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functional-potatoes

Learn basics of functional design by selling potatoes 🍠.

Problem

Your client wants online shop with potatoes. His potato suppliers provide APIs to check availability, price etc. These APIs are inconsistent and messy. We want to make our front-end colleagues life easier.

First, we want to integrate with provider called bestpotato.com. Example response can be found in this file.

Our response should be of form:

[
  {"name": "Russer", "priceKg": 1.1},
  {"name": "Austrian Crescent (Premium)", "priceKg": 5.08},
]

You can notice that we have to:

  • Drop unneeded fields
  • Extract kind name from inconsistent structure
  • Convert price per ton to price per kg
  • Format kind name, so that each word starts with capital letter and there is a "(Premium)" suffix for potatoes more expensive than 5 units
  • Finally, map fields to "name" and "priceKG"

Let's code! 💻

This repo has a working solution, so you can just read throgh it's code to see how functional design can help you tackle this task.

Instead, I recommend you to git checkout 4fbc87a3, which is the last commit without working solution, try it on your own and then compare with solution.

Do not remember to install requirements.

Good luck and have fun!