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// Hide free lines from the drawer. The cart total is unchanged.
window.aftersell.cart.hooks.registerLineTransform((line) => {
  if (line.finalLinePrice === 0) {
    line.setHidden(true);
  }
});

window.aftersell.cart.hooks.registerLineTransform((line) => {
  // An app-injected line, tagged with a private property.
  if (line.properties?._bundle_child) {
    line.setHidden(true);
  }

  // A specific SKU that shouldn't be shopper-managed.
  if (line.variantId === HIDDEN_VARIANT_ID) {
    line.setHidden(true);
  }

  // Gift cards issued by a loyalty app.
  if (line.isGiftCard && line.finalLinePrice === 0) {
    line.setHidden(true);
  }
});

window.aftersell.cart.hooks.registerLineTransform((line) => {
  // Flag discounted lines.
  if (line.finalLinePrice < line.originalLinePrice) {
    line.setTitle(`${line.title} (On sale)`);
  }

  // Make the subscription cadence read naturally.
  if (line.sellingPlan) {
    line.setVariantTitle(`Delivered ${line.sellingPlan.name.toLowerCase()}`);
  }

  // Drop a meaningless variant label.
  if (line.variantTitle === 'Default Title') {
    line.setVariantTitle(null);
  }
});

// Subscriptions first, then everything else.
window.aftersell.cart.hooks.registerLineComparator((lineA, lineB) => {
  return (lineB.sellingPlan ? 1 : 0) - (lineA.sellingPlan ? 1 : 0);
});

// Push free gifts and add-ons to the bottom.
window.aftersell.cart.hooks.registerLineComparator((lineA, lineB) => {
  return (lineA.finalLinePrice === 0 ? 1 : 0) - (lineB.finalLinePrice === 0 ? 1 : 0);
});

window.aftersell.cart.events.on('cart_updated', (state) => {
  const root = window.aftersell.cart.shadowRoot;
  if (!root) return;

  const rewards = root.querySelector('.cart-external-rewards');
  if (!rewards) return;

  const hasExcluded = state.items.some((line) => EXCLUDED_PRODUCT_IDS.includes(line.productId));
  rewards.style.display = hasExcluded ? 'none' : '';
});