fix datatypes, erd

lib/datatypes.py

@@ -3,7 +3,7 @@ from dataclasses import dataclass, asdict
 
 @dataclass
 class Customer:
-    customer_id: int
+    id: str
     first_name: str
     last_name: str
     street: str
@@ -20,8 +20,8 @@ class Customer:
 
 @dataclass
 class Order:
-    order_id: int
-    customer: Customer
+    id: str
+    customer: Customer.id
     invoice_amount: int
     order_date: str  # Assuming timestamp as a string for simplicity
 
@@ -31,7 +31,7 @@ class Order:
 
 @dataclass
 class Ingredient:
-    ingredient_id: int
+    id: str
     designation: str
     stock: int
     net_price: int
@@ -46,7 +46,7 @@ class Ingredient:
 
 @dataclass
 class Supplier:
-    supplier_id: int
+    id: str
     city: str
     street: str
     email: str
@@ -60,7 +60,7 @@ class Supplier:
 
 @dataclass
 class Recipe:
-    recipe_id: int
+    id: str
     preperation_time: int
     name: str
     description: str
@@ -70,15 +70,15 @@ class Recipe:
         return {k: str(v) for k, v in asdict(self).items()}
 
 @dataclass
-class SupplierContainsIngredients:
-    recipe: Recipe
-    ingredient: Ingredient
+class RecipeContainsIngredients:
+    recipe: Recipe.id
+    ingredient: Ingredient.id
     amount: int
 
 @dataclass
 class SupplierContainsIngredients:
-    supplier: Supplier
-    ingredient: Ingredient
+    supplier: Supplier.id
+    ingredient: Ingredient.id
     delivery_cost: int
     delivery_time: int
 
@@ -88,8 +88,8 @@ class SupplierContainsIngredients:
 
 @dataclass
 class OrderContainsIngredients:
-    order: Order
-    ingredient: Ingredient
+    order: Order.id
+    ingredient: Ingredient.id
     quantity: int
 
     def dict(self):