From 93a137d98227d9ff0744a61b6e3b64ceb6b80300 Mon Sep 17 00:00:00 2001
From: ayn2op <ayn2op@gmail.com>
Date: Thu, 30 Jul 2026 23:37:01 -0400
Subject: [PATCH] feat(cmd): add version flag (#822)

---
 cmd/root.go    |  6 ++++++
 cmd/version.go | 18 ++++++++++++++++++
 2 files changed, 24 insertions(+)
 create mode 100644 cmd/version.go

diff --git a/cmd/root.go b/cmd/root.go
index 652be06..b0aafab 100644
--- a/cmd/root.go
+++ b/cmd/root.go
@@ -17,8 +17,14 @@ func Run() error {
 	configPath := flag.String("config-path", config.DefaultPath(), "path of the configuration file")
 	logPath := flag.String("log-path", logger.DefaultPath(), "path of the log file")
 	logLevel := flag.String("log-level", "info", "log level")
+	showVersion := flag.Bool("version", false, "print version and exit")
 	flag.Parse()
 
+	if *showVersion {
+		fmt.Printf("%s\n", buildVersion())
+		return nil
+	}
+
 	var level slog.Level
 	switch *logLevel {
 	case "debug":
diff --git a/cmd/version.go b/cmd/version.go
new file mode 100644
index 0000000..4976a18
--- /dev/null
+++ b/cmd/version.go
@@ -0,0 +1,18 @@
+package cmd
+
+import (
+	"runtime/debug"
+)
+
+func buildVersion() string {
+	info, ok := debug.ReadBuildInfo()
+	if !ok {
+		return "unknown"
+	}
+	switch info.Main.Version {
+	case "", "(devel)":
+		return "v0.0.0-dev"
+	default:
+		return info.Main.Version
+	}
+}