Post a new song to our collaborative spotify playlist

server.js

app.post('/song', function(req, res) {
  refresh(process.env.REFRESH_TOKEN, process.env.CLIENT_ID, process.env.CLIENT_SECRET, function(err, res, body) {
    if (err) return err;
    request.post({
      url: 'https://api.spotify.com/v1/playlists/your-playlist-id/tracks?uris=spotify%3Atrack%3A' +
        getIDfromUrl(req.body.submiturl),
      headers: {
        'Authorization': 'Bearer ' + body.access_token,
        'Host': 'api.spotify.com',
        'Accept': 'application/json',
        'Content-Type': 'application/json'
      },
      json: true
    });
  });

  console.log("added " + req.body.submiturl + " to the playlist");
  res.redirect("/added");
})