A UIViewController invoking PokeApi

PokeListViewController.swift

import UIKit
import app

class PokeListViewController: UIViewController {
  @IBOutlet var pokemonSprite: UIImageView!
  @IBOutlet var pokemonInfo: UILabel!
  @IBOutlet var pokeListTableView: UITableView!

  internal var pokeList: [PokemonEntry] = []
  internal var api = PokeApi()

  override func viewDidLoad() {
    super.viewDidLoad()
    pokeListTableView.dataSource = self
    pokeListTableView.delegate = self
    loadList()
  }

  private func loadList(){
    api.getPokemonList(
      success: { data in
        self.update(data: data)
        return KotlinUnit()
    }, failure: {
      self.handleError($0?.message)
      return KotlinUnit()
    })
  }

  internal func handleError(_ error: String?){
    let message = error ?? "An unknown error occurred. Retry?"
    let alert = UIAlertController(title: "Error", message: message, preferredStyle: .alert)
    alert.addAction(UIAlertAction(title: "Retry", style: .default, handler: { action in
      self.loadList()
    }))
    alert.addAction(UIAlertAction(title: "Cancel", style: .cancel, handler: nil))
    self.present(alert, animated: true)
  }
}