Medium - Flow Controller Demo - Simple Flow

RootFlow.swift

public final class RootFlow {
    
  // MARK: - Private Properties
    
  private let navigationController: UINavigationController
  private var presented: Bool = false
    
  // MARK: - Private Properties - View Controllers
    
  private lazy var simpleViewController = SimpleViewController(delegate: self)
    
  // MARK: - Initialization
    
  public init(navigationController: UINavigationController) {
    self.navigationController = navigationController
  }
    
  // MARK: - Public Methods
    
  public func present(animated: Bool = false) {
    precondition(self.presented == false)
    self.navigationController.pushViewController(self.simpleViewController, animated: animated)
    self.presented = true
  }

}

// MARK: - SimpleViewControllerDelegate

extension RootFlow: SimpleViewControllerDelegate {
  public func simpleViewControllerAction(_ viewController: SimpleViewController) {
    /* Your Action Here: Push, Pop, Present, Dismiss, Make Network Requests */
  }
}