ChatGPT TTS Grabber

Automatically downloads ChatGPT's TTS audio with filename based on chat title.
Bezoek de website van de maker, stel een vraag, plaats een beoordeling of rapporteer dit script.
Regels afbreken
// ==UserScript==
// @name         ChatGPT TTS Grabber
// @namespace    https://github.com/dudebot/greasyfork-scripts/tree/main/ChatGPT
// @version      1.2.0
// @description  Automatically downloads ChatGPT's TTS audio with filename based on chat title.
// @author       dudebot
// @license      MIT
// @supportURL   https://github.com/dudebot/greasyfork-scripts/issues
// @match        https://chat.openai.com/*
// @match        https://chatgpt.com/*
// @grant        none
// ==/UserScript==

(() => {
  const OrigMS = window.MediaSource;
  let latestTitleSlug = 'chatgpt';

  function updateTitleSlugFromBody(bodyText) {
    try {
      const json = JSON.parse(bodyText);
      const title = json && json.context && json.context.page && json.context.page.title;
      if (typeof title === 'string' && title.trim()) {
        let slug = title.trim().replace(/\s+/g, '_');
        slug = slug.replace(/[^\w\-]+/g, '');
        if (!slug) slug = 'chat';
        latestTitleSlug = slug;
      }
    } catch (e) {
      // ignore parse errors
    }
  }

  // hook fetch so we can grab context.page.title from /ces/v1/t
  const origFetch = window.fetch;
  window.fetch = function(input, init) {
    let url = '';
    if (typeof input === 'string') {
      url = input;
    } else if (input instanceof Request) {
      url = input.url;
    }

    if (url.includes('/ces/v1/t')) {
      // handle request object case
      if (input instanceof Request) {
        try {
          input.clone().text().then(updateTitleSlugFromBody).catch(() => {});
        } catch (e) {
          // ignore
        }
      } else if (init && typeof init.body === 'string') {
        updateTitleSlugFromBody(init.body);
      }
    }

    return origFetch.apply(this, arguments);
  };

  function getFilename(mime) {
    const ext = (mime.split('/')[1] || 'webm').split(';')[0];
    const safeSlug = latestTitleSlug || 'chatgpt';
    return `${safeSlug}-${Date.now()}.${ext}`;
  }

  function doDownload(url, mime) {
    const filename = getFilename(mime);
    const a = document.createElement('a');
    a.href = url;
    a.download = filename;
    document.body.appendChild(a);
    a.click();
    a.remove();
    URL.revokeObjectURL(url);
  }

  window.MediaSource = function() {
    const ms = new OrigMS();
    const origAdd = ms.addSourceBuffer.bind(ms);

    ms.addSourceBuffer = mime => {
      const sb = origAdd(mime);

      if (mime.startsWith('audio/')) {
        const chunks = [];
        const origAppend = sb.appendBuffer.bind(sb);

        sb.appendBuffer = buf => {
          chunks.push(buf.slice(0));
          origAppend(buf);
        };

        // when the player calls endOfStream:
        ms.addEventListener('sourceended', () => {
          const blob = new Blob(chunks, { type: mime });
          const url = URL.createObjectURL(blob);
          doDownload(url, mime);
        });
      }

      return sb;
    };

    return ms;
  };

  window.MediaSource.prototype = OrigMS.prototype;
  MediaSource.isTypeSupported = OrigMS.isTypeSupported;
})();