//: A UIKit based Playground for presenting user interface

import UIKit
import PlaygroundSupport

class MyViewController : UIViewController {

    let label = UILabel()
    let button = UIButton(type: .roundedRect)
    let viewModel = MyViewModel()

    override func loadView() {
        setupUI()
    }

    func setupUI(){
        let view = UIView()
        view.backgroundColor = .white
        label.frame = CGRect(x: 60, y: 200, width: 300, height: 40)
        label.text = "Weather?"
        label.textColor = .black

        button.frame = CGRect(x:60, y: 250, width: 200, height: 40)
        button.setTitle("Tap me!", for: .normal)
        button.addTarget(self, action: Selector(("buttonTap:")), for: .touchUpInside)
        button.backgroundColor = .clear
        button.tintColor = .black
        button.layer.cornerRadius = 15
        button.layer.borderWidth = 3
        button.layer.borderColor = UIColor.black.cgColor

        view.addSubview(label)
        view.addSubview(button)
        self.view = view
    }

    // button tap action
    @objc func buttonTap(_ sender: AnyObject) {
        viewModel.getWeather()
        viewModel.update(label: label)
    }
}


class MyViewModel {

    //updateUI
    func update(label: UILabel){
        label.text = "It is \(getWeather().description) today and \(getWeather().tempature) °C"
    }

    //get weather data from somewhere
    func getWeather() -> Weather{
        return Weather()
    }
}


struct Weather {
    var tempature: Double = 25.0
    var description: String = "Raining"
}

// Present the view controller in the Live View window
PlaygroundPage.current.liveView = MyViewController()