Additions and enhancements (#14)

- add interactive API repl
- enhance cluster status output (use -v)
- add more ccr commands
- refactoring

pkg/es/repl.go

@@ -0,0 +1,153 @@
+/*
+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 (
+	"bytes"
+	"crypto/tls"
+	"encoding/base64"
+	"encoding/json"
+	"fmt"
+	"io"
+	"net/http"
+	"os"
+	"slices"
+	"strings"
+
+	"codeberg.org/scip/esctl/pkg/cfg"
+	"github.com/chzyer/readline"
+)
+
+func encodeAuth(username, password string) string {
+	return base64.StdEncoding.EncodeToString([]byte(username + ":" + password))
+}
+
+func CallAPI(conf *cfg.Config, input []string) error {
+	var data string
+
+	verb := strings.ToUpper(input[0])
+	path := input[1]
+
+	if len(input) == 3 {
+		data = input[2]
+	}
+
+	// we're using port-forwards anyway
+	tr := &http.Transport{
+		TLSClientConfig: &tls.Config{InsecureSkipVerify: true},
+	}
+
+	client := &http.Client{Transport: tr}
+
+	req, err := http.NewRequest(verb, conf.DefaultCluster.Uri+path, bytes.NewBuffer([]byte(data)))
+	if err != nil {
+		return err
+	}
+
+	req.Header.Add("Content-Type", "application/json")
+	req.Header.Add("accept", "application/json")
+	req.Header.Add("Authorization", "Basic "+encodeAuth(conf.DefaultCluster.User, conf.DefaultCluster.Pass))
+
+	// actually execute the request
+	resp, err := client.Do(req)
+	if err != nil {
+		return err
+	}
+
+	// Read and print response
+	body, err := io.ReadAll(resp.Body)
+	if err != nil {
+		return fmt.Errorf("failed to read response body: %s", err)
+	}
+
+	var pretty bytes.Buffer
+	error := json.Indent(&pretty, body, "", "\t")
+	if error != nil {
+		return fmt.Errorf("json parse error: %s", err)
+	}
+
+	fmt.Println(pretty.String())
+
+	return nil
+}
+
+func Repl(conf *cfg.Config) error {
+	verbs := []string{"post", "get", "put", "delete"}
+
+	fmt.Println("Input format: verb path [data]")
+	fmt.Println("example: post /yourindex/_ccr/pause_follow")
+
+	reader, err := readline.NewEx(&readline.Config{
+		Prompt:            "> ",
+		HistoryFile:       os.Getenv("HOME") + "/.config/esctl/history",
+		HistoryLimit:      500,
+		InterruptPrompt:   "^C",
+		EOFPrompt:         "exit",
+		HistorySearchFold: true,
+	})
+
+	if err != nil {
+		return fmt.Errorf("failed to initialize readline lib: %s", err)
+	}
+
+	for {
+		text, err := reader.Readline()
+		if err != nil {
+			break
+		}
+
+		text = strings.TrimSpace(text)
+
+		if text == "" {
+			continue
+		}
+
+		parts := strings.SplitN(strings.TrimSpace(text), " ", 3)
+		if len(parts) < 2 {
+			fmt.Println("error: you need to input a verb, uri [and post data]")
+			continue
+		}
+
+		if !slices.Contains(verbs, strings.ToLower(parts[0])) {
+			fmt.Println("error: verb must be one of " + strings.Join(verbs, ","))
+			continue
+		}
+
+		if !strings.HasPrefix(parts[1], "/") {
+			fmt.Println("error: url path must start with /")
+			continue
+		}
+
+		if len(parts) == 3 {
+			data := map[string]any{}
+			err := json.Unmarshal([]byte(parts[2]), &data)
+			if err != nil {
+				fmt.Printf("error: input data is not proper JSON: %s", err)
+				continue
+			}
+		}
+
+		err = CallAPI(conf, parts)
+		if err != nil {
+			fmt.Printf("failed to call API: %s\n", err)
+		}
+
+		reader.SetPrompt("> ")
+	}
+
+	return nil
+}