handlebars.js

'use strict'

const Handlebars = require('handlebars')

Handlebars.registerHelper('toLowerCase', value => {
  return value.toLowerCase()
})

Handlebars.registerHelper('json', context => {
  if (!context) {
    return JSON.stringify({})
  }

  return JSON.stringify(context, null, 2)
})

Handlebars.registerHelper('transformToArray', arr => {
  return `'${arr.join("','")}'`
})

Handlebars.registerHelper('validMethod', (method, options) => {
  const authorizedMethods = ['GET', 'POST', 'PUT', 'DELETE', 'OPTIONS', 'PATCH']

  /* eslint-disable no-undef */
  if (arguments.length < 3) {
    throw new Error('Handlebars Helper validMethod needs 1 parameter')
  }
  /* eslint-enable no-undef */

  if (authorizedMethods.indexOf(method.toUpperCase()) === -1) {
    return options.inverse(this)
  }

  return options.fn(this)
})

Handlebars.registerHelper('checkSuccessResponses', (responses, options) => {
  const codes = responses ? Object.keys(responses) : []
  const code = codes.find(code => Number(code) >= 200 && Number(code) < 300)
  let result = {}
  if (code) {
    result = options.fn({
      code: code,
      data: 'successful operation'
    })
  } else {
    result = options.fn({
      code: 200,
      data: 'successful operation'
    })
  }

  return result
})

Handlebars.registerHelper('checkErrorResponses', (responses, options) => {
  const codes = responses ? Object.keys(responses) : []
  const code = codes.find(code => Number(code) >= 400 && Number(code) <= 500)
  let result = {}
  if (code) {
    result = options.fn({
      code: code,
      data: 'error operation'
    })
  } else {
    result = options.fn({
      code: 500,
      data: 'error operation'
    })
  }

  return result
})

module.exports = Handlebars