Colocated logic for content changes

import {defineBlueprint, defineDocumentFunction} from '@sanity/blueprints';

export default defineBlueprint({
  resources: [
    defineDocumentFunction({
      name: "text-to-speech",
      event: {
        on: ["update"],
        filter: "_type == 'event'",
        projection: "{title, content}",
      },
    })
  ]
});

import { textToSpeech } from "./text-to-speech";

export const handler = documentEventHandler(async ({ context, event }) => {
  const audio = await textToSpeech(event.doc.content);

  const client = createClient({
    ...context.clientOptions,
    apiVersion: "2025-05-08",
  });

  await client.assets.upload("file", audio, {
    filename: `${event.doc.title}.mp3`,
    contentType: "audio/mpeg",
  });

  console.log("Audio generated and uploaded successfully");
});