Add LimitExceededError nio callback

TODO.md

@@ -2,6 +2,13 @@
 - replace "property var" by "property <object>" where applicable
 - [debug mode](https://docs.python.org/3/library/asyncio-dev.html)
 
+ideas
+(^/v) messages unread + messages still sending
+sticky avatar at top
+
+nio
+fix `RoomForgetResponse.create_error`
+
 OLD
 
 - Refactoring
@@ -9,12 +16,8 @@ OLD
   - Don't bake in size properties for components
 
 - Bug fixes
-  - dataclass-like `default_factory` for ListItem
-  - Prevent briefly seeing login screen if there are accounts to
-    resumeSession for but they take time to appear
   - 100% CPU usage when hitting top edge to trigger messages loading
   - Sending `![A picture](https://picsum.photos/256/256)` → not clickable?
-  - Icons, images and HStyle singleton aren't reloaded
   - `MessageDelegate.qml:63: TypeError: 'reloadPreviousItem' not a function`
   - RoomEventsList scrolling when resizing the window
 
@@ -55,19 +58,14 @@ OLD
   - nio.MatrixRoom has `typing_users`, no need to handle it on our own
   - Initial sync filter and lazy load, see weechat-matrix `_handle_login()`
     - See also `handle_response()`'s `keys_query` request
-  - HTTP/2
-  - `retry_after_ms` when rate-limited
   - Direct chats category
   - On sync, check messages API, if a limited sync timeline was received
   - Markdown: don't turn #things (no space) and `thing\n---` into title,
     disable `__` syntax for bold/italic
   - Push instead of replacing in stack view (remove getMemberFilter when done)
-  - Make links in room subtitle clickable, formatting?
   - `<pre>` scrollbar on overflow
-  - Handle cases where an avatar char is # or @ (#alias room, @user\_id)
   - When inviting someone to direct chat, room is "Empty room" until accepted,
     it should be the peer's display name instead.
-  - Keep an accounts order
   - See `Qt.callLater()` potential usages
   - Banner name color instead of bold
   - Animate RoomEventDelegate DayBreak apparition
@@ -80,19 +78,6 @@ OLD
   - `m.room.aliases` event
   - Support "Empty room (was ...)" after peer left
 
-- Waiting for approval/release
-  - nio avatars
-  - olm/olm-devel 0.3.1 in void repos
-
 - Distribution
-  - Review setup.py, add dependencies
+  - List dependencies
   - README.md
-  - Use PyInstaller or pyqtdeploy
-    - Test command:
-    ```
-    pyinstaller --onefile --windowed --name harmonyqml \
-                --add-data 'harmonyqml/components:harmonyqml/components' \
-                --additional-hooks-dir . \
-                --upx-dir ~/opt/upx-3.95-amd64_linux \
-                run.py
-    ```

src/python/matrix_client.py

@@ -143,7 +143,10 @@ class MatrixClient(nio.AsyncClient):
         )
 
         async with self.send_locks[room_id]:
-            print(await self.room_send(room_id, "m.room.message", content))
+            response = await self.room_send(room_id, "m.room.message", content)
+
+            if isinstance(response, nio.RoomSendError):
+                log.error("Failed to send message: %s", response)
 
 
     # Callbacks for nio responses
@@ -194,6 +197,11 @@ class MatrixClient(nio.AsyncClient):
             )
 
 
+    async def onLimitExceededError(self, resp: nio.LimitExceededError) -> None:
+        # TODO: show something in the client
+        log.warning("Failed to send message: %s", resp)
+
+
     # Callbacks for nio events
 
     # Special %tokens for event contents: