package egg_system_rules

import "time"

func Time2String(date time.Time, format string) string {
	if format == "" {
		format = "2006-01-02 15:04:05"
	}
	timeS := date.Format(format)
	if timeS == "0001-01-01 00:00:00" {
		return ""
	}
	return timeS
}
func String2Time(timeStr string) time.Time {
	toTime, err := time.ParseInLocation("2006-01-02 15:04:05", timeStr, time.Local)
	if err != nil {
		return time.Now()
	}
	return toTime
}

// GetDiffDays 获取两个时间相差的天数，0表同一天，正数表t1>t2，负数表t1<t2
func GetDiffDays(t1, t2 time.Time) int {
	t1 = time.Date(t1.Year(), t1.Month(), t1.Day(), 0, 0, 0, 0, time.Local)
	t2 = time.Date(t2.Year(), t2.Month(), t2.Day(), 0, 0, 0, 0, time.Local)

	return int(t1.Sub(t2).Hours() / 24)
}