hogumachu / RIBs-TCA

Combination of RIBs and TCA.

RIBs+TCA

RIBs is a framework and TCA is a Architecture (because its name is The Composable Architecture) RIBs consists of Router, Interactor, Builder and View(optional). RIBs+TCA replaced View with SwiftUI and structured Interactor to perform the role of Reducer.

Why use?

• Role separation is very well implemented (Advantages of RIBs).
• Navigation is not handled in the View.
  • Modularization of interface/implementation structures is possible.
  • So you can use µFeatures architecture.
• Even if you're already using RIBs, you can easily add SwiftUI and TCA.
• You can choose between UIKit and SwiftUI depending on the situation.
• You can leverage the great features of TCA (such as dependency injection, etc).

Differences

• There is a Reducer called Feature, but the Interactor defines the State, Action, and the behavior of the Reducer.

// HomeInteractor
final class HomeInteractor: PresentableInteractor<HomePresentable>, HomeInteractable {
  
  @ObservableState
  struct State {
    var count: Int = 0
  }
  
  enum Action {
    case closeTapped
    // ...
    case detailTapped
  }

  override func didBecomeActive() {
    super.didBecomeActive()
    presenter.attach(view: HomeView(store: Store(
      initialState: State(),
      reducer: {
        HomeFeature(reducer: reducer())
      }
    )))
  }
  
  private func reducer() -> Reduce<State, Action> {
    Reduce { [weak self] state, action in
      switch action {
      case .closeTapped:
        self?.listener?.homeDidTapClose()
        return .none
      // ...
      case .detailTapped:
        self?.router?.attachDetail(count: state.count)
        return .none
      }
    }
  }
  
}


// HomeFeature
@Reducer
struct HomeFeature {
  
  typealias State = HomeInteractor.State
  typealias Action = HomeInteractor.Action
  
  private let reducer: Reduce<State, Action>
  
  init(reducer: Reduce<State, Action>) {
    self.reducer = reducer
  }
  
  var body: some ReducerOf<Self> {
    reducer
  }
  
}

Version

• RIBs: 0.9.2
• TCA: 1.10.2