ARCHITECTURE.md

App Architecture

This app uses the MVP (Model View Presenter) Architechture pattern. (each View Controller is a View)

Current Project Structure

• Data module contains Repositories and Models.
• Presentation module contains Views and Presenters. Each sub-module in Presentation represents a simple user story or feature like Login, Shares. This pattern is known as package by feature.
• Base module contains reusable functionalities for MVP Views and common UIViewController functionalities and
• Extension module contains extensions to first-class Swift classes and iOS Framework classes.

Presentation Logic

• View - delegates user interaction events to the Presenter and displays data passed by the Presenter * All UIViewController, UIView, UITableViewCell subclasses belong to the View layer * Usually the view is passive / dumb - it shouldn't contain any complex logic.
• Presenter - contains the presentation logic and tells the View what to present * Usually we have one Presenter per scene (view controller) * It doesn't reference the concrete type of the View, but rather it references the View protocol that is implemented usually by a UIViewController subclass * It should be a plain Swift class and not reference any iOS framework classes - this makes it easier to reuse it maybe in an macOS application

Useful Resources

MVP & Other presentation patterns

• Using MVP in iOS
• MVP Pattern in iOS
• iOS Architecture Patterns
• Architecture Wars - A New Hope
• GUI Architectures, by Martin Fowler