class Hem : Codable {
    var minCost: Float
    var maxCost: Float
    var actualCost: Float

    var name: String {
        let thisType = type(of: self)
        return String(describing: thisType)
    }

    init(minCost: Float, maxCost: Float, actualCost: Float) {
        self.minCost = minCost
        self.maxCost = maxCost
        self.actualCost = actualCost
    }

    convenience init() {
        self.init(minCost: -1, maxCost: -1, actualCost: -1)
    }
}

class AddHemLace : Hem {
    var costDetails: String?
    var costUnit: String?
    var units: Int = 1
    var secondaryCost: Float = 0.0
    var secondaryCostDetails: String?

    var totalCost : Float {
        return self.actualCost * Float(self.units) + self.secondaryCost
    }

    init() {
        let min: Float = 50.00
        let max: Float = 80.00
        let actual: Float = min
        super.init(minCost: min, maxCost: max, actualCost: actual)
    }

    required init(from decoder: Decoder) throws {
        fatalError("init(from:) has not been implemented")
    }
}

enum AlterationSectionsEnum: String, CaseIterable  {
    case Hem
    // other cases
}

enum HemEnum: String, CaseIterable {
    case cutAndReplaceHem
    // other cases
}