example enum definition

enum EventModel {}

 extension EventModel {

  struct StoreImpression: Equatable {

    public let position: Int
    public let filterData: AppliedFilters?
    public let searchId: String
    public let deliveryFeeCurrency: String
    public let pricingId: Int?
    public let rankingType: EventModel.RankingType?
    public init(
      position: Int,
      filterData: EventModel.AppliedFilters?,
      searchId: String,
      deliveryFeeCurrency: String,
      rankingType: EventModel.RankingType?,
      pricingId: Int?
    ) {
      self.position = position
      self.filterData = filterData
      self.searchId = searchId
      self.deliveryFeeCurrency = deliveryFeeCurrency
      self.pricingId = pricingId
      self.rankingType = rankingType
    }

  }
  enum RankingType: String, Equatable {
    case marketplaceOptimization = "MO"
    case legacy = "Legacy"
    case hyperlocal = "Hyperlocal"
  }

  struct AppliedFilters: Equatable {

     let selectedFilters: SelectedFilters
     let prime: Bool
     let personalizedFilterType: EventModel.PersonalizedFilterType
     let origin: EventModel.AppliedFiltersOrigin
     let toggleValue: Bool
     let personalizedFilterPosition: Int?
     let categoryID: Int?

     init(
      selectedFilters: SelectedFilters,
      prime: Bool,
      personalizedFilterType: EventModel.PersonalizedFilterType,
      origin: EventModel.AppliedFiltersOrigin,
      toggleValue: Bool,
      personalizedFilterPosition: Int?,
      categoryID: Int?
    ) {
      self.selectedFilters = selectedFilters
      self.prime = prime
      self.personalizedFilterType = personalizedFilterType
      self.origin = origin
      self.toggleValue = toggleValue
      self.personalizedFilterPosition = personalizedFilterPosition
      self.categoryID = categoryID
    }

  }

}

 extension EventModel {
  struct SelectedFilters: Equatable {
     let sortingId: Int?
     let type: String?
     let pricingId: Int?

     init(sortingId: Int?, type: String?, pricingId: Int? = nil) {
      self.sortingId = sortingId
      self.type = type
      self.pricingId = pricingId
    }
  }

}

 extension EventModel {

  enum PersonalizedFilterType: String {
    case user
    case city
    case none
  }

}


 extension EventModel {

  enum AppliedFiltersOrigin: String {
    case topFiltersComponent
    case filtersScreen
    case primeToggle
    case pickupToggle
  }

}