1 files changed, 67 insertions, 0 deletions
diff --git a/slixmpp/plugins/xep_0437/rai.py b/slixmpp/plugins/xep_0437/rai.py
new file mode 100644
index 00000000..c3c4d325
--- /dev/null
+++ b/slixmpp/plugins/xep_0437/rai.py
@@ -0,0 +1,67 @@
+"""
+    Slixmpp: The Slick XMPP Library
+    Copyright (C) 2020 Mathieu Pasquet
+    This file is part of Slixmpp.
+
+    See the file LICENSE for copying permission.
+"""
+from typing import Iterable, Optional
+
+from slixmpp import JID
+from slixmpp.plugins import BasePlugin
+from slixmpp.stanza import Presence
+from slixmpp.xmlstream.matcher import StanzaPath
+from slixmpp.xmlstream.handler import Callback
+
+from slixmpp.plugins.xep_0437 import stanza
+
+
+class XEP_0437(BasePlugin):
+    name = 'xep_0437'
+    description = 'XEP-0437: Room Activity Indicators'
+    stanza = stanza
+    namespace = stanza.NS
+
+    def plugin_init(self):
+        stanza.register_plugins()
+        self.xmpp.register_handler(Callback(
+            'RAI Received',
+            StanzaPath("presence/rai"),
+            self._handle_rai,
+        ))
+        self.xmpp.register_handler(Callback(
+            'RAI Activity Received',
+            StanzaPath("presence/rai/activity"),
+            self._handle_rai_activity,
+        ))
+
+    def plugin_end(self):
+        self.xmpp.remove_handler('RAI received')
+        self.xmpp.remove_handler('RAI Activity received')
+
+    def _handle_rai(self, presence: Presence):
+        self.xmpp.event('room_activity_bare', presence)
+
+    def _handle_rai_activity(self, presence: Presence):
+        self.xmpp.event('room_activity', presence)
+
+    def subscribe(self, service: JID, *,
+                  pfrom: Optional[JID] = None):
+        """
+        Subscribe to room activty on a MUC service.
+        :param JID service: MUC service
+        """
+        pres = self.xmpp.make_presence(pto=service, pfrom=pfrom)
+        pres.enable('rai')
+        pres.send()
+
+    def unsubscribe(self, service: JID, *,
+                    pfrom: Optional[JID] = None):
+        """
+        Unsubscribe from room activty on a MUC service.
+        :param JID service: MUC service
+        """
+        pres = self.xmpp.make_presence(
+            pto=service, pfrom=pfrom, ptype='unavailable',
+        )
+        pres.send()