package main

import (
	"fmt"
	"net/http"
	"os"
	"time"
)

func main() {
	url := "http://127.0.0.1:8080/healthz"
	if len(os.Args) > 1 {
		url = os.Args[1]
	}

	client := &http.Client{Timeout: 3 * time.Second}
	resp, err := client.Get(url)
	if err != nil {
		fmt.Fprintf(os.Stderr, "healthcheck error: %v\n", err)
		os.Exit(1)
	}
	defer func() { _ = resp.Body.Close() }()

	if resp.StatusCode < 200 || resp.StatusCode >= 300 {
		fmt.Fprintf(os.Stderr, "healthcheck failed: status %s\n", resp.Status)
		os.Exit(1)
	}
}