SwiftUI UIViewRepresentable with argument passed and delegate function - ios

Question

I am implementing a UIViewController with a ViewModel as an argument passed to the UIViewController, but I can't seem to make the delegate functions to work, what is the correct way of doing this?
CartView.swift
struct PaymentWrapper: UIViewControllerRepresentable {
typealias UIViewControllerType = CustomUIPaymentViewController
#ObservedObject var viewModel: CartViewModel
var vc: CustomUIPaymentViewController?
var foo: (String) -> Void
public init(viewModel: CartViewModel) {
self.viewModel = viewModel
self.vc = CustomUIPaymentViewController.init(token: self.viewModel.mtToken)
}
func makeUIViewController(context: Context) -> CustomUIPaymentViewController {
return vc!
}
func updateUIViewController(_ uiViewController: CustomUIPaymentViewController, context: Context) {
// code
}
func makeCoordinator() -> Coordinator {
Coordinator(vc: vc!, foo: foo)
}
class Coordinator: NSObject, CustomUIPaymentViewControllerDelegate, CustomUINavigationControllerDelegate {
var foo: (String) -> Void
init(vc: CustomUIPaymentViewController, foo: #escaping (String) -> Void) {
self.foo = foo
super.init()
vc.delegate = self
}
func paymentViewController(_ viewController: CustomUIPaymentViewController!, paymentFailed error: Error!) {
foo("FAILED")
}
func paymentViewController(_ viewController: CustomUIPaymentViewController!, paymentPending result: TransactionResult!) {
foo("PENDING")
}
func paymentViewController(_ viewController: CustomUIPaymentViewController!, paymentSuccess result: TransactionResult!) {
foo("SUCCESS")
}
func paymentViewController_paymentCanceled(_ viewController: CustomUIPaymentViewController!) {
foo("CANCEL")
}
//This delegate methods is added on ios sdk v1.16.4 to handle the new3ds flow
func paymentViewController(_ viewController: CustomUIPaymentViewController!, paymentDeny result: TransactionResult!) {
}
}
}
struct CartView: View {
#ObservedObject var viewModel = CartViewModel()
var body: some View {
VStack {
Header(title: "Cart", back: false)
}
.sheet(isPresented: $viewModel.showPayment) {
PaymentWrapper(viewModel: self.viewModel) { data in
print(data)
// This returns error "Extra trailing closure passed in call"
}
}
}
}
How do I get the delegate to work? what am I doing wrong? Thank you in advance.