public extension NSObject {
    
    func findTopViewController(vc: UIViewController) -> UIViewController {
        
        if (vc.presentedViewController != nil) {
            return UIViewController().findTopViewController(vc:vc.presentedViewController!)
        } else if (vc.isKind(of: AKSideMenu.self)) {
            let rvc = vc as! AKSideMenu
            if let left = rvc.leftMenuViewController {
                return UIViewController().findBestVC(vc: left)
            }else if let right = rvc.rightMenuViewController {
                return UIViewController().findBestVC(vc: right)
            }
            return UIViewController().findTopViewController(vc:rvc)
        } else if (vc.isKind(of: UINavigationController.self)) {
            let rvc = vc as! UINavigationController
            if rvc.viewControllers.count > 0 {
                return UIViewController().findTopViewController(vc:rvc.topViewController!)
            }
            return vc
        } else if (vc.isKind(of: UITabBarController.self)) {
            let rvc = vc as! UITabBarController
            if rvc.viewControllers!.count > 0 {
                return UIViewController().findTopViewController(vc:rvc.selectedViewController!)
            }
            return vc
        } else {
            
            return vc
        }
    }
    
    class func currentTopViewController() -> UIViewController {
        
        let vc = UIApplication.keyWindow!.rootViewController
        return UIViewController().findTopViewController(vc: vc!)
    }
    
}

public extension UIViewController {
    func currentVC() -> UIViewController {
        let vc = UIApplication.keyWindow!.rootViewController
        return findBestVC(vc: vc!)
    }
    
    func findBestVC(vc: UIViewController) -> UIViewController {
        if (vc.presentedViewController != nil) {
            return UIViewController().findBestVC(vc:vc.presentedViewController!)
        } else if (vc.isKind(of: AKSideMenu.self)) {
            let rvc = vc as! AKSideMenu
            if let left = rvc.leftMenuViewController {
                return UIViewController().findBestVC(vc: left)
            }else if let right = rvc.rightMenuViewController {
                return UIViewController().findBestVC(vc: right)
            }
            return UIViewController().findBestVC(vc:rvc)
        } else if (vc.isKind(of: UINavigationController.self)) {
            let rvc = vc as! UINavigationController
            if rvc.viewControllers.count > 0 {
                return UIViewController().findBestVC(vc:rvc.topViewController!)
            }
            return vc
        } else if (vc.isKind(of: UITabBarController.self)) {
            let rvc = vc as! UITabBarController
            if rvc.viewControllers!.count > 0 {
                return UIViewController().findBestVC(vc:rvc.selectedViewController!)
            }
            return vc
        } else {
            
            return vc
        }
    }
}