refactor: 优化填充视频详情时的性能 (#350)

crates/bili_sync/src/workflow.rs

@@ -103,7 +103,10 @@ pub async fn fetch_video_details(
 ) -> Result<()> {
     video_source.log_fetch_video_start();
     let videos_model = filter_unfilled_videos(video_source.filter_expr(), connection).await?;
-    for video_model in videos_model {
+    let tasks = videos_model
+        .into_iter()
+        .map(|video_model| {
+            async move {
                 let video = Video::new(bili_client, video_model.bvid.clone());
                 let info: Result<_> = async { Ok((video.get_tags().await?, video.get_view_info().await?)) }.await;
                 match info {
@@ -135,7 +138,11 @@ pub async fn fetch_video_details(
                         txn.commit().await?;
                     }
                 };
+                Ok::<_, anyhow::Error>(())
             }
+        })
+        .collect::<FuturesUnordered<_>>();
+    tasks.try_collect::<Vec<_>>().await?;
     video_source.log_fetch_video_end();
     Ok(())
 }