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

import { ReactComponent as AssistantIcon } from '@/assets/svg/assistant.svg';
import { MessageType } from '@/constants/chat';
import { useSetModalState, useTranslate } from '@/hooks/common-hooks';
import { useSelectFileThumbnails } from '@/hooks/knowledge-hooks';
import { IReference, Message } from '@/interfaces/database/chat';
import { IChunk } from '@/interfaces/database/knowledge';
import classNames from 'classnames';
import { memo, useCallback, useEffect, useMemo, useState } from 'react';

import {
  useFetchDocumentInfosByIds,
  useFetchDocumentThumbnailsByIds,
} from '@/hooks/document-hooks';
import MarkdownContent from '@/pages/chat/markdown-content';
import { getExtension, isImage } from '@/utils/document-util';
import { Avatar, Button, Flex, List, Typography } from 'antd';
import IndentedTreeModal from '../indented-tree/modal';
import NewDocumentLink from '../new-document-link';
import SvgIcon from '../svg-icon';
import styles from './index.less';

const { Text } = Typography;

interface IProps {
  item: Message;
  reference: IReference;
  loading?: boolean;
  nickname?: string;
  avatar?: string;
  clickDocumentButton?: (documentId: string, chunk: IChunk) => void;
}

const MessageItem = ({
  item,
  reference,
  loading = false,
  avatar = '',
  nickname = '',
  clickDocumentButton,
}: IProps) => {
  const isAssistant = item.role === MessageType.Assistant;
  const isUser = item.role === MessageType.User;
  const { t } = useTranslate('chat');
  const fileThumbnails = useSelectFileThumbnails();
  const { data: documentList, setDocumentIds } = useFetchDocumentInfosByIds();
  const { data: documentThumbnails, setDocumentIds: setIds } =
    useFetchDocumentThumbnailsByIds();
  const { visible, hideModal, showModal } = useSetModalState();
  const [clickedDocumentId, setClickedDocumentId] = useState('');

  const referenceDocumentList = useMemo(() => {
    return reference?.doc_aggs ?? [];
  }, [reference?.doc_aggs]);

  const content = useMemo(() => {
    let text = item.content;
    if (text === '') {
      text = t('searching');
    }
    return loading ? text?.concat('~~2$$') : text;
  }, [item.content, loading, t]);

  const handleUserDocumentClick = useCallback(
    (id: string) => () => {
      setClickedDocumentId(id);
      showModal();
    },
    [showModal],
  );

  useEffect(() => {
    const ids = item?.doc_ids ?? [];
    if (ids.length) {
      setDocumentIds(ids);
      const documentIds = ids.filter((x) => !(x in fileThumbnails));
      if (documentIds.length) {
        setIds(documentIds);
      }
    }
  }, [item.doc_ids, setDocumentIds, setIds, fileThumbnails]);

  return (
    <div
      className={classNames(styles.messageItem, {
        [styles.messageItemLeft]: item.role === MessageType.Assistant,
        [styles.messageItemRight]: item.role === MessageType.User,
      })}
    >
      <section
        className={classNames(styles.messageItemSection, {
          [styles.messageItemSectionLeft]: item.role === MessageType.Assistant,
          [styles.messageItemSectionRight]: item.role === MessageType.User,
        })}
      >
        <div
          className={classNames(styles.messageItemContent, {
            [styles.messageItemContentReverse]: item.role === MessageType.User,
          })}
        >
          {item.role === MessageType.User ? (
            <Avatar
              size={40}
              src={
                avatar ??
                'https://zos.alipayobjects.com/rmsportal/jkjgkEfvpUPVyRjUImniVslZfWPnJuuZ.png'
              }
            />
          ) : (
            <AssistantIcon></AssistantIcon>
          )}
          <Flex vertical gap={8} flex={1}>
            <b>{isAssistant ? '' : nickname}</b>
            <div
              className={
                isAssistant ? styles.messageText : styles.messageUserText
              }
            >
              <MarkdownContent
                content={content}
                reference={reference}
                clickDocumentButton={clickDocumentButton}
              ></MarkdownContent>
            </div>
            {isAssistant && referenceDocumentList.length > 0 && (
              <List
                bordered
                dataSource={referenceDocumentList}
                renderItem={(item) => {
                  const fileThumbnail = fileThumbnails[item.doc_id];

                  const fileExtension = getExtension(item.doc_name);
                  return (
                    <List.Item>
                      <Flex gap={'small'} align="center">
                        {fileThumbnail ? (
                          <img
                            src={fileThumbnail}
                            className={styles.thumbnailImg}
                          ></img>
                        ) : (
                          <SvgIcon
                            name={`file-icon/${fileExtension}`}
                            width={24}
                          ></SvgIcon>
                        )}

                        <NewDocumentLink
                          documentId={item.doc_id}
                          documentName={item.doc_name}
                          prefix="document"
                        >
                          {item.doc_name}
                        </NewDocumentLink>
                      </Flex>
                    </List.Item>
                  );
                }}
              />
            )}
            {isUser && documentList.length > 0 && (
              <List
                bordered
                dataSource={documentList}
                renderItem={(item) => {
                  const fileThumbnail =
                    documentThumbnails[item.id] || fileThumbnails[item.id];
                  const fileExtension = getExtension(item.name);
                  return (
                    <List.Item>
                      <Flex gap={'small'} align="center">
                        {fileThumbnail ? (
                          <img
                            src={fileThumbnail}
                            className={styles.thumbnailImg}
                          ></img>
                        ) : (
                          <SvgIcon
                            name={`file-icon/${fileExtension}`}
                            width={24}
                          ></SvgIcon>
                        )}

                        {isImage(fileExtension) ? (
                          <NewDocumentLink
                            documentId={item.id}
                            documentName={item.name}
                            prefix="document"
                          >
                            {item.name}
                          </NewDocumentLink>
                        ) : (
                          <Button
                            type={'text'}
                            onClick={handleUserDocumentClick(item.id)}
                          >
                            <Text
                              style={{ maxWidth: '40vw' }}
                              ellipsis={{ tooltip: item.name }}
                            >
                              {item.name}
                            </Text>
                          </Button>
                        )}
                      </Flex>
                    </List.Item>
                  );
                }}
              />
            )}
          </Flex>
        </div>
      </section>
      {visible && (
        <IndentedTreeModal
          visible={visible}
          hideModal={hideModal}
          documentId={clickedDocumentId}
        ></IndentedTreeModal>
      )}
    </div>
  );
};

export default memo(MessageItem);