init.ts

@@ -17,6 +17,8 @@ import {
   initYtdlp,
   setProgressCallback,
   setTrackReadyCallback,
+  skipSlowQueueItem,
+  getQueuedSlowItems,
   type QueueItem,
 } from "./ytdlp";
 
@@ -206,6 +208,60 @@ export async function init(): Promise<void> {
     library.logActivity("scan_updated", { id: track.id, filename: track.filename, title: track.title });
   });
 
+  // Prescan slow queue to find tracks already in library
+  function prescanSlowQueue() {
+    const queuedItems = getQueuedSlowItems();
+    if (queuedItems.length === 0) return;
+    
+    const tracks = library.getAllTracks();
+    if (tracks.length === 0) return;
+    
+    for (const item of queuedItems) {
+      const itemTitle = normalizeForMatch(item.title);
+      
+      // Check if any library track matches
+      for (const track of tracks) {
+        const trackTitle = normalizeForMatch(track.title || "");
+        const trackFilename = normalizeForMatch((track.filename || "").replace(/\.[^.]+$/, ""));
+        
+        const matches = 
+          (trackTitle && trackTitle === itemTitle) ||
+          (trackFilename && trackFilename === itemTitle) ||
+          (trackTitle && itemTitle && trackTitle.includes(itemTitle)) ||
+          (trackTitle && itemTitle && itemTitle.includes(trackTitle)) ||
+          (trackFilename && itemTitle && trackFilename.includes(itemTitle)) ||
+          (trackFilename && itemTitle && itemTitle.includes(trackFilename));
+        
+        if (matches) {
+          console.log(`[ytdlp] Prescan: "${item.title}" already exists as "${track.title || track.filename}"`);
+          
+          // Skip download and add to playlist
+          const skipped = skipSlowQueueItem(item.id, track.id);
+          if (skipped && skipped.playlistId) {
+            try {
+              addTracksToPlaylist(skipped.playlistId, [track.id]);
+              sendToUser(skipped.userId, {
+                type: "toast",
+                message: `Already in library, added to: ${skipped.playlistName}`,
+                toastType: "info"
+              });
+            } catch (e) {
+              console.error(`[ytdlp] Failed to add existing track to playlist:`, e);
+            }
+          }
+          break;
+        }
+      }
+    }
+  }
+  
+  // Run prescan periodically (every 30 seconds)
+  setInterval(prescanSlowQueue, 30000);
+  // Also run once after initial scan completes
+  library.onScanComplete(() => {
+    setTimeout(prescanSlowQueue, 1000);
+  });
+
   // Load channels from database
   const savedChannels = loadAllChannels();
   let hasDefault = false;

public/trackContainer.js

@@ -760,6 +760,7 @@
       else if (res.ok) {
         M.showToast("Removed");
         clearSelection();
+        render();
       } else {
         M.showToast("Failed to remove from queue", "error");
       }

ytdlp.ts

@@ -525,6 +525,36 @@ function notifyProgress(item: QueueItem): void {
   }
 }
 
+// Mark a slow queue item as skipped (already in library)
+export function skipSlowQueueItem(id: string, trackId: string): QueueItem | null {
+  const item = slowQueue.find(i => i.id === id && i.status === "queued");
+  if (!item) return null;
+  
+  item.status = "complete";
+  item.progress = 100;
+  item.completedAt = Date.now();
+  item.trackId = trackId;
+  
+  // Update database
+  updateSlowQueueItem(id, {
+    status: "complete",
+    progress: 100,
+    completedAt: Math.floor(item.completedAt / 1000)
+  });
+  
+  notifyProgress(item);
+  
+  // Remove from queue after brief delay
+  setTimeout(() => removeFromQueue(item), 1000);
+  
+  return item;
+}
+
+// Get queued items from slow queue (for prescan)
+export function getQueuedSlowItems(): QueueItem[] {
+  return slowQueue.filter(i => i.status === "queued");
+}
+
 // Cleanup old completed/failed items
 export function cleanupOldItems(maxAge: number = 3600000): void {
   const now = Date.now();