import UIKit


class ViewController: UIViewController {

    // the timer calls a method (function) every x seconds
    // FINISH ME
    // create a variable called timer
    ??? ????? =  Timer()


    // FINISH ME
    // Control + Drag your time label to here 
    // Make sure it pops up and says connect
    @IBOutlet weak var timeLabel: UILabel!
    

    
    @objc func timerAction()
    {
        
        let formatter = DateFormatter()
        formatter.dateFormat = "hh:mm:ss a" // "a" prints "pm" or "am"
        let hourString = formatter.string(from: Date()) // "12 AM"
        

        // FINISH ME
        // Put the minutes and seconds onto the timerLabel (text field)
        // hourString is the variable that holds the formatted time
        // USE interpolation  \(??)
        timeLabel.???? = "??????"
        
    }
    

    // FINISH ME
    // Control + Drag your start button to here 
    @IBAction func startButtonEvent(_ sender: UIButton)
    {
        // FINISH ME
        // call the timer's invalidate() method (function)
        // this will shut down the current timer
        timer.????????? // just in case this button is tapped multiple times
        

        // start the timer
        // and call timerAction() every 1 second
        timer = Timer.scheduledTimer(timeInterval: 1.0, target: self, selector: #selector(timerAction), userInfo: nil, repeats: true)
        
        
    }
    
    
    
    // FINISH ME
    // Control + Drag your stop button to here 
    @IBAction func stopButtonEvent(_ sender: UIButton)
    {
        timer.invalidate()


        // FINISH ME
        // set the timeLabel's text field to "00:00:00 --"
        timeLabel.????? = ???????
    }
    
    
    
    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view, typically from a nib.
    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }


}