Add single store example. Feedback and Reduce composition. (#49)

* Add pullbacks, Store, Context, reducer composition

* Add counter example

* Add single store example

* Add Picker example and parent child state composition

* Update Example/AppDelegate.swift

Co-Authored-By: Michael Brown <[email protected]>

* Remove SwiftUI 🙈

* Use Xcode 11.1

* update .circleci/config.yml

* Update kingsfisher

* Rename to forward

* Remove Kingfisher

* Implement single store example with new Feedback loops

* Typos

Co-authored-by: Michael Brown <[email protected]>
Co-authored-by: Ilya Puchka <[email protected]>

Cartfile.private

@@ -1,6 +1,5 @@
 # Example app.
 github "ReactiveCocoa/ReactiveCocoa" ~> 10.0.0
-github "onevcat/Kingfisher" ~> 5.2
 
 # Tests
 github "Quick/Nimble" ~> 8.0

Example/AppDelegate.swift

@@ -14,7 +14,9 @@ class AppDelegate: UIResponder, UIApplicationDelegate {
     var window: UIWindow?
 
     func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
+        // Comment these lines if you want to see multi store example
+        window?.rootViewController = RootViewController()
+        window?.makeKeyAndVisible()
         return true
     }
 }
-

Example/Base.lproj/Main.storyboard

@@ -1,9 +1,9 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="15505" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" colorMatched="YES" initialViewController="zMS-h2-fCg">
+<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="15400" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" colorMatched="YES" initialViewController="zMS-h2-fCg">
     <device id="retina4_7" orientation="portrait" appearance="light"/>
     <dependencies>
         <deployment identifier="iOS"/>
-        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="15509"/>
+        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="15404"/>
         <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
     </dependencies>
     <scenes>

Example/MultiStoreExample/PaginationViewController.swift

@@ -0,0 +1,129 @@
+import UIKit
+import ReactiveSwift
+import ReactiveCocoa
+import ReactiveFeedback
+
+final class PaginationViewController: UIViewController {
+    private lazy var contentView = MoviesView.loadFromNib()
+    private let viewModel = Movies.ViewModel()
+
+    override func loadView() {
+        self.view = contentView
+    }
+
+    override func viewDidLoad() {
+        super.viewDidLoad()
+        viewModel.state.producer.startWithValues(contentView.render)
+    }
+}
+
+extension Movies {
+    final class ViewModel: Store<State, Event> {
+        init() {
+            super.init(
+                initial: Movies.State(),
+                reducer: Movies.reduce,
+                feedbacks: [Movies.feedback]
+            )
+        }
+    }
+}
+
+// Key for https://www.themoviedb.org API
+let correctKey = "d4f0bdb3e246e2cb3555211e765c89e3"
+
+struct Results: Codable {
+    let page: Int
+    let totalResults: Int
+    let totalPages: Int
+    let results: [Movie]
+
+    static func empty() -> Results {
+        return Results.init(page: 0, totalResults: 0, totalPages: 0, results: [])
+    }
+
+    enum CodingKeys: String, CodingKey {
+        case page
+        case totalResults = "total_results"
+        case totalPages = "total_pages"
+        case results
+    }
+}
+
+struct Movie: Codable {
+    let id: Int
+    let overview: String
+    let title: String
+    let posterPath: String?
+
+    var posterURL: URL? {
+        return posterPath
+            .map {
+                "https://image.tmdb.org/t/p/w342/\($0)"
+            }
+            .flatMap(URL.init(string:))
+    }
+
+    enum CodingKeys: String, CodingKey {
+        case id
+        case overview
+        case title
+        case posterPath = "poster_path"
+    }
+}
+
+extension URLSession {
+    func fetchMovies(page: Int) -> SignalProducer<Results, NSError> {
+        return SignalProducer.init({ (observer, lifetime) in
+            let url = URL(string: "https://api.themoviedb.org/3/discover/movie?api_key=\(correctKey)&sort_by=popularity.desc&page=\(page)")!
+            let task = self.dataTask(with: url, completionHandler: { (data, response, error) in
+                if let httpResponse = response as? HTTPURLResponse, httpResponse.statusCode == 401 {
+                    let error = NSError(domain: "come.reactivefeedback",
+                                        code: 401,
+                                        userInfo: [NSLocalizedDescriptionKey: "Forced failure to illustrate Retry"])
+                    observer.send(error: error)
+                } else if let data = data {
+                    do {
+                        let results = try JSONDecoder().decode(Results.self, from: data)
+                        observer.send(value: results)
+                    } catch {
+                        observer.send(error: error as NSError)
+                    }
+                } else if let error = error {
+                    observer.send(error: error as NSError)
+                    observer.sendCompleted()
+                } else {
+                    observer.sendCompleted()
+                }
+            })
+
+            lifetime += AnyDisposable(task.cancel)
+            task.resume()
+        })
+    }
+}
+
+final class ArrayCollectionViewDataSource<T>: NSObject, UICollectionViewDataSource {
+    typealias CellFactory = (UICollectionView, IndexPath, T) -> UICollectionViewCell
+
+    private(set) var items: [T] = []
+    var cellFactory: CellFactory!
+
+    func update(with items: [T]) {
+        self.items = items
+    }
+
+    func item(atIndexPath indexPath: IndexPath) -> T {
+        return items[indexPath.row]
+    }
+
+    // MARK: UICollectionViewDataSource
+
+    func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
+        return items.count
+    }
+
+    func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
+        return cellFactory(collectionView, indexPath, item(atIndexPath: indexPath))
+    }
+}

Example/MultiStoreExample/ViewController.swift

@@ -0,0 +1,33 @@
+import UIKit
+import ReactiveSwift
+import ReactiveCocoa
+import ReactiveFeedback
+
+class ViewController: UIViewController {
+    @IBOutlet weak var plusButton: UIButton!
+    @IBOutlet weak var minusButton: UIButton!
+    @IBOutlet weak var label: UILabel!
+    private lazy var contentView = CounterView.loadFromNib()
+    private let viewModel = Counter.ViewModel()
+
+    override func loadView() {
+        self.view = contentView
+    }
+
+    override func viewDidLoad() {
+        super.viewDidLoad()
+        viewModel.state.producer.startWithValues(contentView.render)
+    }
+}
+
+extension Counter {
+    final class ViewModel: Store<State, Event> {
+        init() {
+            super.init(
+                initial: State(),
+                reducer: Counter.reduce,
+                feedbacks: []
+            )
+        }
+    }
+}