e2e changes

controllers/productController.go

@@ -191,7 +191,14 @@ func (ctl *ProductController) CreateProduct(c *fiber.Ctx) error {
 		})
 	}
 
-	if err := ctl.productService.CreateProduct(product); err != nil {
+	// The created row, not the parsed body.
+	//
+	// This returned the struct it had just parsed off the request, which by
+	// definition carried `productid: 0` — the id is assigned by the database a
+	// moment later and was never read back. Every caller that needed the id
+	// went and looked the product up again by SKU.
+	created, err := ctl.productService.CreateProduct(product)
+	if err != nil {
 		return c.JSON(fiber.Map{
 			"code":    http.StatusInternalServerError,
 			"message": "Failed to create product",
@@ -203,7 +210,7 @@ func (ctl *ProductController) CreateProduct(c *fiber.Ctx) error {
 		"code":    http.StatusCreated,
 		"message": "Product created successfully",
 		"status":  true,
-		"data":    product,
+		"data":    created,
 	})
 }