Add debug logging to track_client_activity

- Log API token, rustdesk_id, IP, and user agent received
- Log client creation and updates with user agent changes
- Log database commit success
- Add rollback on exception for better error handling

app/api/routes.py

@@ -809,6 +809,7 @@ def track_client_activity(api_token, rustdesk_id=None):
     """Track client activity for online status"""
     try:
         if not api_token or not api_token.is_valid():
+            logger.debug(f"track_client_activity: Invalid API token")
             return
 
         from app.models import ClientActivity
@@ -818,6 +819,8 @@ def track_client_activity(api_token, rustdesk_id=None):
         ip_address = request.headers.get('X-Forwarded-For', request.remote_addr)
         user_agent = request.headers.get('User-Agent')
 
+        logger.info(f"track_client_activity: api_token_id={api_token.id}, rustdesk_id={rustdesk_id}, ip={ip_address}, user_agent='{user_agent}'")
+
         if rustdesk_id:
             # If rustdesk_id is provided, use specific client
             client = ClientActivity.query.filter_by(
@@ -827,9 +830,11 @@ def track_client_activity(api_token, rustdesk_id=None):
 
             if client:
                 # Update existing client
+                old_user_agent = client.user_agent
                 client.last_seen = datetime.utcnow()
                 client.ip_address = ip_address
                 client.user_agent = user_agent
+                logger.info(f"track_client_activity: Updated existing client {client.id}, user_agent changed from '{old_user_agent}' to '{user_agent}'")
             else:
                 # Create new client
                 client = ClientActivity(
@@ -839,6 +844,7 @@ def track_client_activity(api_token, rustdesk_id=None):
                     user_agent=user_agent
                 )
                 db.session.add(client)
+                logger.info(f"track_client_activity: Created new client with rustdesk_id {rustdesk_id}")
         else:
             # If no rustdesk_id provided, update the most recent client for this API token
             client = ClientActivity.query.filter_by(
@@ -847,9 +853,11 @@ def track_client_activity(api_token, rustdesk_id=None):
 
             if client:
                 # Update most recent client
+                old_user_agent = client.user_agent
                 client.last_seen = datetime.utcnow()
                 client.ip_address = ip_address
                 client.user_agent = user_agent
+                logger.info(f"track_client_activity: Updated most recent client {client.id} (rustdesk_id: {client.rustdesk_id}), user_agent changed from '{old_user_agent}' to '{user_agent}'")
             else:
                 # Create new client with unknown rustdesk_id
                 client = ClientActivity(
@@ -859,11 +867,14 @@ def track_client_activity(api_token, rustdesk_id=None):
                     user_agent=user_agent
                 )
                 db.session.add(client)
+                logger.info(f"track_client_activity: Created new client with unknown rustdesk_id")
 
         db.session.commit()
+        logger.info(f"track_client_activity: Database commit successful")
 
     except Exception as e:
         logger.error(f"Failed to track client activity: {str(e)}")
+        db.session.rollback()
 
 @bp.route('/track', methods=['POST'])
 @csrf.exempt