iosWebViewFix/flutter_inappwebview_ios/ios/Classes/UIApplication/VisibleViewController.swift

//
//  VisibleViewController.swift
//  flutter_inappwebview
//
//  Created by Alexandru Terente on 02.08.2023.
//

import UIKit

extension UIApplication {

    var visibleViewController: UIViewController? {
        guard let rootViewController = keyWindow?.rootViewController else {
            return nil
        }
        return getVisibleViewController(rootViewController)
    }

    private func getVisibleViewController(_ rootViewController: UIViewController) -> UIViewController? {
        if let presentedViewController = rootViewController.presentedViewController {
            return getVisibleViewController(presentedViewController)
        }
        if let navigationController = rootViewController as? UINavigationController {
            return navigationController.visibleViewController
        }
        if let tabBarController = rootViewController as? UITabBarController {
            return tabBarController.selectedViewController
        }
        return rootViewController
    }
}