import UIKit

var listOfWords = ["eggnog","santa","reindeer","presents", "christmass tree"]

let incorrectMovesAllowed = 7




class ViewController: UIViewController {

    struct Game {
        var word: String
        var incorrectMovesRemaining: Int
        var guessedLetters: [Character]
        mutating func playerGuessed(letter: Character) {
            guessedLetters.append(letter)
            if !word.characters.contains(letter) {
                incorrectMovesRemaining -= 1
            }
        }
        var formattedWord: String {
            var guessedWord = ""
            for letter in word.characters {
                if guessedLetters.contains(letter) {
                    guessedWord += "\(letter)"
                } else {
                    guessedWord += "_"
                }
            }
            return guessedWord
        }
    }





    @IBOutlet var lettersButtons: [UIButton]!

    @IBOutlet weak var christmassTreeImageView: UIImageView!

    @IBOutlet weak var correctWordLabel: UILabel!
    @IBOutlet weak var scoreLabel: UILabel!



    override func viewDidLoad() {
        super.viewDidLoad()
        newRound()
    }

    var currentGame : Game!

    func newRound(){
        let newWord = listOfWords.removeFirst()
        currentGame = Game(word: newWord, incorrectMovesRemaining: incorrectMovesAllowed, guessedLetters: [])
        updateUI()

    }




    func updateUI() {
        var letters = [String]()
        for letter in currentGame.formattedWord.characters {
            letters.append(String(letter))
        }
        let wordWithSpacing = letters.joined(separator: " ")
        correctWordLabel.text = wordWithSpacing
        scoreLabel.text = "Wins: \(totalWins), Losses: \(totalLosses)"
        christmassTreeImageView.image = UIImage(named: "Tree \(currentGame.incorrectMovesRemaining)")
    }


    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()

    }



    @IBAction func buttonPressed(_ sender: UIButton) {
        sender.isEnabled = false
        let letterString = sender.title(for: .normal)!
        let letter = Character(letterString.lowercased())
        currentGame.playerGuessed(letter: letter)
        updateGameState()
    }

    func updateGameState() {
        if currentGame.incorrectMovesRemaining == 0 {
            totalLosses += 1
        } else if currentGame.word == currentGame.formattedWord {
            totalWins += 1
        } else {
 updateUI()
        }

    }









 }