add announce interval for LXMF bot

client.py

@@ -31,11 +31,12 @@ class ChannelClient:
     STATE_CALLING = 3
     STATE_IN_CALL = 4
 
-    def __init__(self, configdir=None, rnsconfigdir=None, whitelist_path=None, verbosity=0):
+    def __init__(self, configdir=None, rnsconfigdir=None, whitelist_path=None, verbosity=0, announce_interval=0):
         self.state = self.STATE_IDLE
         self.channels = []
         self.telephone = None
         self.should_run = False
+        self.announce_interval = announce_interval
         self._responses = []
         self._response_event = threading.Event()
 
@@ -93,6 +94,15 @@ class ChannelClient:
             display_name="LXST Channel Client",
         )
         self.lxmf_router.register_delivery_callback(self._delivery_callback)
+        self.client_destination.announce()
+
+        if self.announce_interval > 0:
+            threading.Thread(target=self._announce_loop, daemon=True).start()
+
+    def _announce_loop(self):
+        while self.should_run:
+            time.sleep(self.announce_interval)
+            self.client_destination.announce()
 
     def _delivery_callback(self, message):
         content = message.content_as_string().strip()
@@ -378,6 +388,12 @@ def main():
         version="lxst-client 0.1.0",
     )
     parser.add_argument("-v", "--verbose", action="count", default=0)
+    parser.add_argument(
+        "--announce_interval",
+        default=0,
+        help="seconds between LXMF destination announces (0 = announce once at startup, default)",
+        type=int,
+    )
 
     args = parser.parse_args()
 
@@ -386,6 +402,7 @@ def main():
         rnsconfigdir=args.rnsconfig,
         whitelist_path=args.whitelist,
         verbosity=args.verbose,
+        announce_interval=args.announce_interval,
     )
 
     try: