Attempting to create a zone share for a CoreData object via just CloudKit

CreateShareV2.swift

func createShareV2(_ object: NSManagedObject, title: String) async -> CKShare? {
  Logger.shared.notice("Creating share for object")

  guard let record = persistentCloudKitContainer.record(for: object.objectID) else {
    Logger.shared.info("Could not find CKRecord for object to share")
    return nil
  }

  let container = CKContainer.default()
  let database = container.privateCloudDatabase

  let zoneID = record.recordID.zoneID
  let zone = CKRecordZone(zoneID: zoneID)

  guard let existingShare = zone.share else {
    let share = CKShare(recordZoneID: zone.zoneID)
    share[CKShare.SystemFieldKey.title] = title
    _ = try? await database.modifyRecords(saving: [share], deleting: [])
    Logger.shared.info("Creating new share")
    return share
  }

  guard let share = try? await database.record(for: existingShare.recordID) as? CKShare else {
    Logger.shared.error("Unable to find existing share")
    return nil
  }

  Logger.shared.info("Share found \(share)")

  return share
}