feat: added --version argumet

config/config.go

@@ -11,14 +11,19 @@ import (
 
 var CLIConfig models.CLI
 
-func Parse() {
-	kong.Parse(&CLIConfig,
+func Parse(version, commit string) {
+	ctx := kong.Parse(&CLIConfig,
 		kong.Name("marzban-exporter"),
 		kong.Description("A command-line application for exporting Marzban metrics."),
+		kong.Vars{
+			"version": version,
+			"commit":  commit,
+		},
 	)
+
 	if err := validate(); err != nil {
 		fmt.Fprintln(os.Stderr, err)
-		os.Exit(2)
+		ctx.Exit(2)
 	}
 }
 

main.go

@@ -1,6 +1,7 @@
 package main
 
 import (
+	"fmt"
 	"log"
 	"marzban-exporter/api"
 	"marzban-exporter/config"
@@ -13,6 +14,11 @@ import (
 	"github.com/prometheus/client_golang/prometheus/promhttp"
 )
 
+var (
+	version = "unknown"
+	commit  = "unknown"
+)
+
 func init() {
 	prometheus.MustRegister(
 		// Node-related metrics
@@ -59,7 +65,9 @@ func BasicAuthMiddleware(username, password string) func(http.Handler) http.Hand
 }
 
 func main() {
-	config.Parse()
+	config.Parse(version, commit)
+
+	fmt.Println("Marzban Exporter", version)
 
 	s := gocron.NewScheduler(time.Local)
 

models/models.go

@@ -1,17 +1,37 @@
 package models
 
+import (
+	"fmt"
+
+	"github.com/alecthomas/kong"
+)
+
 type CLI struct {
-	Port             string `name:"metrics-port" help:"Port to listen on" default:"9090" env:"METRICS_PORT"`
-	ProtectedMetrics bool   `name:"metrics-protected" help:"Whether metrics are protected by basic auth" default:"false" env:"METRICS_PROTECTED"`
-	MetricsUsername  string `name:"metrics-username" help:"Username for metrics if protected by basic auth" default:"metricsUser" env:"METRICS_USERNAME"`
-	MetricsPassword  string `name:"metrics-password" help:"Password for metrics if protected by basic auth" default:"MetricsVeryHardPassword" env:"METRICS_PASSWORD"`
-	UpdateInterval   int    `name:"update-interval" help:"Interval for metrics update in seconds" default:"30" env:"UPDATE_INTERVAL"`
-	TimeZone         string `name:"timezone" help:"Timezone used in the application" default:"UTC" env:"TIMEZONE"`
-	InactivityTime   int    `name:"inactivity-time" help:"Time in minutes after which a user is considered inactive" default:"2" env:"INACTIVITY_TIME"`
-	BaseURL          string `name:"marzban-base-url" help:"Marzban panel base URL" env:"MARZBAN_BASE_URL"`
-	ApiUsername      string `name:"marzban-username" help:"Marzban panel username" env:"MARZBAN_USERNAME" required:""`
-	ApiPassword      string `name:"marzban-password" help:"Marzban panel password" env:"MARZBAN_PASSWORD" required:""`
-	SocketPath       string `name:"marzban-socket" help:"Path to Marzban Unix Domain Socket" env:"MARZBAN_SOCKET"`
+	Port             string      `name:"metrics-port" help:"Port to listen on" default:"9090" env:"METRICS_PORT"`
+	ProtectedMetrics bool        `name:"metrics-protected" help:"Whether metrics are protected by basic auth" default:"false" env:"METRICS_PROTECTED"`
+	MetricsUsername  string      `name:"metrics-username" help:"Username for metrics if protected by basic auth" default:"metricsUser" env:"METRICS_USERNAME"`
+	MetricsPassword  string      `name:"metrics-password" help:"Password for metrics if protected by basic auth" default:"MetricsVeryHardPassword" env:"METRICS_PASSWORD"`
+	UpdateInterval   int         `name:"update-interval" help:"Interval for metrics update in seconds" default:"30" env:"UPDATE_INTERVAL"`
+	TimeZone         string      `name:"timezone" help:"Timezone used in the application" default:"UTC" env:"TIMEZONE"`
+	InactivityTime   int         `name:"inactivity-time" help:"Time in minutes after which a user is considered inactive" default:"2" env:"INACTIVITY_TIME"`
+	BaseURL          string      `name:"marzban-base-url" help:"Marzban panel base URL" env:"MARZBAN_BASE_URL"`
+	ApiUsername      string      `name:"marzban-username" help:"Marzban panel username" env:"MARZBAN_USERNAME" required:""`
+	ApiPassword      string      `name:"marzban-password" help:"Marzban panel password" env:"MARZBAN_PASSWORD" required:""`
+	SocketPath       string      `name:"marzban-socket" help:"Path to Marzban Unix Domain Socket" env:"MARZBAN_SOCKET"`
+	Version          VersionFlag `name:"version" help:"Print version information and quit"`
+}
+
+type VersionFlag string
+
+func (v VersionFlag) Decode(ctx *kong.DecodeContext) error { return nil }
+func (v VersionFlag) IsBool() bool                         { return true }
+func (v VersionFlag) BeforeApply(app *kong.Kong, vars kong.Vars) error {
+	fmt.Println("Marzban Exporter")
+	fmt.Printf("Version:\t %s\n", vars["version"])
+	fmt.Printf("Commit:\t %s\n", vars["commit"])
+	fmt.Printf("GitHub: https://github.com/kutovoys/marzban-exporter\n")
+	app.Exit(0)
+	return nil
 }
 
 type AuthTokenResponse struct {