Giphy

A simple app for showing gif images, it fetches images from Giphy trending API, and when you play each Giphy after 10 seconds it randomly shows another giphy by using random API.

This app has no external dependency.

I've used Combine and SwiftUI in this project. these are new frameworks announced by Apple in WWDC 2019.

Preview

Design Patterns

MVVM, Reactive Programming, Coordinator

• I used MVVM since it helps to keep the data flow separated from the view itself, as a result, we have more readable and scalable code.

• Reactive Programming saves us from "callback hell", it also saves time in solving complex data flow problems and provides a unique interface for the app modules

• Coordinator pattern keeps the modules separated, each module of the app doesn't know anything about the other one, it means they are testable and reusable, it also provides a very clean look for each module so by looking into a coordinator you can see what the module does and how the data flow works.

Project Structure

• This project contains two coordinators AppCoordinator and GiphyCoordinator as a child, by adding more modules we add more coordinators

• WebAPI is responsible for performing all web requests at the moment we have one group of endpoints called GiphyEndpoint

• FileRepository is designed to read and write data from/to the disk in a thread-safe way

• GiphyRepository is providing all giphy related operators and data, it also keeps the loaded giphy list

• lastly, we have Views and ViewModels for each part and helper files in the Utilities group

I decided to use mp4 for an animated version of Gif files since it's supported on iOS and macOS natively and also smaller so needs less storage and downloads faster

Usage

You can simply open the project with Xcode and run the app, this project has no external dependency.

You can target iOS, iPadOS, and macOS