package types

import (
	"time"
)

// 格式化
const (
	FormatDatetime = "2006-01-02 15:04:05"
)

var Local = time.Local

func SetLocation(name string) {
	Local, _ = time.LoadLocation(name)
}

// Timestamp 時間戳
type Timestamp int64

func GetUnixNow() Timestamp {
	return Timestamp(time.Now().Unix())
}

func (t Timestamp) Int64() int64 {
	return int64(t)
}

func (t Timestamp) Time() time.Time {
	return time.Unix(t.Int64(), 0)
}

// Datetime 回傳時間字串
func (t Timestamp) Datetime() string {
	return time.
		Unix(t.Int64(), 0).
		In(Local).
		Format(FormatDatetime)
}

// 與現在的時間差
func (t Timestamp) NowSub() time.Duration {
	return time.Since(t.Time())
}

// 時間差
func (t Timestamp) Sub(t2 time.Time) time.Duration {
	return t2.Sub(t.Time())
}