feat: auto-join channels on admin invite

plugins/chanmgmt.py

@@ -1,6 +1,10 @@
-"""Channel management: kick, ban, unban, topic, mode."""
+"""Channel management: kick, ban, unban, topic, mode, invite-join."""
 
-from derp.plugin import command
+import logging
+
+from derp.plugin import command, event
+
+log = logging.getLogger(__name__)
 
 
 def _require_channel(message):
@@ -79,3 +83,16 @@ async def cmd_mode(bot, message):
     mode_str = parts[1]
     args = parts[2:]
     await bot.mode(message.target, mode_str, *args)
+
+
+@event("INVITE")
+async def on_invite(bot, message):
+    """Join a channel when invited by an admin or IRC operator."""
+    if not bot._is_admin(message):
+        log.info("ignoring invite from non-admin %s", message.nick)
+        return
+    channel = message.params[1] if len(message.params) > 1 else None
+    if not channel:
+        return
+    log.info("accepting invite to %s from %s", channel, message.nick)
+    await bot.join(channel)