Allow filtering direct chats with filter config (#892)

mautrix_telegram/config.py

@@ -205,6 +205,7 @@ class Config(BaseBridgeConfig):
 
         copy("bridge.filter.mode")
         copy("bridge.filter.list")
+        copy("bridge.filter.users")
 
         copy("bridge.command_prefix")
 

mautrix_telegram/example-config.yaml

@@ -483,7 +483,6 @@ bridge:
     # Filter rooms that can/can't be bridged. Can also be managed using the `filter` and
     # `filter-mode` management commands.
     #
-    # Filters do not affect direct chats.
     # An empty blacklist will essentially disable the filter.
     filter:
         # Filter mode to use. Either "blacklist" or "whitelist".
@@ -492,6 +491,11 @@ bridge:
         mode: blacklist
         # The list of group/channel IDs to filter.
         list: []
+        # How to handle direct chats:
+        # If users is "null", direct chats will follow the previous settings.
+        # If users is "true", direct chats will always be bridged.
+        # If users is "false", direct chats will never be bridged.
+        users: true
 
     # The prefix for commands. Only required in non-management rooms.
     command_prefix: "!tg"

mautrix_telegram/portal.py

@@ -281,6 +281,7 @@ class Portal(DBPortal, BasePortal):
     # Config cache
     filter_mode: str
     filter_list: list[int]
+    filter_users: bool | None
 
     max_initial_member_sync: int
     sync_channel_members: bool
@@ -455,8 +456,8 @@ class Portal(DBPortal, BasePortal):
     def allow_bridging(self) -> bool:
         if self._bridging_blocked_at_runtime:
             return False
-        elif self.peer_type == "user":
+        elif self.peer_type == "user" and self.filter_users is not None:
-            return True
+            return self.filter_users
         elif self.filter_mode == "whitelist":
             return self.tgid in self.filter_list
         elif self.filter_mode == "blacklist":
@@ -487,6 +488,7 @@ class Portal(DBPortal, BasePortal):
         cls.private_chat_portal_meta = cls.config["bridge.private_chat_portal_meta"]
         cls.filter_mode = cls.config["bridge.filter.mode"]
         cls.filter_list = cls.config["bridge.filter.list"]
+        cls.filter_users = cls.config["bridge.filter.filter_users"]
         cls.hs_domain = cls.config["homeserver.domain"]
         cls.backfill_msc2716 = cls.config["bridge.backfill.msc2716"]
         cls.backfill_enable = cls.config["bridge.backfill.enable"]