fix-index-show-completion, add more completions (#29)

pkg/es/role.go

@@ -27,6 +27,23 @@ import (
 	"github.com/elastic/go-elasticsearch/v9/typedapi/types"
 )
 
+func RoleNames(conf *cfg.Config) ([]string, error) {
+	res, err := conf.DefaultCluster.ES.Security.GetRole().
+		Do(context.Background())
+	if err != nil {
+		return nil, fmt.Errorf("failed to get roles: %s", esErrorString(err))
+	}
+
+	roles := make([]string, len(res))
+	idx := 0
+	for name := range res {
+		roles[idx] = name
+		idx++
+	}
+
+	return roles, nil
+}
+
 func RoleList(conf *cfg.Config) error {
 	res, err := conf.DefaultCluster.ES.Security.GetRole().
 		Do(context.Background())