Added scoring

src/lastfm.rs

@@ -12,6 +12,13 @@ pub struct SimilarArtist {
     pub match_score: f64,
 }
 
+pub struct TopTrack {
+    pub name: String,
+    pub mbid: Option<String>,
+    pub playcount: u64,
+    pub listeners: u64,
+}
+
 // Last.fm returns {"error": N, "message": "..."} on failure
 #[derive(Deserialize)]
 struct ApiError {
@@ -40,6 +47,24 @@ struct ArtistEntry {
     match_score: String,
 }
 
+#[derive(Deserialize)]
+struct TopTracksResponse {
+    toptracks: TopTracksWrapper,
+}
+
+#[derive(Deserialize)]
+struct TopTracksWrapper {
+    track: Vec<TrackEntry>,
+}
+
+#[derive(Deserialize)]
+struct TrackEntry {
+    name: String,
+    mbid: Option<String>,
+    playcount: String,
+    listeners: String,
+}
+
 impl LastfmClient {
     pub fn new(api_key: String) -> Self {
         Self { api_key }
@@ -75,4 +100,33 @@ impl LastfmClient {
             })
             .collect())
     }
+
+    pub fn get_top_tracks(
+        &self,
+        artist_mbid: &str,
+    ) -> Result<Vec<TopTrack>, Box<dyn std::error::Error>> {
+        let url = format!(
+            "{}?method=artist.getTopTracks&mbid={}&api_key={}&limit=1000&format=json",
+            BASE_URL, artist_mbid, self.api_key
+        );
+        let body: String = ureq::get(&url).call()?.body_mut().read_to_string()?;
+
+        if let Ok(err) = serde_json::from_str::<ApiError>(&body) {
+            eprintln!("  Last.fm: {}", err.message);
+            return Ok(Vec::new());
+        }
+
+        let resp: TopTracksResponse = serde_json::from_str(&body)?;
+        Ok(resp
+            .toptracks
+            .track
+            .into_iter()
+            .map(|t| TopTrack {
+                name: t.name,
+                mbid: t.mbid.filter(|s| !s.is_empty()),
+                playcount: t.playcount.parse().unwrap_or(0),
+                listeners: t.listeners.parse().unwrap_or(0),
+            })
+            .collect())
+    }
 }