Example of AppCoordinator Object

AppCoordinator.swift

import UIKit

class Coordinator { }

class AppCoordinator {

    fileprivate var isLoggedIn = false
    fileprivate let navigationController:UINavigationController
    fileprivate var childCoordinators = [Coordinator]()

    init(with navigationController:UINavigationController) {
        self.navigationController = navigationController
    }

    deinit {
        print("deallocing \(self)")
    }

    func start() {
        if isLoggedIn {
            showProfile()
        } else {
            showAuthentication()
        }
    }

    fileprivate func showProfile() {
        let profileFlowCoordinator = ProfileFlowCoordinator(navigationController: navigationController)
        profileFlowCoordinator.delegate = self
        profileFlowCoordinator.start()
        childCoordinators.append(profileFlowCoordinator)
    }

    fileprivate func showAuthentication() {
        let authenticationCoordinator = AuthenticationCoordinator(navigationController: navigationController)
        authenticationCoordinator.delegate = self
        authenticationCoordinator.start()
        childCoordinators.append(authenticationCoordinator)
    }

}

extension AppCoordinator : AuthenticationCoordinatorDelegate {

    func coordinatorDidAuthenticate(coordinator:AuthenticationCoordinator) {
        removeCoordinator(coordinator: coordinator)
        showProfile()
    }

    //we need a better way to find coordinators
    fileprivate func removeCoordinator(coordinator:Coordinator) {

        var idx:Int?
        for (index,value) in childCoordinators.enumerated() {
            if value === coordinator {
                idx = index
                break
            }
        }

        if let index = idx {
            childCoordinators.remove(at: index)
        }

    }
}

extension AppCoordinator : ProfileFlowCoordinatorDelegate {
    //TODO:
}