Cloudflare Worker for parsing LastFM in Neos

lastfm-for-neos.js

/**
 * Simple Worker that fetches what you are listening to from LastFM
 * then parses it for use inside of NeosVR (or your other app)
 * Note: Make sure you create a Worker Encrypted Environment Variable
 * with your LastFM API Key, this scripts expects you to use key "API_KEY"
 */

// Reach out and get your data from LastFM
async function gatherResponse(response) {
  const { headers } = response
  const contentType = headers.get("content-type") || ""
  if (contentType.includes("application/json")) {
    let lastfm = await response.json()
    let getArtist = JSON.stringify(lastfm.recenttracks.track[0].artist)
    let fixBadJSON = JSON.parse(getArtist.replace('#','')) // LastFM uses dumb symbols
    let artistName = JSON.stringify(fixBadJSON.text)
    let bsNowPlaying = JSON.stringify(lastfm.recenttracks.track[0])
    let fixBadJSON2 = JSON.parse(bsNowPlaying.replace('@','')) // LastFM uses dumb symbols
    let getNowPlaying = JSON.stringify(fixBadJSON2.attr)
    let getAlbumArt = JSON.stringify(fixBadJSON3.image[3].text)
    let songName = JSON.stringify(lastfm.recenttracks.track[0].name)
    let songURL = JSON.stringify(lastfm.recenttracks.track[0].url)
    
    // See if the latest song listed is being currently played
    if (getNowPlaying == null) {
      nowPlaying = false
    }else{
      nowPlaying = true
    }

    let CSV = songName + "," + artistName + "," + songURL + "," + nowPlaying
    return CSV
    }else{
      return response.text('something went wrong')
    }
}

async function handleRequest(request) {
  const init = {
    headers: {
      "content-type": "application/json;charset=UTF-8",
    },
  }
  // Make it so that I can read params I pass
  const myURL = new URL(request.url)
  const myURLParams = new URLSearchParams(myURL.search)
  // Check if you passed a username or not
  if (myURLParams.has("username")) {
    const username = myURLParams.get("username")
    const url = "https://ws.audioscrobbler.com/2.0/?method=user.getrecenttracks&user=" + username + "&&limit=1&api_key=" + API_KEY + "&format=json"
    const response = await fetch(url, init)
    const results = await gatherResponse(response)
    return new Response(results, init)
  }else{
    return new Response("Please supply a username!")
  }

}

addEventListener("fetch", event => {
  event.respondWith(handleRequest(event.request))
})