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.ts

@@ -0,0 +1,45 @@
+import { Invitation } from '@standardnotes/models'
+import { SubscriptionApiServiceInterface } from '@standardnotes/api'
+import { InternalEventBusInterface } from '../Internal/InternalEventBusInterface'
+import { AbstractService } from '../Service/AbstractService'
+import { SubscriptionClientInterface } from './SubscriptionClientInterface'
+import { Uuid } from '@standardnotes/common'
+
+export class SubscriptionManager extends AbstractService implements SubscriptionClientInterface {
+  constructor(
+    private subscriptionApiService: SubscriptionApiServiceInterface,
+    protected override internalEventBus: InternalEventBusInterface,
+  ) {
+    super(internalEventBus)
+  }
+
+  async listSubscriptionInvitations(): Promise<Invitation[]> {
+    try {
+      const response = await this.subscriptionApiService.listInvites()
+
+      return response.data.invitations ?? []
+    } catch (error) {
+      return []
+    }
+  }
+
+  async inviteToSubscription(inviteeEmail: string): Promise<boolean> {
+    try {
+      const result = await this.subscriptionApiService.invite(inviteeEmail)
+
+      return result.data.success === true
+    } catch (error) {
+      return false
+    }
+  }
+
+  async cancelInvitation(inviteUuid: Uuid): Promise<boolean> {
+    try {
+      const result = await this.subscriptionApiService.cancelInvite(inviteUuid)
+
+      return result.data.success === true
+    } catch (error) {
+      return false
+    }
+  }
+}