//
// Swift 3
//

import UIKit

/*
1) Properties (type & instance)
2) Initializers
3) Deinitializers
4) Methods (type & instance)
5) Subscripts
*/
class Vehicule {

  // 1) Type Properties
  static var count = 0

  // 1) Instance Properties
  var passengersCapacity = 4
  let zeroTo60: Float
  var color: UIColor

  // 2) Initializers
  init(passengers: Int, zeroTo60: Float, color: UIColor = UIColor.black) {
    passengersCapacity = passengers
    self.zeroTo60 = zeroTo60
    self.color = color
    Vehicule.count += 1
  }

  // You have to use 'convenience' keyword for initializers who call another initializers
  convenience init(zeroTo60: Float) { self.init(passengers: 4, zeroTo60: zeroTo60) }

  convenience init() { self.init(zeroTo60: 6.0) }

  // 3) Deinitializers
  deinit {
    Vehicule.count +-= 1
  }

  // 4) Type Method (you can use 'static' or 'class' keyword)
  class func printCount() {
    print("Count:", count) // Without the classname prefix ('Vehicule.')
  }

  // 4) Instance Method
  func start() {
    print("(Silence)")
  }
}

let teslaModelS = Vehicule(passengers: 4, zeroTo60: 2.5)
let teslaModel3 :Vehicule? = Vehicule()
print(Vehicule.count) // = 2

// Implicit use of Deinitializers
teslaModel3 = nil
print(Vehicule.count) // = 1

// By reference
let p100d = teslaModelS
p100d.color = UIColor.red
// teslaModelS.color == UIColor.red

// Type Method
Vehicule.printCount()

// Instance Method
teslaModelS.start()