Example with pure

.gitignore

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 .DS_Store
-/.build
-/Packages
-/*.xcodeproj
+.Trashes
+*.swp
+*~.nib
+DerivedData/
+build/
+
+# Xcode
+#
+# gitignore contributors: remember to update Global/Xcode.gitignore, Objective-C.gitignore & Swift.gitignore
+Index
+
+## Build generated
+build/
+DerivedData/
+
+## Various settings
+*.pbxuser
+!default.pbxuser
+*.mode1v3
+!default.mode1v3
+*.mode2v3
+!default.mode2v3
+*.perspectivev3
+!default.perspectivev3
+xcuserdata/
+
+## Other
+*.moved-aside
+*.xccheckout
+*.xcscmblueprint
+
+## Obj-C/Swift specific
+*.hmap
+*.ipa
+*.dSYM.zip
+*.dSYM
+
+## Playgrounds
+timeline.xctimeline
+playground.xcworkspace
+
+# Swift Package Manager
+#
+# Add this line if you want to avoid checking in source code from Swift Package Manager dependencies.
+# Packages/
+# Package.pins
+.build/

PureExample/PureExample.xcodeproj/project.xcworkspace/xcshareddata/IDEWorkspaceChecks.plist

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+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>IDEDidComputeMac32BitWarning</key>
+	<true/>
+</dict>
+</plist>

PureExample/PureExample/Main/AppDelegate.swift

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+//
+//  AppDelegate.swift
+//  PureExample
+//
+//  Created by Łukasz Śliwiński on 19/02/2020.
+//  Copyright © 2020 plum. All rights reserved.
+//
+
+import UIKit
+import UserNotifications
+
+@UIApplicationMain
+class AppDelegate: UIResponder, UIApplicationDelegate {
+
+    let dependency: AppDependency
+
+    /// Called from the system (it's private: not accessible in the testing environment)
+    private override init() {
+      self.dependency = AppDependency.resolve()
+      super.init()
+    }
+
+    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
+        return true
+    }
+
+    // MARK: UISceneSession Lifecycle
+
+    func application(_ application: UIApplication, configurationForConnecting connectingSceneSession: UISceneSession, options: UIScene.ConnectionOptions) -> UISceneConfiguration {
+        return UISceneConfiguration(name: "Default Configuration", sessionRole: connectingSceneSession.role)
+    }
+}

PureExample/PureExample/Main/SceneDelegate.swift

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+//
+//  SceneDelegate.swift
+//  PureExample
+//
+//  Created by Łukasz Śliwiński on 19/02/2020.
+//  Copyright © 2020 plum. All rights reserved.
+//
+
+import UIKit
+
+class SceneDelegate: UIResponder, UIWindowSceneDelegate {
+
+    private var appDelegate: AppDelegate {
+        return UIApplication.shared.delegate as! AppDelegate
+    }
+
+    var window: UIWindow?
+
+    func scene(
+        _ scene: UIScene,
+        willConnectTo session: UISceneSession,
+        options connectionOptions: UIScene.ConnectionOptions
+    ) {
+        guard let scene = (scene as? UIWindowScene) else { return }
+
+        self.window = UIWindow(windowScene: scene)
+        guard let window = self.window else { return }
+
+        let factory = appDelegate.dependency.listViewControllerFactory
+        window.rootViewController = factory.create()
+        window.makeKeyAndVisible()
+    }
+}

PureExample/PureExample/Models/AppDependency.swift

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+//
+//  AppDependency.swift
+//  PureExample
+//
+//  Created by Łukasz Śliwiński on 20/02/2020.
+//  Copyright © 2020 plum. All rights reserved.
+//
+
+import UIKit
+import UserNotifications
+import Pure
+
+struct AppDependency {
+    let networking: Networking
+    let remoteNotificationService: RemoteNotificationService
+    let listViewControllerFactory: ListViewController.Factory
+}
+
+extension AppDependency {
+
+    static func resolve() -> AppDependency {
+        let networking = Networking()
+        let remoteNotificationService = RemoteNotificationService(
+            notificationCenter: UNUserNotificationCenter.current()
+        )
+
+        return AppDependency(
+            networking: networking,
+            remoteNotificationService: remoteNotificationService,
+            listViewControllerFactory: ListViewController.Factory(
+                dependency: .init(
+                    networking: networking,
+                    notificationsService: remoteNotificationService,
+                    factory: DetailViewController.Factory(
+                        dependency: .init(
+                            networking: networking,
+                            imageCellConfigurator: ImageCell.Configurator()
+                        )
+                    )
+                )
+            )
+        )
+    }
+}
+
+// MARK: - Pure Factory Module -
+
+// MARK: - ListViewController -
+
+extension ListViewController: FactoryModule {
+    struct Dependency {
+        let networking: Networking
+        let notificationsService: RemoteNotificationService
+        let factory: DetailViewController.Factory
+    }
+}
+
+extension Factory where Module == ListViewController {
+
+    func create() -> ListViewController {
+        let module = ListViewController.loadFromStoryboard()
+        module.networking = dependency.networking
+        module.notificationsService = dependency.notificationsService
+        module.factory = dependency.factory
+        return module
+    }
+}
+
+// MARK: - DetailViewController -
+
+extension DetailViewController: FactoryModule {
+    struct Dependency {
+        let networking: Networking
+        let imageCellConfigurator: ImageCell.Configurator
+    }
+
+    struct Payload {
+        let selectedItem: Item
+    }
+}
+
+extension Factory where Module == DetailViewController {
+
+    func create(payload: DetailViewController.Payload) -> DetailViewController {
+        let vc = DetailViewController.loadFromStoryboard()
+        vc.networking = dependency.networking
+        vc.imageCellConfigurator = dependency.imageCellConfigurator
+        vc.item = payload.selectedItem
+        return vc
+    }
+}
+
+// MARK: - ImageCell -
+
+extension ImageCell: ConfiguratorModule {
+    struct Payload {
+        let image: UIImage
+    }
+
+    func configure(dependency: Void, payload: ImageCell.Payload) {
+        self.imageView.image = payload.image
+    }
+}

PureExample/PureExample/Models/Item.swift

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+//
+//  Item.swift
+//  PureExample
+//
+//  Created by Łukasz Śliwiński on 20/02/2020.
+//  Copyright © 2020 plum. All rights reserved.
+//
+
+import Foundation
+
+struct Item {
+    let name: String
+}

PureExample/PureExample/Protocols/ImageDownloaderType.swift

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+//
+//  ImageDownloaderType.swift
+//  PureExample
+//
+//  Created by Łukasz Śliwiński on 20/02/2020.
+//  Copyright © 2020 plum. All rights reserved.
+//
+
+import Foundation
+
+protocol ImageDownloaderType {
+
+}

PureExample/PureExample/Protocols/StoryboardLoadable.swift

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+//
+//  StoryboardLoadable.swift
+//  PureExample
+//
+//  Created by Łukasz Śliwiński on 19/02/2020.
+//  Copyright © 2020 plum. All rights reserved.
+//
+
+import UIKit
+
+protocol StoryboardLoadable: class {
+    static var storyboardName: String { get }
+    static var controllerId: String { get }
+}
+
+extension StoryboardLoadable where Self: UIViewController {
+
+    static var storyboardName: String {
+        return String(describing: Self.self)
+    }
+
+    static var controllerId: String {
+        return String(describing: Self.self)
+    }
+
+    static func loadFromStoryboard() -> Self {
+        let bundle = Bundle(for: Self.self)
+        let storyboard = UIStoryboard(name: Self.storyboardName, bundle: bundle)
+        return storyboard.instantiateViewController(withIdentifier: Self.controllerId) as! Self
+    }
+}