Counter-ViewController.swift

//
//  ViewController.swift
//  Counter
//
//  Created by Ahmad Alhashemi on 11/24/20.
//

import UIKit

class ViewController: UIViewController {

    var counter: Int = 0 {
        didSet {
            UserDefaults.standard.set(counter, forKey: "counter")
            configureView()
        }
    }
    var maxAllowed: Int = 10
    
    @IBOutlet weak var counterLabel: UILabel!
    
    @IBOutlet weak var minusButton: UIButton!

    override func viewDidLoad() {
        super.viewDidLoad()
        
        counter = UserDefaults.standard.integer(forKey: "counter")
    }

    func configureView() {
        counterLabel.text = String(counter)
        minusButton.isEnabled = counter != 0
        counterLabel.textColor = counter > maxAllowed ? .systemRed : .black
    }
    
    @IBAction func plusPressed(_ sender: Any) {
        counter += 1
    }

    
    @IBAction func minusPressed(_ sender: Any) {
        counter -= 1
    }
    
    override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
        if segue.identifier == "SettingsSegue" {
            let s = segue.destination as! SettingsViewController
            s.maxAllowed = maxAllowed
        }
    }
    
}