package random

import (
	"math/rand"
	"time"
)

func RandomString(n int, onlyLetter bool) string {

	var letters []rune

	if onlyLetter {
		letters = []rune("abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ")
	} else {
		letters = []rune("abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789")
	}

	b := make([]rune, n)
	rand.Seed(time.Now().UnixNano())
	for i := range b {
		b[i] = letters[rand.Intn(len(letters))]
	}
	return string(b)
}