App available here: https://joaopbnogueira.azurewebsites.net/

Source available here: https://github.com/joaopbnogueira/rubyChallenge

Vanilla .Net Core MVC solution with 3 main components

• Frontend React App
• Backend exposed through authenticated API
• SQL Database
• Code published to GitHub & integrated with AppVeyor for CI

Things done:

• React + Typescript + Webpack
• Application logic works as specified

Things left out:

• Debouncing (button) events - e.g. using reactive event streams / redux-cycles and similar libraries
• Several UI/UX improvements. Examples include:
  1. follow cabify design-guidelines
  2. partial/overlay loaders
• Sass support
• Unit/functional testing - definitely a MUST have
• Code splitting
• Server side rendering
• Versioning
• Improved package.json scripts / webpack configuration
• Translations + Localization (currency, format, etc)

Things done:

• Asp .Net Core / MVC / WebApi
• Auth with OpenIDConnect supporting Google and Facebook SSO - (using Auth0's free services) -- Note: OID client_secret is in the settings because this is a sandboxed environment, and is included solely for the convenience of app reviewers
• Flexible logging with Serilog
• Automapper to easily map between domain boarders without having to manually map DTOs
• Fluentvalidation to validate API requests
• EntityFramework
• Application logic works as specified

Things left out:

• Translations + Localization (currency, format, etc)
• Versioning
• Additional Unit, Integration & Performance tests
• Scalability concerns

Code         | Name                |  Price
-------------------------------------------------
VOUCHER      | Cabify Voucher      |   5.00€
TSHIRT       | Cabify T-Shirt      |  20.00€
MUG          | Cafify 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 VOUCHER items.

• 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 TSHIRT items, 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. The interface for the checkout process looks like this (ruby):

co = Checkout.new(pricing_rules)
co.scan("VOUCHER")
co.scan("VOUCHER")
co.scan("TSHIRT")
price = co.total

Using ruby (>= 2.0), implement a checkout process that fulfills the requirements.

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€

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, explaining the solution and why certain things are included and others are left out.