walmart-iOS-code-challenge

Problem Statement

1. Fetch a list of countries in JSON format from this URL: https://gist.githubusercontent.com/peymano-wmt/32dcb892b06648910ddd40406e37fdab/raw/db25946fd77c5873b0303b858e861ce724e0dcd0/countries.json

2. Display all the countries in a UITableView ordered by the position they appear in the JSON. In each table cell, show the country's "name", "region", "code" and "capital" in this format:      

3. The user should be able to scroll thru the entire list of countries.

4. Use a UISearchController to enable filtering by "name" or "capital" as the user types each character of their search.

5. The implementation should be robust (i.e., handle errors and edge cases), support Dynamic Type ,support iPhone and iPad, and support device rotation.

6. Please use UIKit, not SwiftUI, for this exercise.

Solution

The solution was build for both the UIKit and SwiftUI

// UIKit
window.rootViewController = UINavigationController(rootViewController: CountryViewController(viewModel: CountryViewModel()))
// SwiftUI
//let contentView = UIHostingController(rootView: CountryView(viewModel: CountryViewModel()))
//window.rootViewController = contentView

Package Country - Clean Architecture with MVVM and UIKit

Clean architecture pattern emphasizes the sepration of concertns between different layers to create an application structure that is isolated, testable and easy to maintain.

iOS Tech stack

Development Aspect	Tech
Modularity	Swift Package Manager
Multi Threading	swift async-await
Design Pattern	MVVM
Depedency Injection	Dependencies https://github.com/pointfreeco/swift-dependencies - @Dependency
Networking	URLSession
Json Mapping	Decodable
View	UIKit - UITableView
Tests	XCTest

Overview

In this propject i have used the Modular, Clean Architecture, with MVVM design patterns. The app supports iPhone - Portrait and Landscape, iPad - All orientation | Dynamic Type | Light and Dark mode

Reference

I have done a detailed explanation of this architecture in my personal github link Clean Architecture