Make telegram_link_preview configurable per-room. Fixes #244 again

mautrix_telegram/commands/portal.py

@@ -458,6 +458,7 @@ def config_defaults(evt: CommandEvent) -> Awaitable[Dict]:
         "native_stickers": evt.config["bridge.native_stickers"],
         "message_formats": evt.config["bridge.message_formats"],
         "state_event_formats": evt.config["bridge.state_event_formats"],
+        "telegram_link_preview": evt.config["bridge.telegram_link_preview"],
     }, stream)
     return evt.reply(f"Bridge instance wide config:\n\n```yaml\n{stream.getvalue()}```")
 

mautrix_telegram/portal.py

@@ -98,7 +98,6 @@ class Portal:
     public_portals = False  # type: bool
     max_initial_member_sync = -1  # type: int
     sync_channel_members = True  # type: bool
-    tg_link_preview = True  # type: bool
 
     dedup_pre_db_check = False  # type: bool
     dedup_cache_queue_length = 20  # type: int
@@ -918,9 +917,10 @@ class Portal:
                                   reply_to: TelegramID) -> None:
         lock = self.require_send_lock(sender_id)
         async with lock:
+            lp = self.get_config("telegram_link_preview")
             response = await client.send_message(self.peer, message, reply_to=reply_to,
                                                  parse_mode=self._matrix_event_to_entities,
-                                                 link_preview=self.tg_link_preview)
+                                                 link_preview=lp)
             self._add_telegram_message_to_db(event_id, space, response)
 
     async def _handle_matrix_file(self, msgtype: str, sender_id: TelegramID,
@@ -1877,7 +1877,6 @@ def init(context: Context) -> None:
     Portal.filter_list = config["bridge.filter.list"]
     Portal.dedup_pre_db_check = config["bridge.deduplication.pre_db_check"]
     Portal.dedup_cache_queue_length = config["bridge.deduplication.cache_queue_length"]
-    Portal.tg_link_preview = config["bridge.telegram_link_preview"]
     Portal.alias_template = config.get("bridge.alias_template", "telegram_{groupname}")
     Portal.hs_domain = config["homeserver.domain"]
     Portal.mx_alias_regex = re.compile(