package main

import (
	"bufio"
	"flag"
	"fmt"
	"log"
	"os"
	"strings"

	"github.com/GeertJohan/yubigo"
	"github.com/facebookgo/flagenv"
	_ "github.com/joho/godotenv/autoload"
)

var (
	clientID  = flag.String("client-id", "", "yubikey client ID")
	secretKey = flag.String("secret-key", "", "yubikey secret key")
)

func main() {
	flagenv.Parse()
	flag.Parse()

	ya, err := yubigo.NewYubiAuth(*clientID, *secretKey)
	if err != nil {
		log.Fatal("bad creds:", err)
	}

	reader := bufio.NewReader(os.Stdin)
	fmt.Print("Enter text: ")
	otp, err := reader.ReadString('\n')
	if err != nil {
		log.Fatal("error reading OTP:", err)
	}
	otp = strings.TrimSpace(otp)
	fmt.Println("input: ", otp)

	pubID, _, err := yubigo.ParseOTP(otp)
	if err != nil {
		log.Fatal("error parsing OTP:", err)
	}

	fmt.Println("prefix:", string(pubID))

	_, ok, err := ya.Verify(otp)
	if err != nil {
		log.Fatal("bad response:", err)
	}
	if !ok {
		log.Fatal("not ok")
	}

	fmt.Println("code is valid")
}