feat: add subscription manager to handle subscription sharing (#1517)

* feat: add subscription manager to handle subscription sharing

* fix(services): add missing methods to the interface

* fix(services): add subscription manager specs

* feat(snjs): add subscriptions e2e tests

* fix(snjs): add wait in subscription cancelling test

* fix(snjs): checking for canceled invitations in tests

* fix(snjs): add e2e test for restored limit of subscription invitations

* chore(lint): fix linter issues

packages/services/src/Domain/Subscription/SubscriptionManager.spec.ts

@@ -0,0 +1,83 @@
+import { SubscriptionApiServiceInterface } from '@standardnotes/api'
+import { Invitation } from '@standardnotes/models'
+import { InternalEventBusInterface } from '..'
+import { SubscriptionManager } from './SubscriptionManager'
+
+describe('SubscriptionManager', () => {
+  let subscriptionApiService: SubscriptionApiServiceInterface
+  let internalEventBus: InternalEventBusInterface
+
+  const createManager = () => new SubscriptionManager(subscriptionApiService, internalEventBus)
+
+  beforeEach(() => {
+    subscriptionApiService = {} as jest.Mocked<SubscriptionApiServiceInterface>
+    subscriptionApiService.cancelInvite = jest.fn()
+    subscriptionApiService.invite = jest.fn()
+    subscriptionApiService.listInvites = jest.fn()
+
+    internalEventBus = {} as jest.Mocked<InternalEventBusInterface>
+  })
+
+  it('should invite user by email to a shared subscription', async () => {
+    subscriptionApiService.invite = jest.fn().mockReturnValue({ data: { success: true } })
+
+    expect(await createManager().inviteToSubscription('test@test.te')).toBeTruthy()
+  })
+
+  it('should not invite user by email if the api fails to do so', async () => {
+    subscriptionApiService.invite = jest.fn().mockReturnValue({ data: { error: 'foobar' } })
+
+    expect(await createManager().inviteToSubscription('test@test.te')).toBeFalsy()
+  })
+
+  it('should not invite user by email if the api throws an error', async () => {
+    subscriptionApiService.invite = jest.fn().mockImplementation(() => {
+      throw new Error('Oops')
+    })
+
+    expect(await createManager().inviteToSubscription('test@test.te')).toBeFalsy()
+  })
+
+  it('should cancel invite to a shared subscription', async () => {
+    subscriptionApiService.cancelInvite = jest.fn().mockReturnValue({ data: { success: true } })
+
+    expect(await createManager().cancelInvitation('1-2-3')).toBeTruthy()
+  })
+
+  it('should not cancel invite if the api fails to do so', async () => {
+    subscriptionApiService.cancelInvite = jest.fn().mockReturnValue({ data: { error: 'foobar' } })
+
+    expect(await createManager().cancelInvitation('1-2-3')).toBeFalsy()
+  })
+
+  it('should not cancel invite if the api throws an error', async () => {
+    subscriptionApiService.cancelInvite = jest.fn().mockImplementation(() => {
+      throw new Error('Oops')
+    })
+
+    expect(await createManager().cancelInvitation('1-2-3')).toBeFalsy()
+  })
+
+  it('should list invites to a shared subscription', async () => {
+    const invitation = {
+      uuid: '1-2-3',
+    } as jest.Mocked<Invitation>
+    subscriptionApiService.listInvites = jest.fn().mockReturnValue({ data: { invitations: [invitation] } })
+
+    expect(await createManager().listSubscriptionInvitations()).toEqual([invitation])
+  })
+
+  it('should return an empty list of invites if the api fails to fetch them', async () => {
+    subscriptionApiService.listInvites = jest.fn().mockReturnValue({ data: { error: 'foobar' } })
+
+    expect(await createManager().listSubscriptionInvitations()).toEqual([])
+  })
+
+  it('should return an empty list of invites if the api throws an error', async () => {
+    subscriptionApiService.listInvites = jest.fn().mockImplementation(() => {
+      throw new Error('Oops')
+    })
+
+    expect(await createManager().listSubscriptionInvitations()).toEqual([])
+  })
+})