From ab655122f4a57f2ba73babbfe92acb41902b1e0e Mon Sep 17 00:00:00 2001
From: yasnazariel <82168644+yasnazariel@users.noreply.github.com>
Date: Wed, 10 Jun 2026 23:06:06 +0330
Subject: [PATCH] fix: validate HEAD response before marking snapshot available

---
 app/api/snapshots/route.ts | 17 ++++++++++++++++-
 1 file changed, 16 insertions(+), 1 deletion(-)

diff --git a/app/api/snapshots/route.ts b/app/api/snapshots/route.ts
index f16f03a..70ec209 100644
--- a/app/api/snapshots/route.ts
+++ b/app/api/snapshots/route.ts
@@ -136,7 +136,22 @@ async function fetchSnapshotData(config: SnapshotConfig): Promise<Omit<SnapshotD
     const filename = (await latestRes.text()).trim();
     const downloadUrl = `${config.baseUrl}/${filename}`;
 
-    const headRes = await fetch(downloadUrl, { method: "HEAD", cache: "no-store" });
+   const headRes = await fetch(downloadUrl, {
+  method: "HEAD",
+  cache: "no-store",
+  });
+
+  if (!headRes.ok) {
+  return {
+    ...config,
+    filename: null,
+    downloadUrl: null,
+    sizeBytes: null,
+    lastModified: null,
+    unixTimestamp: null,
+    status: "unavailable",
+  };
+}
 
     const contentLength = headRes.headers.get("content-length");
     const sizeBytes = contentLength ? parseInt(contentLength) : null;