service_support: allow specifying modes to join with for each service (#326)

This updates the example config to, by default, join Automode bots as op in channels.

coremods/service_support.py

@@ -26,6 +26,10 @@ def spawn_service(irc, source, command, args):
     nick = irc.serverdata.get("%s_nick" % name) or conf.conf.get(name, {}).get('nick') or sbot.nick or name
     ident = irc.serverdata.get("%s_ident" % name) or conf.conf.get(name, {}).get('ident') or sbot.ident or name
 
+    # Specify modes to join the services bot with.
+    joinmodes = irc.serverdata.get("%s_joinmodes" % name) or conf.conf.get(name, {}).get('joinmodes') or ''
+    joinmodes = ''.join([m for m in joinmodes if m in irc.prefixmodes])
+
     if name != 'pylink' and irc.protoname == 'clientbot':
         # Prefix service bots spawned on Clientbot to prevent possible nick collisions.
         nick = 'PyLinkService@' + nick
@@ -65,7 +69,12 @@ def spawn_service(irc, source, command, args):
 
     for chan in channels:
         if utils.isChannel(chan):
-            irc.proto.join(u, chan)
+            log.debug('(%s) Joining services %s to channel %s with modes %r', irc.name, name, chan, joinmodes)
+            if joinmodes:  # Modes on join were specified; use SJOIN to burst our service
+                irc.proto.sjoin(irc.sid, chan, [(joinmodes, u)])
+            else:
+                irc.proto.join(u, chan)
+
             irc.callHooks([irc.sid, 'PYLINK_SERVICE_JOIN', {'channel': chan, 'users': [u]}])
         else:
             log.warning('(%s) Ignoring invalid autojoin channel %r.', irc.name, chan)

example-conf.yml

@@ -488,3 +488,8 @@ games:
 automode:
     # Sets the nick of the Automode service, if you're using it. This defaults to "automode" if not defined.
     nick: Automode
+
+    # For each service, you can also specify what prefix modes you want the service bot to join channels with.
+    # Setting this to op (+o) for Automode makes it appear more like a standard IRC service, and lessens
+    # the risk of mode overrides being dropped.
+    joinmodes: 'o'