badge-lookup/index.js

const axios = require('axios')
const dotenv = require('dotenv')
const http = require('http')

const getBadgeUrl = require('./getBadgeUrl')

dotenv.config()

const server = http.createServer(async (req, res) => {
  const { searchParams: rawSearchParams, } = new URL(req.url, process.env.ORIGIN)
  const searchParams = Array
    .from(rawSearchParams.entries())
    .reduce(
      (obj, [key, value, ]) => ({
        ...obj,
        [key]: value,
      }),
      {}
    )
  const badgeUrl = await getBadgeUrl(searchParams)

  if (badgeUrl === null) {
    res.writeHead(404, {})
    res.write('No badge available.')
    res.end()
    return
  }

  const response = await axios({
    method: 'GET',
    url: badgeUrl,
    responseType: 'stream'
  })
  res.writeHead(200, { 'content-type': 'image/svg+xml', })
  response.data.on('finish', () => {
    res.end()
  })
  response.data.pipe(res)
})

server.listen(process.env.PORT || 2048)