//
//  TestFlickeringBetweenImmersiveSpacesApp.swift
//  TestFlickeringBetweenImmersiveSpaces
//

import SwiftUI

let scaleForAttachements = SIMD3(2.5, 2.5, 2.5)

@main
struct TestFlickeringBetweenImmersiveSpacesApp: App {
    @Environment(\.openImmersiveSpace) var openImmersiveSpace
    @Environment(\.dismissImmersiveSpace) var dismissImmersiveSpace
    @State private var appModel = AppModel()

    var body: some Scene {
        Group{
            ImmersiveSpace(id: "YellowSpheres") {
                YellowSpheresImmersiveView()
                    .environment(appModel)
                    .onAppear {
                        appModel.immersiveSpaceState = .open
                    }
                    .onDisappear {
                        appModel.immersiveSpaceState = .closed
                    }
            }
            .immersionStyle(selection: .constant(.mixed), in: .mixed)
            
            ImmersiveSpace(id: "RedSpheres") {
                RedSpheresImmersiveView()
                    .environment(appModel)
                    .onAppear {
                        appModel.immersiveSpaceState = .open
                    }
                    .onDisappear {
                        appModel.immersiveSpaceState = .closed
                    }
            }
            .immersionStyle(selection: .constant(.mixed), in: .mixed)
        }
        .onChange(of: appModel.immersiveSpaceID) { oldValue, newValue in
            Task {
                await dismissImmersiveSpace()
                let result = await openImmersiveSpace(id: appModel.immersiveSpaceID)
                switch result {
                case .opened:
                    print("ImmersiveSpace openned")
                case .error:
                    assertionFailure("could not open ImmersiveSpace")
                    
                case .userCancelled:
                    fallthrough
                @unknown default:
                    assertionFailure("could not open ImmersiveSpace")
                }
            }
        }
     }
}