viewcontroller.swift

import UIKit

protocol TestDisplayLogic: class
{
    func successFetchedItems(viewModel: Test.Fetch.ViewModel)
    func errorFetchingItems(viewModel: Test.Fetch.ViewModel)
}

class TestViewController: UIViewController, TestDisplayLogic
{
    var interactor: TestBusinessLogic?
    var router: (NSObjectProtocol & TestRoutingLogic & TestDataPassing)?
    
    // MARK: Object lifecycle
    
    override init(nibName nibNameOrNil: String?, bundle nibBundleOrNil: Bundle?)
    {
        super.init(nibName: nibNameOrNil, bundle: nibBundleOrNil)
        setup()
    }
    
    required init?(coder aDecoder: NSCoder)
    {
        super.init(coder: aDecoder)
        setup()
    }
    
    // MARK: Setup
    
    private func setup()
    {
        let viewController = self
        let interactor = TestInteractor()
        let presenter = TestPresenter()
        let router = TestRouter()
        viewController.interactor = interactor
        viewController.router = router
        interactor.presenter = presenter
        presenter.viewController = viewController
        router.viewController = viewController
        router.dataStore = interactor
    }
    
    // MARK: Routing
    
    override func prepare(for segue: UIStoryboardSegue, sender: Any?)
    {
        if let scene = segue.identifier {
            let selector = NSSelectorFromString("routeTo\(scene)WithSegue:")
            if let router = router, router.responds(to: selector) {
                router.perform(selector, with: segue)
            }
        }
    }
    
    // MARK: View lifecycle

    override func viewDidLoad(){
        super.viewDidLoad()
        interactor?.fetchItems(request: Test.Fetch.Request(itemId: 23, keyword: "bbb", count: "3"))
    }
    
    func successFetchedItems(viewModel: Test.Fetch.ViewModel) {
        print(viewModel.name)
        print(viewModel.date)
    }
    
    func errorFetchingItems(viewModel: Test.Fetch.ViewModel) {
        print(viewModel.message)
    }
}