variants as a single product

controllers/productController.go

@@ -401,6 +401,20 @@ func (ctl *ProductController) GetAllProducts(c *fiber.Ctx) error {
 	// list and the figure beside it cannot disagree.
 	if err == nil && isAppRequest(c) {
 		details = services.InStockOnlyGrouped(details)
+
+		// One product, three sizes — not three products.
+		//
+		// A shop stocking Aachi Baby Fryums in 100g, 500g and 1kg has three
+		// product rows, each with its own price and its own shelf. The shopper
+		// should meet ONE listing and pick the size; the sizes travel with the
+		// parent in `variantoptions`, so nothing becomes unreachable.
+		//
+		// Best-effort, like the stock filter above: if the lookup fails the
+		// shopper sees the three rows they see today, which is worse than the
+		// grouping and much better than an error.
+		if isChild, cErr := ctl.productService.VariantChildIDs(tenantID); cErr == nil {
+			details = services.WithoutVariantChildren(details, isChild)
+		}
 	}
 	if err != nil {
 		return c.JSON(fiber.Map{