Workflow

The workflow is as follow:

1. The API starts running on PORT and begins the connection with MongoDB using MONGO_CLIENT_URL.
2. It will accept only GET methods on the routes detailed at Endpoints.
3. When it receives a GET request on the main route (api/v1/:user) it will do the following
   • Call the Intra API:
     1. First it will send a POST request to https://api.intra.42.fr/oauth/token to get an authorization token, using CLIENT_ID and CLIENT_SECRET.
     2. Then using the received token, it will send a GET request to https://api.intra.42.fr/v2/users/:user to get a JSON of information about the user.
   • Parse the received JSON.
   • Send the parsed JSON to the client.
   • Persist it on MongoDB Atlas.
4. When stopped (SIGTERM), it frees everything and shuts down gracefully.

Considerations:

• If the requested user isn’t in the database, it will be added, but if it already exits, only its informations are updated.
• Because of the limitations of C, it can only respond one request at a time.
• If you send invalid methods, you’ll get an 400.
• If you send a method on a invalid URI, you’ll get an 404.
• If you send a non-implemented method on a valid URI, you’ll get an 405.