feat(server): custom library scanning interval (#4390)

* add automatic library scan config options

* add validation

* open api

* use CronJob instead of cron-validator

* fix tests

* catch potential error of the library scan initialization

* better description for input field

* move library scan job initialization to server app service

* fix tests

* add comments to all parameters of cronjob contructor

* make scan a child of a more general library object

* open api

* chore: cleanup

* move cronjob handling to job repoistory

* web: select for common cron expressions

* fix open api

* fix tests

* put scanning settings in nested accordion

* fix system config validation

* refactor, tests

---------

Co-authored-by: Jason Rasmussen <jrasm91@gmail.com>

server/test/repositories/job.repository.mock.ts

@@ -3,6 +3,9 @@ import { IJobRepository } from '@app/domain';
 export const newJobRepositoryMock = (): jest.Mocked<IJobRepository> => {
   return {
     addHandler: jest.fn(),
+    addCronJob: jest.fn(),
+    deleteCronJob: jest.fn(),
+    updateCronJob: jest.fn(),
     setConcurrency: jest.fn(),
     empty: jest.fn(),
     pause: jest.fn(),

server/test/test-utils.ts

@@ -49,6 +49,10 @@ export const testApp = {
       .overrideProvider(IJobRepository)
       .useValue({
         addHandler: (_queueName: QueueName, _concurrency: number, handler: JobItemHandler) => (_handler = handler),
+        addCronJob: jest.fn(),
+        updateCronJob: jest.fn(),
+        deleteCronJob: jest.fn(),
+        validateCronExpression: jest.fn(),
         queue: (item: JobItem) => jobs && _handler(item),
         resume: jest.fn(),
         empty: jest.fn(),