go时间区间统一值对象

package daterange

import (
    "git.ichub.com/general/webcli120/goconfig/base/basedto"
    "github.com/gogf/gf/v2/os/gtime"
    "icd/utils"
    "time"
)

type DateRange struct {
    basedto.BaseEntity
    Start        time.Time      //2021-01-01 00:00:00
    End          time.Time      //2021-01-01 23:59:59
    End2         time.Time      ///2021-01-02 00:00:00  第二天00:00:00
    ZoneShanghai *time.Location `json:"-"`
    ZoneUtc      *time.Location
}

func NewDateRange() *DateRange {
    var dr = &DateRange{}
    dr.InitProxy(dr)
    dr.ZoneShanghai, _ = time.LoadLocation("Asia/Shanghai")
    dr.ZoneUtc = time.UTC

    return dr
}

func (self *DateRange) Yesterday() DateRange {
    return DateRange{}
}
func (self *DateRange) DayBefore() DateRange {
    return DateRange{}
}

func (self *DateRange) ToDateRangeStr() *DateRangeStr {
    var strday = FindBeanDateRangeStr()
    strday.Start = gtime.NewFromTime(self.Start).Layout("2006-01-02")
    strday.End = gtime.NewFromTime(self.End).Layout("2006-01-02")
    return strday
}
func (self *DateRange) ToId(memberId int64) string {
    return self.Start.Format("2006-01-02") + "|" + utils.FormatInt(memberId) + "|0|0"

}
func (self *DateRange) Clone() *DateRange {
    var c = *self
    return &c
}
func (self DateRange) BeforeDay() *DateRange {
    var c = self.Clone()
    c.Start = c.Start.Add(-48 * time.Hour)
    c.End = c.End.Add(-48 * time.Hour)
    return c
}
func (self DateRange) YesterDay() *DateRange {
    var c = self.Clone()
    c.Start = c.Start.Add(-24 * time.Hour)
    c.End = c.End.Add(-24 * time.Hour)
    return c
}
func (self DateRange) Tommorow() *DateRange {
    var c = self.Clone()
    c.Start = c.Start.Add(24 * time.Hour)
    c.End = c.End.Add(24 * time.Hour)
    return c
}

func (self DateRange) ToUtcTime() *DateRange {
    var c = self.Clone()
    c.Start = c.Start.In(self.ZoneUtc)
    c.End = c.End.In(self.ZoneUtc)
    return c
}
func (self DateRange) ToShanghaiTime() *DateRange {
    var c = self.Clone()
    c.Start = c.Start.In(self.ZoneShanghai)
    c.End = c.End.In(self.ZoneShanghai)
    return c
}

func (self DateRange) ToShanghaiDateOnly() *DateRange {
    var c = self.ToShanghaiTime()
    c.Start = time.Date(c.Start.Year(), c.Start.Month(), c.Start.Day(), 0, 0, 0, 0, time.UTC)
    c.End = time.Date(c.End.Year(), c.End.Month(), c.End.Day(), 23, 59, 59, 0, time.UTC)
    c.End2 = c.Start.Add(time.Hour * 24)
    return c
}
func (self DateRange) ToUtcDateOnly() *DateRange {
    var c = self.ToUtcTime()
    c.Start = time.Date(c.Start.Year(), c.Start.Month(), c.Start.Day(), 0, 0, 0, 0, time.UTC)
    c.End = time.Date(c.End.Year(), c.End.Month(), c.End.Day(), 23, 59, 59, 0, time.UTC)
    c.End2 = c.Start.Add(time.Hour * 24)
    return c
}

// shanghai datestr used by es
func (self DateRange) ToShanghaiDateStr() *DateRangeStr {
    var c = self.ToShanghaiDateOnly()
    var dayStr = NewDateRangeStr()
    dayStr.Start = gtime.NewFromTime(c.Start).Layout("2006-01-02") + "T00:00:00+08:00"
    dayStr.End = gtime.NewFromTime(c.End).Layout("2006-01-02") + "T23:59:59+08:00"
    var end2 = c.Start.Add(24 * time.Hour)
    dayStr.End2 = gtime.NewFromTime(end2).Layout("2006-01-02") + "T23:59:59+08:00"
    return dayStr
}