package chis

import (
	"fmt"
	"time"

	"gbase/glog"
)

func GetAgeFromIdCard(idCard string, increment int) (age int) {
	age = 0
	if len(idCard) != 18 {
		return age
	}
	birthdayStr := idCard[6:14]

	// 解析出生日期
	birthday, err := time.Parse("20060102", birthdayStr)
	if err != nil {
		glog.XWarning(fmt.Sprint("time.Parse error : %v\n", err))
		return
	}
	// 计算年龄,几年

	today := time.Now()
	age = today.Year() - birthday.Year()

	firstDayOfNextYear := time.Date(today.Year()+1, 1, 1, 0, 0, 0, 0, time.UTC)
	lastDayOfYear := firstDayOfNextYear.AddDate(0, 0, -1)
	if lastDayOfYear.Month() > birthday.Month() {
		age += increment
	} else if lastDayOfYear.Month() == birthday.Month() && lastDayOfYear.Day() > birthday.Day() {
		age += increment
	} else {
		age += 0
	}

	return age
}