build.js

const request = require('request')
const qs = require('querystring')
const CV = require('./cv')

const {
  GITHUB_USER: githubUser,
  GITHUB_REPO: githubRepo,
  GITHUB_DATA_PATH: githubDataPath,
  PDFLAYER_ACCESS_KEY: pdfLayerAccessKey
} = process.env


const path = `/${githubUser}/${githubRepo}/master/${githubDataPath}`

function getData (cb) {
  if (!githubUser) throw new Error('Missing Github user')
  if (!githubRepo) throw new Error('Missing Github repo name')
  if (!githubDataPath) throw new Error('Missing Github data path')

  request.get(`https://raw.githubusercontent.com${path}`, (err, res, body) => {
    if (err) return cb(err)
    if (res.statusCode !== 200) return cb(body)

    try {
      const parsed = JSON.parse(body)
      cb(null, parsed)
    } catch (err) {
      console.error('Parse error', err)
      cb(body)
    }
  })
}

function buildCV (data, opt, cb) {
  if (!pdfLayerAccessKey) throw new Error('Missing PdfLayer access key')

  const html = CV(data)
  const queryString = qs.stringify(Object.assign({}, opt, {
    access_key: pdfLayerAccessKey,
    force: 1,
    use_print_media: 1,
    margin_top: 70,
    margin_bottom: 70,
    margin_left: 70,
    margin_right: 70
  }))
  request.post({
    url: `http://api.pdflayer.com/api/convert?${queryString}`,
    form: { document_html: html },
    encoding: null
  }, (err, res, body) => {
    if (err) return cb(err)
    if (res.statusCode !== 200) return cb(body)

    cb(null, body)
  })
}

module.exports = (writeData, opt, cb) => {
  if (typeof opt === 'function') {
    cb = opt
    opt = {}
  }
  getData((err, data) => {
    if (err) return cb(err)
    buildCV(data, opt, (err, buf) => {
      if (err) return cb(err)

      writeData(buf, cb)
    })
  })
}

module.exports.buildCV = buildCV