Exportar una lista de deseos de Amazon a Excel (CSV)

// Responsive Muse · Amazon Wishlist Exporter · v1.1 · 2026-10-22
// Exports the Amazon list you have open (wishlist, shopping list, idea list) to CSV or TXT:
// title, price, ASIN, link, date added, your comment, quantity wanted and priority.
// Works on any Amazon store (.com, .co.uk, .de, .es, .ca…). Runs only on amazon.*/hz/wishlist.
// The script makes no network requests of its own: Amazon loads the rest of the list as it
// scrolls. It never reads cookies, passwords or tokens.
(async () => {
  const TOOL = 'Exportar lista de Amazon';
  const FORMAT = 'csv';        // 'csv' (Excel, Sheets) or 'txt' (one product link per line)

  if (!/^(www\.|smile\.)?amazon\.[a-z.]+$/.test(location.hostname) || !location.pathname.startsWith('/hz/wishlist/')) {
    alert('Abre primero una de tus listas: Cuenta y listas > Tus listas\n(por ejemplo amazon.es/hz/wishlist/ls)');
    return;
  }
  // A small box on the page shows progress and asks before changing anything,
  // so you never need to read or edit the console.
  const many = (n, word) => `${n} ${n === 1 ? word : ({ canal: 'canales', 'canción': 'canciones', 'publicación': 'publicaciones', 'elemento guardado': 'elementos guardados' })[word] || word + 's'}`;   // 1 vídeo, 2 vídeos
  const panel = (() => {
    const box = document.createElement('div');
    box.style.cssText = 'position:fixed;right:16px;bottom:16px;z-index:2147483647;width:340px;max-width:calc(100vw - 32px);' +
      'background:#111318;color:#e6e8ee;font:14px/1.5 system-ui,sans-serif;border-radius:12px;padding:16px;' +
      'box-shadow:0 8px 30px rgba(0,0,0,.4);text-align:left';
    const head = document.createElement('strong');
    head.textContent = TOOL;
    const msg = document.createElement('p');
    msg.style.cssText = 'margin:8px 0 12px;white-space:pre-line';
    const row = document.createElement('div');
    row.style.cssText = 'display:flex;flex-wrap:wrap;gap:8px;justify-content:flex-end';
    box.append(head, msg, row);
    document.body.append(box);
    const button = (label, primary, onClick) => {
      const b = document.createElement('button');
      b.textContent = label;
      b.style.cssText = 'font:600 14px system-ui,sans-serif;padding:8px 14px;border-radius:8px;cursor:pointer;' +
        (primary ? 'background:#0f766e;color:#fff;border:1px solid #0f766e' : 'background:none;color:#e6e8ee;border:1px solid #3a3f4b');
      b.onclick = onClick;
      row.append(b);
    };
    return {
      text(t) { msg.textContent = t; },
      ask(t, yes) {
        msg.textContent = t;
        row.replaceChildren();
        return new Promise(r => {
          button('Cancelar', false, () => { row.replaceChildren(); r(false); });
          button(yes, true, () => { row.replaceChildren(); r(true); });
        });
      },
      stoppable(onStop) { row.replaceChildren(); button('Parar', false, onStop); },
      actions(t, list) {
        msg.textContent = t;
        row.replaceChildren();
        list.forEach(([label, primary, run]) => button(label, primary, run));
      },
      finish(t) { this.actions(t, [['Cerrar', true, () => box.remove()]]); },
      close() { box.remove(); },
    };
  })();
  // Offer the result as a downloaded file or as clipboard text (a real click, so it always works)
  const deliver = (summary, body, file) => {
    const save = () => {
      const a = document.createElement('a');
      a.href = URL.createObjectURL(new Blob([/\.csv$/.test(file) ? '\ufeff' + body : body], { type: 'text/plain;charset=utf-8' }));
      a.download = file;
      a.click();
      setTimeout(() => URL.revokeObjectURL(a.href), 5000);
      panel.text(`${summary}\nGuardado como ${file} (mira tu carpeta de Descargas).`);
    };
    const copy = () => navigator.clipboard.writeText(body)
      .then(() => panel.text(`${summary}\nCopiado. Pégalo en una hoja de cálculo o en una nota.`))
      .catch(() => panel.text(`${summary}\nEl navegador ha bloqueado el portapapeles: usa Descargar.`));
    panel.actions(summary, [['Cerrar', false, () => panel.close()], ['Copiar', false, copy], ['Descargar', true, save]]);
  };
  const sleep = ms => new Promise(r => setTimeout(r, ms));
  const rows = () => [...document.querySelectorAll('li[data-itemid]')];

  // 1. Scroll to the end until no new items appear three times in a row
  let last = -1, idle = 0;
  while (idle < 3) {
    window.scrollTo(0, document.documentElement.scrollHeight);
    await sleep(1500);
    const n = rows().length;
    idle = n === last ? idle + 1 : 0;
    last = n;
    panel.text(`Cargando tu lista… ${n} elementos`);
  }

  // 2. Read every item
  const items = rows().map(li => {
    const text = sel => (li.querySelector(sel)?.textContent || '').replace(/\s+/g, ' ').trim();
    const link = li.querySelector('[id^="itemName_"]');
    const asin = ((link?.getAttribute('href') || '').match(/\/dp\/([A-Z0-9]{10})/) || [])[1] || '';
    const price = parseFloat(li.getAttribute('data-price'));
    return {
      title: (link?.getAttribute('title') || link?.textContent || '').trim(),
      price: isFinite(price) ? price : '',               // empty = currently unavailable
      priceShown: text('.a-price .a-offscreen'),
      by: text('[id^="item-byline-"]').replace(/^(by|de|von|par|di)\s+/i, ''),
      added: text('[id^="itemAddedDate_"]'),
      comment: text('[id^="itemComment_"]'),
      wanted: text('[id^="itemRequested_"]'),
      priority: text('[id^="itemPriority_"]'),
      asin,
      url: asin ? `${location.origin}/dp/${asin}` : '',
    };
  });
  if (!items.length) {
    panel.finish('No se han encontrado productos. Puede que Amazon haya cambiado su diseño: avísanos en responsive-muse.com.');
    return 0;
  }

  // 3. Build the file and offer it
  const cell = v => '"' + String(v).replace(/"/g, '""') + '"';
  const body = FORMAT === 'txt'
    ? items.map(i => i.url).filter(Boolean).join('\n')
    : ['Título,Precio,Precio mostrado,De,Fecha añadido,Comentario,Deseados,Prioridad,ASIN,URL',
       ...items.map(i => [i.title, i.price, i.priceShown, i.by, i.added, i.comment, i.wanted, i.priority, i.asin, i.url]
         .map(cell).join(','))].join('\n');
  const name = (document.querySelector('#profile-list-name')?.textContent.trim() || 'amazon-list')
    .replace(/[\\/:*?"<>|]+/g, '_');
  deliver(`Listo: ${many(items.length, 'elemento')}.`, body, `${name}.${FORMAT}`);
  return items.length;
})();