add support for json color output in repl using jq, if installed (#16)

pkg/es/repl.go

@@ -18,6 +18,7 @@ package es
 
 import (
 	"bytes"
+	"context"
 	"crypto/tls"
 	"encoding/base64"
 	"encoding/json"
@@ -25,6 +26,7 @@ import (
 	"io"
 	"net/http"
 	"os"
+	"os/exec"
 	"slices"
 	"strings"
 
@@ -74,9 +76,30 @@ func CallAPI(conf *cfg.Config, input []string) error {
 		return fmt.Errorf("failed to read response body: %s", err)
 	}
 
+	return prettyfiJson(conf, body)
+}
+
+func prettyfiJson(conf *cfg.Config, raw []byte) error {
+	if conf.HaveJQ {
+		cmd := exec.CommandContext(context.Background(), "jq", "-C")
+		cmd.Stdin = bytes.NewReader(raw)
+
+		var out bytes.Buffer
+		cmd.Stdout = &out
+
+		err := cmd.Run()
+		if err != nil {
+			return err
+		}
+
+		fmt.Println(out.String())
+
+		return nil
+	}
+
 	var pretty bytes.Buffer
-	error := json.Indent(&pretty, body, "", "\t")
-	if error != nil {
+	err := json.Indent(&pretty, raw, "", "\t")
+	if err != nil {
 		return fmt.Errorf("json parse error: %s", err)
 	}