class ViewController: UIViewController {

    @IBOutlet weak var flipCountLabel: UILabel!
    @IBOutlet var cardButtons: [UIButton]!

    var game = Concentration(numberOfPairsOfCards: cardButtons.count / 2)

    var emojiChoices = ["🎃", "👻", "🎃", "👻"]

    var flipCount = 0 {
        didSet {
            flipCountLabel.text = "Flips: (flipCount)"
        }
    }

    //MARK: - IBActions
    @IBAction func touchCard(_ sender: UIButton) {
        flipCount += 1
        if let cardNumber = cardButtons.index(of: sender) {
            flipCard(withEmoji: emojiChoices[cardNumber], on: sender)
        }
    }


    //MARK: - Methods
    func flipCard(withEmoji emoji: String, on button: UIButton) {
        if button.currentTitle == emoji {
            button.setTitle("", for: .normal)
            button.backgroundColor = #colorLiteral(red: 0.9372549057, green: 0.3490196168, blue: 0.1921568662, alpha: 1)
        } else {
            button.setTitle(emoji, for: .normal)
            button.backgroundColor = #colorLiteral(red: 1, green: 1, blue: 1, alpha: 1)
        }
    }

}

class Concentration {
    var cards = [Card]()

    func chooseCard(at index: Int) {

    }

    init(numberOfPairsOfCards: Int) {
        for _ in 1...numberOfPairsOfCards {
            let card = Card()
            cards += [card, card]
        }
        //TODO: - Shuffle the cards

    }


}