PaymentDetailsViewLoadable.swift

public protocol PaymentDetailsViewLoadable {
    /// Communication with client
    var output: AnyPublisher<PaymentDetailLoadableOutput, Never> { get }

    /// render payment details view into the view provided
    func renderView(
        componentId: String,
        into containerView: UIView
    )
}

/// Types of publish events  for client
public enum PaymentDetailLoadableOutput {
    case hide
}
public final class PaymentDetailsViewLoader: PaymentDetailsViewLoadable {
    private var cancellables = Set<AnyCancellable>()
    private let subject = PassthroughSubject<PaymentDetailLoadableOutput, Never>()
    public var output: AnyPublisher<PaymentDetailLoadableOutput, Never> {
        subject.eraseToAnyPublisher()
    }

    public func renderView(
        componentId: String,
        into containerView: UIView
    ) {
        let paymentDetailsViewModel = DefaultPaymentDetailsViewModel()
        paymentDetailsViewModel.parentViewModelPublisher
            .sink { [weak self] output in
                switch output {
                case .hide:
                    self?.outputSubject.send(.hide)
                }
            }
            .store(in: &cancellables)
        let paymentDetailsContainer = PaymentDetailsContainerView(
            paymentDetailsViewModel: paymentDetailsViewModel
        )
        containerView.addSubview(paymentDetailsContainer)
        paymentDetailsContainer.leadingAnchor.constraint(equalTo: containerView.leadingAnchor, constant: 0).isActive = true
        paymentDetailsContainer.trailingAnchor.constraint(equalTo: containerView.trailingAnchor, constant: 0).isActive = true
        paymentDetailsContainer.topAnchor.constraint(equalTo: containerView.topAnchor, constant: 0).isActive = true
        paymentDetailsContainer.bottomAnchor.constraint(equalTo: containerView.bottomAnchor, constant: 0).isActive = true
    }
}