/add Command

bot.onText(/\/add (.+)/, async (msg, match) => {
  const chatId = msg.chat.id;
  const raw = match[1].trim();
  if (!raw.startsWith("http")) return bot.sendMessage(chatId, "❌ URL inválida. Debe iniciar with http(s).");

  const sanitized = sanitizeAmazonURL(raw);
  if (priceData[sanitized]) {
    return bot.sendMessage(chatId, `⚠️ Este producto ya está en seguimiento:\n*${escapeMD(priceData[sanitized].title || sanitized)}*`, { parse_mode: "Markdown" });
  }

  const loading = await bot.sendMessage(chatId, "⏳ Obteniendo información del producto...");

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

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

    if (scraped.error || !scraped.title || !scraped.price) {
      await bot.editMessageText("❌ No se pudo obtener información del producto. Revisa la URL o prueba otra.", {
        chat_id: chatId,
        message_id: loading.message_id
      });
      return;
    }

    priceData[sanitized] = {
      url: sanitized,
      title: scraped.title,
      price: scraped.price,
      lowestPrice: scraped.price,
      imageUrl: scraped.imageUrl || null,
      addedDate: new Date().toISOString(),
      addedBy: chatId,
      lastChecked: new Date().toISOString(),
      history: [{ date: new Date().toISOString(), price: scraped.price }]
    };

    saveData();

    const success = `✅ *Producto agregado exitosamente*\n\n📦 ${escapeMD(scraped.title)}\n💰 Precio actual: $${scraped.price}\n📅 Agregado: ${new Date().toLocaleDateString()}\n\n🔔 Te notificaré cuando baje el precio.`;

    await bot.editMessageText(success, {
      chat_id: chatId,
      message_id: loading.message_id,
      parse_mode: "Markdown",
      reply_markup: {
        inline_keyboard: [
          [{ text: "🛒 Ver en Amazon", url: sanitized }, { text: "📝 Ver todos", callback_data: "list" }]
        ]
      }
    });
  } catch (err) {
    console.error("❌ Error en /add:", err.message);
    await bot.editMessageText("❌ Ocurrió un error agregando el producto. Intenta de nuevo más tarde.", {
      chat_id: chatId,
      message_id: loading.message_id
    });
  }
});