From 8287ed0aabdf97c988cd644d831564d19a87f7f8 Mon Sep 17 00:00:00 2001
From: Dmitri <dtroshchenkov@gmail.com>
Date: Thu, 9 Apr 2026 10:36:32 +0400
Subject: [PATCH] debug

---
 frontend/src/lib/offline/DownloadManager.ts | 36 ++++++++++++++++++++-
 1 file changed, 35 insertions(+), 1 deletion(-)

diff --git a/frontend/src/lib/offline/DownloadManager.ts b/frontend/src/lib/offline/DownloadManager.ts
index 55b68a5..3a409ab 100644
--- a/frontend/src/lib/offline/DownloadManager.ts
+++ b/frontend/src/lib/offline/DownloadManager.ts
@@ -226,9 +226,21 @@ class DownloadManagerClass {
    * Process the download queue
    */
   private async processQueue(): Promise<void> {
-    if (this.isProcessing || this.isPaused) return;
+    if (this.isProcessing || this.isPaused) {
+      logger.info('[DownloadManager] processQueue skipped', {
+        isProcessing: this.isProcessing,
+        isPaused: this.isPaused,
+      });
+      return;
+    }
     if (this.queue.length === 0 && this.activeDownloads.size === 0) return;
 
+    logger.info('[DownloadManager] processQueue starting', {
+      queueLength: this.queue.length,
+      activeDownloads: this.activeDownloads.size,
+      maxConcurrent: this.config.maxConcurrent,
+    });
+
     this.isProcessing = true;
 
     while (
@@ -239,6 +251,11 @@ class DownloadManagerClass {
       const job = this.queue.shift();
       if (!job) break;
 
+      logger.info('[DownloadManager] Starting download', {
+        storageKey: job.storageKey.slice(-50),
+        url: job.url.slice(0, 80),
+      });
+
       this.activeDownloads.set(job.url, job);
       this.downloadAsset(job);
     }
@@ -272,11 +289,22 @@ class DownloadManagerClass {
         });
       }
 
+      logger.info('[DownloadManager] Fetching', {
+        url: job.url.slice(0, 100),
+        hasRangeHeader: !!headers['Range'],
+      });
+
       const response = await fetch(job.url, {
         signal: job.abortController.signal,
         headers,
       });
 
+      logger.info('[DownloadManager] Fetch response', {
+        status: response.status,
+        ok: response.ok,
+        contentLength: response.headers.get('content-length'),
+      });
+
       // Accept both 200 OK and 206 Partial Content
       if (!response.ok && response.status !== 206) {
         throw new Error(`HTTP ${response.status}: ${response.statusText}`);
@@ -394,6 +422,12 @@ class DownloadManagerClass {
         await OfflineDbManager.removeFromQueue(job.id);
       }
 
+      logger.info('[DownloadManager] Download complete', {
+        storageKey: job.storageKey.slice(-50),
+        bytesLoaded: job.bytesLoaded,
+        isPartial: job.isPartial,
+      });
+
       downloadEventBus.emitPreloadComplete({
         jobId: job.id,
         assetId: job.assetId,