A new App named WorldOfPAYBACK is planned to be released. One of its first features involves displaying a list of transactions, and a corresponding detail screen for each.

Please create a SwiftUI App based on the following User-Stories:

• As a user of the App, I want to see a list of (mocked) transactions. Each item in the list displays bookingDate, partnerDisplayName, transactionDetail.description, value.amount and value.currency. (see attached JSON File)
• As a user of the App, I want to have the list of transactions sorted by bookingDate from newest (top) to oldest (bottom).
• As a user of the App, I want to get feedback when loading of the transactions is ongoing or an Error occurs. (Just delay the mocked server response for 1-2 seconds and randomly fail it)
• As a user of the App, I want to see an error if the device is offline.
• As a user of the App, I want to filter the list of transactions by category.
• As a user of the App, I want to see the sum of filtered transactions somewhere on the Transaction-list view. (Sum of value.amount)
• As a user of the App, I want to select a transaction and navigate to its details. The details-view should just display partnerDisplayName and transactionDetail.description.
• As a user of the App, I like to see nice UI in general. However, for this coding challenge fancy UI is not required.

• Attached you will find a JSON File (PBTransactions.json) which contains a list of transactions. Just assume that the Backend is not ready yet and the App needs to work with mocked data meanwhile. For now, the Backend-Team has just provided the name of the endpoints for the new Service:

  • Production Environment: "GET https://api.payback.com/transactions"
  • Test Environment: "GET https://api-test.payback.com/transactions"

• The App is planned to be maintained over a long period of time. New Features will be added by a growing Team in the near future.

• The App is planned to be available worldwide supporting many different languages and region related formatting (e.g. Date and Number formatting).

• The Feature you are currently working on is the first out of many. Multiple Teams will add more features in the near future (overall Team size is about 8 Developers and growing). The following list of Features (which are not part of this coding challenge) will give you an idea of what's planned for the upcoming releases.

  1. "Feed"-Feature: Displays different, user-targeted content (displayed via webviews, images, ads etc.). Note: It is also planned to display the sum of all Transactions from the "Transaction"-Feature.
  2. "Online Shopping"-Feature: Lists PAYBACK Partners and gives the possibility to jump to their App/Website.
  3. "Settings"-Feature: Gives the possibility to adjust general Settings.

• We are currently in a transition phase of moving from UIKit to SwiftUI.
• We use Reactive programming and are currently moving from a self built Reactive-Library to Combine. For asynchronous code we are moving to Swift Concurrency.
• We try to keep to as few external dependencies as possible. However, we use Swift Package Manager when we need to add a dependency.
• We are using Jenkins to build, test and deploy our Apps.

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