fix: article_add API method validation and types (#93)

Co-authored-by: Sven Eberth <[email protected]>

Author: KadirBalku

src/viur/shop/modules/api.py

@@ -56,7 +56,7 @@ def article_add(
             article_key, "article_key")
         parent_cart_key = self._normalize_external_key(
             parent_cart_key, "parent_cart_key")
-        assert isinstance(quantity, QuantityMode)
+        assert isinstance(quantity_mode, QuantityMode)
         return JsonResponse(self.shop.cart.add_or_update_article(
             article_key=article_key,
             parent_cart_key=parent_cart_key,

src/viur/shop/modules/cart.py

@@ -546,22 +546,22 @@ def cart_remove(
 
     def additional_add_or_update_article(
         self,
-        skel: SkeletonInstance_T[CartNodeSkel],
+        skel: SkeletonInstance_T[CartItemSkel],
         /,
         **kwargs,
-    ) -> SkeletonInstance_T[CartNodeSkel]:
+    ) -> SkeletonInstance_T[CartItemSkel]:
         """
         Hook method called by :meth:`add_or_update_article` before the skeleton is saved.
 
         This method can be overridden in a subclass to implement additional API fields or
         make further modifications to the cart skeleton (`skel`).
         By default, it raises an exception if unexpected arguments
-        (``kwargs``) are provided and returns the unchanged `skel`` object.
+        (``kwargs``) are provided and returns the unchanged `skel` object.
 
-        :param skel: The current instance of the cart skeleton.
+        :param skel: The current instance of the cart item skeleton.
         :param kwargs: Additional optional arguments for extended implementations.
         :raises TooManyArgumentsException: If unexpected arguments are passed in ``kwargs``.
-        :return: The (potentially modified) cart skeleton.
+        :return: The (potentially modified) cart item skeleton.
         """
         if kwargs:
             raise e.TooManyArgumentsException(f"{self}.add_or_update_article", *kwargs.keys())
@@ -579,7 +579,7 @@ def additional_cart_add(
         This method can be overridden in a subclass to implement additional API fields or
         make further modifications to the cart skeleton (`skel`).
         By default, it raises an exception if unexpected arguments
-        (``kwargs``) are provided and returns the unchanged `skel`` object.
+        (``kwargs``) are provided and returns the unchanged `skel` object.
 
         :param skel: The current instance of the cart skeleton.
         :param kwargs: Additional optional arguments for extended implementations.
@@ -602,7 +602,7 @@ def additional_cart_update(
         This method can be overridden in a subclass to implement additional API fields or
         make further modifications to the cart skeleton (`skel`).
         By default, it raises an exception if unexpected arguments
-        (``kwargs``) are provided and returns the unchanged `skel`` object.
+        (``kwargs``) are provided and returns the unchanged `skel` object.
 
         :param skel: The current instance of the cart skeleton.
         :param kwargs: Additional optional arguments for extended implementations.

src/viur/shop/modules/order.py

@@ -520,7 +520,7 @@ def additional_order_add(
         This method can be overridden in a subclass to implement additional API fields or
         make further modifications to the order skeleton (`skel`).
         By default, it raises an exception if unexpected arguments
-        (``kwargs``) are provided and returns the unchanged `skel`` object.
+        (``kwargs``) are provided and returns the unchanged `skel` object.
 
         :param skel: The current instance of the order skeleton.
         :param kwargs: Additional optional arguments for extended implementations.
@@ -543,7 +543,7 @@ def additional_order_update(
         This method can be overridden in a subclass to implement additional API fields or
         make further modifications to the order skeleton (`skel`).
         By default, it raises an exception if unexpected arguments
-        (``kwargs``) are provided and returns the unchanged `skel`` object.
+        (``kwargs``) are provided and returns the unchanged `skel` object.
 
         :param skel: The current instance of the order skeleton.
         :param kwargs: Additional optional arguments for extended implementations.