Added the playlist generator

src/routes/artists.rs

@@ -193,8 +193,12 @@ async fn get_cached_album_tracks(
     let release_mbid = if let Some(rid) = first_release_id {
         rid.to_string()
     } else {
-        // Browse releases for this release group
-        resolve_release_from_group(rg_id).await?
+        // Browse releases for this release group (through shared rate limiter)
+        state
+            .mb_client
+            .resolve_release_from_group(rg_id)
+            .await
+            .map_err(|e| ApiError::Internal(format!("MB error for group {rg_id}: {e}")))?
     };
 
     let mb_tracks = state
@@ -228,37 +232,6 @@ async fn get_cached_album_tracks(
     Ok(cached)
 }
 
-/// Given a release-group MBID, find the first release MBID.
-async fn resolve_release_from_group(release_group_mbid: &str) -> Result<String, ApiError> {
-    tokio::time::sleep(std::time::Duration::from_millis(1100)).await;
-
-    let client = reqwest::Client::builder()
-        .user_agent("Shanty/0.1.0 (shanty-music-app)")
-        .build()
-        .map_err(|e| ApiError::Internal(e.to_string()))?;
-
-    let url = format!(
-        "https://musicbrainz.org/ws/2/release?release-group={release_group_mbid}&fmt=json&limit=1"
-    );
-
-    let resp: serde_json::Value = client
-        .get(&url)
-        .send()
-        .await
-        .map_err(|e| ApiError::Internal(e.to_string()))?
-        .json()
-        .await
-        .map_err(|e| ApiError::Internal(e.to_string()))?;
-
-    resp.get("releases")
-        .and_then(|r| r.as_array())
-        .and_then(|arr| arr.first())
-        .and_then(|r| r.get("id"))
-        .and_then(|id| id.as_str())
-        .map(String::from)
-        .ok_or_else(|| ApiError::NotFound(format!("no releases for group {release_group_mbid}")))
-}
-
 #[derive(Deserialize)]
 pub struct ArtistFullParams {
     #[serde(default)]