CORE: Added Last.FM scrobbling

src/jobs/lastfm_scrobble.rs

@@ -0,0 +1,34 @@
+use crate::lastfm;
+use crate::scheduler::{Job, JobContext, JobLog};
+
+pub struct LastfmScrobbleJob;
+
+#[async_trait::async_trait]
+impl Job for LastfmScrobbleJob {
+    fn name(&self) -> &'static str {
+        "lastfm_scrobble"
+    }
+
+    fn description(&self) -> &'static str {
+        "Send queued Last.fm scrobbles for connected users"
+    }
+
+    fn default_cron(&self) -> &'static str {
+        // Every minute.
+        "0 * * * * *"
+    }
+
+    async fn run(&self, ctx: &JobContext, log: &mut JobLog) -> anyhow::Result<()> {
+        if !lastfm::is_configured(&ctx.config) {
+            log.warn("Last.fm API key/shared secret are not configured; skipping scrobble outbox");
+            return Ok(());
+        }
+
+        let summary = lastfm::process_pending_scrobbles(&ctx.pool, &ctx.config, None, 50).await?;
+        log.info(&format!(
+            "Last.fm scrobble outbox processed: considered={}, sent={}, failed={}, blocked={}, skipped={}",
+            summary.considered, summary.sent, summary.failed, summary.blocked, summary.skipped
+        ));
+        Ok(())
+    }
+}