add index fields filter flags (#27)

cmd/index.go

@@ -260,6 +260,27 @@ func IndexFields(conf *cfg.Config) *cli.Command {
 		Usage:     "show info about field capabilities",
 		UsageText: "index fields <index>",
 
+		Flags: []cli.Flag{
+			&cli.BoolFlag{
+				Name:        "aggretable",
+				Usage:       "include only aggretable fields",
+				Destination: &conf.Aggretable,
+				Aliases:     []string{"a"},
+			},
+			&cli.BoolFlag{
+				Name:        "searchable",
+				Usage:       "include only searchable fields",
+				Destination: &conf.Searchable,
+				Aliases:     []string{"s"},
+			},
+			&cli.StringSliceFlag{
+				Name:        "type",
+				Usage:       "show only fields of this type",
+				Destination: &conf.Filter,
+				Aliases:     []string{"t"},
+			},
+		},
+
 		Action: func(ctx context.Context, cmd *cli.Command) error {
 			index := cmd.Args().Get(0)
 			if index == "" {

pkg/cfg/config.go

@@ -34,7 +34,7 @@ import (
 )
 
 const (
-	Version string = `v0.0.16`
+	Version string = `v0.0.17`
 )
 
 var (
@@ -59,6 +59,8 @@ type Config struct {
 	Shards, Replicas               int      // index create+allocation: -s -r
 	Wait                           bool     // index create: -w
 	Primary                        bool     // index allocation: -p
+	Searchable                     bool     // index fields: -s
+	Aggretable                     bool     // index fields: -a
 	From, To, MaxItems             int      // search: flags
 	Filter                         []string // search: -F
 	Path                           string   // search+doc sh: -p

pkg/es/index.go

@@ -21,6 +21,7 @@ import (
 	"fmt"
 	"log/slog"
 	"regexp"
+	"slices"
 	"strconv"
 	"strings"
 	"time"
@@ -311,17 +312,26 @@ func IndexFields(conf *cfg.Config, index string) error {
 		return fmt.Errorf("failed to retrieve field capabilties: %s", esErrorString(err))
 	}
 
-	table := printer.NewTable(conf, 5, len(res.Fields))
+	table := printer.NewTable(conf, 5, 0)
 	table.Addheaders("field", "type", "searchable", "aggretable", "metadata")
 
 	idx := 0
 	for name, field := range res.Fields {
 		for fieldtype, caps := range field {
 			// fields only have 1 type, so this one is it
-			table.Entries[idx] = []string{name, fieldtype,
+			switch {
+			case conf.Searchable && !caps.Searchable:
+				continue
+			case conf.Aggretable && !caps.Aggregatable:
+				continue
+			case len(conf.Filter) > 0 && !slices.Contains(conf.Filter, fieldtype):
+				continue
+			}
+
+			table.Entries = append(table.Entries, []string{name, fieldtype,
 				fmt.Sprintf("%t", caps.Searchable),
 				fmt.Sprintf("%t", caps.Aggregatable),
-				fmt.Sprintf("%t", *caps.MetadataField)}
+				fmt.Sprintf("%t", *caps.MetadataField)})
 			break
 		}