add "cluster ls", put "status" into "cluster status" (#5)

pkg/es/cluster.go

@@ -19,6 +19,8 @@ package es
 import (
 	"context"
 	"fmt"
+	"log"
+	"log/slog"
 	"regexp"
 
 	"codeberg.org/scip/esctl/pkg/cfg"
@@ -57,6 +59,65 @@ func ClusterCompare(conf *cfg.Config, leader, follower string) error {
 	return nil
 }
 
+func List(conf *cfg.Config) error {
+	table := NewTable(2, len(conf.Clusters))
+	table.Addheaders("cluster", "uri")
+
+	idx := 0
+	for name, cluster := range conf.Clusters {
+		table.entries[idx] = []string{name, cluster.Uri}
+		idx++
+	}
+
+	table.PrintMarkdown()
+
+	return nil
+}
+
+func Status(conf *cfg.Config) error {
+	clusters := []string{}
+
+	if conf.All {
+		for key, _ := range conf.Clusters {
+			clusters = append(clusters, key)
+		}
+	} else {
+		clusters = []string{"default"}
+	}
+
+	for _, cluster := range clusters {
+		es := conf.DefaultCluster.ES
+		if cluster != "default" {
+			es = conf.Clusters[cluster].ES
+		}
+
+		res, err := es.Cluster.Health().
+			Header("content-type", "application/json").
+			Header("accept", "application/json").
+			Do(context.Background())
+		if err != nil {
+			log.Fatalf("Error getting health: %s", err)
+		}
+
+		slog.Debug("ES result", "cluster health", res)
+
+		table := NewTable(2, 5)
+		table.Addheaders(cluster, "status")
+
+		table.entries = [][]string{
+			{"Cluster Name", Colorize(*&res.Status.Name, res.ClusterName)},
+			{"Active Shards", fmt.Sprintf("%d", res.ActiveShards)},
+			{"Active Primary Shards", fmt.Sprintf("%d", res.ActivePrimaryShards)},
+			{"Indicies", fmt.Sprintf("%d", len(res.Indices))},
+			{"Nodes", fmt.Sprintf("%d", res.NumberOfNodes)},
+		}
+
+		table.PrintMarkdown()
+	}
+
+	return nil
+}
+
 // look for indicies only on leader
 func findIndicesOnlyOnMaster(conf *cfg.Config, indices ClusterIndices, leader, follower string) {
 	exclude := regexp.MustCompile(DefaultExclude)