use neynar notifs

src/lib/neynar.ts

@@ -2,6 +2,9 @@ import { NeynarAPIClient } from '@neynar/nodejs-sdk';
 
 let neynarClient: NeynarAPIClient | null = null;
 
+// Example usage:
+// const client = getNeynarClient();
+// const user = await client.lookupUserByFid(fid); 
 export function getNeynarClient() {
   if (!neynarClient) {
     const apiKey = process.env.NEYNAR_API_KEY;
@@ -13,6 +16,46 @@ export function getNeynarClient() {
   return neynarClient;
 }
 
-// Example usage:
-// const client = getNeynarClient();
-// const user = await client.lookupUserByFid(fid); 
+type SendFrameNotificationResult =
+  | {
+      state: "error";
+      error: unknown;
+    }
+  | { state: "no_token" }
+  | { state: "rate_limit" }
+  | { state: "success" };
+
+export async function sendNeynarFrameNotification({
+  fid,
+  title,
+  body,
+}: {
+  fid: number;
+  title: string;
+  body: string;
+}): Promise<SendFrameNotificationResult> {
+  try {
+    const client = getNeynarClient();
+    const targetFids = [fid];
+    const notification = {
+      title,
+      body,
+      target_url: process.env.NEXT_PUBLIC_URL,
+    };
+
+    const result = await client.publishFrameNotifications({ 
+      targetFids, 
+      notification 
+    });
+
+    if (result.success) {
+      return { state: "success" };
+    } else if (result.status === 429) {
+      return { state: "rate_limit" };
+    } else {
+      return { state: "error", error: result.error || "Unknown error" };
+    }
+  } catch (error) {
+    return { state: "error", error };
+  }
+} 

src/lib/utils.ts

@@ -62,6 +62,13 @@ export async function generateFarcasterMetadata() {
     };
   }
 
+  // Determine webhook URL based on whether Neynar is enabled
+  const neynarApiKey = process.env.NEYNAR_API_KEY;
+  const neynarClientId = process.env.NEYNAR_CLIENT_ID;
+  const webhookUrl = neynarApiKey && neynarClientId 
+    ? `https://api.neynar.com/f/app/${neynarClientId}/event`
+    : `${appUrl}/api/webhook`;
+
   return {
     accountAssociation,
     frame: {
@@ -73,7 +80,7 @@ export async function generateFarcasterMetadata() {
       buttonTitle: process.env.NEXT_PUBLIC_FRAME_BUTTON_TEXT || "Launch Frame",
       splashImageUrl: process.env.NEXT_PUBLIC_FRAME_SPLASH_IMAGE_URL || `${appUrl}/splash.png`,
       splashBackgroundColor: "#f7f7f7",
-      webhookUrl: `${appUrl}/api/webhook`,
+      webhookUrl,
     },
   };
 }