improve SEO on UGC, proxy S3

website/src/routes/api/proxy/s3/[...path]/+server.ts

@@ -0,0 +1,35 @@
+import { PUBLIC_B2_BUCKET, PUBLIC_B2_ENDPOINT } from "$env/static/public";
+import { error } from '@sveltejs/kit';
+
+export async function GET({ params, request }) {
+    const path = params.path;
+    
+    if (!path) {
+        throw error(400, 'Path is required');
+    }
+
+    try {
+        const s3Url = `${PUBLIC_B2_ENDPOINT}/${PUBLIC_B2_BUCKET}/${path}`;
+        const response = await fetch(s3Url);
+
+        if (!response.ok) {
+            throw error(response.status, 'Failed to fetch from S3');
+        }
+
+        const contentType = response.headers.get('content-type') || 'application/octet-stream';
+        const buffer = await response.arrayBuffer();
+
+        return new Response(buffer, {
+            headers: {
+                'Content-Type': contentType,
+                'Cache-Control': 'public, max-age=60',
+                'Access-Control-Allow-Origin': '*',
+                'Access-Control-Allow-Methods': 'GET',
+                'Access-Control-Allow-Headers': 'Content-Type'
+            }
+        });
+    } catch (e) {
+        console.error('Proxy error:', e);
+        throw error(500, 'Failed to proxy S3 request');
+    }
+}