llinardos

struct User {
  var name: String
  var email: String
  var photo: UIImage
}

llinardos

struct User {
  var name: String
  var email: String
  var photoImage: UIImage?
  var photoUrl: URL?
}

llinardos

func showUserPhoto(for user: User, on imageView: UIImageView, placeholderImage: UIImage? = nil) {
  if let photoImage = user.photoImage else {
    imageView.image = photoImage
  } else if let photoUrl = user.photoUrl else {
    imageView.sd_setImageWithURL(photoUrl, placeholderImage:placeholderImage)
  } else {
    imageView.image = placeholderImage
  }
}

llinardos

enum Image {
  case local(UIImage)
  case remote(URL)
}

llinardos

struct User {
  var name: String
  var email: String
  var photo: Image
}

llinardos

func show(photo: Image, on imageView: UIImageView, placeholderImage: UIImage? = nil) {
  switch photo {
    case .local(let image):
      imageView.image = image
    case .remote(let url):
      imageView.sd_setImageWithURL(photoUrl, placeholderImage:placeholderImage)
  }
}

llinardos

enum Image {
  case local(UIImage)
  case remote(URL)
   
  init(localImage: UIImage) {
    self = .local(localImage)
  }
    
  init(remoteUrl: URL) {
    self = .remote(remoteUrl)

llinardos

extension UIImageView {
    func set(image: Image, placeholderImage: UIImage? = nil) {
        switch image {
        case .local(let image):
            self.image = image
        case .remote(let url):
            self.sd_setImageWithURL(photoUrl, placeholderImage:placeholderImage)
        }
    }
}

llinardos

let localImage = Image.local(localImage: UIImage(named:"image"))
imageview.set(image: localImage)

llinardos

let remoteImage = Image.remote(url: URL(string: "http://www.simpsoncrazy.com/content/pictures/homer/homer-pythagoras.png"))
imageview.set(image: remoteImage)