App-Open Ads

final class AppOpenAdManager: NSObject, ObservableObject, FuseFullScreenAdViewDelegate {
    private let ad: FuseFullScreenAdView

    init(code: String) {
        ad = FuseFullScreenAdView(code: code)
        ad.delegate = self
    }

    func showAd() {
        ad.show()
    }

    func onEvent(adView: FuseFullScreenAdView, event: FuseAdViewEvent) {
        print("Ad event: \(event)")
    }
}

@main
struct iosApp: App {
    @StateObject private var adManager = AppOpenAdManager(code: "<zone_code>")

    var body: some Scene {
        WindowGroup {
            MainView()
                // Display ad on app foreground with 1 second display timeout
                .onReceive(NotificationCenter.default.publisher(for: UIApplication.didBecomeActiveNotification)) { _ in
                    adManager.showAd(timeout: 1)
                }
        }
    }
}

class DemoApplication :
    Application(),
    Application.ActivityLifecycleCallbacks,
    DefaultLifecycleObserver {

    private var currentActivity: Activity? = null

    private var ad = FuseFullScreenAdView(this, "<zone_code>").apply {
        listener = object : FuseFullScreenAdViewListener {
            override fun onEvent(
                adView: FuseFullScreenAdView,
                event: FuseAdViewEvent,
            ) {
                println("Ad event: $event")
            }
        }
    }

    override fun onCreate() {
        super<Application>.onCreate()

        registerActivityLifecycleCallbacks(this)

        ProcessLifecycleOwner.get().lifecycle.addObserver(this)
    }

    override fun onStart(owner: LifecycleOwner) {
        super.onStart(owner)
        // Show the ad (if available) when the app moves to foreground
        currentActivity?.let {
            ad?.show(it, 1000)
        }
    }

    // ActivityLifecycleCallback methods
    override fun onActivityCreated(activity: Activity, savedInstanceState: Bundle?) {}

    override fun onActivityStarted(activity: Activity) {
        // Updating the currentActivity only when an ad is not showing
        if (activity !is AdActivity) {
            currentActivity = activity
        }
    }

    override fun onActivityResumed(activity: Activity) {}

    override fun onActivityPaused(activity: Activity) {}

    override fun onActivityStopped(activity: Activity) {}

    override fun onActivitySaveInstanceState(activity: Activity, outState: Bundle) {}

    override fun onActivityDestroyed(activity: Activity) {}
}