muse/src/services/third-party.ts

import {inject, injectable} from 'inversify';
import SpotifyWebApi from 'spotify-web-api-node';
import Youtube from 'youtube.ts/dist/youtube.js';
import {TYPES} from '../types.js';
import Config from './config.js';

@injectable()
export default class ThirdParty {
  readonly youtube: Youtube;
  readonly spotify: SpotifyWebApi;

  private spotifyTokenTimerId?: NodeJS.Timeout;

  constructor(@inject(TYPES.Config) config: Config) {
    // Library is transpiled incorrectly
    this.youtube = new ((Youtube as any).default)(config.YOUTUBE_API_KEY);
    this.spotify = new SpotifyWebApi({
      clientId: config.SPOTIFY_CLIENT_ID,
      clientSecret: config.SPOTIFY_CLIENT_SECRET
    });

    void this.refreshSpotifyToken();
  }

  cleanup() {
    if (this.spotifyTokenTimerId) {
      clearTimeout(this.spotifyTokenTimerId);
    }
  }

  private async refreshSpotifyToken() {
    const auth = await this.spotify.clientCredentialsGrant();
    this.spotify.setAccessToken(auth.body.access_token);

    this.spotifyTokenTimerId = setTimeout(this.refreshSpotifyToken, (auth.body.expires_in / 2) * 1000);
  }
}