package zy.cloud.wms.common.utils;

/**
 * Created by vincent on 2021/9/11
 */
public class NumToCN {

    private static final String [] pattern ={"零","壹","贰","叁","肆","伍","陆","柒","捌","玖"};
    private static final String [] cPattern ={"","拾","佰","仟","万","拾","佰","仟","亿"};
    private static final String [] cfPattern = {"","角","分"};
    private static final String ZERO = "零";

    public static String format(String moneyString){
        int dotPoint = moneyString.indexOf("."); //判断是否为小数
        String moneyStr;
        if(dotPoint != -1){
            moneyStr = moneyString.substring(0,moneyString.indexOf("."));
        }
        else{
            moneyStr = moneyString;
        }
        StringBuffer fraction;   //小数部分的处理,以及最后的yuan.
        StringBuilder ms = new StringBuilder();
        for(int i = 0;i < moneyStr.length();i++){
            ms.append(pattern[moneyStr.charAt(i) - 48]); //按数组的编号加入对应大写汉字
        }
        int cpCursor = 1;
        for(int j = moneyStr.length() - 1;j > 0;j--){
            ms.insert(j,cPattern[cpCursor]);   //在j之后加字符,不影响j对原字符串的相对位置
            cpCursor = cpCursor == 8?1:cpCursor + 1;    //亿位之后重新循环
        }
        while(ms.indexOf("零拾") != -1){  //当十位为零时用一个"零"代替"零拾"
            //replace的起始于终止位置
            ms.replace(ms.indexOf("零拾"),ms.indexOf("零拾") + 2,ZERO);
        }
        while(ms.indexOf("零佰") != -1){  //当百位为零时,同理
            ms.replace(ms.indexOf("零佰"),ms.indexOf("零佰") + 2,ZERO);
        }
        while(ms.indexOf("零仟") != -1){  //同理
            ms.replace(ms.indexOf("零仟"),ms.indexOf("零仟") + 2,ZERO);
        }
        while(ms.indexOf("零万") != -1){  //万需保留，中文习惯
            ms.replace(ms.indexOf("零万"),ms.indexOf("零万") + 2,"万");
        }
        while(ms.indexOf("零亿") != -1){  //同上
            ms.replace(ms.indexOf("零亿"),ms.indexOf("零亿") + 2,"亿");
        }
        while(ms.indexOf("零零") != -1){//有连续数位出现零，即有以下情况，此时根据习惯保留一个零即可
            ms.replace(ms.indexOf("零零"),ms.indexOf("零零") + 2,ZERO);
        }
        while(ms.indexOf("亿万") != -1){  //特殊情况，如:100000000,根据习惯保留高位
            ms.replace(ms.indexOf("亿万"),ms.indexOf("亿万") + 2,"亿");
        }
        while(ms.lastIndexOf("零") == ms.length()-1){  //当结尾为零j，不必显示,经过处理也只可能出现一个零
            if(ms.indexOf("零") == -1){
                ms.delete(ms.lastIndexOf("零"),ms.lastIndexOf("零") + 1);
            }else{
                break;
            }
        }
        int end;
        if((dotPoint = moneyString.indexOf(".")) != -1 ){ //是小数的进入
            String fs = moneyString.substring(dotPoint + 1,moneyString.length());
            if(!fs.contains("00") || fs.indexOf("00") >= 2){//若前两位小数全为零，则跳过操作
                end = Math.min(fs.length(), 2);  //仅保留两位小数
                fraction = new StringBuffer(fs.substring(0,end));
                for(int j = 0;j < fraction.length();j++){
                    fraction.replace(j,j+1, pattern[fraction.charAt(j) - 48]); //替换大写汉字
                }
                for(int i = fraction.length();i > 0;i--){  //插入中文标识
                    fraction.insert(i,cfPattern[i]);
                }
                fraction.insert(0,"元");      //为整数部分添加标识
            }
            else{
                fraction = new StringBuffer("元整");
            }
        }
        else{
            fraction = new StringBuffer("元整");
        }
        //加入小数部分
        ms.append(fraction);
        return ms.toString();
    }

    public static void main(String [] ar){
        System.out.println(NumToCN.format("10005022.123009"));
        System.out.println(NumToCN.format("0.12"));
    }

}