The pull request adds error handling for fetching lyrics from the ovh API. This is a good improvement. However, the error handling could be more robust and informative.

1. Generic Error Handling: The catch (err) block only logs the error. It should also include more context, such as the specific request URL that failed and potentially a more user-friendly error message to be returned to the client.

javascript
   } catch (err) {
     console.error("Error fetching lyrics from OVH API for URL:", url, err); 
     lyrics = "Failed to retrieve lyrics. Please try again later."; //More user-friendly message
   }
   

2. Specific Error Handling (Optional): Consider handling specific HTTP error codes (e.g., 404 Not Found) differently. A 404 might indicate that the song/artist is not found in the OVH API, allowing for a more precise message to the user.

3. Avoid Unnecessary replaceAll Calls: The multiple replaceAll calls can be chained together for efficiency:

javascript
   lyrics = (res.lyrics || "").replaceAll(/\\|\n\n|"/g, "");
   

This single line replaces all occurrences of \, \n\n, and ". The /g flag ensures all occurrences are replaced.

4. Consider using a dedicated logging library: Instead of using console.log and console.error, consider using a structured logging library like pino or winston. This will allow for easier monitoring and debugging in production.

The improved getSong function incorporating these suggestions would look like this:

javascript
  getSong: publicProcedure
    .input(z.object({ api_path: z.string() }))
    .mutation(async ({ input }) => {
      // ... (rest of the code remains the same)

        if(lyrics === "" && data?.response?.song?.primary_artist?.name && data?.response?.song?.title) { 
          try{
            const url = `${ovhApiUrl}/v1/${data?.response?.song.primary_artist.name}/${data?.response?.song.title}`;
            const response = await fetch(url);
            if (!response.ok) {
              console.error(`OVH API request failed with status ${response.status} for URL: ${url}`);
              lyrics = `Failed to retrieve lyrics (HTTP ${response.status}). Please try again later.`;
              return;
            }
            const res = await response.json() as { lyrics: string }; 
            lyrics = (res.lyrics || "").replaceAll(/\\|\n\n|"/g, "");
          } catch (err) {
            console.error("Error fetching lyrics from OVH API for URL:", url, err); 
            lyrics = "Failed to retrieve lyrics. Please try again later."; 
          }
        } else {
          lyrics = "Lyrics not found";
        }
        // ... (rest of the code remains the same)

    }),