add index create,delete, enhance index show, catch empty index arg

TODO.md

@@ -1,2 +1,5 @@
 - [Go client docs](https://www.elastic.co/docs/reference/elasticsearch/clients/go/typed-api)
 - [ES API docs](https://www.elastic.co/docs/api/doc/elasticsearch/operation/operation-indices-get)
+
+- Fix index names custom completion
+- add cluster default <name> which would add a flag to the config, so that no -C is needed subsequently

cmd/index.go

@@ -18,6 +18,7 @@ package cmd
 
 import (
 	"context"
+	"fmt"
 
 	"codeberg.org/scip/esctl/pkg/cfg"
 	"codeberg.org/scip/esctl/pkg/es"
@@ -34,6 +35,8 @@ func Index(conf *cfg.Config) *cli.Command {
 		Commands: []*cli.Command{
 			IndexList(conf),
 			IndexShow(conf),
+			IndexCreate(conf),
+			IndexDelete(conf),
 		},
 	}
 }
@@ -88,5 +91,76 @@ func IndexShow(conf *cfg.Config) *cli.Command {
 
 			return nil
 		},
+
+		// FIXME: doesn't work at all
+		// FIXME: also it would ONLY work if the user uses env vars, -C would not be
+		//        there when the completion output is being generated
+		ShellComplete: func(ctx context.Context, cmd *cli.Command) {
+			if cmd.NArg() > 0 {
+				return
+			}
+
+			indices, err := es.IndexNames(conf)
+			if err != nil {
+				return
+			}
+
+			for _, index := range indices {
+				fmt.Println(index)
+			}
+		},
+	}
+}
+
+func IndexCreate(conf *cfg.Config) *cli.Command {
+	return &cli.Command{
+		Name:    "create",
+		Aliases: []string{"+"},
+		Usage:   "create a new index",
+
+		Flags: []cli.Flag{
+			&cli.BoolFlag{
+				Name:        "wait",
+				Usage:       "wait for active shards",
+				Destination: &conf.Wait,
+				Aliases:     []string{"w"},
+			},
+			&cli.IntFlag{
+				Name:        "shards",
+				Usage:       "number of shards to create",
+				Destination: &conf.Shards,
+				Aliases:     []string{"s"},
+			},
+			&cli.IntFlag{
+				Name:        "replicas",
+				Usage:       "number of replicas to create",
+				Destination: &conf.Replicas,
+				Aliases:     []string{"r"},
+			},
+		},
+
+		Action: func(ctx context.Context, cmd *cli.Command) error {
+			if err := es.IndexCreate(conf, cmd.Args().Get(0)); err != nil {
+				return err
+			}
+
+			return nil
+		},
+	}
+}
+
+func IndexDelete(conf *cfg.Config) *cli.Command {
+	return &cli.Command{
+		Name:    "delete",
+		Aliases: []string{"rm"},
+		Usage:   "delete an index",
+
+		Action: func(ctx context.Context, cmd *cli.Command) error {
+			if err := es.IndexDelete(conf, cmd.Args().Get(0)); err != nil {
+				return err
+			}
+
+			return nil
+		},
 	}
 }

pkg/cfg/config.go

@@ -46,6 +46,8 @@ type Config struct {
 	DefaultCluster     *Cluster
 	Index              string   // index: -i
 	Failed, Partials   bool     // index: flags
+	Shards, Replicas   int      // index create: -s -r
+	Wait               bool     // index create: -w
 	From, To, MaxItems int      // search: flags
 	Filter             []string // search: -F
 	Exclude            string   // cluster compare: -e (regexp)

pkg/es/index.go

@@ -20,11 +20,39 @@ import (
 	"context"
 	"fmt"
 	"log/slog"
+	"strconv"
+	"time"
 
 	"codeberg.org/scip/esctl/pkg/cfg"
+	"github.com/elastic/go-elasticsearch/v9/typedapi/esdsl"
 	"github.com/elastic/go-elasticsearch/v9/typedapi/types/enums/healthstatus"
 )
 
+type Settings struct {
+	wait_for_active_shards string
+	number_of_shards       int
+	number_of_replicas     int
+}
+
+// used for completion
+func IndexNames(conf *cfg.Config) ([]string, error) {
+	res, err := conf.DefaultCluster.ES.Cat.Indices().
+		Header("content-type", "application/json").
+		Header("accept", "application/json").
+		Do(context.Background())
+
+	if err != nil {
+		return nil, fmt.Errorf("Error getting indicies: %s", err)
+	}
+
+	indices := make([]string, len(res))
+	for idx, index := range res {
+		indices[idx] = *index.Index
+	}
+
+	return indices, nil
+}
+
 func IndexList(conf *cfg.Config) error {
 	cat := conf.DefaultCluster.ES.Cat.Indices().
 		// we need to add custom request headers, required for older ES instances
@@ -70,6 +98,10 @@ func IndexList(conf *cfg.Config) error {
 }
 
 func IndexShow(conf *cfg.Config, index string) error {
+	if index == "" {
+		return fmt.Errorf("no index specified")
+	}
+
 	res, err := conf.DefaultCluster.ES.Indices.Get(index).
 		// we need to add custom request headers, required for older ES instances
 		Header("content-type", "application/json").
@@ -81,7 +113,73 @@ func IndexShow(conf *cfg.Config, index string) error {
 
 	slog.Debug("ES result", "index", res)
 
-	// FIXME: add table printer like SnapshotShow
+	table := NewTable(2, 5)
+	table.Addheaders("field", "value")
+
+	ts, err := strconv.ParseInt(res[index].Settings.Index.CreationDate.(string), 10, 64)
+	if err != nil {
+		ts = 0
+	}
+
+	created := time.Unix(ts/1000, 0)
+
+	table.entries = [][]string{
+		{"name", index},
+		{"replicas", *res[index].Settings.Index.NumberOfReplicas},
+		{"shards", *res[index].Settings.Index.NumberOfShards},
+		{"created", created.Format("2006-01-02 15:04:05")},
+		{"uuid", *res[index].Settings.Index.Uuid},
+	}
+
+	table.PrintMarkdown()
+
+	return nil
+}
+
+func IndexCreate(conf *cfg.Config, index string) error {
+	if index == "" {
+		return fmt.Errorf("no index specified")
+	}
+
+	settings := esdsl.NewIndexSettings()
+
+	create := conf.DefaultCluster.ES.Indices.Create(index).
+		Header("content-type", "application/json").
+		Header("accept", "application/json")
+
+	if conf.Wait {
+		create.WaitForActiveShards("all")
+	}
+
+	if conf.Shards > 0 {
+		settings = settings.NumberOfShards(strconv.Itoa(conf.Shards))
+	}
+	if conf.Replicas > 0 {
+		settings = settings.NumberOfReplicas(strconv.Itoa(conf.Replicas))
+	}
+
+	_, err := create.Settings(settings).
+		Do(context.Background())
+
+	if err != nil {
+		return fmt.Errorf("failed to create index: %s", err)
+	}
+
+	return nil
+}
+
+func IndexDelete(conf *cfg.Config, index string) error {
+	if index == "" {
+		return fmt.Errorf("no index specified")
+	}
+
+	_, err := conf.DefaultCluster.ES.Indices.Delete(index).
+		Header("content-type", "application/json").
+		Header("accept", "application/json").
+		Do(context.Background())
+	if err != nil {
+		return fmt.Errorf("failed to delete index: %s", err)
+	}
 
 	return nil
 }