package utils

import (
	"time"
)

var cstZone = time.FixedZone("CST", 8*3600)

const (
	TimeFormat = "2006-01-02 15:04:05"
	DateFormat = "2006-01-02"
)

func TodayZeroTimeFormat() string {
	return TodayZero().Format(TimeFormat)
}

func TodayZeroDateFormat() string {
	return TodayZero().Format(DateFormat)
}

func ZeroDateFormat(days int) string {
	return TodayZeroAddDays(days).Format(DateFormat)
}

func TodayZero() time.Time {
	t := time.Now()
	tm := time.Date(t.Year(), t.Month(), t.Day(), 0, 0, 0, 0, cstZone)

	//return time.Now().In(cstZone)
	return tm
}

func MonthDate() string {
	return NowTime().Format("2006-01")
}

func MonthDateAdd(month int) string {
	return NowTime().AddDate(0, month, 0).Format("2006-01")
}

func TodayZeroAddDays(days int) time.Time {
	return TodayZero().AddDate(0, 0, days)
}

func TodayZeroAddDaysDateFormat(days int) string {
	return TodayZero().AddDate(0, 0, days).Format(DateFormat)
}

func YesterdayZero() time.Time {
	return TodayZeroAddDays(-1)
}

func Now() time.Time {
	return time.Now().In(cstZone)
}

func TimeFormatDate(stamp int64) string {
	return time.Unix(stamp, 0).Format(DateFormat)
}

func Yesterday() time.Time {
	return TodayAddDays(-1)
}

func TodayAddDays(days int) time.Time {
	return Now().AddDate(0, 0, days)
}

func NowTime() time.Time {
	return time.Now().In(cstZone)
}