swift DMVTestProgress (swiftify.com)

gistfile1.txt

enum DMVTestProgressStatus : Int {
    case empty
    case inProgress
    case passed
    case failed
}

//totalCount
//self
//DMVTestProgressStatusPassed
//DMVTestProgressStatusFailed

class DMVTestProgress: NSObject, NSSecureCoding {
    var totalCount = 0
    var correctCount = 0
    var wrongCount = 0
    var skippedCount = 0
    var status: DMVTestProgressStatus!
    var percents: Float = 0.0
    var adShown = false
    
    init(totalCount: Int) {
        super.init()
        self.totalCount = totalCount
    }

    func isPassed() -> Bool {
        return status == DMVTestProgressStatusPassed
    }

    class var supportsSecureCoding: Bool {
        return true
    }

    var isCompleted: Bool {
            get {
            return status == DMVTestProgressStatusPassed || status == DMVTestProgressStatusFailed
            }
            set {
                super.isCompleted = newValue
            }
    }
    
    required init?(coder aDecoder: NSCoder) {
        super.init(coder: aDecoder)
    }
    
    
    
    func encode(with aCoder: NSCoder) {
        aCoder.encode(totalCount, forKey: NSStringFromSelector(#selector(MXSignpostMetric.totalCount)))
        aCoder.encode(correctCount, forKey: NSStringFromSelector(Selector("correctCount")))
        aCoder.encode(wrongCount, forKey: NSStringFromSelector(Selector("wrongCount")))
        aCoder.encode(skippedCount, forKey: NSStringFromSelector(Selector("skippedCount")))
        aCoder.encode(status, forKey: NSStringFromSelector(Selector("status")))
        aCoder.encode(percents, forKey: NSStringFromSelector(Selector("percents")))
        aCoder.encode(adShown, forKey: NSStringFromSelector(Selector("adShown")))
    }
    
    required init?(coder aDecoder: NSCoder) {
        super.init()
        totalCount = aDecoder.decodeInteger(forKey: NSStringFromSelector(#selector(MXSignpostMetric.totalCount)))
        correctCount = aDecoder.decodeInteger(forKey: NSStringFromSelector(Selector("correctCount")))
        wrongCount = aDecoder.decodeInteger(forKey: NSStringFromSelector(Selector("wrongCount")))
        skippedCount = aDecoder.decodeInteger(forKey: NSStringFromSelector(Selector("skippedCount")))
        status = aDecoder.decodeInteger(forKey: NSStringFromSelector(Selector("status")))
        percents = aDecoder.decodeFloat(forKey: NSStringFromSelector(Selector("percents")))
        adShown = aDecoder.decodeBool(forKey: NSStringFromSelector(Selector("adShown")))
    }
    
    func getTotalAnswers() -> Int {
        
        return correctCount + wrongCount + skippedCount
    }
    
    func getAnswersCount() -> Int {
        
        return correctCount + wrongCount
    }
}