Introduction

Prerequisites

1. IDE / code editor
2. SQLite compatible database GUI
3. API testing client tool (Postman, HTTPie, ...)

Initialize the project

npm install
npm prisma:generate

Run the server

npm run dev

open http://localhost:3000

Run tests

npm test
Defaulted in watch mode

Instructions

Important

1. Please turn off any AI helping tool.
2. For the entire test, you are asked to improve the architecture of the codebase to enhance readability and provide the best solutions for each exercise.
3. We don't expect you to know prisma (ORM), feel free to ask whatever you want about it.
4. For simplicity purpose, we don't expect any operation to be transactional.

1. Add validation for Recipe and Ingredients creation

Add rules to validate the format of the provided input before persisting it.
a. A Recipe must have at least 1 ingredient.
b.prepTime cannot be null or 0.
c.cookingTime cannot be null but can be 0.

2. Test recipe creation

Implement a unit test to verify recipe creation and persistence. The test should not rely on any prisma related code. The tested module should be the createRecipeUseCase, do not bother calling the endpoint.
Feel free to refactor createRecipeUseCase if it can help you build your test.

3. Build a Recipe class

We want to add a totalTime property to each recipe. This property should be a computation such as
totalTime = prepTime + cookingTime.

Build a Recipe class, so each instance are valid recipes (with valid values).

1. Implement the class and include totalTime computation.
2. This rule should be tested.
3. Update the code base so every time we manipulate a valid recipe, it manipulates an instance of the Recipe class.