refactor!(ffi): use the send queue by default to upload medias

We do consider it stable now, after months of running it in production,
so let's use it by default to simplify the `UploadParameters`.

bindings/matrix-sdk-ffi/CHANGELOG.md

@@ -36,6 +36,10 @@ All notable changes to this project will be documented in this file.
 
 ### Breaking changes:
 
+- The timeline will now always use the send queue to upload medias, so the
+  `UploadParameters::use_send_queue` bool has been removed. Make sure to listen to the send queue's
+  error updates, and to handle send queue restarts.
+  ([#5525](https://github.com/matrix-org/matrix-rust-sdk/pull/5525))
 - Support for the legacy media upload progress has been disabled. Media upload progress is
   available through the send queue, and can be enabled thanks to
   `Client::enable_send_queue_upload_progress()`.

bindings/matrix-sdk-ffi/src/timeline/mod.rs

@@ -101,8 +101,10 @@ impl Timeline {
         thumbnail: Option<Thumbnail>,
     ) -> Result<Arc<SendAttachmentJoinHandle>, RoomError> {
         let mime_str = mime_type.as_ref().ok_or(RoomError::InvalidAttachmentMimeType)?;
+
         let mime_type =
             mime_str.parse::<Mime>().map_err(|_| RoomError::InvalidAttachmentMimeType)?;
+
         let in_reply_to_event_id = params
             .in_reply_to
             .map(EventId::parse)
@@ -125,15 +127,11 @@ impl Timeline {
         };
 
         let handle = SendAttachmentJoinHandle::new(get_runtime_handle().spawn(async move {
-            let mut request =
-                self.inner.send_attachment(params.source, mime_type, attachment_config);
-
-            if params.use_send_queue {
-                request = request.use_send_queue();
-            }
-
-            request.await.map_err(|_| RoomError::FailedSendingAttachment)?;
-            Ok(())
+            self.inner
+                .send_attachment(params.source, mime_type, attachment_config)
+                .use_send_queue()
+                .await
+                .map_err(|_| RoomError::FailedSendingAttachment)
         }));
 
         Ok(handle)
@@ -197,10 +195,6 @@ pub struct UploadParameters {
     mentions: Option<Mentions>,
     /// Optional Event ID to reply to.
     in_reply_to: Option<String>,
-    /// Should the media be sent with the send queue, or synchronously?
-    ///
-    /// Watching progress only works with the synchronous method, at the moment.
-    use_send_queue: bool,
 }
 
 /// A source for uploading a file