Rocket.Chat/app/livechat/server/methods/saveInfo.js

import { Meteor } from 'meteor/meteor';
import { Match, check } from 'meteor/check';

import { hasPermission } from '../../../authorization';
import { LivechatRooms } from '../../../models';
import { callbacks } from '../../../callbacks';
import { Livechat } from '../lib/Livechat';

Meteor.methods({
	'livechat:saveInfo'(guestData, roomData) {
		const userId = Meteor.userId();

		if (!userId || !hasPermission(userId, 'view-l-room')) {
			throw new Meteor.Error('error-not-allowed', 'Not allowed', { method: 'livechat:saveInfo' });
		}

		check(guestData, Match.ObjectIncluding({
			_id: String,
			name: Match.Optional(String),
			email: Match.Optional(String),
			phone: Match.Optional(String),
			livechatData: Match.Optional(Object),
		}));

		check(roomData, Match.ObjectIncluding({
			_id: String,
			topic: Match.Optional(String),
			tags: Match.Optional([String]),
			livechatData: Match.Optional(Object),
		}));

		const room = LivechatRooms.findOneById(roomData._id);
		if (room == null || room.t !== 'l') {
			throw new Meteor.Error('error-invalid-room', 'Invalid room', { method: 'livechat:saveInfo' });
		}

		if ((!room.servedBy || room.servedBy._id !== userId) && !hasPermission(userId, 'save-others-livechat-room-info')) {
			throw new Meteor.Error('error-not-allowed', 'Not allowed', { method: 'livechat:saveInfo' });
		}

		if (room.sms) {
			delete guestData.phone;
		}

		const ret = Livechat.saveGuest(guestData, userId) && Livechat.saveRoomInfo(roomData, guestData, userId);

		const user = Meteor.users.findOne({ _id: userId }, { fields: { _id: 1, username: 1 } });

		Meteor.defer(() => {
			callbacks.run('livechat.saveInfo', LivechatRooms.findOneById(roomData._id), { user, oldRoom: room });
		});

		return ret;
	},
});