class ViewController: UIViewController {

    let allQuestions = QuestionBank()
    var selectedAnswer : Bool = false
    var questionNumber : Int = 0

    @IBOutlet weak var questionLabel: UILabel!
    @IBOutlet weak var scoreLabel: UILabel!
    @IBOutlet var progressBar: UIView!
    @IBOutlet weak var progressLabel: UILabel!

    override func viewDidLoad() {
        super.viewDidLoad()

        let firstQuestion = allQuestions.list[0]
        questionLabel.text = firstQuestion.questionText

    }


    @IBAction func answerPressed(_ sender: AnyObject) {
        if sender.tag == 1 {
            selectedAnswer = true
        }
        else if sender.tag == 2 {
            selectedAnswer = false
        }

        checkAnswer()
        questionNumber = questionNumber + 1

        nextQuestion()
    }


    func updateUI() {

    }


    func nextQuestion() {

        if questionNumber <= 12 {
            questionLabel.text = allQuestions.list[questionNumber].questionText

        }
        else {
            let alert = UIAlertController(title: "GREAT!", message: "you've finished the quiz, would you like to start over?", preferredStyle: .alert)

            let restartAction = UIAlertAction(title: "Restart", style: .default, handler: {(UIAlertAction) in
                self.startOver()

            })

            alert.addAction(restartAction)
            present(alert, animated: true, completion: nil)
        }
    }


    func checkAnswer() {

        let correctAnswer = allQuestions.list[questionNumber].answer

        if correctAnswer == selectedAnswer {
            print("you got it!:)")
        }
        else {
            print("wrong!:(")

        }

    }


    func startOver() {

        questionNumber = 0
        nextQuestion()

    }



}