From dcb6f952cc048d4185a2f77db600874d62791255 Mon Sep 17 00:00:00 2001
From: Antigravity <bot@antigravity.ai>
Date: Sat, 13 Jun 2026 22:53:04 -0400
Subject: [PATCH] Fix EISDIR error when credentials.json is an empty directory
 due to missing k8s secret

---
 gmail-agent/index.js | 22 +++++++++++++++-------
 1 file changed, 15 insertions(+), 7 deletions(-)

diff --git a/gmail-agent/index.js b/gmail-agent/index.js
index 8c464ed..c88615d 100644
--- a/gmail-agent/index.js
+++ b/gmail-agent/index.js
@@ -7,6 +7,13 @@ const { google } = require('googleapis');
 const TOKENS_DIR = path.join(__dirname, 'tokens');
 const CREDENTIALS_PATH = path.join(__dirname, 'credentials.json');
 
+function getCredentials() {
+    if (!fs.existsSync(CREDENTIALS_PATH) || fs.statSync(CREDENTIALS_PATH).isDirectory()) {
+        throw new Error('Google OAuth credentials.json is missing. Please create the gmail-agent-auth Kubernetes Secret with your Google Cloud OAuth credentials.');
+    }
+    return JSON.parse(fs.readFileSync(CREDENTIALS_PATH));
+}
+
 const OLLAMA_URL = process.env.OLLAMA_URL || 'http://ollama.ai-agents.svc.cluster.local:11434/api/generate';
 const WHATSAPP_GATEWAY_URL = process.env.WHATSAPP_GATEWAY_URL || 'http://whatsapp-gateway.ai-agents.svc.cluster.local:5001/api/send-message';
 const WHATSAPP_TO = process.env.WHATSAPP_TO || '+14085505485';
@@ -16,17 +23,18 @@ let baseOAuth2Client;
 let accounts = [];
 
 function loadAuth() {
-    if (!fs.existsSync(CREDENTIALS_PATH)) {
-        console.warn('⚠️ Missing credentials.json. Gmail Agent will not be able to process emails or authenticate new accounts until this file is provided.');
-        return;
-    }
+    try {
+        if (!fs.existsSync(CREDENTIALS_PATH) || fs.statSync(CREDENTIALS_PATH).isDirectory()) {
+            console.warn('⚠️ Missing credentials.json. Gmail Agent will not be able to process emails or authenticate new accounts until this file is provided.');
+            return;
+        }
     if (!fs.existsSync(TOKENS_DIR)) {
         fs.mkdirSync(TOKENS_DIR, { recursive: true });
         console.log('Created empty tokens directory.');
     }
     
     try {
-        const creds = JSON.parse(fs.readFileSync(CREDENTIALS_PATH));
+        const creds = getCredentials();
         const {client_secret, client_id, redirect_uris} = creds.installed || creds.web;
         baseOAuth2Client = { client_id, client_secret, redirect_uri: redirect_uris[0] || 'urn:ietf:wg:oauth:2.0:oob' };
         
@@ -204,7 +212,7 @@ app.post('/api/auth/url', (req, res) => {
     if (!accountName) return res.status(400).json({ success: false, error: 'accountName is required' });
     
     try {
-        const creds = JSON.parse(fs.readFileSync(CREDENTIALS_PATH));
+        const creds = getCredentials();
         const {client_secret, client_id, redirect_uris} = creds.installed || creds.web;
         const oAuth2Client = new google.auth.OAuth2(client_id, client_secret, redirect_uris[0] || 'urn:ietf:wg:oauth:2.0:oob');
         
@@ -226,7 +234,7 @@ app.post('/api/auth/token', (req, res) => {
     if (!accountName || !code) return res.status(400).json({ success: false, error: 'accountName and code are required' });
     
     try {
-        const creds = JSON.parse(fs.readFileSync(CREDENTIALS_PATH));
+        const creds = getCredentials();
         const {client_secret, client_id, redirect_uris} = creds.installed || creds.web;
         const oAuth2Client = new google.auth.OAuth2(client_id, client_secret, redirect_uris[0] || 'urn:ietf:wg:oauth:2.0:oob');