package util

import "crypto/rand"

const charset = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"

func RandomString(length int) (string, error) {
	bytes := make([]byte, length)
	_, err := rand.Read(bytes)
	if err != nil {
		return "", err
	}

	for i := range bytes {
		bytes[i] = charset[int(bytes[i])%len(charset)]
	}

	return string(bytes), nil
}