fix: This is some bullshit I tell you

src/admin/debug/commands.rs

@@ -22,7 +22,7 @@ use futures::{FutureExt, StreamExt, TryStreamExt};
 use lettre::message::Mailbox;
 use ruma::{
 	CanonicalJsonObject, CanonicalJsonValue, EventId, OwnedEventId, OwnedRoomId,
-	OwnedRoomOrAliasId, OwnedServerName, RoomId, RoomVersionId, UInt,
+	OwnedRoomOrAliasId, OwnedServerName, RoomId, RoomVersionId, ServerName, UInt,
 	api::federation::event::get_room_state, events::AnyStateEvent, serde::Raw,
 };
 use service::rooms::{
@@ -1138,3 +1138,32 @@ pub(super) async fn send_test_email(&self) -> Result {
 
 	Ok(())
 }
+
+#[admin_command]
+pub(super) async fn walk_missing_events(
+	&self,
+	latest: OwnedEventId,
+	earliest: OwnedEventId,
+	via: String,
+) -> Result {
+	let earliest_pdu = self.services.rooms.timeline.get_pdu(&earliest).await?;
+	let events = self
+		.services
+		.rooms
+		.event_handler
+		.backfill_missing_events(
+			earliest_pdu.room_id_or_hash(),
+			HashSet::from_iter(vec![latest]),
+			vec![earliest],
+			ServerName::parse(via)?,
+		)
+		.await?;
+	self.write_str(&format!("Found {} events:\n\n```\n", events.len()))
+		.await?;
+	for (event_id, event) in events {
+		self.write_str(&format!("{event_id}: {:?}\n\n", serde_json::to_string(&event)))
+			.await?;
+	}
+	self.write_str("\n```").await?;
+	Ok(())
+}

src/admin/debug/mod.rs

@@ -32,6 +32,12 @@ pub enum DebugCommand {
 		event_id: OwnedEventId,
 	},
 
+	WalkMissingEvents {
+		latest: OwnedEventId,
+		earliest: OwnedEventId,
+		via: String,
+	},
+
 	/// Parse and print a PDU from a JSON
 	///
 	/// The PDU event is only checked for validity and is not added to the