var userValidationSchema = {
  properties: {
    name: {
      type: 'object',
      properties: {
        firstName: {
          type: 'string',
          required: true
        },
        lastName: {
          type: 'string',
          required: true
        }
      }
    },
    username: {
      type: 'string',
      required: true,
      minLength: 3,
      maxLength: 20,
      messages: {
        minLength: 'username must be at least 3 characters long',
        maxLength: 'username must be shorter than 20 characters'
      }
    },
    email: {
      type: 'string',
      required: true,
      format: 'email',
      messages: {
        format: 'this is not a valid email'
      }
    }
  }
};

exports.update = function(req, res) {
  logger.info('PUT /users/:id');

  var validator = revalidator.validate(req.body.user, userValidationSchema);

  if (validator.valid) {
    var userId = req.params.id;
    delete req.body._id;

    User.findByIdAndUpdateQ(userId, req.body.user)
      .then(function() {
        res.send();
      })
      .fail(error)
      .done();
  } else {
    var myUser = req.body.user;
    var errorResponse = {
      'errors': []
    };

    validator.errors.forEach(function(err) {
      var property = err.property;
      var message = err.message;

      errorResponse.errors.push({
        property: [message]
      });
    });

    res.json(null);
    res.json({
      user: myUser
    });
    res.json(422, errorResponse);
    res.send();
  }
};