package auth

import (
	"crypto/rand"
	"fmt"
	"math/big"
)

func generateOTP() (string, error) {
	newInt := big.NewInt(10000) // 0 .. 999999
	n, err := rand.Int(rand.Reader, newInt)
	if err != nil {
		return "", err
	}
	return fmt.Sprintf("%04d", n.Int64()), err
}