package main

import (
	"flag"
	"log"
	"runtime"
)

const (
	appName     = "rngpotd"
	appVersion  = "0.0.3"
	userAgent   = appName + "/" + appVersion
	serverAgent = "nginx/1.27.2"

	minimumGoMaxProcs = 4
	maximumGoMaxProcs = 8
)

var (
	listenEndpoint string
)

func init() {
	flag.StringVar(&listenEndpoint, "listen", ":8888", "listen (\":port\", \"address:port\")")
}

func main() {
	gmp := runtime.GOMAXPROCS(0)
	if gmp < minimumGoMaxProcs {
		runtime.GOMAXPROCS(minimumGoMaxProcs)
	} else if gmp > maximumGoMaxProcs {
		runtime.GOMAXPROCS(maximumGoMaxProcs)
	}

	log.SetFlags(log.Flags() | log.Lmicroseconds)
	flag.Parse()

	log.Printf("%s: starting\n", userAgent)

	app := initFiberApp()
	if app == nil {
		log.Fatal("failed to initialize rngpotd")
	}

	log.Printf("%s: ready\n", userAgent)
	log.Printf("%s: going to listen %q\n", userAgent, listenEndpoint)
	if err := app.Listen(listenEndpoint); err != nil {
		log.Fatal(err)
	}
}