package util

import (
	"fmt"
	"strconv"
	"strings"
	"time"
)

const timeFmt = "2006-01-02 15:04:05"

func now() string {
	return time.Now().Format(timeFmt)
}

func since(t time.Time) string {
	s := time.Since(t)
	u := uint64(s)
	if u <= 0 {
		return "0s"
	}
	str := s.String()
	switch {
	case u >= uint64(time.Second):
		f, _ := strconv.ParseFloat(str[:len(str)-1], 64)
		return fmt.Sprintf("%.fs", f)
	case u < uint64(time.Microsecond):
		f, _ := strconv.ParseFloat(str[:len(str)-2], 64)
		return fmt.Sprintf("%.fns", f)
	case u < uint64(time.Millisecond):
		f, _ := strconv.ParseFloat(str[:len(str)-3], 64)
		return fmt.Sprintf("%.fµs", f)
	default:
		f, _ := strconv.ParseFloat(str[:len(str)-2], 64)
		return fmt.Sprintf("%.fms", f)
	}
}
func StoreTitle(section, title string) string {
	return section + "/" + title
}

func UnstoreTitle(storeTitle string) (section, title string) {
	if a := strings.Split(storeTitle, "/"); len(a) == 2 {
		return a[0], a[1]
	}
	return
}