init auth func

backend/services/spotify.go

@@ -1,9 +1,31 @@
 package services
 
 import (
-	"github.com/zmb3/spotify/v2"
+	"fmt"
+
+	spotifyauth "github.com/zmb3/spotify/v2/auth"
 )
 
-func InitSpotify() *spotify.Client {
-	return nil
+type SpotifyConfig struct {
+	AuthState    string
+	RedirectURL  string
+	ClientID     string
+	ClientSecret string
+}
+
+func InitSpotifyAuth(config SpotifyConfig) *spotifyauth.Authenticator {
+	auth := spotifyauth.New(
+		spotifyauth.WithRedirectURL(config.RedirectURL),
+		spotifyauth.WithClientID(config.ClientID),
+		spotifyauth.WithClientSecret(config.ClientSecret),
+		spotifyauth.WithScopes(
+			spotifyauth.ScopeUserReadPlaybackState,
+			spotifyauth.ScopeUserReadCurrentlyPlaying,
+		),
+	)
+
+	fmt.Println("Authenticate spotify with:")
+	fmt.Println(auth.AuthURL(config.AuthState))
+
+	return auth
 }