package com.peanut.common.utils;

import com.sun.org.apache.xerces.internal.impl.dv.util.Base64;

import java.io.UnsupportedEncodingException;
import java.net.URLEncoder;
import java.security.MessageDigest;

public class KdUtils {



    /**
     * MD5加密
     * str 内容
     * charset 编码方式
     * @throws Exception
     */
    public static String MD5(String str, String charset) throws Exception {
        MessageDigest md = MessageDigest.getInstance("MD5");
        md.update(str.getBytes(charset));
        byte[] result = md.digest();
        StringBuffer sb = new StringBuffer(32);
        for (int i = 0; i < result.length; i++) {
            int val = result[i] & 0xff;
            if (val <= 0xf) {
                sb.append("0");
            }
            sb.append(Integer.toHexString(val));
        }
        return sb.toString().toLowerCase();
    }

    /**
     * base64编码
     * str 内容
     * charset 编码方式
     * @throws UnsupportedEncodingException
     */
    public static String base64(String str, String charset) throws UnsupportedEncodingException{
        String encoded = Base64.encode(str.getBytes(charset));
        return encoded;
    }

    public static String urlEncoder(String str, String charset) throws UnsupportedEncodingException{
        return URLEncoder.encode(str, charset);
    }

    /**
     * 电商Sign签名生成
     * content 内容
     * keyValue ApiKey
     * charset 编码方式
     * @throws UnsupportedEncodingException ,Exception
     * @return DataSign签名
     */
    public static String encrypt (String content, String keyValue, String charset) throws Exception
    {
        if (keyValue != null)
        {
            return base64(MD5(content + keyValue, charset), charset);
        }
        return base64(MD5(content, charset), charset);
    }

}