"use strict";
const crypto = require('crypto');
const zlib = require('zlib');
module.exports = (option, app) => {
  function getkey() {
    let time = app.moment().format("YYYY-MM-DD");
    return app.moment(time).valueOf();
  }
  return async function (ctx, next) {
    let tmpData = '';
    try {
      await next();
      let data = JSON.stringify(ctx.body);
      tmpData = data;
      ctx.body = aesDecrypt(data, 'rayplus_miyao_' + getkey());
    } catch (err) {
      ctx.body = JSON.parse(tmpData);
    }
  };
};



function aesEncrypt(data, key) {
  const cipher = crypto.createCipher('aes192', key);
  var crypted = cipher.update(data, 'utf8', 'hex');
  crypted += cipher.final('hex');
  return crypted;
}

function aesDecrypt(encrypted, key) {
  const decipher = crypto.createDecipher('aes192', key);
  var decrypted = decipher.update(encrypted, 'hex', 'utf8');
  decrypted += decipher.final('utf8');
  return decrypted;
}

function gzip(data) {
  return zlib.gzipSync(buf);
}

function gunzip(buf) {
  return zlib.gunzipSync(buf);
}