ReThinkingCoordinators-RefactorToCoordinators

ReThinkingCoordinators-RefactorToCoordinators.swift

class NewsFeedCoordinator {
    // #1
    func start(presenter: UIViewController) {
        let newsFeedVC = NewsfeedViewController()
        newsFeedVC.onCreateNewPostOptionSelected = { [weak newsFeedVC] in
            guard let newsFeedVC = newsFeedVC else { return }
            // #2
            self.showCreateNewPostFlow(presenter: newsFeedVC)
        }
        presenter.present(newsFeedVC, animated: true, completion: nil)
    }
    private func showCreateNewPostFlow(presenter: UIViewController) {
        let coordinator = CreateNewPostCoordinator()
        coordinator.start(presenter: presenter)
    }
    // …
}
class CreateNewPostCoordinator {
    // #3
    func start(presenter: UIViewController) {
        let createNewPostVC = CreateNewPostViewController()
        createNewPostVC.onEditPostContentSettings = { [weak createNewPostVC] contentSettings in
            guard let createNewPostVC = createNewPostVC else { return }
            // #4
            self.presentEditPostContentSettings(presenter: createNewPostVC, contentSettings: contentSettings)
        }
        presenter.present(createNewPostVC, animated: true, completion: nil)
    }
    private func presentEditPostContentSettings(presenter: UIViewController, contentSettings: PostContentSettings) {
        let editPostContentSettingsVC = EditPostContentSettingsViewController()
        editPostContentSettingsVC.contentSettings = contentSettings
        presenter.present(editPostContentSettingsVC, animated: true, completion: nil)
    }
    // …
}
class NewsfeedViewController: UIViewController {
    // …
    var onCreateNewPostOptionSelected: (() -> Void)?
    // …
}
// …
class CreateNewPostViewController: UIViewController {
    // …
    var contentSettings = PostContentSettings(expiryDate: nil, isPublic: true)
    var onEditPostContentSettings: ((PostContentSettings) -> Void)?
    // …
}
// …
class EditPostContentSettingsViewController: UIViewController {
    // …
    var contentSettings: PostContentSettings?
    // …
}