Improve the inventory page 3

services/inventory/app/services/inventory_service.py

@@ -20,6 +20,7 @@ from app.schemas.inventory import (
 )
 from app.core.database import get_db_transaction
 from shared.database.exceptions import DatabaseError
+from shared.utils.batch_generator import BatchNumberGenerator, create_fallback_batch_number
 
 logger = structlog.get_logger()
 
@@ -237,7 +238,21 @@ class InventoryService:
                 ingredient = await ingredient_repo.get_by_id(UUID(stock_data.ingredient_id))
                 if not ingredient or ingredient.tenant_id != tenant_id:
                     raise ValueError("Ingredient not found")
-                
+
+                # Generate batch number if not provided
+                if not stock_data.batch_number:
+                    try:
+                        batch_generator = BatchNumberGenerator(stock_repo)
+                        stock_data.batch_number = await batch_generator.generate_batch_number(
+                            tenant_id=str(tenant_id),
+                            prefix="INV"
+                        )
+                        logger.info("Generated batch number", batch_number=stock_data.batch_number)
+                    except Exception as e:
+                        # Fallback to a simple batch number if generation fails
+                        stock_data.batch_number = create_fallback_batch_number("INV")
+                        logger.warning("Used fallback batch number", batch_number=stock_data.batch_number, error=str(e))
+
                 # Create stock entry
                 stock = await stock_repo.create_stock_entry(stock_data, tenant_id)