import UIKit

@objc(PaymentCardScanner)
class PaymentCardScanner: NSObject {
    public static var navController: UIViewController!

    @objc(scan:withBottomText:withTopTextFont:withBottomTextFont:withResolver:withRejecter:)
    func scan(topText: NSString, bottomText: NSString, topTextFont: NSString, bottomTextFont: NSString, resolve: @escaping RCTPromiseResolveBlock, reject: RCTPromiseRejectBlock) -> Void {
        let modelVC: UIViewController
        modelVC = ViewController(topText: topText, bottomText: bottomText, topTextFont: topTextFont, bottomTextFont: bottomTextFont, resolve: resolve)

        DispatchQueue.main.async {
            PaymentCardScanner.navController = UINavigationController(rootViewController: modelVC)
            PaymentCardScanner.navController.modalPresentationStyle = .fullScreen
          let topController = UIApplication.topMostViewController()
            topController?.present(PaymentCardScanner.navController, animated: true, completion: nil)
        }
    }
}

extension UIApplication {
    class func topMostViewController(controller: UIViewController? = UIApplication.shared.keyWindow?.rootViewController) -> UIViewController? {

            if let navigationController = controller as? UINavigationController {
              return topMostViewController(controller: navigationController.visibleViewController)
            }

            if let tabController = controller as? UITabBarController {
              if let selected = tabController.selectedViewController {
                return topMostViewController(controller: selected)
              }
            }

            if let presented = controller?.presentedViewController {
              return topMostViewController(controller: presented)
            }

        return controller
    }
}