improved connection to supabase DB

backend/src/structs/shop.py

@@ -7,10 +7,10 @@ class BasketItem(BaseModel):
     Represents a single item in the user's basket.
 
     Attributes:
-        item_id (str): The unique identifier for the item.
+        item_id (int): The unique identifier for the item.
         quantity (int): The number of units of the item.
     """
-    item_id: str
+    item_id: int
     quantity: int
 
 
@@ -19,12 +19,12 @@ class Item(BaseModel):
     Represents an item available in the shop.
 
     Attributes:
-        item_id (str): The unique identifier for the item.
+        item_id (int): The unique identifier for the item.
         name (str): The name of the item.
         description (str): The description of the item.
         unit_price (float): The unit price of the item.
     """
-    item_id: str
+    item_id: int
     name: str
     description: str
     unit_price: float

backend/src/supabase/supabase.py

@@ -175,46 +175,40 @@ class SupabaseClient:
         Returns an Item pydantic model.
         """
         # First, validate the currency
+        self.validate_currency(currency=currency)
+
         try:
-            ok = self.validate_currency(currency=currency)
+            # Fetch from items table
+            base_item = (
+                self.supabase
+                .table("items")
+                .select("*")
+                .eq("item_id", item_id)
+                .single()
+                .execute()
+            ).data
         except Exception as e:
-            self.logger.error(e)
-            raise Exception from e
+            self.logger.error(f'Failed to fetch item {item_id}: {e}')
+            raise ValueError(f"Failed to fetch item {item_id}: {e}")
 
-        # Fetch from items table
-        item_res = (
-            self.supabase
-            .table("items")
-            .select("*")
-            .eq("id", item_id)
-            .single()
-            .execute()
-        )
-
-        if item_res.data is None:
-            raise ValueError(f"Item {item_id} does not exist.")
-
-        base_item = item_res.data
-
-        # Fetch price for this currency and item_id
-        price_res = (
-            self.supabase
-            .table("item_prices")
-            .select("*")
-            .eq("item_id", item_id)
-            .eq("currency", currency.upper())
-            .single()
-            .execute()
-        )
-
-        if price_res.data is None:
-            raise ValueError(f"Price for item {item_id} in {currency} does not exist.")
-
-        price = price_res.data
+        try: 
+            # Fetch price for this currency and item_id
+            price = (
+                self.supabase
+                .table("item_prices")
+                .select("*")
+                .eq("item_id", item_id)
+                .eq("currency", currency.upper())
+                .single()
+                .execute()
+            ).data
+        except Exception as e:
+            self.logger.error(f'Failed to fetch price for {item_id} in {currency}: {e}')
+            raise ValueError(f"Failed to fetch price for {item_id} in {currency}: {e}")
 
         # Return Item model
         return Item(
-            id=base_item["id"],
+            item_id=base_item["item_id"],
             name=base_item["name"],
             description=base_item["description"],
             unit_price=price["unit_price"],
@@ -223,7 +217,7 @@ class SupabaseClient:
         )
 
 
-    def validate_currency(self, currency: str) -> dict:
+    def validate_currency(self, currency: str) -> bool:
         """
         Validates that a currency exists in the available_currencies table
         and is active.
@@ -237,20 +231,20 @@ class SupabaseClient:
         Raises:
             ValueError: If currency does not exist or is inactive.
         """
+        try: 
+            result = (
+                self.supabase
+                .table("available_currencies")
+                .select("*")
+                .eq("currency", currency.upper())
+                .single()
+                .execute()
+            )
+        except Exception as exc:
+            self.logger.error(f'Unable to validate currency {currency}, most likely not supported yet: {exc}')
+            raise ValueError(f"Could not validate '{currency}', most likely not supported yet: {exc}")
 
-        result = (
-            self.supabase
-            .table("available_currencies")
-            .select("*")
-            .eq("currency", currency.upper())
-            .single()
-            .execute()
-        )
-
-        if result.data is None:
-            raise ValueError(f"Currency '{currency}' is not supported yet.")
-
-        if result.data.get("active") is not True:
+        if result.data['active'] is not True:
             raise ValueError(f"Currency '{currency}' is currently not supported.")
 
-        return True
+        return True