OAuth2 has complexities that you’ll need to understand at least at a high level to integrate external services requiring OAuth2 in your apps.
This article will help you understand OAuth2 so that you can build and integrate external services that allow users to sign up and sign in with their external profiles, such as GitHub, Spotify, Google, etc.
OAuth has a set of key components, parameters, and a different flow you’ll need to understand before building; let’s review them.
When the user tries to give you access to an external resource, you need to direct them to the authorization server with a request that includes the parameters to indicate the data you need from the resource server.
The data you get from OAuth providers is sensitive, so they specifically require OAuth on those endpoints. Security first!
When implementing an OAuth provider, follow this safety and great UX practices.
It’s important to enter the right RedirectURL you provided to the OAuth provider and define only the necessary scopes.
Use this foundation to explore other features like refresh tokens for sessions with longer lives, and always consider the best practices. Happy building.
Since we are using the Spotify API for demonstration, you must set up an account to retrieve a Client ID and Client Secret for authorization.
Finally, import these packages into your main.go file.