Regression: Omni-chats not getting routed automatically to bots (#26267)

apps/meteor/app/livechat/server/hooks/beforeDelegateAgent.js

@@ -14,10 +14,10 @@ callbacks.add(
 		}
 
 		if (department) {
-			return LivechatDepartmentAgents.getNextBotForDepartment(department);
+			return Promise.await(LivechatDepartmentAgents.getNextBotForDepartment(department));
 		}
 
-		return Users.getNextBotAgent();
+		return Promise.await(Users.getNextBotAgent());
 	},
 	callbacks.priority.HIGH,
 	'livechat-before-delegate-agent',

apps/meteor/app/models/server/models/LivechatDepartmentAgents.js

@@ -155,7 +155,7 @@ export class LivechatDepartmentAgents extends Base {
 		return this.find(query);
 	}
 
-	getNextBotForDepartment(departmentId, ignoreAgentId) {
+	async getNextBotForDepartment(departmentId, ignoreAgentId) {
 		const agents = this.findByDepartmentId(departmentId).fetch();
 
 		if (agents.length === 0) {
@@ -184,7 +184,7 @@ export class LivechatDepartmentAgents extends Base {
 			},
 		};
 
-		const bot = this.model.rawCollection().findOneAndUpdate(query, update, { sort, returnNewDocument: 'after' });
+		const bot = await this.model.rawCollection().findOneAndUpdate(query, update, { sort, returnNewDocument: 'after' });
 		if (bot && bot.value) {
 			return {
 				agentId: bot.value.agentId,

apps/meteor/app/models/server/models/Users.js

@@ -239,7 +239,7 @@ export class Users extends Base {
 		return [];
 	}
 
-	getNextBotAgent(ignoreAgentId) {
+	async getNextBotAgent(ignoreAgentId) {
 		// TODO: Create class Agent
 		const query = {
 			roles: {
@@ -259,7 +259,7 @@ export class Users extends Base {
 			},
 		};
 
-		const user = this.model.rawCollection().findOneAndUpdate(query, update, { sort, returnDocument: 'after' });
+		const user = await this.model.rawCollection().findOneAndUpdate(query, update, { sort, returnDocument: 'after' });
 		if (user && user.value) {
 			return {
 				agentId: user.value._id,

apps/meteor/lib/callbacks.ts

@@ -105,7 +105,7 @@ type ChainedCallbackSignatures = {
 	};
 	'livechat.applySimultaneousChatRestrictions': (_: undefined, params: { departmentId?: ILivechatDepartmentRecord['_id'] }) => undefined;
 	'livechat.beforeCloseRoom': (params: { room: IRoom; options: unknown }) => { room: IRoom; options: unknown };
-	'livechat.beforeDelegateAgent': (agent: ILivechatAgent, params: { department?: ILivechatDepartmentRecord }) => ILivechatAgent;
+	'livechat.beforeDelegateAgent': (agent: ILivechatAgent, params: { department?: ILivechatDepartmentRecord }) => ILivechatAgent | null;
 	'livechat.applyDepartmentRestrictions': (
 		query: FilterOperators<ILivechatDepartmentRecord>,
 		params: { userId: IUser['_id'] },