import ComposableArchitecture
import SwiftUI

@Reducer
public struct InfoViewFeature {

  public init() { }

  @ObservableState
  public struct State: Equatable {
    let titleText: String
    let bodyText: String

    public init(
      title titleText: String,
      body bodyText: String
    ) {
      self.titleText = titleText
      self.bodyText = bodyText
    }
  }

  public enum Action {
    case dismissButtonTapped
  }

  @Dependency(\.dismiss) var dismiss

  public var body: some ReducerOf<Self> {
    Reduce { _, action in
      switch action {
      case .dismissButtonTapped:
        return .run { _ in await self.dismiss() }
      }
    }
  }
}

public struct InfoView: View {
  let store: StoreOf<InfoViewFeature>

  public init(store: StoreOf<InfoViewFeature>) {
    self.store = store
  }

  public var body: some View {
    VStack(spacing: 40) {
      Text(store.bodyText)
        .font(.callout)
        .padding()
      Spacer()
    }
    .navigationTitle(store.titleText)
    .padding(.horizontal)
    .navigationBarBackButtonHidden()
    .toolbar {
      Button("Done") {
        store.send(.dismissButtonTapped)
      }
    }
  }
}

#Preview {
  InfoView(
    store: Store(
      initialState: InfoViewFeature.State(
        title: "Generic Info View",
        body: "Explain what this view does here..."
      ),
      reducer: InfoViewFeature.init
    )
  )
}