Improve the frontend 3

shared/clients/inventory_client.py

@@ -504,6 +504,112 @@ class InventoryServiceClient(BaseServiceClient):
                        error=str(e), tenant_id=tenant_id)
             return None
 
+    # ================================================================
+    # BATCH OPERATIONS (NEW - for Orchestrator optimization)
+    # ================================================================
+
+    async def get_ingredients_batch(
+        self,
+        tenant_id: str,
+        ingredient_ids: List[UUID]
+    ) -> Dict[str, Any]:
+        """
+        Fetch multiple ingredients in a single request.
+
+        This method reduces N API calls to 1, significantly improving
+        performance when fetching data for multiple ingredients.
+
+        Args:
+            tenant_id: Tenant ID
+            ingredient_ids: List of ingredient IDs to fetch
+
+        Returns:
+            Dict with 'ingredients', 'found_count', and 'missing_ids'
+        """
+        try:
+            if not ingredient_ids:
+                return {
+                    'ingredients': [],
+                    'found_count': 0,
+                    'missing_ids': []
+                }
+
+            # Convert UUIDs to strings for JSON serialization
+            ids_str = [str(id) for id in ingredient_ids]
+
+            result = await self.post(
+                "inventory/operations/ingredients/batch",
+                data={"ingredient_ids": ids_str},
+                tenant_id=tenant_id
+            )
+
+            if result:
+                logger.info(
+                    "Retrieved ingredients in batch",
+                    requested=len(ingredient_ids),
+                    found=result.get('found_count', 0),
+                    tenant_id=tenant_id
+                )
+
+            return result or {'ingredients': [], 'found_count': 0, 'missing_ids': ids_str}
+
+        except Exception as e:
+            logger.error(
+                "Error fetching ingredients in batch",
+                error=str(e),
+                count=len(ingredient_ids),
+                tenant_id=tenant_id
+            )
+            return {'ingredients': [], 'found_count': 0, 'missing_ids': [str(id) for id in ingredient_ids]}
+
+    async def get_stock_levels_batch(
+        self,
+        tenant_id: str,
+        ingredient_ids: List[UUID]
+    ) -> Dict[str, float]:
+        """
+        Fetch stock levels for multiple ingredients in a single request.
+
+        Args:
+            tenant_id: Tenant ID
+            ingredient_ids: List of ingredient IDs
+
+        Returns:
+            Dict mapping ingredient_id (str) to stock level (float)
+        """
+        try:
+            if not ingredient_ids:
+                return {}
+
+            # Convert UUIDs to strings for JSON serialization
+            ids_str = [str(id) for id in ingredient_ids]
+
+            result = await self.post(
+                "inventory/operations/stock-levels/batch",
+                data={"ingredient_ids": ids_str},
+                tenant_id=tenant_id
+            )
+
+            stock_levels = result.get('stock_levels', {}) if result else {}
+
+            logger.info(
+                "Retrieved stock levels in batch",
+                requested=len(ingredient_ids),
+                found=len(stock_levels),
+                tenant_id=tenant_id
+            )
+
+            return stock_levels
+
+        except Exception as e:
+            logger.error(
+                "Error fetching stock levels in batch",
+                error=str(e),
+                count=len(ingredient_ids),
+                tenant_id=tenant_id
+            )
+            return {}
+
     # ================================================================
     # UTILITY METHODS
     # ================================================================