add index ls command, add table and color support

pkg/es/index.go

@@ -0,0 +1,61 @@
+/*
+Copyright © 2026 Thomas von Dein
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+package es
+
+import (
+	"context"
+	"log"
+	"log/slog"
+
+	"codeberg.org/scip/esctl/pkg/cfg"
+)
+
+func IndexList(conf *cfg.Config) error {
+	res, err := conf.ES.Cat.Indices().Do(context.Background())
+	if err != nil {
+		log.Fatalf("Error getting indicies: %s", err)
+	}
+
+	slog.Debug("ES result", "indicies", res)
+
+	size := len(res)
+
+	if conf.MaxItems > 0 {
+		if size > conf.MaxItems {
+			size = conf.MaxItems
+		}
+	}
+
+	table := NewTable(size)
+
+	table.headers = []string{bold("NAME"), bold("SIZE"), bold("DOCSCOUNT")}
+
+	for idx, index := range res {
+		name := Colorize(*index.Health, *index.Index)
+
+		table.entries[idx] = []string{name, *index.DatasetSize, *index.DocsCount}
+
+		if idx == size-1 {
+			break
+		}
+	}
+
+	table.Sort()
+	table.PrintMarkdown()
+
+	return nil
+}