/*
 * @FileName:   getTime.go
 * @Author:		JJXu
 * @CreateTime:	2022/3/1 下午6:35
 * @Description:
 */

package stime

import (
	"fmt"
	"time"
)

func StrNowDate() string {
	return TimeToString(time.Now(), Format_Normal_YMD)
}

func StrNowYearMonth() string {
	return TimeToString(time.Now(), Format_Normal_YM)
}

// ThisMorming 今天凌晨
func ThisMorming(format string) (strTime string) {
	thisTime := time.Now()
	year := thisTime.Year()
	month := MonthStrMap[thisTime.Month().String()]
	day := fmt.Sprintf("%02d", thisTime.Day())
	strTime = fmt.Sprintf("%v-%v-%v 00:00:00", year, month, day)
	if format != Format_Normal_YMDhms {
		t1, _ := time.ParseInLocation(Format_Normal_YMDhms, strTime, Loc.Shanghai())
		strTime = t1.Format(format)
	}
	return strTime
}

// ThisMorningUnix 获取当日凌晨的时间戳
func ThisMorningToUnix() int64 {
	thist := time.Now()
	zero_tm := time.Date(thist.Year(), thist.Month(), thist.Day(), 0, 0, 0, 0, thist.Location()).Unix()
	return zero_tm
}

// TomorrowMorning 第二天凌晨
func TomorrowMorning(baseTime time.Time) *time.Time {
	year := baseTime.Year()
	month := MonthStrMap[baseTime.Month().String()]
	day := fmt.Sprintf("%02d", baseTime.Day()+1)
	strTime := fmt.Sprintf("%v-%v-%v 00:00:00", year, month, day)
	res, _ := StringToTime(strTime)
	return res
}

// ThisTimeUnix 获取当前时间的时间戳
func CurrentimeToUnix() int64 {
	return time.Now().Unix()
}

// Currentime 获取当前时间
func Currentime(format string) (strTime string) {
	strTime = time.Now().Format(format)
	return
}

// HoursAgo 若干小时之前的时间
func HoursAgo(hours time.Duration, format string) (lastTimeStr string) {
	lastStamp := time.Now().Unix() - int64((time.Hour * hours).Seconds())
	lastTime := time.Unix(lastStamp, 0).In(Loc.Shanghai())
	lastTimeStr = lastTime.Format(format)
	return
}

// TimeToString 时间转字符串
func TimeToString(t time.Time, format string) string {
	return t.Format(format)
}

// 计算指定月份的天数
func YearMonthToDayNumber(year int, month int) int {
	// 有31天的月份
	day31 := map[int]bool{
		1:  true,
		3:  true,
		5:  true,
		7:  true,
		8:  true,
		10: true,
		12: true,
	}
	if day31[month] == true {
		return 31
	}
	// 有30天的月份
	day30 := map[int]bool{
		4:  true,
		6:  true,
		9:  true,
		11: true,
	}
	if day30[month] == true {
		return 30
	}
	// 计算是平年还是闰年
	if (year%4 == 0 && year%100 != 0) || year%400 == 0 {
		// 得出2月的天数
		return 29
	}
	// 得出2月的天数
	return 28
}

// 求时间差（返回一个数字，该数字单位由传过来的unit决定。若unit为60，则单位是分钟。）
func GetDiffTime(start_time string, end_time string, unit int64) int64 {
	// 转成时间戳
	if len(start_time) == 10 {
		start_time = fmt.Sprintf("%v 00:00:00", start_time)
	}
	if len(end_time) == 10 {
		end_time = fmt.Sprintf("%v 00:00:00", end_time)
	}
	startUnix, _ := time.ParseInLocation("2006-01-02 15:04:05", start_time, Loc.Shanghai())
	endUnix, _ := time.ParseInLocation("2006-01-02 15:04:05", end_time, Loc.Shanghai())
	startTime := startUnix.Unix()
	endTime := endUnix.Unix()
	// 求相差天数
	date := (endTime - startTime) / unit
	return date
}

func TimeSince(pastTime string, format string) string {

	t, err := time.Parse(format, pastTime)
	if err != nil {
		return ""
	}

	diff := time.Since(t)
	if diff.Minutes() < 15 {
		return "刚刚"
	} else if diff.Minutes() >= 15 && diff.Minutes() < 30 {
		return "15分钟前"
	} else if diff.Minutes() >= 30 && diff.Minutes() < 60 {
		return "半小时前"
	} else if diff.Hours() >= 1 && diff.Hours() < 24 {
		return fmt.Sprintf("%d小时前", int(diff.Hours()))
	} else if diff.Hours() >= 24 && diff.Hours() < 24*15 {
		return fmt.Sprintf("%d天前", int(diff.Hours()/24))
	} else if diff.Hours() < 24*30 {
		return "半月前"
	} else if diff.Hours() < 24*30*6 { //小于半年
		return fmt.Sprintf("%d月前", int(diff.Hours()/24/30))
	} else if diff.Hours() < 24*365 { //小于1年
		return "半年前"
	} else {
		return t.Format("2006-01-02 15:04:05")
	}
}