pvmed-server-libs/middlewares/schema_validate.js

pvmed server libs

const router = require('koa-joi-router')
const Joi = router.Joi
const BadRequestError = require('../exceptions/bad_request_error')

module.exports = function(validateParts = {}, options = {}) {
  return async (ctx, next) => {
    for (let part in validateParts) {
      const schema = validateParts[part]
      let inputParams
      switch (part) {
        case 'query':
          inputParams = ctx.state.query || ctx.request.query
          break
        case 'params':
          inputParams = ctx.params
          break
        case 'body':
          inputParams = ctx.state.body || ctx.request.body
          break
        case 'header':
          inputParams = ctx.headers
      }
      const {
        error,
        value
      } = Joi.validate(inputParams, schema, Object.assign({
        abortEarly: true,
        convert: true,
        allowUnknown: true,
        skipFunctions: false,
        stripUnknown: part === 'body' ? true : false,
        presence: 'optional',
        noDefaults: false,
        escapeHtml: false
      }, options))
      if (error) {
        console.error(`schema validate ${part} error ${error}, ${part}`, inputParams)
        return ctx.throws(new BadRequestError())
      } else {
        ctx.state[part] = value
      }
    }
    return next()
  }
}