refactor: build cobra commands with constructors

cmd/logout.go

@@ -7,21 +7,19 @@ import (
 	"github.com/spf13/cobra"
 )
 
-var logoutCmd = &cobra.Command{
-	Use:   "logout",
-	Short: "Remove stored Deezer credentials",
-	Args:  cobra.NoArgs,
-	RunE: func(cmd *cobra.Command, args []string) error {
-		if err := auth.Clear(); err != nil {
-			return err
-		}
+func newLogoutCmd() *cobra.Command {
+	return &cobra.Command{
+		Use:   "logout",
+		Short: "Remove stored Deezer credentials",
+		Args:  cobra.NoArgs,
+		RunE: func(cmd *cobra.Command, args []string) error {
+			if err := auth.Clear(); err != nil {
+				return err
+			}
 
-		fmt.Println("Successfully logged out.")
+			fmt.Println("Successfully logged out.")
 
-		return nil
-	},
-}
-
-func init() {
-	RootCmd.AddCommand(logoutCmd)
+			return nil
+		},
+	}
 }