[NEW][EE] Allow to filter departments by Business Units on Livechat (#24162)

Co-authored-by: Renato Becker <renato.augusto.becker@gmail.com>
Co-authored-by: Kevin Aleman <kevin.aleman@rocket.chat>

app/livechat/server/api/lib/livechat.js

@@ -22,8 +22,8 @@ async function findTriggers() {
 	}));
 }
 
-export function findDepartments() {
-	return LivechatDepartment.findEnabledWithAgents({
+export function findDepartments(businessUnit) {
+	return LivechatDepartment.findEnabledWithAgentsAndBusinessUnit(businessUnit, {
 		_id: 1,
 		name: 1,
 		showOnRegistration: 1,
@@ -107,10 +107,10 @@ export function normalizeHttpHeaderData(headers = {}) {
 	const httpHeaders = Object.assign({}, headers);
 	return { httpHeaders };
 }
-export async function settings() {
+export async function settings({ businessUnit = '' }) {
 	const initSettings = Livechat.getInitSettings();
 	const triggers = await findTriggers();
-	const departments = findDepartments();
+	const departments = findDepartments(businessUnit);
 	const sound = `${Meteor.absoluteUrl()}sounds/chime.mp3`;
 	const emojis = await EmojiCustom.find().toArray();
 	return {

app/livechat/server/api/v1/config.js

@@ -5,11 +5,12 @@ import { Livechat } from '../../lib/Livechat';
 import { settings, findOpenRoom, getExtraConfigInfo, findAgent } from '../lib/livechat';
 
 API.v1.addRoute('livechat/config', {
-	get() {
+	async get() {
 		try {
 			check(this.queryParams, {
 				token: Match.Maybe(String),
 				department: Match.Maybe(String),
+				businessUnit: Match.Maybe(String),
 			});
 			const enabled = Livechat.enabled();
 
@@ -17,16 +18,17 @@ API.v1.addRoute('livechat/config', {
 				return API.v1.success({ config: { enabled: false } });
 			}
 
-			const config = Promise.await(settings());
+			const { token, department, businessUnit } = this.queryParams;
+
+			const config = await settings({ businessUnit });
 
-			const { token, department } = this.queryParams;
 			const status = Livechat.online(department);
 			const guest = token && Livechat.findGuest(token);
 
 			const room = guest && findOpenRoom(token);
 			const agent = guest && room && room.servedBy && findAgent(room.servedBy._id);
 
-			const extra = Promise.await(getExtraConfigInfo(room));
+			const extra = await getExtraConfigInfo(room);
 			return API.v1.success({
 				config: { ...config, online: status, guest, room, agent, ...extra },
 			});

app/models/server/models/LivechatDepartment.js

@@ -104,6 +104,14 @@ export class LivechatDepartment extends Base {
 		return this.find(query, fields && { fields });
 	}
 
+	findEnabledWithAgentsAndBusinessUnit(_, fields = undefined) {
+		const query = {
+			numAgents: { $gt: 0 },
+			enabled: true,
+		};
+		return this.find(query, fields && { fields });
+	}
+
 	findOneByIdOrName(_idOrName, options) {
 		const query = {
 			$or: [

ee/app/models/server/models/LivechatDepartment.js

@@ -1,4 +1,8 @@
+import { Meteor } from 'meteor/meteor';
+
 import { LivechatDepartment } from '../../../../../app/models/server/models/LivechatDepartment';
+import { LivechatDepartment as LivechatDepartmentModel } from '../../../../../app/models/server';
+import { LivechatUnit } from '../index';
 import { overwriteClassOnLicense } from '../../../license/server';
 
 const { find, findOne, update, remove } = LivechatDepartment.prototype;
@@ -38,6 +42,17 @@ overwriteClassOnLicense('livechat-enterprise', LivechatDepartment, {
 
 		return this.update(query, update, { multi: true });
 	},
+	findEnabledWithAgentsAndBusinessUnit(originalFn, businessUnit, fields = undefined) {
+		if (!businessUnit) {
+			return LivechatDepartmentModel.findEnabledWithAgents(fields);
+		}
+		const unit = LivechatUnit.findOneById(businessUnit, { fields: { _id: 1 } });
+		if (!unit) {
+			throw new Meteor.Error('error-unit-not-found', `Error! No Active Business Unit found with id: ${businessUnit}`);
+		}
+
+		return LivechatDepartmentModel.findByUnitIds([businessUnit], { fields });
+	},
 });
 
 LivechatDepartment.prototype.removeDepartmentFromForwardListById = function (_id) {