NextJS customId support in /api/uploadthing route

// FileRouter for your app, can contain multiple FileRoutes
export const uploadRouter = {
  // Define as many FileRoutes as you like, each with a unique routeSlug


  // Video Uploader
  videoUploader: f({
    video: {
      maxFileSize: "32MB",
      maxFileCount: 1,
    },
    
  })
  .input(z.object({ customId: z.string() }))
  .middleware(async ({ req, input }) => {
    // This code runs on your server before upload
    const user = await auth(req);

    // If you throw, the user will not be able to upload
    if (!user) throw new UploadThingError("Unauthorized");

    // Whatever is returned here is accessible in onUploadComplete as `metadata`
    return { userId: user.id, customId: input.customId };
  })
  .onUploadComplete(async ({ metadata, file }) => {
    // This code RUNS ON YOUR SERVER after upload
    console.log("Upload complete for userId:", metadata.userId);

      console.log("file url (ufsUrl):", file.ufsUrl);
      console.log("customId:", metadata.customId);

      return {
        uploadedBy: metadata.userId,
        customId: metadata.customId,
        fileUrl: file.ufsUrl,
      };
    })
    ,
} satisfies FileRouter;

export type UploadRouter = typeof uploadRouter;