Actually apply displayname_template

Also get rid of displayname_preference until it's implemented

matrix_appservice_kakaotalk/config.py

@@ -71,7 +71,6 @@ class Config(BaseBridgeConfig):
 
         copy("bridge.username_template")
         copy("bridge.displayname_template")
-        copy("bridge.displayname_preference")
         copy("bridge.command_prefix")
 
         copy("bridge.initial_chat_sync")

matrix_appservice_kakaotalk/example-config.yaml

@@ -97,14 +97,6 @@ bridge:
     #               as defined below in displayname_preference.
     # Keys available for displayname_preference are also available here.
     displayname_template: "{displayname} (KT)"
-    # Available keys: TODO
-    # "name" (full name)
-    # "first_name"
-    # "last_name"
-    # "nickname"
-    # "own_nickname" (user-specific!)
-    displayname_preference:
-    - nickname
 
     # The prefix for commands. Only required in non-management rooms.
     command_prefix: "!kt"

matrix_appservice_kakaotalk/puppet.py

@@ -193,6 +193,7 @@ class Puppet(DBPuppet, BasePuppet):
         return self
 
     async def _update_name(self, name: str) -> bool:
+        name = self.config["bridge.displayname_template"].format(displayname=name)
         if name != self.name or not self.name_set:
             self.name = name
             try: