RocketChat/Rocket.Chat

import { Team } from '@rocket.chat/core-services';
import type { MessageMention } from '@rocket.chat/core-typings';

import { callbacks } from '../../../lib/callbacks';
import { settings } from '../../settings/server';

const beforeGetMentions = async (mentionIds: string[], teamMentions: MessageMention[]): Promise<string[]> => {
    if (!teamMentions.length) {
        return mentionIds;
    }

    const teamsIds = teamMentions.map(({ _id }) => _id);
    const members = await Team.getMembersByTeamIds(teamsIds, { projection: { userId: 1 } });
    return [...new Set([...mentionIds, ...members.map(({ userId }) => userId)])];
};

settings.watch<boolean>('Troubleshoot_Disable_Teams_Mention', (value) => {
    if (value) {
        callbacks.remove('beforeGetMentions', 'before-get-mentions-get-teams');
    } else {
        callbacks.add('beforeGetMentions', beforeGetMentions, callbacks.priority.MEDIUM, 'before-get-mentions-get-teams');
    }
});