internal: incomplete vault systems behind feature flag (#2340)

packages/services/src/Domain/Vaults/UseCase/GetVault.ts

@@ -0,0 +1,17 @@
+import { VaultListingInterface } from '@standardnotes/models'
+import { ItemManagerInterface } from './../../Item/ItemManagerInterface'
+import { ContentType } from '@standardnotes/common'
+
+export class GetVaultUseCase<T extends VaultListingInterface> {
+  constructor(private items: ItemManagerInterface) {}
+
+  execute(query: { keySystemIdentifier: string } | { sharedVaultUuid: string }): T | undefined {
+    const vaults = this.items.getItems<VaultListingInterface>(ContentType.VaultListing)
+
+    if ('keySystemIdentifier' in query) {
+      return vaults.find((listing) => listing.systemIdentifier === query.keySystemIdentifier) as T
+    } else {
+      return vaults.find((listing) => listing.sharing?.sharedVaultUuid === query.sharedVaultUuid) as T
+    }
+  }
+}