Add bot_avatar config field

mautrix_telegram/config.py

@@ -162,12 +162,13 @@ class Config(DictWithRecursion):
         copy("appservice.provisioning.enabled")
         copy("appservice.provisioning.prefix")
         copy("appservice.provisioning.shared_secret")
-        if base["appservice.provisioning.shared_secret"] == "Very secret shared secret":
+        if base["appservice.provisioning.shared_secret"] == "generate":
             base["appservice.provisioning.shared_secret"] = self._new_token()
 
         copy("appservice.id")
         copy("appservice.bot_username")
         copy("appservice.bot_displayname")
+        copy("appservice.bot_avatar")
 
         copy("appservice.as_token")
         copy("appservice.hs_token")

mautrix_telegram/context.py

@@ -14,13 +14,13 @@
 #
 # You should have received a copy of the GNU Affero General Public License
 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
+from typing import Tuple
 import asyncio
 
 from sqlalchemy.orm import scoped_session
 from alchemysession import AlchemySessionContainer
 from mautrix_appservice import AppService
 
-
 class Context:
     def __init__(self, az, db, config, loop, bot, mx, session_container, public_website,
                  provisioning_api):
@@ -38,10 +38,7 @@ class Context:
         self.session_container = session_container  # type: AlchemySessionContainer
         self.public_website = public_website  # type: PublicBridgeWebsite
         self.provisioning_api = provisioning_api  # type: ProvisioningAPI
+        self.t = (self.az, self.db, self.config, self.loop, self.bot)
 
     def __iter__(self):
-        yield self.az
-        yield self.db
-        yield self.config
-        yield self.loop
-        yield self.bot
+        return iter(self.t)

mautrix_telegram/matrix.py

@@ -36,8 +36,13 @@ class MatrixHandler:
         self.az.matrix_event_handler(self.handle_event)
 
     async def init_as_bot(self):
-        await self.az.intent.set_display_name(
-            self.config.get("appservice.bot_displayname", "Telegram bridge bot"))
+        displayname = self.config["appservice.bot_displayname"]
+        if displayname:
+            await self.az.intent.set_display_name(displayname if displayname != "remove" else "")
+
+        avatar = self.config["appservice.bot_avatar"]
+        if avatar:
+            await self.az.intent.set_avatar(avatar if avatar != "remove" else "")
 
     async def handle_puppet_invite(self, room, puppet, inviter):
         self.log.debug(f"{inviter} invited puppet for {puppet.tgid} to {room}")