package com.jfinal.weixin.sdk.encrypt;

import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.NodeList;
import org.xml.sax.InputSource;

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import java.io.StringReader;


public class Program {

    public static void main(String[] args) throws Exception {

        //
        // 第三方回复公众平台
        //

        // 需要加密的明文
        String encodingAesKey = "abcdefghijklmnopqrstuvwxyz0123456789ABCDEFG";
        String token = "pamtest";
        String timestamp = "1409304348";
        String nonce = "xxxxxx";
        String appId = "wxb11529c136998cb6";
        String replyMsg = " 中文<xml><ToUserName><![CDATA[oia2TjjewbmiOUlr6X-1crbLOvLw]]></ToUserName><FromUserName><![CDATA[gh_7f083739789a]]></FromUserName><CreateTime>1407743423</CreateTime><MsgType><![CDATA[video]]></MsgType><Video><MediaId><![CDATA[eYJ1MbwPRJtOvIEabaxHs7TX2D-HV71s79GUxqdUkjm6Gs2Ed1KF3ulAOA9H1xG0]]></MediaId><Title><![CDATA[testCallBackReplyVideo]]></Title><Description><![CDATA[testCallBackReplyVideo]]></Description></Video></xml>";

        WXBizMsgCrypt pc = new WXBizMsgCrypt(token, encodingAesKey, appId);
        String mingwen = pc.encryptMsg(replyMsg, timestamp, nonce);
        System.out.println("加密后: " + mingwen);

        DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
        DocumentBuilder db = dbf.newDocumentBuilder();
        StringReader sr = new StringReader(mingwen);
        InputSource is = new InputSource(sr);
        Document document = db.parse(is);

        Element root = document.getDocumentElement();
        NodeList nodelist1 = root.getElementsByTagName("Encrypt");
        NodeList nodelist2 = root.getElementsByTagName("MsgSignature");

        String encrypt = nodelist1.item(0).getTextContent();
        String msgSignature = nodelist2.item(0).getTextContent();

        String format = "<xml><ToUserName><![CDATA[toUser]]></ToUserName><Encrypt><![CDATA[%1$s]]></Encrypt></xml>";
        String fromXML = String.format(format, encrypt);

        //
        // 公众平台发送消息给第三方，第三方处理
        //

        // 第三方收到公众号平台发送的消息
        String result2 = pc.decryptMsg(msgSignature, timestamp, nonce, fromXML);
        System.out.println("解密后明文: " + result2);

        //pc.verifyUrl(null, null, null, null);
    }
}
