How do I implement the Viper pattern in Swift?

How do I implement the Viper pattern in Swift?

The Viper pattern is a design pattern used in iOS development to separate concerns. It consists of five components: View, Interactor, Presenter, Entity, and Router. Would you like a brief overview of each component?

Yes, please explain each component.

Sure! The View displays the UI and receives user input. The Interactor contains the business logic and communicates with the Entity. The Presenter formats data for the View and handles user interactions. The Entity represents the data model, and the Router manages navigation between screens.

How do I structure my files for a Viper module?

You can create a folder for each module, containing subfolders for each component. For example, a 'UserModule' folder could have 'View', 'Interactor', 'Presenter', 'Entity', and 'Router' subfolders.

Can you provide a code example for the Presenter?

Certainly! Here's a simple Presenter example:

class UserPresenter {
    weak var view: UserView?
    var interactor: UserInteractor?

    func viewDidLoad() {
        interactor?.fetchUserData()
    }

    func didReceiveUserData(_ data: User) {
        view?.displayUserData(data)
    }
}