1 files changed, 63 insertions, 0 deletions
diff --git a/slixmpp/plugins/xep_0444/reactions.py b/slixmpp/plugins/xep_0444/reactions.py
new file mode 100644
index 00000000..bfd12499
--- /dev/null
+++ b/slixmpp/plugins/xep_0444/reactions.py
@@ -0,0 +1,63 @@
+"""
+    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
+
+from slixmpp import JID
+from slixmpp.plugins import BasePlugin
+from slixmpp.stanza import Message
+from slixmpp.xmlstream import register_stanza_plugin
+from slixmpp.xmlstream.matcher import MatchXMLMask
+from slixmpp.xmlstream.handler import Callback
+
+from slixmpp.plugins.xep_0444 import stanza
+
+
+class XEP_0444(BasePlugin):
+    name = 'xep_0444'
+    description = 'XEP-0444: Message Reactions'
+    dependencies = {'xep_0030', 'xep_0334'}
+    stanza = stanza
+    namespace = stanza.NS
+
+    def plugin_init(self):
+        self.xmpp.register_handler(
+            Callback(
+                'Reaction received',
+                MatchXMLMask('<message><reactions xmlns="urn:xmpp:reactions:0"/></message>'),
+                self._handle_reactions,
+            )
+        )
+        register_stanza_plugin(Message, stanza.Reactions)
+        register_stanza_plugin(stanza.Reactions, stanza.Reaction, iterable=True)
+
+    def session_bind(self, event):
+        self.xmpp['xep_0030'].add_feature(stanza.NS)
+
+    def plugin_end(self):
+        self.xmpp.remove_handler('Reaction received')
+        self.xmpp['xep_0030'].remove_feature(stanza.NS)
+
+    def _handle_reactions(self, message: Message):
+        self.xmpp.event('reactions', message)
+
+    def send_reactions(self, to: JID, to_id: str, reactions: Iterable[str], *, store=True):
+        """Send reactions related to a message"""
+        msg = self.xmpp.make_message(mto=to)
+        self.set_reactions(msg, to_id, reactions)
+        if store:
+            msg.enable('store')
+        msg.send()
+
+    @staticmethod
+    def set_reactions(message: Message, to_id: str, reactions: Iterable[str]):
+        """Add reactions to a Message object."""
+        message['reactions']['id'] = to_id
+        for reaction in reactions:
+            reaction_stanza = stanza.Reaction()
+            reaction_stanza['value'] = reaction
+            message['reactions'].append(reaction_stanza)