Deduplicate media across scrapes and polish the viewer controls

media-scrape/src/store.ts

@@ -362,11 +362,25 @@ export class ScrapeStore {
         this.db.prepare("UPDATE media SET preview_error = ? WHERE id = ?").run(error.slice(0, 200), id);
     }
 
-    /** Fill in dimensions after a download probe. */
-    updateDimensions(id: number, width: number, height: number): void {
-        this.db
-            .prepare("UPDATE media SET width = ?, height = ?, aspect_ratio = ? WHERE id = ?")
-            .run(width, height, aspectRatioOf(width, height), id);
+    /** Fill in dimensions and duration after a download probe. */
+    updateMediaInfo(
+        id: number,
+        info: { width?: number | null; height?: number | null; durationSecs?: number | null }
+    ): void {
+        const sets: string[] = [];
+        const values: Array<number | null> = [];
+
+        if (info.width != null && info.height != null) {
+            sets.push("width = ?", "height = ?", "aspect_ratio = ?");
+            values.push(info.width, info.height, aspectRatioOf(info.width, info.height));
+        }
+        if (info.durationSecs != null) {
+            sets.push("duration_secs = ?");
+            values.push(info.durationSecs);
+        }
+
+        if (!sets.length) return;
+        this.db.prepare(`UPDATE media SET ${sets.join(", ")} WHERE id = ?`).run(...values, id);
     }
 
     /** Distinct posters with their item counts, biggest first. */