public struct InAppPurchaseOfferCode: Sendable, Equatable, Identifiable, Codable {
    public let id: String
    public let iapId: String              // injected by Infrastructure
    public let name: String
    public let customerEligibilities: [IAPCustomerEligibility]
    public let isActive: Bool
    public let totalNumberOfCodes: Int?
    public let productionCodeCount: Int?  // Apple-reported count of production codes used
    public let sandboxCodeCount: Int?     // Apple-reported count of sandbox codes used
}

public struct SubscriptionOfferCode: Sendable, Equatable, Identifiable, Codable {
    public let id: String
    public let subscriptionId: String     // injected by Infrastructure
    public let name: String
    public let customerEligibilities: [SubscriptionCustomerEligibility]
    public let offerEligibility: SubscriptionOfferEligibility
    public let duration: SubscriptionOfferDuration
    public let offerMode: SubscriptionOfferMode
    public let numberOfPeriods: Int
    public let totalNumberOfCodes: Int?
    public let productionCodeCount: Int?
    public let sandboxCodeCount: Int?
    public let isActive: Bool
}

public struct InAppPurchaseOfferCodeOneTimeUseCode: Sendable, Equatable, Identifiable, Codable {
    public let id: String
    public let offerCodeId: String        // injected by Infrastructure
    public let numberOfCodes: Int
    public let createdDate: String?
    public let expirationDate: String?
    public let isActive: Bool
    public let environment: OfferCodeEnvironment?  // PRODUCTION | SANDBOX
}

public struct SubscriptionOfferCodeOneTimeUseCode: Sendable, Equatable, Identifiable, Codable {
    public let id: String
    public let offerCodeId: String
    public let numberOfCodes: Int
    public let createdDate: String?
    public let expirationDate: String?
    public let isActive: Bool
    public let environment: OfferCodeEnvironment?
}

public enum OfferCodeEnvironment: String, Sendable, Codable, Equatable {
    case production = "PRODUCTION"
    case sandbox = "SANDBOX"
}

public struct InAppPurchaseOfferCodePrice: Sendable, Equatable, Identifiable, Codable {
    public let id: String
    public let offerCodeId: String
    public let territory: String?
    public let pricePointId: String?
}

public struct SubscriptionOfferCodePrice: Sendable, Equatable, Identifiable, Codable {
    public let id: String
    public let offerCodeId: String
    public let territory: String?
    public let subscriptionPricePointId: String?
}