Now that we have the code to load the configuration file for us, we are going to start coding the authentication part of our framework. Spotify currently supports three kinds of authentication: authorization code, client credentials, and implicitly grant. We are going to implement authorization code and client credentials in this chapter, and we will start by implementing the client credentials flow, which is the easiest to start with.
The client credentials flow has some disadvantages over the authorization code flow because the flow does not include authorization and cannot access the user's private data as well as control playback. We will implement and use this flow for now, but we will change to ...
