RocketChat/Rocket.Chat

import type { IMessage } from '@rocket.chat/core-typings';
import { Markup } from '@rocket.chat/gazzodown';
import { parse } from '@rocket.chat/message-parser';
import type { ReactElement } from 'react';
import React from 'react';

import { filterMarkdown } from '../../app/markdown/lib/markdown';
import GazzodownText from '../components/GazzodownText';

export function normalizeThreadMessage({ ...message }: Readonly<Pick<IMessage, 'msg' | 'mentions' | 'attachments'>>): ReactElement | null {
    if (message.msg) {
        message.msg = filterMarkdown(message.msg);
        delete message.mentions;

        const tokens = message.msg ? parse(message.msg, { emoticons: true }) : undefined;

        if (!tokens) {
            return null;
        }

        return (
            <GazzodownText>
                <Markup tokens={tokens} />
            </GazzodownText>
        );
    }

    if (message.attachments) {
        const attachment = message.attachments.find((attachment) => attachment.title || attachment.description);

        if (attachment?.description) {
            return <>{attachment.description}</>;
        }

        if (attachment?.title) {
            return <>{attachment.title}</>;
        }
    }

    return null;
}