feat: auto-generate manifest

src/app/.well-known/farcaster.json/route.ts

@@ -1,17 +1,24 @@
+import { readFileSync } from 'fs';
+import { join } from 'path';
+
 export async function GET() {
   const appUrl = process.env.NEXT_PUBLIC_URL;
 
+  let accountAssociation; // TODO: add type
+  try {
+    const manifestPath = join(process.cwd(), 'public/manifest.json');
+    const manifest = JSON.parse(readFileSync(manifestPath, 'utf-8'));
+    accountAssociation = manifest;
+  } catch (error) {
+    console.warn('Warning: manifest.json not found or invalid. Frame will not be associated with an account.');
+    accountAssociation = null;
+  }
+
   const config = {
-    accountAssociation: {
-      header:
-        "eyJmaWQiOjM2MjEsInR5cGUiOiJjdXN0b2R5Iiwia2V5IjoiMHgyY2Q4NWEwOTMyNjFmNTkyNzA4MDRBNkVBNjk3Q2VBNENlQkVjYWZFIn0",
-      payload: "eyJkb21haW4iOiJmcmFtZXMtdjIudmVyY2VsLmFwcCJ9",
-      signature:
-        "MHhiNDIwMzQ1MGZkNzgzYTExZjRiOTllZTFlYjA3NmMwOTdjM2JkOTY1NGM2ODZjYjkyZTAyMzk2Y2Q0YjU2MWY1MjY5NjI5ZGQ5NTliYjU0YzEwOGI4OGVmNjdjMTVlZTdjZDc2YTRiMGU5NzkzNzA3YzkxYzFkOWFjNTg0YmQzNjFi",
-    },
+    ...(accountAssociation && { accountAssociation }),
     frame: {
       version: "1",
-      name: "Frames v2 Demo",
+      name: process.env.NEXT_PUBLIC_FRAME_NAME || "Frames v2 Demo",
       iconUrl: `${appUrl}/icon.png`,
       homeUrl: appUrl,
       imageUrl: `${appUrl}/frames/hello/opengraph-image`,