nak event --confirm

event.go

@@ -129,6 +129,11 @@ example:
 			Value:       nostr.Now(),
 			Category:    CATEGORY_EVENT_FIELDS,
 		},
+		&cli.BoolFlag{
+			Name:     "confirm",
+			Usage:    "ask before publishing the event",
+			Category: CATEGORY_EXTRAS,
+		},
 	),
 	ArgsUsage: "[relay...]",
 	Action: func(ctx context.Context, c *cli.Command) error {
@@ -314,6 +319,17 @@ example:
 			if len(relays) > 0 {
 				os.Stdout.Sync()
 
+				if c.Bool("confirm") {
+					relaysStr := make([]string, len(relays))
+					for i, r := range relays {
+						relaysStr[i] = strings.ToLower(strings.Split(r.URL, "://")[1])
+					}
+					time.Sleep(time.Millisecond * 10)
+					if !askConfirmation("publish to [ " + strings.Join(relaysStr, " ") + " ]? ") {
+						return nil
+					}
+				}
+
 				if supportsDynamicMultilineMagic() {
 					// overcomplicated multiline rendering magic
 					ctx, cancel := context.WithTimeout(ctx, 10*time.Second)

helpers.go

@@ -21,8 +21,10 @@ import (
 	"fiatjaf.com/nostr/nip19"
 	"fiatjaf.com/nostr/nip42"
 	"fiatjaf.com/nostr/sdk"
+	"github.com/chzyer/readline"
 	"github.com/fatih/color"
 	jsoniter "github.com/json-iterator/go"
+	"github.com/mattn/go-tty"
 	"github.com/urfave/cli/v3"
 	"golang.org/x/term"
 )
@@ -408,6 +410,49 @@ ex:
 	return list
 }
 
+func askConfirmation(msg string) bool {
+	if isPiped() {
+		tty, err := tty.Open()
+		if err != nil {
+			return false
+		}
+		defer tty.Close()
+
+		fmt.Fprintf(os.Stderr, color.YellowString(msg))
+		answer, err := tty.ReadString()
+		if err != nil {
+			return false
+		}
+
+		// print newline after password input
+		fmt.Fprintln(os.Stderr)
+
+		answer = strings.TrimSpace(string(answer))
+		return answer == "y" || answer == "yes"
+	} else {
+		config := &readline.Config{
+			Stdout:                 color.Error,
+			Prompt:                 color.YellowString(msg),
+			InterruptPrompt:        "^C",
+			DisableAutoSaveHistory: true,
+			EnableMask:             false,
+			MaskRune:               '*',
+		}
+
+		rl, err := readline.NewEx(config)
+		if err != nil {
+			return false
+		}
+
+		answer, err := rl.Readline()
+		if err != nil {
+			return false
+		}
+		answer = strings.ToLower(strings.TrimSpace(answer))
+		return answer == "y" || answer == "yes"
+	}
+}
+
 var colors = struct {
 	reset    func(...any) (int, error)
 	italic   func(...any) string