MyDATApp/
├── MyDATApp.swift              # App entry point, SDK init
├── ViewModels/
│   ├── WearablesViewModel.swift    # Registration, device management
│   └── StreamViewModel.swift # Streaming, photo capture
└── Views/
    ├── MainAppView.swift           # Navigation
    ├── RegistrationView.swift      # Registration UI
    └── StreamView.swift            # Video preview, capture button

import MWDATCore

@main
struct MyDATApp: App {
    init() {
        do {
            try Wearables.configure()
        } catch {
            assertionFailure("Wearables SDK configuration failed: \(error)")
        }
    }

    var body: some Scene {
        WindowGroup {
            MainAppView()
                .onOpenURL { url in
                    Task {
                        _ = try? await Wearables.shared.handleUrl(url)
                    }
                }
        }
    }
}

import MWDATCore

@MainActor
class WearablesViewModel: ObservableObject {
    @Published var registrationState: String = "Unknown"
    @Published var devices: [DeviceIdentifier] = []

    private let wearables = Wearables.shared

    func observeState() {
        Task {
            for await state in wearables.registrationStateStream() {
                self.registrationState = "\(state)"
            }
        }
        Task {
            for await devices in wearables.devicesStream() {
                self.devices = devices.map { $0.identifier }
            }
        }
    }

    func register() async {
        try? await wearables.startRegistration()
    }

    func unregister() async {
        try? await wearables.startUnregistration()
    }
}

import MWDATCamera
import MWDATCore

@MainActor
class StreamViewModel: ObservableObject {
    @Published var currentFrame: UIImage?
    @Published var streamState: String = "Stopped"
    @Published var capturedPhoto: Data?

    private let wearables = Wearables.shared
    private var deviceSession: DeviceSession?
    private var stream: Stream?

    func startStream() async {
        let config = StreamConfiguration(
            videoCodec: .raw,
            resolution: .medium,
            frameRate: 24
        )
        let selector = AutoDeviceSelector(wearables: wearables)

        do {
            let deviceSession = try wearables.createSession(deviceSelector: selector)
            try deviceSession.start()
            // Wait for the device session to reach the started state
            for await state in deviceSession.stateStream() {
                if state == .started { break }
            }
            guard let stream = try deviceSession.addStream(config: config) else { return }
            self.deviceSession = deviceSession
            self.stream = stream
        } catch {
            return
        }

        guard let stream else { return }

        _ = stream.statePublisher.listen { [weak self] state in
            Task { @MainActor in
                self?.streamState = "\(state)"
            }
        }

        _ = stream.videoFramePublisher.listen { [weak self] frame in
            guard let image = frame.makeUIImage() else { return }
            Task { @MainActor in
                self?.currentFrame = image
            }
        }

        _ = stream.photoDataPublisher.listen { [weak self] photoData in
            Task { @MainActor in
                self?.capturedPhoto = photoData.data
            }
        }

        stream.start()
    }

    func stopStream() {
        stream?.stop()
        deviceSession?.stop()
        stream = nil
        deviceSession = nil
    }

    func capturePhoto() {
        stream?.capturePhoto(format: .jpeg)
    }
}

import MWDATMockDevice

func setupMockDevice() async {
    let mockDeviceKit = MockDeviceKit.shared
    mockDeviceKit.enable()

    guard let device = try? mockDeviceKit.pairGlasses(model: .rayBanMeta) else { return }
    device.don()

    if let videoURL = Bundle.main.url(forResource: "test_video", withExtension: "mov") {
        let camera = device.services.camera
        camera.setCameraFeed(fileURL: videoURL)
    }
}

func tearDownMockDevice() {
    MockDeviceKit.shared.disable()
}