Feat: Allow users to enter text in the middle of a chat #3221 (#8569)

### What problem does this PR solve?

Feat: Allow users to enter text in the middle of a chat #3221
### Type of change


- [x] New Feature (non-breaking change which adds functionality)

web/src/components/next-message-item/index.tsx

 import { useSetModalState } from '@/hooks/common-hooks';
 import { IReference, IReferenceChunk } from '@/interfaces/database/chat';
 import classNames from 'classnames';
-import { memo, useCallback, useEffect, useMemo, useState } from 'react';
+import {
+  PropsWithChildren,
+  memo,
+  useCallback,
+  useEffect,
+  useMemo,
+  useState,
+} from 'react';
 
 import {
   useFetchDocumentInfosByIds,
 
 const { Text } = Typography;
 
-interface IProps extends Partial<IRemoveMessageById>, IRegenerateMessage {
+interface IProps
+  extends Partial<IRemoveMessageById>,
+    IRegenerateMessage,
+    PropsWithChildren {
   item: IMessage;
   reference: IReference;
   loading?: boolean;
   showLikeButton = true,
   showLoudspeaker = true,
   visibleAvatar = true,
+  children,
 }: IProps) => {
   const { theme } = useTheme();
   const isAssistant = item.role === MessageType.Assistant;
                   : styles.messageUserText
               }
             >
-              <MarkdownContent
-                loading={loading}
-                content={item.content}
-                reference={reference}
-                clickDocumentButton={clickDocumentButton}
-              ></MarkdownContent>
+              {item.data ? (
+                children
+              ) : (
+                <MarkdownContent
+                  loading={loading}
+                  content={item.content}
+                  reference={reference}
+                  clickDocumentButton={clickDocumentButton}
+                ></MarkdownContent>
+              )}
             </div>
             {isAssistant && referenceDocumentList.length > 0 && (
               <List

web/src/hooks/logic-hooks.ts

       if (idx !== -1) {
         return pre.map((x) => {
           if (x.id === answer.id) {
-            return { ...x, content: answer.answer };
+            return { ...x, ...answer, content: answer.answer };
           }
           return x;
         });

web/src/hooks/use-send-message.ts

 import { Authorization } from '@/constants/authorization';
+import { BeginQuery } from '@/pages/agent/interface';
 import api from '@/utils/api';
 import { getAuthorization } from '@/utils/authorization-util';
 import { EventSourceParserStream } from 'eventsource-parser/stream';
   created_at: number;
 }
 
+export interface IInputData {
+  content: string;
+  inputs: Record<string, BeginQuery>;
+  tips: string;
+}
+
 export interface IMessageData {
   content: string;
 }
 
 export type IMessageEvent = IAnswerEvent<IMessageData>;
 
+export type IInputEvent = IAnswerEvent<IInputData>;
+
 export type IChatEvent = INodeEvent | IMessageEvent;
 
 export type IEventList = Array<IChatEvent>;

web/src/interfaces/database/chat.ts

   prompt?: string;
   id?: string;
   audio_binary?: string;
+  data?: any;
 }
 
 export interface IReferenceChunk {
   prompt?: string;
   id?: string;
   audio_binary?: string;
+  data?: any;
 }
 
 export interface Docagg {

web/src/pages/agent/canvas/node/begin-node.tsx

 import { IBeginNode } from '@/interfaces/database/flow';
+import { cn } from '@/lib/utils';
 import { NodeProps, Position } from '@xyflow/react';
-import { Flex } from 'antd';
 import get from 'lodash/get';
 import { memo } from 'react';
 import { useTranslation } from 'react-i18next';
 // TODO: do not allow other nodes to connect to this node
 function InnerBeginNode({ data, id }: NodeProps<IBeginNode>) {
   const { t } = useTranslation();
-  const query: BeginQuery[] = get(data, 'form.query', []);
+  const inputs: Record<string, BeginQuery> = get(data, 'form.inputs', {});
 
   return (
     <NodeWrapper>
           {t(`flow.begin`)}
         </div>
       </section>
-      <Flex gap={8} vertical className={styles.generateParameters}>
-        {query.map((x, idx) => {
-          const Icon = BeginQueryTypeIconMap[x.type as BeginQueryType];
+      <section className={cn(styles.generateParameters, 'flex gap-2 flex-col')}>
+        {Object.entries(inputs).map(([key, val], idx) => {
+          const Icon = BeginQueryTypeIconMap[val.type as BeginQueryType];
           return (
-            <Flex
+            <div
               key={idx}
-              align="center"
-              gap={6}
-              className={styles.conditionBlock}
+              className={cn(styles.conditionBlock, 'flex gap-1.5 items-center')}
             >
               <Icon className="size-4" />
-              <label htmlFor="">{x.key}</label>
-              <span className={styles.parameterValue}>{x.name}</span>
-              <span className="flex-1">{x.optional ? 'Yes' : 'No'}</span>
-            </Flex>
+              <label htmlFor="">{key}</label>
+              <span className={styles.parameterValue}>{val.name}</span>
+              <span className="flex-1">{val.optional ? 'Yes' : 'No'}</span>
+            </div>
           );
         })}
-      </Flex>
+      </section>
     </NodeWrapper>
   );
 }

web/src/pages/agent/chat/box.tsx

 import { useFetchAgent } from '@/hooks/use-agent-request';
 import { useFetchUserInfo } from '@/hooks/user-setting-hooks';
 import { buildMessageUuidWithRole } from '@/utils/chat';
+import { InputForm } from './input-form';
 
 const AgentChatBox = () => {
   const {
     derivedMessages,
     reference,
     stopOutputMessage,
+    send,
   } = useSendNextMessage();
 
   const { visible, hideModal, documentId, selectedChunk, clickDocumentButton } =
                     index={i}
                     showLikeButton={false}
                     sendLoading={sendLoading}
-                  ></MessageItem>
+                  >
+                    <InputForm send={send} message={message}></InputForm>
+                  </MessageItem>
                 );
               })}
             </Spin>

web/src/pages/agent/chat/hooks.ts

 import { useFetchAgent } from '@/hooks/use-agent-request';
 import {
   IEventList,
+  IInputEvent,
   IMessageEvent,
   MessageEventType,
   useSendMessageBySSE,
   };
 }
 
+function findInputFromList(eventList: IEventList) {
+  const inputEvent = eventList.find(
+    (x) => x.event === MessageEventType.UserInputs,
+  ) as IInputEvent;
+
+  if (!inputEvent) {
+    return {};
+  }
+
+  return {
+    id: inputEvent?.message_id,
+    data: inputEvent?.data,
+  };
+}
+
 const useGetBeginNodePrologue = () => {
   const getNode = useGraphStore((state) => state.getNode);
 
 
   useEffect(() => {
     const { content, id } = findMessageFromList(answerList);
+    const inputAnswer = findInputFromList(answerList);
     if (answerList.length > 0) {
       addNewestOneAnswer({
         answer: content,
         id: id,
+        ...inputAnswer,
       });
     }
   }, [answerList, addNewestOneAnswer]);
     ref,
     removeMessageById,
     stopOutputMessage,
+    send,
   };
 };

web/src/pages/agent/chat/input-form.tsx

+'use client';
+
+import { zodResolver } from '@hookform/resolvers/zod';
+import { useForm } from 'react-hook-form';
+import { toast } from 'sonner';
+import { z } from 'zod';
+
+import { Button } from '@/components/ui/button';
+import {
+  Form,
+  FormControl,
+  FormField,
+  FormItem,
+  FormLabel,
+  FormMessage,
+} from '@/components/ui/form';
+import { Input } from '@/components/ui/input';
+import { Message } from '@/interfaces/database/chat';
+import { get } from 'lodash';
+import { useParams } from 'umi';
+import { useSendNextMessage } from './hooks';
+
+const FormSchema = z.object({
+  username: z.string().min(2, {
+    message: 'Username must be at least 2 characters.',
+  }),
+});
+
+type InputFormProps = Pick<ReturnType<typeof useSendNextMessage>, 'send'> & {
+  message: Message;
+};
+
+export function InputForm({ send, message }: InputFormProps) {
+  const form = useForm<z.infer<typeof FormSchema>>({
+    resolver: zodResolver(FormSchema),
+    defaultValues: {
+      username: '',
+    },
+  });
+
+  const { id: canvasId } = useParams();
+
+  function onSubmit(data: z.infer<typeof FormSchema>) {
+    const inputs = get(message, 'data.inputs', {});
+
+    const nextInputs = Object.entries(inputs).reduce((pre, [key, val]) => {
+      pre[key] = { ...val, value: data.username };
+
+      return pre;
+    }, {});
+
+    send({
+      inputs: nextInputs,
+      id: canvasId,
+    });
+
+    toast('You submitted the following values', {
+      description: (
+        <pre className="mt-2 w-[320px] rounded-md bg-neutral-950 p-4">
+          <code className="text-white">{JSON.stringify(data, null, 2)}</code>
+        </pre>
+      ),
+    });
+  }
+
+  return (
+    <Form {...form}>
+      <form onSubmit={form.handleSubmit(onSubmit)} className="w-2/3 space-y-6">
+        <FormField
+          control={form.control}
+          name="username"
+          render={({ field }) => (
+            <FormItem>
+              <FormLabel>Username</FormLabel>
+              <FormControl>
+                <Input placeholder="shadcn" {...field} />
+              </FormControl>
+              <FormMessage />
+            </FormItem>
+          )}
+        />
+        <Button type="submit">Submit</Button>
+      </form>
+    </Form>
+  );
+}

web/src/pages/agent/form/begin-form/use-edit-query.ts

       const nextQuery: BeginQuery[] =
         index > -1 ? inputs.toSpliced(index, 1, record) : [...inputs, record];
 
-      form.setValue('inputs', nextQuery, {
-        shouldDirty: true,
-        shouldTouch: true,
-      });
+      form.setValue('inputs', nextQuery);
 
       hideModal();
     },
   const handleDeleteRecord = useCallback(
     (idx: number) => {
       const inputs = form?.getValues('inputs') || [];
-      const nextQuery = inputs.filter(
+      const nextInputs = inputs.filter(
         (item: BeginQuery, index: number) => index !== idx,
       );
 
-      form.setValue('inputs', nextQuery, { shouldDirty: true });
+      form.setValue('inputs', nextInputs);
     },
     [form],
   );

web/src/pages/agent/form/begin-form/use-watch-change.ts

   const updateNodeForm = useGraphStore((state) => state.updateNodeForm);
 
   useEffect(() => {
-    if (id && form?.formState.isDirty) {
-      values = form?.getValues();
+    if (id) {
+      values = form?.getValues() || {};
 
       const nextValues = {
         ...values,

web/src/pages/agent/form/iteration-form/use-watch-form-change.ts

 import useGraphStore from '../../store';
 import { OutputArray, OutputObject } from './interface';
 
-function transferToObject(list: OutputArray) {
+export function transferToObject(list: OutputArray) {
   return list.reduce<OutputObject>((pre, cur) => {
     pre[cur.name] = { ref: cur.ref, type: cur.type };
     return pre;

web/src/pages/agent/form/user-fill-up-form/use-watch-change.ts

   const updateNodeForm = useGraphStore((state) => state.updateNodeForm);
 
   useEffect(() => {
-    if (id && form?.formState.isDirty) {
-      values = form?.getValues();
+    // TODO: This should only be executed when the form changes
+    if (id) {
+      values = form?.getValues() || {};
 
       const nextValues = {
         ...values,