const TIKTOK_SHOP_BASE = 'https://open-api.tiktokglobalshop.com';

async function syncProductToTikTokShop(product: Product) {
  // TikTok Shop API requires HMAC-SHA256 request signing
  const timestamp = Math.floor(Date.now() / 1000).toString();
  const body = {
    title: product.name.substring(0, 255),
    description: product.description.replace(/<[^>]*>/g, '').substring(0, 5000),
    category_id: product.tikTokCategoryId, // find IDs in TikTok Seller Center → Products → Categories
    images: product.images.map(img => ({ url: img.url })),
    skus: product.variants.map(v => ({
      sales_attributes: v.options.map(opt => ({ attribute_name: opt.name, value_name: opt.value })),
      stock_infos: [{ available_stock: v.stockQuantity, warehouse_id: process.env.TIKTOK_WAREHOUSE_ID }],
      seller_sku: v.sku,
      original_price: v.price.toFixed(2),
    })),
  };

  return tiktokShopRequest('/api/products', body);
}

// Handle TikTok Shop order webhooks
// POST /webhooks/tiktok-shop
export async function handleTikTokShopWebhook(req: Request, res: Response) {
  const { type, data } = req.body;

  if (type === 'ORDER_STATUS_CHANGE') {
    // Sync TikTok order to your OMS
    await syncTikTokOrder(data.order_id, data.order_status);
  }

  res.json({ code: 0 }); // TikTok requires this exact response format
}