Fix issues 2

services/training/app/services/training_orchestrator.py

@@ -177,24 +177,29 @@ class TrainingDataOrchestrator:
             raise ValueError(f"Failed to prepare training data: {str(e)}")
     
     def _extract_sales_date_range(self, sales_data: List[Dict[str, Any]]) -> DateRange:
-        """Extract date range from sales data with timezone handling"""
+        """Extract date range from sales data with timezone handling and strict date format."""
         if not sales_data:
             raise ValueError("No sales data provided")
         
         dates = []
+        
         for record in sales_data:
             date_value = record.get('date')
-            if date_value:
-                # ✅ FIX: Ensure timezone-aware datetime
-                if isinstance(date_value, str):
-                    dt = pd.to_datetime(date_value)
-                    if dt.tz is None:
-                        dt = dt.replace(tzinfo=timezone.utc)
-                    dates.append(dt.to_pydatetime())
-                elif isinstance(date_value, datetime):
-                    if date_value.tzinfo is None:
-                        date_value = date_value.replace(tzinfo=timezone.utc)
-                    dates.append(date_value)
+            if not date_value:
+                continue  # Skip records with missing date
+            
+            if isinstance(date_value, str):
+                # Parse string with explicit format
+                dt = pd.to_datetime(date_value, format='mixed', errors='raise')
+                if dt.tz is None:
+                    dt = dt.tz_localize('UTC')  # Assign UTC timezone if none
+                dates.append(dt.to_pydatetime())
+            elif isinstance(date_value, datetime):
+                if date_value.tzinfo is None:
+                    date_value = date_value.replace(tzinfo=timezone.utc)
+                dates.append(date_value)
+            else:
+                continue
         
         if not dates:
             raise ValueError("No valid dates found in sales data")