Finished refactor of story/chapter/comment related stuff.

internal/auth/permitted.go

@@ -15,8 +15,12 @@ func CheckPermission(ctx context.Context, op string, obj interface{}) error {
 		return ErrUnauthenticated
 	}
 
-	if reflect.TypeOf(obj).Kind() != reflect.Ptr {
-		return CheckPermission(ctx, op, &obj)
+	if v := reflect.ValueOf(obj); v.Kind() == reflect.Struct {
+		ptr := reflect.PtrTo(v.Type())
+		ptrValue := reflect.New(ptr.Elem())
+		ptrValue.Elem().Set(v)
+
+		obj = ptrValue.Interface()
 	}
 
 	var authorized = false