fix: add CORS headers and root redirect to worker

Author: sshrihar

.github/workflows/deploy.yaml

@@ -24,10 +24,10 @@ jobs:
             export ENV=production
             export PROJECT_NAME="polygon-token-list"
           elif [ "${{ github.ref_name }}" == "dev" ]; then
-            export ENV=preview
+            export ENV=staging
             export PROJECT_NAME="polygon-token-list-staging"
           else
-            export ENV=preview
+            export ENV=staging
             export PROJECT_NAME="polygon-token-list-staging"
           fi
 
@@ -42,17 +42,9 @@ jobs:
       - uses: actions/setup-node@v5
       - run: npm ci
       - run: npm run build
-      - name: Create Pages Project (if not exists)
+      - name: Deploy to Cloudflare Workers
         uses: cloudflare/wrangler-action@v3
         with:
-          command: pages project create ${{ needs.get-env.outputs.project-name }} --production-branch master
-          apiToken: ${{ secrets.CF_WORKER_API_TOKEN }}
-          accountId: ${{ secrets.CF_WORKER_ACCOUNT_ID }}
-        continue-on-error: true
-      
-      - name: Deploy to Cloudflare Pages
-        uses: cloudflare/wrangler-action@v3
-        with:
-          command: pages deploy build --project-name ${{ needs.get-env.outputs.project-name }}
+          environment: ${{ needs.get-env.outputs.env }}
           apiToken: ${{ secrets.CF_WORKER_API_TOKEN }}
           accountId: ${{ secrets.CF_WORKER_ACCOUNT_ID }}

src/worker.js

@@ -15,17 +15,65 @@ export default {
       });
     }
 
-    // For all requests, let Cloudflare handle static assets and just add CORS headers
-    // The worker will only add CORS headers, not handle the actual content
-    return new Response('Worker is running but static assets should be handled by Cloudflare', {
-      status: 200,
+    // Handle root redirect to listRegistry.json
+    if (url.pathname === '/') {
+      const redirectUrl = new URL('/listRegistry.json', url.origin);
+      let response;
+      
+      try {
+        if (env.ASSETS) {
+          response = await env.ASSETS.fetch(new Request(redirectUrl, request));
+        } else {
+          // Fallback for local development - fetch from local server
+          response = await fetch(redirectUrl);
+        }
+      } catch (error) {
+        console.error('Error fetching listRegistry.json:', error);
+        response = await fetch(redirectUrl);
+      }
+      
+      return new Response(response.body, {
+        status: response.status,
+        statusText: response.statusText,
+        headers: {
+          ...response.headers,
+          'Access-Control-Allow-Origin': '*',
+          'Access-Control-Allow-Methods': 'GET, HEAD, POST, OPTIONS',
+          'Access-Control-Allow-Headers': 'Content-Type, X-Requested-With',
+          'Access-Control-Max-Age': '86400',
+        },
+      });
+    }
+
+    // For all other requests, let Cloudflare serve static assets
+    // and add CORS headers to the response
+    let response;
+    
+    try {
+      if (env.ASSETS) {
+        response = await env.ASSETS.fetch(request);
+      } else {
+        // Fallback for local development
+        response = await fetch(request);
+      }
+    } catch (error) {
+      console.error('Error fetching asset:', error);
+      response = await fetch(request);
+    }
+    
+    // Clone the response to add CORS headers
+    const newResponse = new Response(response.body, {
+      status: response.status,
+      statusText: response.statusText,
       headers: {
-        'Content-Type': 'text/plain',
+        ...response.headers,
         'Access-Control-Allow-Origin': '*',
         'Access-Control-Allow-Methods': 'GET, HEAD, POST, OPTIONS',
         'Access-Control-Allow-Headers': 'Content-Type, X-Requested-With',
         'Access-Control-Max-Age': '86400',
       },
     });
+
+    return newResponse;
   },
 };

wrangler.toml

@@ -1,8 +1,16 @@
 name = "polygon-token-list"
+main = "src/worker.js"
 compatibility_date = "2024-12-30"
-pages_build_output_dir = "build"
+placement = { mode = "smart" }
+preview_urls = false
+send_metrics = false
+workers_dev = false
 
-[env.preview]
+# Static assets with worker for OPTIONS handling
+[assets]
+directory = "build"
+
+[env.staging]
 routes = [
     { pattern = "api-polygon-tokens.staging.polygon.technology", custom_domain = true },
 ]