service/media: use upload_thumbnail() in get_thumbnail()

src/service/media.rs

@@ -327,14 +327,16 @@ impl Service {
 
         debug!("Saving created thumbnail");
 
-        // Save thumbnail in database so we don't have to generate it
+        let meta = self
-        // again next time
+            .upload_thumbnail(
-        let thumbnail_key =
+                mxc,
-            self.db.create_file_metadata(mxc, width, height, &meta)?;
+                meta.content_disposition,
-
+                meta.content_type,
-        let path = services().globals.get_media_file(&thumbnail_key);
+                width,
-        let mut f = File::create(path).await?;
+                height,
-        f.write_all(&thumbnail_bytes).await?;
+                &thumbnail_bytes,
+            )
+            .await?;
 
         Ok(Some((meta, thumbnail_bytes.clone())))
     }