package cn.com.tenlion.util;

import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.HashMap;
import java.util.Map;

/**
 * 15、18位身份证号验证工具类
 * @author renpc
 */
public class IdCardVerifyUtil {

    final static Map<Integer, String> zoneNum = new HashMap<Integer, String>();
    static {
        zoneNum.put(11, "北京");
        zoneNum.put(12, "天津");
        zoneNum.put(13, "河北");
        zoneNum.put(14, "山西");
        zoneNum.put(15, "内蒙古");
        zoneNum.put(21, "辽宁");
        zoneNum.put(22, "吉林");
        zoneNum.put(23, "黑龙江");
        zoneNum.put(31, "上海");
        zoneNum.put(32, "江苏");
        zoneNum.put(33, "浙江");
        zoneNum.put(34, "安徽");
        zoneNum.put(35, "福建");
        zoneNum.put(36, "江西");
        zoneNum.put(37, "山东");
        zoneNum.put(41, "河南");
        zoneNum.put(42, "湖北");
        zoneNum.put(43, "湖南");
        zoneNum.put(44, "广东");
        zoneNum.put(45, "广西");
        zoneNum.put(46, "海南");
        zoneNum.put(50, "重庆");
        zoneNum.put(51, "四川");
        zoneNum.put(52, "贵州");
        zoneNum.put(53, "云南");
        zoneNum.put(54, "西藏");
        zoneNum.put(61, "陕西");
        zoneNum.put(62, "甘肃");
        zoneNum.put(63, "青海");
        zoneNum.put(64, "新疆");
        zoneNum.put(71, "台湾");
        zoneNum.put(81, "香港");
        zoneNum.put(82, "澳门");
        zoneNum.put(91, "外国");
    }

    final static int[] PARITYBIT = {'1', '0', 'X', '9', '8', '7', '6', '5', '4', '3', '2'};
    final static int[] POWER_LIST = { 7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2};

    public IdCardVerifyUtil() {

    }

    /**
     * 身份证验证
     *@param  certNo 号码内容
     *@return 是否有效 null和"" 都是false
     */
    public static boolean isIDCard(String certNo){
        if(certNo == null || (certNo.length() != 15 && certNo.length() != 18)){
            return false;
        }
        final char[] cs = certNo.toUpperCase().toCharArray();
        //校验位数
        int power = 0;
        for(int i=0; i<cs.length; i++){
            if(i==cs.length-1 && cs[i] == 'X'){
                break;//最后一位可以 是X或x
            }
            if(cs[i]<'0' || cs[i]>'9'){
                return false;
            }
            if(i < cs.length -1){
                power += (cs[i] - '0') * POWER_LIST[i];
            }
        }

        //校验区位码
        if(!zoneNum.containsKey(Integer.valueOf(certNo.substring(0,2)))){
            return false;
        }

        //校验年份
        String year = null;
        year = certNo.length() == 15 ? getIdCardCalendar(certNo):certNo.substring(6, 10);


        final int iyear = Integer.parseInt(year);
        if(iyear < 1900 || iyear > Calendar.getInstance().get(Calendar.YEAR)){
            //1900年的PASS，超过今年的PASS
            return false;
        }

        //校验月份
        String month = certNo.length() == 15 ? certNo.substring(8, 10) : certNo.substring(10,12);
        final int imonth = Integer.parseInt(month);
        if(imonth <1 || imonth >12){
            return false;
        }

        //校验天数
        String day = certNo.length() ==15 ? certNo.substring(10, 12) : certNo.substring(12, 14);
        final int iday = Integer.parseInt(day);
        if(iday < 1 || iday > 31){
            return false;
        }

        //校验"校验码"
        if(certNo.length() == 15){
            return true;
        }
        return cs[cs.length -1 ] == PARITYBIT[power % 11];
    }

    private static String getIdCardCalendar(String certNo){
        // 获取出生年月日
        String birthday = certNo.substring(6, 12);
        SimpleDateFormat ft =  new SimpleDateFormat("yyMMdd");
        Date birthdate = null;
        try {
            birthdate = ft.parse(birthday);
        } catch (ParseException e) {
            e.printStackTrace();
        }
        Calendar cDay = Calendar.getInstance();
        cDay.setTime(birthdate);
        String year = String.valueOf(cDay.get(Calendar.YEAR));
        return year;
    }

    /**
     * 获取身份证号中的出生日期
     * @param cardNo 身份证号
     * @return xxxx-xx-xx
     */
    public static String getIdCardBirthday(String cardNo) {
        try {
            if(cardNo == null || cardNo.length() == 0){
                return "身份证号为空";
            }
            SimpleDateFormat sdf =  new SimpleDateFormat("yyyyMMdd");
            if(cardNo.length() == 15){
                String birthday = "19" + cardNo.substring(6,12);
                Date date = sdf.parse(birthday);
                sdf = new SimpleDateFormat("yyyy-MM-dd");
                return sdf.format(date);
            }
            if(cardNo.length() == 18){
                String birthday = cardNo.substring(6,14);
                Date date = sdf.parse(birthday);
                sdf = new SimpleDateFormat("yyyy-MM-dd");
                return sdf.format(date);
            }
        } catch (Exception e){}
        return "";
    }

    /**
     * 获取身份证号中的性别
     * @param cardNo
     * @return -1 无法获取 1男性0女性
     */
    public static String getIdCardGender(String cardNo){
        try {
            if(cardNo == null || cardNo.length() == 0){
                return "-1";
            }
            if(cardNo.length() == 15){
                String genderCode = cardNo.substring(cardNo.length() - 1);
                int res = Integer.parseInt(genderCode);
                if(res % 2 == 0){
                    return "0";
                } else {
                    return "1";
                }
            }
            if(cardNo.length() == 18){
                String genderCode = cardNo.substring(cardNo.length() - 2, cardNo.length() - 1);
                int res = Integer.parseInt(genderCode);
                if(res % 2 == 0){
                    return "0";
                } else {
                    return "1";
                }
            }
        } catch (Exception e){}
        return "-1";
    }

    public static void main(String[] args) {
        boolean isTrue = isIDCard("612701198410267049");
        System.out.println(isTrue);
        System.out.println(getIdCardGender("152822199310146919"));
    }

}