Spotify.NET/SpotifyAPI.Web.Examples/Example.TokenSwap/Server/index.js

const express = require("express");
const bodyParser = require("body-parser");
const axios = require("axios");
const { default: Axios } = require("axios");

const PORT = process.env.PORT || "5543";
const SPOTIFY_CLIENT_SECRET = process.env.SPOTIFY_CLIENT_SECRET;
const SPOTIFY_CLIENT_ID = process.env.SPOTIFY_CLIENT_ID;
if (!SPOTIFY_CLIENT_SECRET || !SPOTIFY_CLIENT_ID) {
  console.log(
    "SPOTIFY_CLIENT_SECRET or SPOTIFY_CLIENT_ID environment variable is not set!"
  );
  process.exit(1);
}

const app = express();
app.use(bodyParser.urlencoded({ extended: true }));

app.post("/swap", async (req, res) => {
  const { code } = req.body;

  const params = new URLSearchParams();
  params.append("grant_type", "authorization_code");
  params.append("code", code);
  params.append("redirect_uri", "http://localhost:5543/callback");
  params.append("client_secret", SPOTIFY_CLIENT_SECRET);
  params.append("client_id", SPOTIFY_CLIENT_ID);

  const { data } = await Axios.post(
    "https://accounts.spotify.com/api/token",
    params
  );

  return res.send(data);
});

app.post("/refresh", async (req, res) => {
  const { refresh_token } = req.body;

  const params = new URLSearchParams();
  params.append("grant_type", "refresh_token");
  params.append("refresh_token", refresh_token);
  params.append("client_secret", SPOTIFY_CLIENT_SECRET);
  params.append("client_id", SPOTIFY_CLIENT_ID);

  const { data } = await Axios.post(
    "https://accounts.spotify.com/api/token",
    params
  );

  return res.send(data);
});

app.listen(PORT, () => {
  console.log(`Server listening on ${PORT} 🚀`);
});