/**
 * 用户controller
 * @author: feng.chen<feng.chen@yoho.cn>
 * @date: 2017/04/13
 */
const _ = require('lodash');
const uuid = require('uuid');
const request = require('request');
const Context = require('../framework/context');
const captchaData = require('../common/captcha');

class CaptchaController extends Context {
  constructor() {
    super();
  }
  captcha(req, res) {
    const random = _.random(0, captchaData.length);
    const captcha = captchaData[random];

    const codeStr = captcha.degrees.reduce((str, rotate) => {
      return str.concat((4 - ((rotate / 90) % 4)) % 4);
    }, '');

    req.session.captcha = codeStr;
    req.session.captchaTimeout = new Date().getTime() + 1000 * 60;
    req.session.captchaSrc = captcha.verifiedGraphicCode;
        return request(`${captcha.verifiedGraphicCode}?imageView2/0/format/jpg/q/70|watermark/2/text/${uuid.v4()}/fontsize/120/dissolve/10`).pipe(res); // eslint-disable-line
  }
  check(req, res, next) {
    // let isCaptcha = req.session.isCaptcha;

    // if (isCaptcha) {
    if (req.body.captcha === req.session.captcha) {
      if (new Date().getTime() > req.session.captchaTimeout) {
        return res.json({
          code: 400,
          captcha: true,
          expired: true,
          message: '验证码过期',
        });
      }
      return next();
    } else {
      return res.json({
        code: 400,
        captcha: true,
        message: '验证码错误',
      });
    }

    // }
    // return next();
  }
}

module.exports = CaptchaController;