Update history_manager.py

history_manager.py

@@ -70,11 +70,52 @@ class UserHistoryManager:
     #         return False
 
     def save_history(self, user_preferences: dict = None, results: list = None, search_type: str = "criteria", description: str = None) -> bool:
-        history_entry = {
-            "timestamp": taipei_time.strftime("%Y-%m-%d %H:%M:%S"),
-            "search_type": search_type,
-            "results": results
-        }
+        """
+        Save search history with proper timestamp handling.
+        
+        Args:
+            user_preferences: User's search preferences
+            results: List of breed recommendations
+            search_type: Type of search performed
+            description: Search description if applicable
+        
+        Returns:
+            bool: Success status of save operation
+        """
+        try:
+            # Initialize timezone and current time
+            taipei_tz = pytz.timezone('Asia/Taipei')
+            current_time = datetime.now(taipei_tz)
+            
+            # Create history entry with timestamp
+            history_entry = {
+                "timestamp": current_time.strftime("%Y-%m-%d %H:%M:%S"),
+                "search_type": search_type,
+                "results": results
+            }
+            
+            # Add preferences to history entry if provided
+            if user_preferences:
+                history_entry["preferences"] = user_preferences
+    
+            # Read existing history
+            with open(self.history_file, 'r', encoding='utf-8') as f:
+                history = json.load(f)
+    
+            # Add new entry and maintain history limit
+            history.append(history_entry)
+            if len(history) > 20:  # Keep last 20 entries
+                history = history[-20:]
+    
+            # Save updated history
+            with open(self.history_file, 'w', encoding='utf-8') as f:
+                json.dump(history, f, ensure_ascii=False, indent=2)
+    
+            return True
+    
+        except Exception as e:
+            print(f"Error saving history: {str(e)}")
+            return False
 
     def get_history(self) -> list:
         """獲取搜尋歷史"""