/edit Command

bot.onText(/\/edit (.+?) (.+)/, async (msg, match) => {
  const chatId = msg.chat.id;
  const oldRaw = match[1].trim();
  const newRaw = match[2].trim();

  const oldKey = sanitizeAmazonURL(oldRaw);
  const newKey = sanitizeAmazonURL(newRaw);

  if (!priceData[oldKey]) {
    return bot.sendMessage(chatId, "⚠️ No se encontró producto con la URL original. Usa /list", { parse_mode: "Markdown" });
  }

  const loading = await bot.sendMessage(chatId, "⏳ Actualizando producto...");

  try {
    // Scrape new url
    const browser = await chromium.launch({ headless: true, args: ["--no-sandbox"] });
    const ctx = await browser.newContext();
    const page = await ctx.newPage();

    const scraped = await scrapeProduct(page, newKey);
    await browser.close();

    if (scraped.error) {
      return bot.editMessageText("❌ No se pudo obtener información de la nueva URL. Asegúrate de que es válida.", {
        chat_id: chatId,
        message_id: loading.message_id
      });
    }

    const prev = priceData[oldKey];
    const lowest = typeof prev.lowestPrice === "number" ? prev.lowestPrice : prev.price || scraped.price;

    priceData[newKey] = {
      url: newKey,
      title: scraped.title,
      price: scraped.price,
      lowestPrice: Math.min(scraped.price, lowest),
      imageUrl: scraped.imageUrl || prev.imageUrl || null,
      addedDate: prev.addedDate || new Date().toISOString(),
      addedBy: prev.addedBy || chatId,
      lastChecked: new Date().toISOString(),
      history: Array.isArray(prev.history) ? prev.history.slice() : []
    };

    // add initial history point for the new url
    priceData[newKey].history.push({ date: new Date().toISOString(), price: scraped.price });
    if (priceData[newKey].history.length > HISTORY_LIMIT) priceData[newKey].history = priceData[newKey].history.slice(-HISTORY_LIMIT);

    // remove old key
    delete priceData[oldKey];
    saveData();

    await bot.editMessageText(`✅ *Producto actualizado*\n\nAntes: ${escapeMD(prev.title || oldKey)}\nAhora: ${escapeMD(scraped.title)}`, {
      chat_id: chatId,
      message_id: loading.message_id,
      parse_mode: "Markdown"
    });
  } catch (err) {
    console.error("❌ Error en /edit:", err.message);
    await bot.editMessageText("❌ Ocurrió un error al editar el producto. Intenta de nuevo.", {
      chat_id: chatId,
      message_id: loading.message_id
    });
  }
});