added image resizer

src/jobs/cover_variant_backfill.rs

@@ -0,0 +1,96 @@
+use std::path::{Path, PathBuf};
+
+use crate::agent::cover_variants;
+use crate::scheduler::{Job, JobContext, JobLog};
+
+pub struct CoverVariantBackfillJob;
+
+#[async_trait::async_trait]
+impl Job for CoverVariantBackfillJob {
+    fn name(&self) -> &'static str {
+        "cover_variant_backfill"
+    }
+
+    fn description(&self) -> &'static str {
+        "Generate missing resized cover image variants"
+    }
+
+    fn default_cron(&self) -> &'static str {
+        // Once a day after cover extraction and artist image assignment.
+        "0 45 3 * * *"
+    }
+
+    async fn run(&self, ctx: &JobContext, log: &mut JobLog) -> anyhow::Result<()> {
+        let storage_dir = &ctx.config.agent_storage_dir;
+        if storage_dir.is_empty() {
+            log.warn("agent_storage_dir is not configured, skipping cover variant backfill");
+            return Ok(());
+        }
+
+        let rows: Vec<(i64, String)> = sqlx::query_as(
+            "SELECT id, file_path FROM furumusic__media_file WHERE file_type = 'cover_art' ORDER BY id",
+        )
+        .fetch_all(&ctx.pool)
+        .await?;
+
+        if rows.is_empty() {
+            log.info("No cover art media files found");
+            return Ok(());
+        }
+
+        log.info(&format!(
+            "Found {} cover art media file(s), checking variants...",
+            rows.len()
+        ));
+
+        let mut created = 0usize;
+        let mut unchanged = 0usize;
+        let mut missing_original = 0usize;
+        let mut failed = 0usize;
+
+        for (media_file_id, file_path) in rows {
+            let path = resolve_media_path(storage_dir, &file_path);
+            if !path.exists() {
+                missing_original += 1;
+                log.warn(&format!(
+                    "Media file {media_file_id}: original cover not found at {}",
+                    path.display()
+                ));
+                continue;
+            }
+
+            match cover_variants::ensure_cover_variants(&path).await {
+                Ok(0) => unchanged += 1,
+                Ok(count) => {
+                    created += count;
+                    log.info(&format!(
+                        "Media file {media_file_id}: created {count} variant(s)"
+                    ));
+                }
+                Err(err) => {
+                    failed += 1;
+                    log.warn(&format!(
+                        "Media file {media_file_id}: failed to create variants: {err}"
+                    ));
+                }
+            }
+        }
+
+        log.info(&format!(
+            "Cover variant backfill complete: {created} variant(s) created, \
+             {unchanged} original(s) already complete, {missing_original} missing original(s), \
+             {failed} failed original(s)"
+        ));
+
+        Ok(())
+    }
+}
+
+fn resolve_media_path(storage_dir: &str, file_path: &str) -> PathBuf {
+    let path = PathBuf::from(file_path);
+    if path.is_absolute() {
+        path
+    } else {
+        Path::new(storage_dir).join(path)
+    }
+}

src/jobs/mod.rs

@@ -1,6 +1,7 @@
 pub mod artist_image_backfill;
 pub mod artist_track_image_backfill;
 pub mod cover_backfill;
+pub mod cover_variant_backfill;
 pub mod inbox_discover;
 pub mod inbox_process;
 pub mod lastfm_popularity;