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import Image from '@/components/image';
import SvgIcon from '@/components/svg-icon';
import { useSelectFileThumbnails } from '@/hooks/knowledge-hooks';
import { IReference } from '@/interfaces/database/chat';
import { IChunk } from '@/interfaces/database/knowledge';
import { getExtension } from '@/utils/document-util';
import { InfoCircleOutlined } from '@ant-design/icons';
import { Button, Flex, Popover, Space } from 'antd';
import DOMPurify from 'dompurify';
import { useCallback } from 'react';
import Markdown from 'react-markdown';
import reactStringReplace from 'react-string-replace';
import SyntaxHighlighter from 'react-syntax-highlighter';
import remarkGfm from 'remark-gfm';
import { visitParents } from 'unist-util-visit-parents';
import styles from './index.less';
const reg = /(#{2}\d+\${2})/g;
const curReg = /(~{2}\d+\${2})/g;
const getChunkIndex = (match: string) => Number(match.slice(2, -2));
// TODO: The display of the table is inconsistent with the display previously placed in the MessageItem.
const MarkdownContent = ({
reference,
clickDocumentButton,
content,
}: {
content: string;
reference: IReference;
clickDocumentButton?: (documentId: string, chunk: IChunk) => void;
}) => {
const fileThumbnails = useSelectFileThumbnails();
const handleDocumentButtonClick = useCallback(
(documentId: string, chunk: IChunk, isPdf: boolean) => () => {
if (!isPdf) {
return;
}
clickDocumentButton?.(documentId, chunk);
},
[clickDocumentButton],
);
const rehypeWrapReference = () => {
return function wrapTextTransform(tree: any) {
visitParents(tree, 'text', (node, ancestors) => {
const latestAncestor = ancestors.at(-1);
if (
latestAncestor.tagName !== 'custom-typography' &&
latestAncestor.tagName !== 'code'
) {
node.type = 'element';
node.tagName = 'custom-typography';
node.properties = {};
node.children = [{ type: 'text', value: node.value }];
}
});
};
};
const getPopoverContent = useCallback(
(chunkIndex: number) => {
const chunks = reference?.chunks ?? [];
const chunkItem = chunks[chunkIndex];
const document = reference?.doc_aggs?.find(
(x) => x?.doc_id === chunkItem?.doc_id,
);
const documentId = document?.doc_id;
const fileThumbnail = documentId ? fileThumbnails[documentId] : '';
const fileExtension = documentId ? getExtension(document?.doc_name) : '';
const imageId = chunkItem?.img_id;
return (
<Flex
key={chunkItem?.chunk_id}
gap={10}
className={styles.referencePopoverWrapper}
>
{imageId && (
<Popover
placement="left"
content={
<Image
id={imageId}
className={styles.referenceImagePreview}
></Image>
}
>
<Image
id={imageId}
className={styles.referenceChunkImage}
></Image>
</Popover>
)}
<Space direction={'vertical'}>
<div
dangerouslySetInnerHTML={{
__html: DOMPurify.sanitize(chunkItem?.content_with_weight),
}}
className={styles.chunkContentText}
></div>
{documentId && (
<Flex gap={'small'}>
{fileThumbnail ? (
<img src={fileThumbnail} alt="" />
) : (
<SvgIcon
name={`file-icon/${fileExtension}`}
width={24}
></SvgIcon>
)}
<Button
type="link"
className={styles.documentLink}
onClick={handleDocumentButtonClick(
documentId,
chunkItem,
fileExtension === 'pdf',
)}
>
{document?.doc_name}
</Button>
</Flex>
)}
</Space>
</Flex>
);
},
[reference, fileThumbnails, handleDocumentButtonClick],
);
const renderReference = useCallback(
(text: string) => {
let replacedText = reactStringReplace(text, reg, (match, i) => {
const chunkIndex = getChunkIndex(match);
return (
<Popover content={getPopoverContent(chunkIndex)}>
<InfoCircleOutlined key={i} className={styles.referenceIcon} />
</Popover>
);
});
replacedText = reactStringReplace(replacedText, curReg, (match, i) => (
<span className={styles.cursor} key={i}></span>
));
return replacedText;
},
[getPopoverContent],
);
return (
<Markdown
rehypePlugins={[rehypeWrapReference]}
remarkPlugins={[remarkGfm]}
components={
{
'custom-typography': ({ children }: { children: string }) =>
renderReference(children),
code(props: any) {
const { children, className, node, ...rest } = props;
const match = /language-(\w+)/.exec(className || '');
return match ? (
<SyntaxHighlighter {...rest} PreTag="div" language={match[1]}>
{String(children).replace(/\n$/, '')}
</SyntaxHighlighter>
) : (
<code {...rest} className={className}>
{children}
</code>
);
},
} as any
}
>
{content}
</Markdown>
);
};
export default MarkdownContent;
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