exportar_incricoes_youtube.js

(async function exportYoutubeSubscriptions() {
  const delay = ms => new Promise(resolve => setTimeout(resolve, ms));

  async function autoScroll() {
    const distance = 1000;
    let lastHeight = 0;
    while (true) {
      window.scrollBy(0, distance);
      await delay(800);
      const { scrollTop, scrollHeight, clientHeight } = document.documentElement;
      if (scrollTop + clientHeight >= scrollHeight - 5 || scrollTop === lastHeight) break;
      lastHeight = scrollTop;
    }
    console.log("✅ Scroll completo");
  }

  await autoScroll();

  const elements = document.querySelectorAll('ytd-channel-renderer');
  console.log(`🔍 Renderers encontrados: ${elements.length}`);

  const channels = Array.from(elements).map(el => {
    const nameEl = el.querySelector('yt-formatted-string#text');
    const anchorEl = el.querySelector('a[href^="/@"], a[href^="/channel/"]');

    const name = nameEl?.textContent.trim();
    const href = anchorEl?.getAttribute('href');
    const url = href ? `https://www.youtube.com${href}` : null;

    return name && url ? { name, url } : null;
  }).filter(Boolean);

  console.log('📦 Canais extraídos:', channels.length);
  console.table(channels);

  if (channels.length === 0) {
    console.warn("⚠️ Nenhum canal extraído. A estrutura da página pode ter mudado.");
    return;
  }

  const blob = new Blob([JSON.stringify(channels, null, 2)], { type: 'application/json' });
  const urlBlob = URL.createObjectURL(blob);
  const a = document.createElement('a');
  a.href = urlBlob;
  a.download = 'youtube_subscriptions.json';
  a.click();
})();