RocketChat/Rocket.Chat

import type { IRoom } from '@rocket.chat/core-typings';
import type { ServerMethods } from '@rocket.chat/ddp-client';
import { Subscriptions, Rooms } from '@rocket.chat/models';
import { check } from 'meteor/check';
import { Meteor } from 'meteor/meteor';

import { hasPermissionAsync } from '../../app/authorization/server/functions/hasPermission';

declare module '@rocket.chat/ddp-client' {
    // eslint-disable-next-line @typescript-eslint/naming-convention
    interface ServerMethods {
        getRoomNameById(rid: IRoom['_id']): Promise<string | undefined>;
    }
}

Meteor.methods<ServerMethods>({
    async getRoomNameById(rid) {
        check(rid, String);
        const userId = Meteor.userId();
        if (!userId) {
            throw new Meteor.Error('error-invalid-user', 'Invalid user', {
                method: 'getRoomNameById',
            });
        }

        const room = await Rooms.findOneById(rid);

        if (room == null) {
            throw new Meteor.Error('error-not-allowed', 'Not allowed', {
                method: 'getRoomNameById',
            });
        }

        const subscription = await Subscriptions.findOneByRoomIdAndUserId(rid, userId, {
            projection: { _id: 1 },
        });
        if (subscription) {
            return room.name;
        }

        if (room.t !== 'c' || (await hasPermissionAsync(userId, 'view-c-room')) !== true) {
            throw new Meteor.Error('error-not-allowed', 'Not allowed', {
                method: 'getRoomNameById',
            });
        }

        return room.name;
    },
});