package com.czlis.interfaceCommon.utils;


import com.czlis.common.utils.DateUtils;

import java.util.Date;
import java.util.HashMap;
import java.util.Map;

public class HaveRegUtils {

    /**
     * 许可码有效性校验
     * @param company 注册单位
     * @param regkey 许可码
     * @return 有效返回有效期,无效返回空
     */
    public static String haveReg(String company, String regkey){
        String newkey = regkey.replace("-", "");
        String instrsl = RightA(newkey,5);
        newkey = LeftA(newkey,10);
        int year = 1990 + Integer.parseInt(RightA(instrsl,2));
        int day = Integer.parseInt(LeftA(instrsl,3));
        Date expiredate=LisUtil.relativeDateTime(DateUtils.parseDate(year + "/01/01"),day);
        instrsl =DateUtils.parseDateToStr("yyyyMMdd",expiredate);
        if(newkey.equals(haveregister(company,instrsl))){
            return DateUtils.parseDateToStr("yyyy-MM-dd",expiredate);
        }
        return "";
    }

    /**
     * 根据单位名称+有效期生成许可码
     * @param company
     * @param instrsl
     * @return
     */
    private static String haveregister(String company,String instrsl){
        int ll_len= LisUtil.getGbkByteLength(company);
        if(ll_len < 8) return "";
        String newcompany = company + instrsl;
        int il_len= LisUtil.getGbkByteLength(newcompany);
        newcompany = newcompany.toUpperCase();
        int[] il_char = LisUtil.getStringAscii(newcompany);
        long[] il_parm= {0,0,0,0,0,0,0,0};
        for (int i = 0; i < il_char.length; i++) {
            il_parm[1] += il_char[i];
        }
        il_parm[2] = il_parm[1] / il_len;
        il_parm[7] = il_parm[2];
        il_parm[2] = il_parm[1];
        il_parm[1] = il_parm[7];
        int il_i=3;
        for (int i = 0; i < il_char.length; i++) {
            il_parm[il_i] = (int) (il_parm[il_i] + (il_char[i] * il_parm[il_i - 2]) / Math.sqrt(Math.abs(il_parm[il_i - 1])));
        }
        long[] serialnum={0,0,0,0,0};
        serialnum[1]=Math.abs(il_parm[il_i]);
        il_i=4;
        for (int i = 0; i < il_char.length; i++) {
            il_parm[il_i] = (int) (il_parm[il_i] + (il_char[i] * il_parm[il_i - 1]) / Math.sqrt(Math.abs(il_parm[il_i - 2])));
        }
        serialnum[2]=Math.abs(il_parm[il_i]);
        il_i=5;
        for (int i = 0; i < il_char.length; i++) {
            il_parm[il_i] = (int) (il_parm[il_i] + il_char[i] * Math.sqrt(Math.abs(il_parm[il_i - 1] * il_parm[il_i - 2])));
        }
        serialnum[3]=Math.abs(il_parm[il_i]);
        il_i=6;
        for (int i = 0; i < il_char.length; i++) {
            il_parm[il_i] = (int) (il_parm[il_i] + Math.log(Math.abs(il_char[i])) * Math.sqrt(Math.abs(il_parm[il_i - 1]) * LisUtil.logten(Math.abs(il_parm[il_i - 2]))));
        }
        serialnum[4]=Math.abs(il_parm[il_i]);
        double com_sum=serialnum[1]+serialnum[2]+serialnum[3]+serialnum[4];
        double com_sub=Math.abs(serialnum[2]  *  serialnum[3]  -  serialnum[1]  *  serialnum[4] );
        double num1=Math.sqrt(Math.abs( serialnum[1]  -  serialnum[4] ) * Math.abs( serialnum[2]  +  serialnum[3] )) * 3412.971;
        double num2=Math.log( com_sum  *  com_sub ) * 9134.176;
        String sn1=RightA(String.format("%05d",(num1+ num2) * 2 - Math.sqrt(Math.abs(num1* num2)) ),5);
        String sn2=RightA(String.format("%05d", num2 + num1 ),5);
        String sn=Mid(sn2,2,1) + Mid(sn1,1,1) + Mid(sn1,5,1) + Mid(sn1,4,1) + Mid(sn2,3,1) + Mid(sn1,2,1) + Mid(sn2,1,1) + Mid(sn2,5,1) + Mid(sn2,4,1) + Mid(sn1,3,1);
        return sn;
    }
    /**
     * 从字符串第Index位开始截取指定长度的字符
     * @param str 原始字符串
     * @param length 要截取的长度
     * @return 截取后的字符串
     */
    private static String Mid(String str,int Index, int length) {
        // 处理null和空字符串
        if (str == null || str.isEmpty()) {
            return "";
        }
        // 计算起始索引（第2位对应索引1）
        int startIndex = Index - 1;
        // 计算结束索引，确保不超出字符串长度
        int endIndex = Math.min(startIndex + length, str.length());
        // 如果起始索引已经超出字符串长度，返回空
        if (startIndex >= str.length()) {
            return "";
        }
        return str.substring(startIndex, endIndex);
    }
    private static String LeftA(String str,int n) {
        if (str == null || str.isEmpty()) {
            return str;
        }
        int length = Math.min(str.length(), n);
        return str.substring(0, length);
    }
    private static String RightA(String str, int n) {
        if (str == null) {
            return null;
        }
        int startIndex = Math.max(0, str.length() - n);
        return str.substring(startIndex);
    }
    // 测试
    public static void main(String[] args) {

        System.out.println(haveReg("石首市人民医院","63325-15429-00060"));

    }
}