RocketChat/Rocket.Chat

import type { IMessage } from '@rocket.chat/core-typings';
import { escapeHTML } from '@rocket.chat/string-helpers';
import { Meteor } from 'meteor/meteor';

import { emojiParser } from '../../../emoji/client/emojiParser.js';
import { filterMarkdown } from '../../../markdown/lib/markdown';
import { MentionsParser } from '../../../mentions/lib/MentionsParser';
import { Users } from '../../../models/client';
import { settings } from '../../../settings/client';

export function normalizeThreadTitle({ ...message }: Readonly<IMessage>) {
    if (message.msg) {
        const filteredMessage = filterMarkdown(escapeHTML(message.msg));
        if (!message.channels && !message.mentions) {
            return filteredMessage;
        }
        const uid = Meteor.userId();
        const me = (uid && Users.findOne(uid, { fields: { username: 1 } })?.username) || '';
        const pattern = settings.get('UTF8_User_Names_Validation');
        const useRealName = settings.get('UI_Use_Real_Name');

        const instance = new MentionsParser({
            pattern: () => pattern,
            useRealName: () => useRealName,
            me: () => me,
            userTemplate: ({ label }) => `<strong> ${label} </strong>`,
            roomTemplate: ({ prefix, mention }) => `${prefix}<strong> ${mention} </strong>`,
        });
        const { html } = emojiParser({ html: filteredMessage });
        return instance.parse({ ...message, msg: filteredMessage, html }).html;
    }

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

        if (attachment?.description) {
            return escapeHTML(attachment.description);
        }

        if (attachment?.title) {
            return escapeHTML(attachment.title);
        }
    }
}