1.started removal of CDNs.\n 2. Improved modular structure for all parts of project including database.

business_objects/store/store_base.py

@@ -0,0 +1,57 @@
+"""
+Project:    PARTS Website
+Author:     Edward Middleton-Smith
+            Precision And Research Technology Systems Limited
+
+Technology: Business Objects
+Feature:    Base Store Business Object
+
+Description:
+Abstract business object for store objects
+"""
+
+# internal
+# external
+from typing import ClassVar
+
+class Store_Base():
+    ATTR_ID_CURRENCY: ClassVar[str] = 'id-currency'
+    # ATTR_ID_CURRENCY_COST: ClassVar[str] = 'id-currency-cost'
+    ATTR_ID_DELIVERY_REGION: ClassVar[str] = 'id-delivery-region'
+    ATTR_ID_DISCOUNT: ClassVar[str] = 'id-discount'
+    ATTR_ID_IMAGE: ClassVar[str] = 'id-image'
+    ATTR_ID_LOCATION_STORAGE: ClassVar[str] = 'id-location-storage'
+    ATTR_ID_PRODUCT: ClassVar[str] = 'id-product'
+    ATTR_ID_PRODUCT_CATEGORY: ClassVar[str] = 'id-category'
+    ATTR_ID_PRODUCT_PERMUTATION: ClassVar[str] = 'id-permutation'
+    ATTR_ID_PRODUCT_PRICE: ClassVar[str] = 'id-price'
+    ATTR_ID_PRODUCT_VARIATION: ClassVar[str] = 'id-variation'
+    ATTR_ID_PRODUCT_VARIATION_TYPE: ClassVar[str] = 'id_variation_type'
+    ATTR_ID_STOCK_ITEM: ClassVar[str] = 'id-stock-item'
+    FLAG_ACTIVE: ClassVar[str] = 'active'
+
+    def __init_subclass__(cls, **kwargs):
+        super().__init_subclass__(**kwargs)
+        for name, value in vars(Store_Base).items():
+            if getattr(value, "__isabstractmethod__", False):
+                if name not in cls.__dict__:
+                    raise TypeError(f"Can't instantiate class {cls.__name__} "
+                                    f"without implementation of abstract method {name}")
+                subclass_value = cls.__dict__[name]
+                if (isinstance(value, (staticmethod, classmethod)) and 
+                    not isinstance(subclass_value, type(value))):
+                    raise TypeError(f"Abstract {type(value).__name__} {name} in {cls.__name__} "
+                                    f"must be implemented as a {type(value).__name__}")
+
+    def __new__(cls, *args, **kwargs):
+        if cls is Store_Base:
+            raise TypeError("Can't instantiate abstract class Store_Base directly")
+        return super().__new__(cls)
+    
+    def __repr__(self):
+        pass
+    @classmethod
+    def from_json(cls, json):
+        pass
+    def to_json(self):
+        pass