package utils

import (
	"fmt"
	"time"
)

func GetTodayBegin() time.Time {
	year, month, day := time.Now().Date()
	return time.Date(year, month, day, 0, 0, 0, 0, time.Now().Location())
}

func GetYesterdayBegin() time.Time {
	todayUnix := GetTodayBegin().Unix()
	yesterdayUnix := todayUnix - 3600*24
	return time.Unix(yesterdayUnix, 0)
}

func GetThisMonthBegin() time.Time {
	year, month, _ := time.Now().Date()
	return time.Date(year, month, 0, 0, 0, 0, 0, time.Now().Location())
}

func GetTodayDate() string {
	year := time.Now().Format("2006")
	month := time.Now().Format("01")
	day := time.Now().Format("02")

	return fmt.Sprintf("%s-%s-%s", year, month, day)
}

func DatetimeTransformationTimestamp(datetime string) time.Time {
	//日期转化为时间戳
	timeLayout := "2006-01-02 15:04:05"  //转化所需模板
	loc, _ := time.LoadLocation("Local") //获取时区
	tmp, _ := time.ParseInLocation(timeLayout, datetime, loc)
	tmp.UnixNano()
	return tmp
}

func TimeToDate(dateTime time.Time) string {
	year := dateTime.Format("2006")
	month := dateTime.Format("01")
	day := dateTime.Format("02")

	return fmt.Sprintf("%s-%s-%s", year, month, day)
}

func Timestamp2Date(timestamp int64) string {
	timeLayout := "2006-01-02 15:04:05"
	datetime := time.Unix(timestamp, 0).Format(timeLayout)

	return datetime
}