package eVVM.apk.helper;


import android.util.Log;

import java.math.BigInteger;
import java.util.ArrayList;
import java.util.List;

/**
 * @Author leisurexi
 * @Description 进制转换工具类
 * @Date 2019/6/3 19:51
 */
public class ConversionUtil {

    /**
     * 十进制转换为二进制字符串
     */
    public static String decToBin(int number) {
        return Integer.toBinaryString(number);
    }

    /**
     * 二进制字符串转换为十进制数字
     */
    public static int binToDec(String number) {
        return Integer.valueOf(number, 2);
    }

    /**
     * 十进制转换为十六进制字符串
     */
    public static String decToHex(int number) {
        return Integer.toHexString(number);
    }

    /**
     * 十六进制字符串转十进制数字
     */
    public static int hexToDec(String number) {
        return Integer.valueOf(number, 16);
    }

    /**
     * 十六进字符串制转二进制字符串
     * 这是单个转
     */
    public static String hexToBin(String number) {
        Integer hex = Integer.valueOf(number, 16);
        return Integer.toBinaryString(hex);
    }

    /**
     * 16进制直接转换成为16进制的字符串(无需Unicode解码)
     * @param hexStr  这是整个转
     * @return
     */
    public static String hexStr2Str(String hexStr) {
        String str = "0123456789ABCDEF";
        char[] hexs = hexStr.toCharArray();
        byte[] bytes = new byte[hexStr.length() / 2];
        int n;
        for (int i = 0; i < bytes.length; i++) {
            n = str.indexOf(hexs[2 * i]) * 16;
            n += str.indexOf(hexs[2 * i + 1]);
            bytes[i] = (byte) (n & 0xff);
        }
        return new String(bytes);
    }


    /**
     * 十六进字符串制转二进制字符串
     *  这是整个转
     * @return 10100110000110000110000110000
     */
    public static String hexToBins(String hexStr) {
        if (hexStr.length() < 1)
            return null;
        StringBuilder result = new StringBuilder();
        for (int i = 0; i < hexStr.length() / 2; i++) {
            String hex = String.valueOf(hexStr.charAt(i * 2)) + hexStr.charAt(i * 2 + 1);
            String binStr = Integer.toBinaryString(Integer.valueOf(hex, 16));
            String str = "";
            int shao = 8 - binStr.length();
            for(int k = 0;k < shao;k++){
                str = str + "0";
            }
            binStr = str + binStr;
            result.append(binStr);
//            Log.e("----",hex);
//            Log.e("----",binStr);
        }
        return result.toString();
    }
    /**
     * 16进制转ascii码
     * 格式为 1430303030
     */
    public static String hexToAscii(String hex) {
        StringBuilder sb = new StringBuilder();
        for (int i = 0; i < hex.length() - 1; i += 2) {
            String output = hex.substring(i, (i + 2));
            int decimal = Integer.parseInt(output, 16);
            char c = (char) decimal;
            if (c < 48 || c > 57) {
                continue;
            }
            sb.append(c);
        }
        return sb.toString();
    }

    /**
     * 温度解密
     */
    public static List<String> temperatureDecry(String[] hexNumbers) {
        String bins = "";
//        for (int i = 0; i < hexNumbers.length; i++) {
//            bins += hexToBin(hexNumbers[i]);
//        }
        List<String> result = new ArrayList<>(bins.length() / 2);
        for (int i = 0; i < bins.length(); i++) {
            if (i != 0 && i % 2 == 0) {
                result.add(bins.substring(i - 1, i) + bins.substring(i, i + 1));
            }
        }
        return result;
    }

}