public class DeepLinkListener MonoBehaviour DllImport __Internal priva

public class DeepLinkListener : MonoBehaviour
{
    [DllImport("__Internal")]
    private static extern void DeepLinkReceiverIsAlive();

    [DllImport("__Internal")]
    private static extern string GetDeepLinkURL();

    public bool dontDestroyOnLoad = true;

    public static DeepLinkListener instanse;
    private bool isDeferredAppLinkFetched = false;
    
    void Start()
    {
        if (instanse != null)
        {
            Destroy(gameObject);
        }
        else
        {
            instanse = this;
            DontDestroyOnLoad(gameObject);
#if UNITY_EDITOR
            return;
#endif
            DeepLinkReceiverIsAlive(); // Let the App Controller know it's ok to call URLOpened now.
        }

    }

    private void Update()
    {
        if (!isDeferredAppLinkFetched)
        {
            
            if (FB.IsInitialized)
            {
                //https://developers.facebook.com/docs/unity/reference/current/FB.Mobile.FetchDeferredAppLinkData/
                FB.Mobile.FetchDeferredAppLinkData(DeepLinkCallback);
                isDeferredAppLinkFetched = true;
            }
              
        }
    }

    private void OnApplicationFocus(bool focus)
    {
#if UNITY_EDITOR
        return;
#endif

        if(focus)
        {
            var lastUrl = GetDeepLinkURL();
            if (lastUrl != String.Empty)
            {
                Logger.Debug("DEEPLINK: " + lastUrl);
            }

        }
    }

    public void URLOpened(string url)
    {
        Logger.Debug("App opened by link:" + url);
        
        SharedProperties.SetDeepLinkOpened(url);
        var eventParams = url.Length > 0 ? SKDeepLinkParser.ParseUrl(url) : null;
        if (eventParams != null)
        {
            AppMetrica.Instance.ReportEvent(MetricaHelper.appOpenedByLink, eventParams);
        } 
        else
        {
            AppMetrica.Instance.ReportEvent(MetricaHelper.appOpenedByLink);
        }

    }

    void DeepLinkCallback(IAppLinkResult result)
    {
        var url = result.Url;
        if (!string.IsNullOrEmpty(url))
        {
            SharedProperties.SetDeepLinkOpened(url);
            var eventParams = url.Length > 0 ? SKDeepLinkParser.ParseUrl(url) : null;
            
            if (eventParams != null)
            {
                AppMetrica.Instance.ReportEvent(MetricaHelper.appOpenedByDeferredLink, eventParams);
            }
            else
            {
                AppMetrica.Instance.ReportEvent(MetricaHelper.appOpenedByDeferredLink);
            }
        }
    }
}