package utils

import (
	"fmt"
	"math/rand"
	"strings"
	"time"
)

var characters = []rune("abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890")

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

type StrFormatMap map[string]interface{}

func StrFormat(format string, m StrFormatMap) string {
	args := make([]string, len(m)*2)
	i := 0

	for k, v := range m {
		args[i] = fmt.Sprintf("{%s}", k)
		args[i+1] = fmt.Sprint(v)
		i += 2
	}

	return strings.NewReplacer(args...).Replace(format)
}