Initial implementation for Spotify listens export

models/interfaces.go

@@ -25,6 +25,7 @@ import (
 	"time"
 
 	"github.com/spf13/viper"
+	"golang.org/x/oauth2"
 )
 
 // A listen service backend.
@@ -34,6 +35,15 @@ type Backend interface {
 	FromConfig(config *viper.Viper) Backend
 }
 
+type OAuth2Backend interface {
+	Backend
+	// Returns OAuth2 config suitable for this backend
+	OAuth2Config(redirectUrl string) oauth2.Config
+
+	// Setup the OAuth2 client
+	OAuth2Setup(redirectUrl string, token *oauth2.Token) error
+}
+
 type ImportBackend interface {
 	Backend