fc4fb 100644
--- a/packages/plugins/@nocobase/plugin-ai/src/client/ai-employees/chatbox/Messages.tsx
+++ b/packages/plugins/@nocobase/plugin-ai/src/client/ai-employees/chatbox/Messages.tsx
@@ -7,24 +7,55 @@
  * For more information, please refer to: https://www.nocobase.com/agreement.
  */
 
-import React from 'react';
+import React, { memo, useEffect, useRef } from 'react';
 import { Bubble } from '@ant-design/x';
 import { useChatBoxContext } from './ChatBoxContext';
 import { ReactComponent as EmptyIcon } from '../empty-icon.svg';
+import { Spin, Layout } from 'antd';
+import { useChatMessages } from './ChatMessagesProvider';
 
 export const Messages: React.FC = () => {
-  const messages = useChatBoxContext('messages');
+  const { messages, messagesService, lastMessageRef } = useChatMessages();
   const roles = useChatBoxContext('roles');
+  const contentRef = useRef(null);
+  const lastMessageContent = messages[messages.length - 1]?.key;
+
+  useEffect(() => {
+    if (contentRef.current) {
+      contentRef.current.scrollTop = contentRef.current.scrollHeight;
+    }
+  }, [lastMessageContent]);
+
   return (
-    <>
-      {messages?.length ? (
-        <Bubble.List
+    <Layout.Content
+      ref={contentRef}
+      style={{
+        margin: '16px 0',
+        overflow: 'auto',
+        position: 'relative',
+      }}
+    >
+      {messagesService.loading && (
+        <Spin
           style={{
-            marginRight: '8px',
+            display: 'block',
+            margin: '8px auto',
           }}
-          roles={roles}
-          items={messages}
         />
+      )}
+      {messages?.length ? (
+        <div>
+          {messages.map((msg, index) => {
+            const role = roles[msg.role];
+            return index === 0 ? (
+              <div ref={lastMessageRef}>
+                <Bubble {...role} key={msg.key} content={msg.content} />
+              </div>
+            ) : (
+              <Bubble {...role} key={msg.key} content={msg.content} />
+            );
+          })}
+        </div>
       ) : (
         <div
           style={{
@@ -38,6 +69,6 @@ export const Messages: React.FC = () => {
           <EmptyIcon />
         </div>
       )}
-    </>
+    </Layout.Content>
   );
 };
diff --git a/packages/plugins/@nocobase/plugin-ai/src/client/ai-employees/chatbox/Sender.tsx b/packages/plugins/@nocobase/plugin-ai/src/client/ai-employees/chatbox/Sender.tsx
index 8e61052457..e438a1fdff 100644
--- a/packages/plugins/@nocobase/plugin-ai/src/client/ai-employees/chatbox/Sender.tsx
+++ b/packages/plugins/@nocobase/plugin-ai/src/client/ai-employees/chatbox/Sender.tsx
@@ -11,21 +11,21 @@ import React, { memo } from 'react';
 import { Sender as AntSender } from '@ant-design/x';
 import { useChatBoxContext } from './ChatBoxContext';
 import { SenderPrefix } from './SenderPrefix';
-import { Attachment } from './Attachment';
-import { AIEmployeeHeader } from './AIEmployeeHeader';
 import { useT } from '../../locale';
 import { SenderHeader } from './SenderHeader';
 import { SenderFooter } from './SenderFooter';
+import { useChatConversations } from './ChatConversationsProvider';
+import { useChatMessages } from './ChatMessagesProvider';
 
 export const Sender: React.FC = memo(() => {
   const t = useT();
+  const { currentConversation } = useChatConversations();
+  const { responseLoading } = useChatMessages();
   const senderValue = useChatBoxContext('senderValue');
   const setSenderValue = useChatBoxContext('setSenderValue');
   const senderPlaceholder = useChatBoxContext('senderPlaceholder');
   const send = useChatBoxContext('send');
-  const currentConversation = useChatBoxContext('currentConversation');
   const currentEmployee = useChatBoxContext('currentEmployee');
-  const responseLoading = useChatBoxContext('responseLoading');
   const showInfoForm = useChatBoxContext('showInfoForm');
   const senderRef = useChatBoxContext('senderRef');
   return (
diff --git a/packages/plugins/@nocobase/plugin-ai/src/client/ai-employees/chatbox/SenderFooter.tsx b/packages/plugins/@nocobase/plugin-ai/src/client/ai-employees/chatbox/SenderFooter.tsx
index be55511ba3..eacfbf97dc 100644
--- a/packages/plugins/@nocobase/plugin-ai/src/client/ai-employees/chatbox/SenderFooter.tsx
+++ b/packages/plugins/@nocobase/plugin-ai/src/client/ai-employees/chatbox/SenderFooter.tsx
@@ -9,16 +9,14 @@
 
 import React from 'react';
 import { Divider, Flex } from 'antd';
-import { useChatBoxContext } from './ChatBoxContext';
 import { FieldSelector } from './FieldSelector';
-import { useT } from '../../locale';
+import { useChatMessages } from './ChatMessagesProvider';
 
 export const SenderFooter: React.FC<{
   components: any;
 }> = ({ components }) => {
-  const t = useT();
   const { SendButton, LoadingButton } = components;
-  const { responseLoading: loading } = useChatBoxContext('responseLoading');
+  const { responseLoading: loading } = useChatMessages();
 
   return (
     <Flex justify="space-between" align="center">
diff --git a/packages/plugins/@nocobase/plugin-ai/src/client/ai-employees/chatbox/useChatMessages.ts b/packages/plugins/@nocobase/plugin-ai/src/client/ai-employees/chatbox/useChatMessages.ts
deleted file mode 100644
index ace602c83d..0000000000
--- a/packages/plugins/@nocobase/plugin-ai/src/client/ai-employees/chatbox/useChatMessages.ts
+++ /dev/null
@@ -1,194 +0,0 @@
-/**
- * This file is part of the NocoBase (R) project.
- * Copyright (c) 2020-2024 NocoBase Co., Ltd.
- * Authors: NocoBase Team.
- *
- * This project is dual-licensed under AGPL-3.0 and NocoBase Commercial License.
- * For more information, please refer to: https://www.nocobase.com/agreement.
- */
-
-import { useAPIClient } from '@nocobase/client';
-import { useState } from 'react';
-import { Action, AttachmentProps, Message, SendOptions } from '../types';
-import { uid } from '@formily/shared';
-import { useT } from '../../locale';
-
-export const useChatMessages = () => {
-  const t = useT();
-  const api = useAPIClient();
-  const [messages, setMessages] = useState<Message[]>([]);
-  const [responseLoading, setResponseLoading] = useState(false);
-
-  const addMessage = (message: Message) => {
-    setMessages((prev) => [...prev, message]);
-  };
-
-  const addMessages = (newMessages: Message[]) => {
-    setMessages((prev) => [...prev, ...newMessages]);
-  };
-
-  const updateLastMessage = (updater: (message: Message) => Message) => {
-    setMessages((prev) => {
-      const lastIndex = prev.length - 1;
-      if (lastIndex < 0) {
-        return prev;
-      }
-
-      const updated = [...prev];
-      updated[lastIndex] = updater(updated[lastIndex]);
-      return updated;
-    });
-  };
-
-  const processStreamResponse = async (stream: any) => {
-    const reader = stream.getReader();
-    const decoder = new TextDecoder();
-    let result = '';
-    let error = false;
-
-    // eslint-disable-next-line no-constant-condition
-    while (true) {
-      let content = '';
-      const { done, value } = await reader.read();
-      if (done || error) {
-        setResponseLoading(false);
-        break;
-      }
-
-      const chunk = decoder.decode(value, { stream: true });
-      const lines = chunk.split('\n').filter(Boolean);
-
-      for (const line of lines) {
-        try {
-          const data = JSON.parse(line.replace(/^data: /, ''));
-          if (data.body) {
-            content += data.body;
-          }
-          if (data.type === 'error') {
-            error = true;
-          }
-        } catch (e) {
-          console.error('Error parsing stream data:', e);
-        }
-      }
-
-      result += content;
-
-      // Update the last message with the new content
-      updateLastMessage((last) => {
-        // @ts-ignore
-        last.content.content = last.content.content + content;
-        last.loading = false;
-        return last;
-      });
-    }
-
-    if (error) {
-      updateLastMessage((last) => {
-        last.role = 'error';
-        last.loading = false;
-        // @ts-ignore
-        last.content.content = t(result);
-        return last;
-      });
-    }
-
-    return { result, error };
-  };
-
-  const sendMessages = async ({
-    sessionId,
-    aiEmployee,
-    messages: sendMsgs,
-    infoFormValues,
-    onConversationCreate,
-  }: SendOptions & {
-    onConversationCreate?: (sessionId: string) => void;
-  }) => {
-    const msgs: Message[] = [];
-    if (!sendMsgs.length) {
-      return;
-    }
-    if (infoFormValues) {
-      msgs.push({
-        key: uid(),
-        role: 'info',
-        content: {
-          type: 'info',
-          content: infoFormValues,
-        },
-      });
-    }
-    msgs.push(...sendMsgs.map((msg) => ({ key: uid(), role: 'user', content: msg })));
-    addMessages(msgs);
-    if (!sessionId) {
-      const createRes = await api.resource('aiConversations').create({
-        values: {
-          aiEmployees: [aiEmployee],
-        },
-      });
-      const conversation = createRes?.data?.data;
-      if (!conversation) {
-        return;
-      }
-      sessionId = conversation.sessionId;
-      onConversationCreate?.(sessionId);
-    }
-    setResponseLoading(true);
-
-    addMessage({
-      key: uid(),
-      role: aiEmployee.username,
-      content: {
-        type: 'text',
-        content: '',
-      },
-      loading: true,
-    });
-    const sendRes = await api.request({
-      url: 'aiConversations:sendMessages',
-      method: 'POST',
-      headers: {
-        Accept: 'text/event-stream',
-      },
-      data: {
-        aiEmployee: aiEmployee.username,
-        sessionId,
-        messages: msgs,
-      },
-      responseType: 'stream',
-      adapter: 'fetch',
-    });
-    if (!sendRes?.data) {
-      setResponseLoading(false);
-      return;
-    }
-    const { result, error } = await processStreamResponse(sendRes.data);
-    // if (actions.length && !error) {
-    //   addMessages(
-    //     actions.map((action) => ({
-    //       key: uid(),
-    //       role: 'action',
-    //       content: {
-    //         type: 'action',
-    //         icon: action.icon,
-    //         content: action.content,
-    //         onClick: () => {
-    //           action.onClick(result);
-    //         },
-    //       },
-    //     })),
-    //   );
-    //   setActions([]);
-    // }
-  };
-
-  return {
-    messages,
-    addMessage,
-    addMessages,
-    setMessages,
-    responseLoading,
-    sendMessages,
-  };
-};
diff --git a/packages/plugins/@nocobase/plugin-ai/src/client/ai-employees/chatbox/useChatRequest.tsx b/packages/plugins/@nocobase/plugin-ai/src/client/ai-employees/chatbox/useChatRequest.tsx
new file mode 100644
index 0000000000..d3436f53a5
--- /dev/null
+++ b/packages/plugins/@nocobase/plugin-ai/src/client/ai-employees/chatbox/useChatRequest.tsx
@@ -0,0 +1,9 @@
+/**
+ * This file is part of the NocoBase (R) project.
+ * Copyright (c) 2020-2024 NocoBase Co., Ltd.
+ * Authors: NocoBase Team.
+ *
+ * This project is dual-licensed under AGPL-3.0 and NocoBase Commercial License.
+ * For more information, please refer to: https://www.nocobase.com/agreement.
+ */
+
diff --git a/packages/plugins/@nocobase/plugin-ai/src/client/ai-employees/chatbox/useLoadMoreObserver.ts b/packages/plugins/@nocobase/plugin-ai/src/client/ai-employees/chatbox/useLoadMoreObserver.ts
new file mode 100644
index 0000000000..e75d62ed2f
--- /dev/null
+++ b/packages/plugins/@nocobase/plugin-ai/src/client/ai-employees/chatbox/useLoadMoreObserver.ts
@@ -0,0 +1,49 @@
+/**
+ * This file is part of the NocoBase (R) project.
+ * Copyright (c) 2020-2024 NocoBase Co., Ltd.
+ * Authors: NocoBase Team.
+ *
+ * This project is dual-licensed under AGPL-3.0 and NocoBase Commercial License.
+ * For more information, please refer to: https://www.nocobase.com/agreement.
+ */
+
+import { useCallback, useEffect, useRef } from 'react';
+
+export const useLoadMoreObserver = ({ loadMore }: { loadMore: () => void }) => {
+  const lastElementRef = useRef<HTMLElement | null>(null);
+  const observerRef = useRef<IntersectionObserver | null>(null);
+
+  const setLastElementRef = useCallback(
+    (node: HTMLElement | null) => {
+      lastElementRef.current = node;
+
+      if (node) {
+        observerRef.current?.disconnect();
+
+        observerRef.current = new IntersectionObserver((entries) => {
+          const [entry] = entries;
+          if (entry.isIntersecting) {
+            observerRef.current?.unobserve(entry.target);
+            loadMore();
+            setTimeout(() => {
+              if (lastElementRef.current) {
+                observerRef.current?.observe(lastElementRef.current);
+              }
+            }, 100);
+          }
+        });
+
+        observerRef.current.observe(node);
+      }
+    },
+    [loadMore],
+  );
+
+  useEffect(() => {
+    return () => {
+      observerRef.current?.disconnect();
+    };
+  }, []);
+
+  return { ref: setLastElementRef };
+};
diff --git a/packages/plugins/@nocobase/plugin-ai/src/client/ai-employees/manager/ProfileSettings.tsx b/packages/plugins/@nocobase/plugin-ai/src/client/ai-employees/manager/ProfileSettings.tsx
index 11c3eda7cc..1a60160dfa 100644
--- a/packages/plugins/@nocobase/plugin-ai/src/client/ai-employees/manager/ProfileSettings.tsx
+++ b/packages/plugins/@nocobase/plugin-ai/src/client/ai-employees/manager/ProfileSettings.tsx
@@ -64,6 +64,9 @@ export const ProfileSettings: React.FC = () => {
             title: 'Greeting message',
             'x-decorator': 'FormItem',
             'x-component': 'Input.TextArea',
+            'x-component-props': {
+              placeholder: 'Opening message sent to the user when starting a new conversation.',
+            },
           },
         },
       }}
diff --git a/packages/plugins/@nocobase/plugin-ai/src/client/ai-employees/types.ts b/packages/plugins/@nocobase/plugin-ai/src/client/ai-employees/types.ts
index 66fccf2025..278cdecea1 100644
--- a/packages/plugins/@nocobase/plugin-ai/src/client/ai-employees/types.ts
+++ b/packages/plugins/@nocobase/plugin-ai/src/client/ai-employees/types.ts
@@ -33,6 +33,7 @@ export type Conversation = {
   sessionId: string;
   title: string;
   updatedAt: string;
+  aiEmployee: AIEmployee;
 };
 
 export type AttachmentType = 'image' | 'uiSchema';
@@ -43,8 +44,15 @@ export type AttachmentProps = {
   description?: string;
 };
 
-export type MessageType = 'text' | AttachmentType;
-export type Message = BubbleProps & { key?: string | number; role?: string };
+export type MessageType = 'text' | 'greeting' | 'info' | AttachmentType;
+export type Message = Omit<BubbleProps, 'content'> & {
+  key?: string | number;
+  role?: string;
+  content: {
+    type: MessageType;
+    content: any;
+  };
+};
 export type Action = {
   icon?: React.ReactNode;
   content: string;
diff --git a/packages/plugins/@nocobase/plugin-ai/src/server/collections/ai-conversations.ts b/packages/plugins/@nocobase/plugin-ai/src/server/collections/ai-conversations.ts
index 16f5e8dc0b..62c9d9a56c 100644
--- a/packages/plugins/@nocobase/plugin-ai/src/server/collections/ai-conversations.ts
+++ b/packages/plugins/@nocobase/plugin-ai/src/server/collections/ai-conversations.ts
@@ -31,14 +31,11 @@ export default defineCollection({
       foreignKey: 'userId',
     },
     {
-      name: 'aiEmployees',
-      type: 'belongsToMany',
+      name: 'aiEmployee',
+      type: 'belongsTo',
       target: 'aiEmployees',
-      through: 'aiConversationsEmployees',
-      foreignKey: 'username',
-      otherKey: 'sessionId',
       targetKey: 'username',
-      sourceKey: 'sessionId',
+      foreignKey: 'aiEmployeeUsername',
     },
     {
       name: 'title',
diff --git a/packages/plugins/@nocobase/plugin-ai/src/server/resource/aiConversations.ts b/packages/plugins/@nocobase/plugin-ai/src/server/resource/aiConversations.ts
index 279a6d48a3..387b069b81 100644
--- a/packages/plugins/@nocobase/plugin-ai/src/server/resource/aiConversations.ts
+++ b/packages/plugins/@nocobase/plugin-ai/src/server/resource/aiConversations.ts
@@ -10,7 +10,6 @@
 import actions, { Context, Next } from '@nocobase/actions';
 import snowflake from '../snowflake';
 import PluginAIServer from '../plugin';
-import { convertUiSchemaToJsonSchema } from '../utils';
 import { Database, Model } from '@nocobase/database';
 
 async function parseInfoMessage(db: Database, aiEmployee: Model, content: Record<string, any>) {
@@ -28,6 +27,9 @@ async function parseInfoMessage(db: Database, aiEmployee: Model, content: Record
   let info = '';
   for (const key in content) {
     const field = infoForm.find((item) => item.name === key);
+    if (!field) {
+      continue;
+    }
     if (field.type === 'blocks') {
       const uiSchemaRepo = db.getRepository('uiSchemas') as any;
       const schema = await uiSchemaRepo.getJsonSchema(content[key]);
@@ -62,13 +64,13 @@ export default {
     },
     async create(ctx: Context, next: Next) {
       const userId = ctx.auth?.user.id;
-      const { aiEmployees } = ctx.action.params.values || {};
+      const { aiEmployee } = ctx.action.params.values || {};
       const repo = ctx.db.getRepository('aiConversations');
       ctx.body = await repo.create({
         values: {
           title: 'New Conversation',
           userId,
-          aiEmployees,
+          aiEmployee,
         },
       });
       await next();
@@ -90,7 +92,7 @@ export default {
       if (!userId) {
         return ctx.throw(403);
       }
-      const { sessionId } = ctx.action.params || {};
+      const { sessionId, cursor } = ctx.action.params || {};
       if (!sessionId) {
         ctx.throw(400);
       }
@@ -103,10 +105,32 @@ export default {
       if (!conversation) {
         ctx.throw(400);
       }
-      ctx.body = await ctx.db.getRepository('aiConversations.messages', sessionId).find({
+      const pageSize = 10;
+      const rows = await ctx.db.getRepository('aiConversations.messages', sessionId).find({
         sort: ['-messageId'],
-        limit: 10,
+        limit: pageSize + 1,
+        ...(cursor
+          ? {
+              filter: {
+                messageId: {
+                  $lt: cursor,
+                },
+              },
+            }
+          : {}),
       });
+      const hasMore = rows.length > pageSize;
+      const data = hasMore ? rows.slice(0, -1) : rows;
+      const newCursor = data.length ? data[data.length - 1].messageId : null;
+      ctx.body = {
+        rows: data.map((row: Model) => ({
+          key: row.messageId,
+          content: row.content,
+          role: row.role,
+        })),
+        hasMore,
+        cursor: newCursor,
+      };
       await next();
     },
     async sendMessages(ctx: Context, next: Next) {
@@ -183,14 +207,8 @@ export default {
           if (msg.content.type === 'info') {
             content = await parseInfoMessage(ctx.db, employee, content);
           }
-          let role = msg.role;
-          if (role === 'info' || role === 'user') {
-            role = 'user';
-          } else {
-            role = 'ai';
-          }
           history.push({
-            role,
+            role: msg.role === 'user' ? 'user' : 'ai',
             content,
           });
         }
@@ -211,9 +229,6 @@ export default {
         ctx.status = 200;
         const userMessages = [];
         for (const msg of messages) {
-          if (msg.role !== 'user' && msg.role !== 'info') {
-            continue;
-          }
           let content = msg.content.content;
           if (msg.content.type === 'info') {
             content = await parseInfoMessage(ctx.db, employee, content);
@@ -222,7 +237,7 @@ export default {
             continue;
           }
           userMessages.push({
-            role: 'user',
+            role: msg.role === 'user' ? 'user' : 'ai',
             content,
           });
         }