package main
import (
"fmt"
"strconv"
"math/rand"
"crypto/sha256"
"time"
)
func GenerateCode() string {
// Get the current time in nanoseconds.
now := time.Now().UnixNano()
// Generate a random number using the math/rand function.
rand.Seed(time.Now().UnixNano())
randNum := rand.Int63() % 1000000
// Combine the current time, the random number, and a hash of the current time
// to create the OTP.
hash := sha256.New()
hash.Write([]byte(strconv.FormatInt(now, 10)))
otp := strconv.FormatInt(now, 10)[:6] + strconv.FormatInt(randNum, 10)[:6] + fmt.Sprint(hash.Sum(nil)[:6])
// Return the OTP.
return otp
}
func main() {
fmt.Println(GenerateCode())
}
