12102020-iOS-SimpleMath-solution-1.swift

final class UserDefaultsStorage: Storage {
	
  let modelVersion: String
  let key: String

  init(withKey: String, modelVersion: String) {
    key = withKey
    self.modelVersion = modelVersion
  }

	// Saving Settings bundle store, from cache.
  func store(settingsBundle: SettingsBundle) {
    var data = storedMigrationData
    data.settingsBundle = settingsBundle
    save(storedData: data)
  }

	// Loading of the settings bundle
  func loadSettingsBundle() -> SettingsBundle {
    storedMigrationData.settingsBundle
  }

	// Save onboarding bundle
  func store(onboardingBundle: OnboardingBundle) {
    var data = storedMigrationData
    data.onboardingBundle = onboardingBundle
    save(storedData: data)
  }

	// Loading onboarding bundle
  func loadOnboardingBundle() -> OnboardingBundle {
    storedMigrationData.onboardingBundle
  }
	
	private var storedDataCache: MigrationData?
}