import ComposableArchitecture
import SharedModels
import Styleguide
import SwiftUI
import TCAExtras

@Reducer
public struct PressureEstimationsFeature {
  
  public init() { }
  
  @Reducer(state: .equatable)
  public enum Destination {
    case equipmentMeasurements(EquipmentMeasurementForm)
  }
  
  @ObservableState
  public struct State: Equatable {
    @Presents public var destination: Destination.State?
    public var equipmentSettings: EquipmentSettingsForm.State
    public var equipmentMeasurements: EquipmentMeasurementForm.State?
    
    public init(
      destination: Destination.State? = nil,
      equipmentSettings: EquipmentSettingsForm.State = .init(),
      equipmentMeasurements: EquipmentMeasurementForm.State? = nil
    ) {
      self.destination = destination
      self.equipmentSettings = equipmentSettings
      self.equipmentMeasurements = equipmentMeasurements
    }
  }
  
  public enum Action: ViewAction {
    case destination(PresentationAction<Destination.Action>)
    case equipmentSettings(EquipmentSettingsForm.Action)
    case view(View)
    
    @CasePathable
    public enum View {
      case nextButtonTapped
    }
  }
  
  public var body: some Reducer<State, Action> {
    Scope(state: \.equipmentSettings, action: \.equipmentSettings) {
      EquipmentSettingsForm()
    }
    Reduce<State, Action> { state, action in
      switch action {
      case .destination:
        return .none
        
      case .equipmentSettings:
        return .none
        
      case let .view(action):
        switch action {
        case .nextButtonTapped:
          return .none
        }
      }
    }
    .ifLet(\.$destination, action: \.destination)
  }
  
}

@ViewAction(for: PressureEstimationsFeature.self)
public struct PressureEstimationsView: View {
  
  @Bindable public var store: StoreOf<PressureEstimationsFeature>
  
  public init(store: StoreOf<PressureEstimationsFeature>) {
    self.store = store
  }
  
  public var body: some View {
    EquipmentSettingsFormView(
      store: store.scope(state: \.equipmentSettings, action: \.equipmentSettings)
    )
  }
}