Rocket.Chat/app/livechat/server/api/v1/transfer.js

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

import { LivechatRooms } from '../../../../models';
import { API } from '../../../../api/server';
import { findLivechatTransferHistory } from '../lib/transfer';

API.v1.addRoute('livechat/transfer.history/:rid', { authRequired: true }, {
	get() {
		check(this.urlParams, {
			rid: String,
		});

		const { rid } = this.urlParams;

		const room = LivechatRooms.findOneById(rid, { _id: 1 });
		if (!room) {
			throw new Meteor.Error('invalid-room');
		}

		const { offset, count } = this.getPaginationItems();
		const { sort } = this.parseJsonQuery();

		const history = Promise.await(findLivechatTransferHistory({
			userId: this.userId,
			rid,
			pagination: {
				offset,
				count,
				sort,
			},
		}));

		return API.v1.success(history);
	},
});