ensure-joi-schema.js

const Joi = require('joi')
const Boom = require('boom')

const getData = req => {
  const data = req.body || req.query
  return data || {}
}

const makeError = err => {
  const { message, details } = err
  const error = Boom.badRequest('Invalid request data schema', { message, details })
  error.output.payload.detail = message
  error.output.payload.errors = details

  return error
}

/**
 * @method ensureJoiSchema
 * @param  {JoiSchema}          schema
 * @return {RestifyMiddleware}
 */
const ensureJoiSchema = schema => (req, res, next) => {
  const data = getData(req)

  Joi.validate(data, schema, (err, value) => {
    if (err) {
      res.$error(makeError(err))

      next(false)
      return
    }

    Object.defineProperty(req, '$requestData', { value, enumerable: true })

    next()
  })
}

module.exports = ensureJoiSchema