exports.register = async (req, res, next) => {
    var profilePicturePath = "";

    if(!req.files.profilePicture && !req.fields.profilePicture){
      req.files.profilePicture = '../../img/icon_default.png';
    }else if(!req.files.profilePicture && req.fields.profilePicture){
       req.files.profilePicture = '../../img/icon_default.png';
    }else{
      if(req.files.profilePicture.type != 'application/octet-stream' && req.files.profilePicture.type != 'image/jpeg' &&
          req.files.profilePicture.type != 'image/jpg' && req.files.profilePicture.type != 'image/png'){
          return next("File Uploaded for Profile is not an image.");
      }
    }

    if (req.fields.password !== req.fields.passwordConf) {
      var err = new Error('Passwords do not match.');
      err.status = 402;
        return next(err);
    }


  try {

      if (req.fields.firstname && req.fields.lastname && req.fields.username && req.fields.email
            && req.fields.password && req.fields.passwordConf && req.fields.birthDate
            && req.fields.gender) //&& req.fields.alias
      {

          let existingUsername = await User.checkUsernameAsync(req.fields.username);

          if(existingUsername != null){
               res.send({ status: 406 });
          }

          let existingEmail = await User.checkEmailAsync(req.fields.email);
          if(existingEmail != null){
             res.send({ status: 405 });
          }

          let profilePicturePath = await exports.uploaderAsync(req.files.profilePicture);

          if(!profilePicturePath){
            profilePicturePath = '../../img/icon_default.png';
          }

         var userData = new User({
              firstname: req.fields.firstname,
              surname: req.fields.lastname,
              username: req.fields.username,
              email: req.fields.email,
              password: req.fields.password,
              //passwordConf: req.fields.passwordConf,
              birthday: req.fields.birthDate,
              gender: req.fields.gender,
              //aliasImg: aliasPicturePath,
              profileImg:  profilePicturePath,
            });

         userData.save()
          .then(user => {
              var token = new Token({ _userId: user._id, token: crypto.randomBytes(16).toString('hex') });
              token.save();
              return { user: user, token: token };
          })

          .then(savedToken => {

                var transporter = nodemailer.createTransport({ service: "Gmail",
                                                                    auth: {
                                                                  user: credentials.emailAddress,
                                                                  pass: credentials.password
                                                              }
                                                            });
                var mailOptions = { from: 'no-reply@thinknoel.com', to: savedToken.user.email, subject: 'Account Verification Token', text: 'Hello,\n\n' +
                                  'Please verify your account by clicking the   link: \nhttp:\/\/' + req.headers.host + '\/Register\/confirm?token=' + savedToken.token.token + '.\n' };


                  var transRes = transporter.sendMail(mailOptions);
                  return { transRes: transRes, user: savedToken.user};
            })

            .then(sentMail => {
               // console.log(sentMail);
                res.send({ status: 200, msg: 'A verification email has been sent to ' + sentMail.user.email + '.'});

            })

            .catch(err => {
              //console.log(err);
               next(err);
            });


      }else{
        res.send({ status:403, msg: 'All fields required.' });
      }

  } catch(err) {
    err => res.status(500).json({ msg: err })
  }
};