if (login == "login") {
            fs.readFile("JSON/DB.json", "utf8", function (err, data) {

                //console.log(data);


                var jsonFileArr = []; // Array with .json objects
                jsonFileArr = JSON.parse(data);


                var gotLog = jsonFileArr.some(function (obj) {
                    /* Searches for the same login*/
                    return obj.log == loginData.log;
                })

                var gotPass = jsonFileArr.some(function (obj) {
                    /* Searches for the same password */
                    return obj.pass == loginData.pass;
                })

                if (gotLog && gotPass) {
                    console.log("OK");
                }
                else
                    console.log("Wrong login or password");

            });
        }
        else {
            console.log("Error");
        }

server.post('/auth/login', function(req,res) {
const username = req.body.username;
const password = req.body.password;
if(testEmail(username)){
  dataFacade.getUser({'username' : username}, function(user) {
    if (user) {
      if (bcrypt.compareSync(password, user.password)) {
        req.login({'id': user._id, 'username': user.username, 'permission': user.permission}, function(err) {
          if (err) {
            return res.status(400).send(err);
          } else {
            res.cookie('user', user, cookieParams);
            return res.status(200).send(user);
          }
        });
      } else {
        return res.status(401).send('notAllowed');
      }
    } else {
      return res.status(400).send('notFound');
    }
  });
} else {
  return res.status(401).send('notAllowed');
}