Fix search by artist and other minor fixes

- Allow fuzzy search for artist name
- Increase pool size
- Let handle_missing_track run in background

server/src/db.rs

@@ -17,7 +17,7 @@ lazy_static! {
 pub fn init_db(path: &PathBuf) -> Result<Pool<SqliteConnectionManager>> {
   let manager = SqliteConnectionManager::file(path);
   let pool = r2d2::Pool::builder()
-    .max_size(15)
+    .max_size(30)
     .build(manager)?;
 
   let mut conn = pool.get()?;

server/src/repositories/track_repository.rs

@@ -250,7 +250,7 @@ pub fn get_tracks_by_keyword(
         Some(track_name) => {
           let mut result = format!("(name_lower : \"{}\")", track_name).to_owned();
           if let Some(artist_name) = artist_name {
-            result.push_str(format!("AND (artist_name_lower : \"{}\")", artist_name).as_ref());
+            result.push_str(format!("AND (artist_name_lower : {})", artist_name).as_ref());
           }
           if let Some(album_name) = album_name {
             result.push_str(format!("AND (album_name_lower : \"{}\")", album_name).as_ref());

server/src/routes/get_lyrics_by_metadata.rs

@@ -7,7 +7,7 @@ use validator::Validate;
 use anyhow::Result;
 use crossbeam_queue::ArrayQueue;
 
-#[derive(Validate, Deserialize)]
+#[derive(Clone, Validate, Deserialize)]
 pub struct QueryParams {
   #[validate(length(min = 1, message = "cannot be empty"))]
   track_name: String,
@@ -42,7 +42,11 @@ pub async fn route(Query(params): Query<QueryParams>, State(state): State<Arc<Ap
   }
 
   // If not found, handle missing track logic
-  handle_missing_track(&params, &state).await;
+  let params_clone = params.clone();
+  let state_clone = state.clone();
+  tokio::spawn(async move {
+      handle_missing_track(&params_clone, &state_clone).await;
+  });
 
   // Retry fetching the track without the album name
   if let Some(track) = fetch_track_without_album(&params, &state).await? {