jellyfin-qbittorrent-monitor: fix hysterisis

services/jellyfin/jellyfin-qbittorrent-monitor.py

@@ -61,6 +61,7 @@ class JellyfinQBittorrentMonitor:
         self.streaming_start_delay = streaming_start_delay
         self.streaming_stop_delay = streaming_stop_delay
         self.last_state_change = 0
+        self._last_seen_state = None  # tracks previous poll's streaming_active for flicker detection
 
         # Webhook receiver: allows Jellyfin to push events instead of waiting for the poll
         self.webhook_port = webhook_port
@@ -355,12 +356,24 @@ class JellyfinQBittorrentMonitor:
             pass
 
     def should_change_state(self, new_streaming_state: bool) -> bool:
-        """Apply hysteresis to prevent rapid state changes"""
+        """Apply hysteresis to prevent rapid state changes.
+
+        The delay must be contiguous: if the session flickers (absent→present
+        while a stop-countdown is in progress, or vice versa), the timer resets
+        so brief gaps don't accumulate into a spurious state transition.
+        Routine repeated presence (e.g. webhook PlaybackProgress every second)
+        does NOT reset the timer — only a direction reversal does.
+        """
         now = time.time()
 
         if new_streaming_state == self.last_streaming_state:
+            if self._last_seen_state != self.last_streaming_state:
+                self.last_state_change = now
+            self._last_seen_state = new_streaming_state
             return False
 
+        self._last_seen_state = new_streaming_state
+
         time_since_change = now - self.last_state_change
 
         if new_streaming_state and not self.last_streaming_state: