user validate module

'use strict'

const { check, validationResult } = require('express-validator/check');
const UserCtrl = require('../controllers/userControler')

const userValidate = {};

// Funcion promesa que verifica si el usuario existe en la bd utilizando el metodo del controlador
function checkUser(email, nick, onSuccess, onError) {
  return new Promise ((resolve, reject) => {
    UserCtrl.getUserByEmailOrNick(email, nick,
      function (result) {
        resolve('User valido');
      }, function (error) {
        reject(error.err);
      });
  });
}

userValidate.getCheckRulesUser = [
    check('nick').exists().withMessage('nick requerido'),
    check('email').isEmail().withMessage('email invalido')
    .custom( (email, { req }) => {
      const nick = req.body.nick || '';
      console.log('nick request: ', nick);
      return checkUser(email, nick).then(sucess => {
        return email;
      }).catch(error => {
        throw new Error(error);
      })
    }),
    check('password', 'password debe contener al menos 5 caracteres y al menos 1 numero')
    .isLength({ min: 5 })
    .matches(/\d/),
    check('confirmPassword', 'password de confirmacion incorrecta.')
    .exists()
    .custom((confirmPassword, {req}) => {
        return confirmPassword === req.body.password;
    }),
    check('name').exists().withMessage('name requerido'),
    check('surname').exists().withMessage('surname requerido')
];

userValidate.validatePostRequestUser = function (req, res, next) {
  const errors = validationResult(req);
  // Si existen errores
  if (!errors.isEmpty()) {
    return res.status(422).json({
      errors: errors.mapped()
    });
  }
  // si no hay errores se pasa a la accion del request
  next();
};

module.exports = userValidate;