chore: add comments to code

internal/oauth/oauth.go

@@ -21,23 +21,33 @@ type OAuth struct {
 }
 
 func (oauth *OAuth) Init() {
+	// Create a new context and verifier
 	oauth.Context = context.Background()
 	oauth.Verifier = oauth2.GenerateVerifier()
 }
 
 func (oauth *OAuth) GetAuthURL() string {
+	// Return the auth url
 	return oauth.Config.AuthCodeURL("state", oauth2.AccessTypeOffline, oauth2.S256ChallengeOption(oauth.Verifier))
 }
 
 func (oauth *OAuth) ExchangeToken(code string) (string, error) {
+	// Exchange the code for a token
 	token, err := oauth.Config.Exchange(oauth.Context, code, oauth2.VerifierOption(oauth.Verifier))
+
+	// Check if there was an error
 	if err != nil {
 		return "", err
 	}
+
+	// Set the token
 	oauth.Token = token
+
+	// Return the access token
 	return oauth.Token.AccessToken, nil
 }
 
 func (oauth *OAuth) GetClient() *http.Client {
+	// Return the http client with the token set
 	return oauth.Config.Client(oauth.Context, oauth.Token)
 }