Validations - Boilerplate

const Joi = require('joi');

const validateParam = (schema, name) => (req, res, next) => {
  const result = Joi.validate({ param: req.params[name] }, schema);
  if (result.error) {
    return res.status(400).json(result.error);
  }
  if (!req.payload) {
    req.payload = {};
  }
  if (!req.payload.params) {
    req.payload.params = {};
  }

  req.payload.params[name] = req.params[name];
  return next();
};

const validateBody = schema => (req, res, next) => {
  const result = Joi.validate(req.body, schema, { abortEarly: false });
  if (result.error) {
    const errors = result.error.details.reduce(
      (acc, curr) =>
        acc.concat({ path: curr.path.join('.'), message: curr.message }),
      [],
    );

    return res.status(400).send({ status: 400, errors });
  }
  if (!req.payload) {
    req.payload = {};
  }
  if (!req.payload.body) {
    req.payload.body = {};
  }
  req.payload.body = result.value;
  return next();
};

const validateObject = (object, schema) => {
  const result = Joi.validate(object, schema, { abortEarly: false });

  if (result.error) {
    return result.error.details;
  }
  return true;
};

module.exports = {
  validateBody,
  validateParam,
  validateObject,
};