manual sync by default: sync now button, auto-sync toggle

tinyweb_forum/sync.py

@@ -55,13 +55,41 @@ class ForumSync:
         if self.fdb.get_setting("forum_auto_discover", "1") == "1":
             self._enable_announce_handler()
         self._running = True
-        self._thread = threading.Thread(target=self._sync_loop, daemon=True)
-        self._thread.start()
+        if self.fdb.get_setting("forum_auto_sync", "0") == "1":
+            self._start_sync_loop()
 
     def stop(self):
         self._running = False
         self._disable_announce_handler()
 
+    def set_auto_sync(self, enabled):
+        self.fdb.set_setting("forum_auto_sync", "1" if enabled else "0")
+        if enabled:
+            self._start_sync_loop()
+        else:
+            pass  # current cycle finishes, no new one starts
+
+    def sync_now(self):
+        """Run one sync cycle immediately. Returns count of peers synced."""
+        instances = self.fdb.get_synced_instances()
+        random.shuffle(instances)
+        count = 0
+        for inst in instances[:GOSSIP_FANOUT]:
+            if not self._running:
+                break
+            try:
+                self._sync_with(inst["instance_hash"])
+                count += 1
+            except Exception as e:
+                print(f"[forum] sync error with {inst['instance_hash'][:16]}: {e}")
+        return count
+
+    def _start_sync_loop(self):
+        if self._thread and self._thread.is_alive():
+            return
+        self._thread = threading.Thread(target=self._sync_loop, daemon=True)
+        self._thread.start()
+
     def set_auto_discover(self, enabled):
         self.fdb.set_setting("forum_auto_discover", "1" if enabled else "0")
         if enabled: