#if DEBUG
  @_spi(Fixtures) import CallsKit
  import SwiftUI

  /// The call screen with no server behind it, for the UI test of its
  /// controls and the snapshots taken there. Debug builds only; launched
  /// with `-CallsCallFixture focus` (or grid, screen, notices), and
  /// optionally `-CallsFixtureControls shown|hidden` to pin the controls,
  /// `-CallsFixtureMore YES` to open the controls menu, `-CallsFixtureDark
  /// YES`, `-CallsFixtureClassic YES`, `-CallsFixtureBackdrop black|white|busy`
  /// for a frame in place of the stage, `-CallsFixtureStagePicture
  /// black|white|busy` for a frame as the picture on the stage's tile (the
  /// filmstrip and labels over it), `-CallsFixtureSelf
  /// muted|cameraOff|sharing` for your own state, `-CallsFixtureSpeaking
  /// silent|low|mid|high` for everyone's speaking glow, and
  /// `-CallsFixtureNoGlass YES` for the material older systems draw in
  /// place of Liquid Glass. For Speaker view (0.4.0): `-CallsFixtureLayout
  /// speaker|grid` (the grid fixture is Grid unless it says), and
  /// `-CallsFixtureSpeaker tom`, `-CallsFixturePinned li`, `-CallsFixtureLift
  /// li` (a tile half way through a drag) and `-CallsFixtureOrder
  /// li,tom,me,ana`. `-CallsFixtureRimGallery silent|low|mid|high` shows,
  /// in place of any call, the warm rim on a name at that level over the
  /// pictures it has to read on (`WarmRimGallery`, 0.4.3).
  struct PhoneCallFixture: View {
    static var requested: CallFixture? {
      UserDefaults.standard.string(forKey: "CallsCallFixture").flatMap(CallFixture.init(rawValue:))
    }
    static var rimGallery: FixtureSpeaking? {
      UserDefaults.standard.string(forKey: "CallsFixtureRimGallery").flatMap(FixtureSpeaking.init(rawValue:))
    }

    let fixture: CallFixture
    @StateObject private var call = Call(playAudio: false)
    @State private var applied = false

    var body: some View {
      let defaults = UserDefaults.standard
      let pinned = defaults.string(forKey: "CallsFixtureControls").map { $0 == "shown" }
      NavigationStack {
        PhoneCall(
          call: call, leave: {},
          style: defaults.bool(forKey: "CallsFixtureClassic") ? .classic : .fullWindow,
          controlsShown: pinned, showingMore: defaults.bool(forKey: "CallsFixtureMore"),
          grid: defaults.string(forKey: "CallsFixtureLayout").map { $0 == "grid" } ?? (fixture == .grid))
      }
      .tint(CallsAppearance.accent)
      .environment(
        \.fixtureBackdrop,
        defaults.string(forKey: "CallsFixtureBackdrop").flatMap(FixtureBackdrop.init(rawValue:)))
      .environment(
        \.fixtureStagePicture,
        defaults.string(forKey: "CallsFixtureStagePicture").flatMap(FixtureBackdrop.init(rawValue:)))
      .environment(\.callOverlayGlass, !defaults.bool(forKey: "CallsFixtureNoGlass"))
      .preferredColorScheme(defaults.bool(forKey: "CallsFixtureDark") ? .dark : .light)
      .onAppear {
        guard !applied else { return }
        applied = true
        fixture.apply(to: call)
        UserDefaults.standard.string(forKey: "CallsFixtureSelf")
          .flatMap(FixtureSelf.init(rawValue:))?.apply(to: call)
        UserDefaults.standard.string(forKey: "CallsFixtureSpeaking")
          .flatMap(FixtureSpeaking.init(rawValue:))?.apply(to: call)
        call.levels.speaker.showFixture(defaults.string(forKey: "CallsFixtureSpeaker"))
        call.arrangement.showPinned(defaults.string(forKey: "CallsFixturePinned").map(StageItem.camera))
        call.arrangement.showLift(defaults.string(forKey: "CallsFixtureLift"))
        call.arrangement.showOrder(
          (defaults.string(forKey: "CallsFixtureOrder") ?? "").split(separator: ",").map(String.init))
      }
    }
  }
#endif