An API using Node and Express for storing data of, and sending birthday greetings. The aim of this was to focus on displaying maintainability, re-usability, and testability of a simple API.

Coupling has been minimised and Modularity has been maximised by trying to use the single-responsibility principle and dependency injection wherever possible.

Please note that there has been no focus on security, auth, or data reliability as this is a simple proof of concept.

I have tried to split up responsibility into three key areas:

/providers are used to interact with data stores and external services. In this case a local data store and email.

/services handle logic for their specific service, separate from routing, databases, etc.

/validators handle validation of input data

npm i

Node version used: 15.1.0

NPM version used: 7.0.8

npm run test

Mocked tests using Jest and SuperTest can be found in /tests

npm run dev

A Postman Collection has been provided for convenience

The email provider has been very hastily put together, using an un-secure auth method that is being removed by gmail in May 2022. But worked to prove the concept.