import SwiftUI

struct EvolutionPicker: View {

  @EnvironmentObject private var store: AppStore

  private var selectedEvolution: Binding<StageType> {
    Binding(
      get: { store.state.selectedEvolution },
      set: { evolution in
        store.send(.selectEvolution(evolution: evolution))
      }
    )
  }

  var body: some View {
    Picker("Evolution", selection: selectedEvolution) {
      ForEach(StageType.types) { stage in
        Text(Stage.title(stage)).tag(stage).padding(4.0)
      }
      Divider()
      ForEach(StageType.characteristics) { stage in
        Text(Stage.title(stage)).tag(stage).padding(4.0)
      }
      Divider()
      ForEach(StageType.properties) { stage in
        Text(Stage.title(stage)).tag(stage).padding(4.0)
      }
      Divider()
      ForEach(StageType.custom) { stage in
        Text(Stage.title(stage)).tag(stage).padding(4.0)
      }
    }.padding(.horizontal, 8.0).padding(.vertical, 4.0)
  }
}

struct EvolutionPicker_Previews: PreviewProvider {
  static var previews: some View {
    EvolutionPicker()
  }
}