Rocket.Chat/apps/meteor/app/utils/server/lib/getUserPreference.ts

import { Users } from '@rocket.chat/models';
import type { IUser } from '@rocket.chat/core-typings';

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

/**
 * @summary Get a user preference
 * @param {String} userId The user ID
 * @param {String} preference The preference name
 * @param {unknown?} defaultValue The default value
 * @returns {unknown} The preference value
 */
export const getUserPreference = async (user: IUser | string, key: string, defaultValue: any = undefined) => {
	let preference;
	if (typeof user === 'string') {
		const dbUser = await Users.findOneById(user, { projection: { [`settings.preferences.${key}`]: 1 } });
		if (dbUser) {
			user = dbUser;
		}
	}
	if (typeof user === 'string') {
		return defaultValue;
	}

	if (user?.settings?.preferences?.hasOwnProperty(key)) {
		preference = user.settings.preferences[key];
	} else if (defaultValue === undefined) {
		preference = settings.get(`Accounts_Default_User_Preferences_${key}`);
	}

	return preference !== undefined ? preference : defaultValue;
};