Update db.js

db.js

@@ -1,53 +1,74 @@
 const admin = require('firebase-admin');
 const MiniSearch = require('minisearch');
-// require('dotenv').config();
-
-// 1. Initialize Firestore
-// if (!admin.apps.length) {
-  
-    const svc = JSON.parse(process.env.FIREBASE_CREDENTIALS);
-    admin.initializeApp({ credential: admin.credential.cert(svc) });
-  if (admin.apps.length) console.log("fire");
-      
-// }
+// require('dotenv').config(); // Good, handled by platform
+
+// 1. Initialize Firestore (The Singleton Pattern Fix)
+// We MUST check if the app is already initialized to prevent crashes on hot-reloads
+if (!admin.apps.length) {
+    try {
+        // Ensure the ENV variable exists to prevent JSON.parse error
+        if (!process.env.FIREBASE_CREDENTIALS) {
+            throw new Error('Missing FIREBASE_CREDENTIALS env var');
+        }
+        
+        const svc = JSON.parse(process.env.FIREBASE_CREDENTIALS);
+        admin.initializeApp({ credential: admin.credential.cert(svc) });
+        console.log("🔥 Firebase Admin Initialized");
+    } catch (error) {
+        console.error("❌ Firebase Init Error:", error.message);
+        process.exit(1); // Kill app if DB fails to start
+    }
+}
+
 const db = admin.firestore();
+
+// 2. FORCE HTTP (The Fix for '14 UNAVAILABLE')
+db.settings({ 
+    preferRest: true,                // Bypass gRPC, use standard HTTP
+    ignoreUndefinedProperties: true  // Good safety setting
+});
+
 const TOOLS_COLLECTION = 'mcp_tools';
 
-// 2. Initialize In-Memory Search Engine
-// We index 'name', 'desc', 'keywords' for fuzzy search
+// 3. Initialize In-Memory Search Engine
 const searchEngine = new MiniSearch({
   fields: ['name', 'description', 'keywords'], 
   storeFields: ['id', 'name', 'description', 'url', 'install_command', 'stats', 'reputation', 'analytics'], 
   searchOptions: {
-    boost: { name: 2, keywords: 1.5 }, // Name matches are more important
+    boost: { name: 2, keywords: 1.5 },
     fuzzy: 0.2,
     prefix: true
   }
 });
 
-// 3. Hydrate RAM from Disk
+// 4. Hydrate RAM from Disk
 async function hydrateMemory() {
   console.log("💧 Hydrating In-Memory Index...");
   try {
     const snapshot = await db.collection(TOOLS_COLLECTION).get();
-    const tools = [];
     
+    if (snapshot.empty) {
+        console.log("⚠️ Firestore is empty. Run scraper to populate.");
+        return;
+    }
+
+    const tools = [];
     snapshot.forEach(doc => {
       tools.push(doc.data());
     });
 
     searchEngine.removeAll();
-    if(tools.length > 0) {
-      searchEngine.addAll(tools);
-    }
+    searchEngine.addAll(tools);
     console.log(`✅ Loaded ${tools.length} MCP tools into RAM.`);
   } catch (error) {
-    console.error("❌ Hydration Failed:", error);
+    console.error("❌ Hydration Failed:", error.message);
+    // Do not throw here, or the server will crash. Just log it.
   }
 }
 
-// 4. Fast Search Wrapper
 function searchTools(query) {
+  // Add safety check in case searchEngine is empty
+  if (searchEngine.documentCount === 0) return [];
   return searchEngine.search(query);
 }