apemanerror/lib/apemanerror.js

Error parser for apeman.

/**
 * Error object of apeman
 * @class Apemanerror
 */
'use strict'

const argx = require('argx')
const uuid = require('uuid')
const defaults = require('defaults')
const ErrorCodes = require('./error_codes')

/** @lends Apemanerror */
class Apemanerror {
  constructor (code, pointer, options) {
    let args = argx(arguments)
    code = args.shift('string|number')
    pointer = args.shift('string') || '.'
    options = args.pop('object') || {}

    const s = this

    let { trigger, context, namespace } = defaults(options, {
      trigger: undefined,
      context: {},
      namespace: '/'
    })

    let id = uuid.v4()
    let name = Apemanerror.nameOfCode(code)

    return {
      id,
      code,
      title: name,
      detail: `Trigger by ${trigger}, with context: ${JSON.stringify(context)}`,
      source: {
        pointer: [ '/', String(namespace).replace(/\./g, '/'), pointer ].join('/').replace(/\/+/g, '/').replace(/\/$/, '')
      },
      meta: { name, trigger, context }
    }
  }

  toJSON () {
    const s = this
    return Object.assign(s, this)
  }
}

Object.assign(Apemanerror, {
  nameOfCode (code) {
    for (let name of Object.keys(ErrorCodes)) {
      let hit = ErrorCodes[ name ] === code
      if (hit) {
        return name
      }
    }
    return code
  }
})

module.exports = Apemanerror