old_code.txt

// Route to get a single song recommendation without default values
app.get('/recommendations', getAccessToken, async (req, res) => {
  // Read parameters from request query
  const { seed_genres, target_valence, target_danceability } = req.query;

  // Validate that required parameters are provided
  if (!seed_genres || !target_valence || !target_danceability) {
    return res.status(400).json({
      error: 'Missing required parameters: seed_genres, target_valence, target_danceability',
    });
  }

  const genres = typeof seed_genres === 'string' ? seed_genres.split(',') : seed_genres;

  try {
    // Fetch a single song recommendation
    const response = await spotifyApi.getRecommendations({
      seed_genres: genres, // Pass the array of genres
      target_valence: parseFloat(target_valence), // Parse valence to a number
      target_danceability: parseFloat(target_danceability), // Parse danceability to a number
      limit: 1, // Limit to 1 recommendation
    });

    console.log(response);

    // Send the recommended track as JSON response
    // we are grabbing the smallest image, but could grab a bigger one, biggest being at images[0]
    const recommendations = response.body.tracks.map((track) => ({
      name: track.name,
      artist: track.artists[0].name,
      uri: track.uri,
      artwork: track.album.images[track.album.images.length - 1]?.url, // Gets the smallest image URL
    }));

    res.json({ recommendations });
  } catch (err) {
    console.error('Error fetching recommendations:', err);
    res.status(500).json({ error: 'Failed to fetch song recommendations' });
  }
});