esilverberg

// 🍎
enum MatchState {
    case initial
    case error(error: MatchError)
    case loading
    case started(stack: MatchStack)
    case finished(moreStacksAvailable: Bool, canLoadMoreStacks: Bool, newStackAt: Date)
}

enum Event {

esilverberg

// 🍎 
private(set) lazy var matchState = 
  Property<MatchState>(mutableMatchState)
let mutableMatchState: MutableProperty<MatchState>

private let eventPipe = Signal<Event, Never>.pipe()
var events: Signal<Event, Never> {
    return eventPipe.output
}

esilverberg

// 🍎
final class PSSMatchLogic {
    private let accountRepository: PSSAccountRepository
    private let matchRepository: PSSMatchRepository
    private let locationRepository: PSSLocationRepository
    private let featureRepository: PSSFeatureRepository

    init(accountRepository: PSSAccountRepository, matchRepository: PSSMatchRepository, locationRepository: PSSLocationRepository, featureRepository: PSSFeatureRepository) {
        self.accountRepository = accountRepository
        self.matchRepository = matchRepository

esilverberg

// 🍎
class PSSMatchRepository {
    private let kPrefsHasShownMatchInstructionsKey = "has_shown_match_instructions"

    private let api: PSSMatchApiImplementing
    private let prefs: PSSPrefsStoreImplementing

    init(api: PSSMatchApiImplementing,
         prefs: PSSPrefsStoreImplementing) {
        self.api = api

esilverberg

// 🍎
protocol PSSMatchApiImplementing {
    func getMatchStack(location: CLLocationCoordinate2D,
                       browseMode: PSSBrowseMode?,
                       loadMore: Bool) -> SignalProducer<PSSMatchStack, Error>
    func postRate(profile: PSSProfile, rating: PSSProfileRating) -> SignalProducer<Void, Error>
    func postRateReminder(profile: PSSProfile) -> SignalProducer<Void, Error>
    func deleteRating(profile: PSSProfile) -> SignalProducer<Void, Error>
}

esilverberg

Type	iOS	Android
Screens	UIViewController	Activity, Fragment
Views	UIView	View
Lists	UICollectionView	RecyclerView
Data sources	UICollectionViewDataSource	RecyclerView.Adapter

esilverberg

// 🍎
// In our viewDidLoad
viewModel.state.producer.take(duringLifetimeOf: self).startWithValues { [weak self] (state) in
    guard let self = self else { return }
    switch state {
        case .initial: //...
        case .error: //...
        case .loading: //...
        case .started: //...
        case .finished: //...

esilverberg

// 🍎
// in viewDidLoad
viewModel.events.take(duringLifetimeOf: self).observeValues { [weak self] (event) in
    guard let self = self else { return }

     switch event {
         case .mutualMatch: //...
         case .premiumRequired: //...
         case .exitMatch: //...
     }

esilverberg

// 🍎 Using Swinject
extension Container {
  func injectAppRepositories() -> Container {
    self.register(PSSMatchRepository.self) { resolver in
        return PSSMatchRepository(
            api: resolver.resolve(PSSMatchApiImplementing.self)!,
            prefs: resolver.resolve(PSSPrefsStoreImplementing.self)!)
    }.inObjectScope(.container)
  }
}

esilverberg

// 🍎 Using Quick and Swinject
describe("MatchViewModelTests") {
    var container: Container!
    var logic: PSSMatchLogic!
    var accountRepository: PSSAccountRepository!
    var appEventLogger: PSSAppEventLogging!
    var viewModel: PSSMatchViewModel!

    beforeEach {
        container = Container().injectEverythingForTests()