package com.dsh.account.util.weChat;

import org.apache.commons.codec.binary.Base64;
import org.springframework.beans.factory.annotation.Value;

public class WXCore {

    private static final String WATERMARK = "watermark";

    @Value("${wx.appletsAppid}")
    private static String appid;


    /**
     * 解密数据
     *
     * @return
     * @throws Exception
     */
    public static String decrypt(String encryptedData, String sessionKey, String iv) {
        String result = "";
        try {
            AES aes = new AES();
            byte[] resultByte = aes.decrypt(Base64.decodeBase64(encryptedData), Base64.decodeBase64(sessionKey), Base64.decodeBase64(iv));
            if (null != resultByte && resultByte.length > 0) {
                result = new String(WxPKCS7Encoder.decode(resultByte), "UTF-8");
//                JSONObject jsonObject = JSON.parseObject(result);
//                String decryptAppid = jsonObject.getJSONObject(WATERMARK).getString("appid");
//                if(!appid.equals(decryptAppid)){
//                    result = "";
//                }
            }
        } catch (Exception e) {
            result = "";
            e.printStackTrace();
        }
        return result;
    }


//    public static void main(String[] args) throws Exception{
//        String appId = "wx4f4bc4dec97d474b";
//        String encryptedData = "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";
//        String sessionKey = "tiihtNczf5v6AKRyjwEUhQ==";
//        String iv = "r7BXXKkLb8qrSNn05n0qiA==";
//        System.out.println(decrypt(encryptedData, sessionKey, iv));
//    }
}