enable user mention in custom message!

base-config.yaml

@@ -6,5 +6,6 @@ rooms:
 # (optional)
 notification_room: 
 
+# you can use {user} to reference the joining userID in this message
 message: |
-    Welcome! Please be sure to read the topic for helpful links and information.
+    Welcome {user}! Please be sure to read the topic for helpful links and information.

maubot.yaml

@@ -1,6 +1,6 @@
 maubot: 0.1.0
 id: org.jobmachine.welcome
-version: 0.0.2
+version: 0.0.3
 modules:
   - welcome
 main_class: Greeter

welcome.py

@@ -30,7 +30,10 @@ class Greeter(Plugin):
             if evt.source & SyncStream.STATE:
                 return
             else:
-                await self.client.send_notice(evt.room_id, html=self.config["message"]) 
+                nick = self.client.parse_user_id(evt.sender)[0]
+                pill = '<a href="https://matrix.to/#/{mxid}">{nick}</a>'.format(mxid=evt.sender, nick=nick)
+                msg = self.config["message"].format(user=pill) 
+                await self.client.send_notice(evt.room_id, html=msg) 
                 if self.config["notification_room"]:
                     await self.client.send_markdown(self.config["notification_room"], f"User {evt.sender} joined \
                             {evt.room_id} and I want everyone in this @room to know")