Cabify Mobile Challenge
Besides providing exceptional transportation services, Cabify also runs a physical store which sells Products. During the year, we apply discounts to them to make it more attractive to clients.
Our products are like this:
Code | Name | Price
-------------------------------------------------
VOUCHER | Cabify Voucher | 5.00€
TSHIRT | Cabify T-Shirt | 20.00€
MUG | Cabify Coffee Mug | 7.50€
Various departments have insisted on the following discounts:
-
The marketing department believes in 2-for-1 promotions (buy two of the same product, get one free), and would like for there to be a 2-for-1 special on
VOUCHERitems. -
The CFO insists that the best way to increase sales is with discounts on bulk purchases (buying x or more of a product, the price of that product is reduced), and demands that if you buy 3 or more
TSHIRTitems, the price per unit should be 19.00€.
Cabify's checkout process allows for items to be scanned in any order, and should return the total amount to be paid.
Examples:
Items: VOUCHER, TSHIRT, MUG
Total: 32.50€
Items: VOUCHER, TSHIRT, VOUCHER
Total: 25.00€
Items: TSHIRT, TSHIRT, TSHIRT, VOUCHER, TSHIRT
Total: 81.00€
Items: VOUCHER, TSHIRT, VOUCHER, VOUCHER, MUG, TSHIRT, TSHIRT
Total: 74.50€
To do
Implement an app where a user can pick products from a list and checkout them to get the resulting price, and see what discounts are applied. You should get the list of products from here. In terms of functionality, we want you to build an app we could put in the store tomorrow.
In Cabify we use Swift 4 to build our iOS app and Kotlin to build our Android app, but we want you to feel comfortable during the exercise, so feel free to pick the best platform for you: Swift/Objective-C or Kotlin/Java
The code should:
- Be written as production-ready code. You will write production code.
- Be easy to grow and easy to add new functionality.
- Have notes attached, explaning the solution and why certain things are included and others are left out.