Make it a little faster, queue is in sqlite now, fix db bug and more

Tesses.YouTubeDownloader.Server/res/service_worker.js

@@ -2,6 +2,13 @@ const assets = ["<@ASSETS@>"];
 
 const staticCacheName = "tytd-static-<@BUILD_TIME@>";
 
+async function ThrowOnBadGateway(req)
+{
+    const resp = await fetch(req);
+    if(resp.status === 502) throw new Error("Bad Gateway");
+    return resp;
+}
+
 self.addEventListener('install',evt => {
     evt.waitUntil(
         caches.open(staticCacheName).then(cache =>{
@@ -19,24 +26,29 @@ self.addEventListener('activate',(evt)=>{
 });
 
 self.addEventListener('fetch', evt => {
-    const uri = new URL(evt.request.url);
     
     evt.respondWith(
-        
+
         caches.match(evt.request).then(cacheRes=>{
-            return cacheRes || fetch(evt.request);
-        }).catch(()=>{
-            if(uri.pathname === '/queue-size')
+            console.warn('SW cacheRes:', cacheRes);
+            return cacheRes || ThrowOnBadGateway(evt.request);
+        }).catch((err)=>{
+            console.warn('SW Fallback:', err.message);
+            if(evt.request.headers.has('HX-Request'))
             {
-                return new Response('<span hx-trigger="every 5000ms" hx-target="this" hx-push-url="false" hx-indicator="none" hx-get="./queue-size"  hx-swap="outerHTML" class="badge">?</span>',{
-                    headers: { 'Content-Type': 'text/html' }
-                  });
+                
+                return new Response("",{
+                    status: 200,
+                    headers: {
+                        'HX-Redirect': "/offline.html"
+                    }
+                });
             }
-            if(uri.pathname === "/progress")
+            else
             {
-                return caches.match("/offline-progress.html");
+                return caches.match('/offline.html');
+
             }
-            return caches.match('/offline.html');
         })
     );
-});
+});