Migrate DB driver from Neon-HTTP to node-postgres for improved compatibility

src/db/index.ts

@@ -1,19 +1,25 @@
-import { drizzle, NeonHttpDatabase } from 'drizzle-orm/neon-http';
-import { neon } from '@neondatabase/serverless';
+import { drizzle } from 'drizzle-orm/node-postgres';
+import { Pool } from 'pg';
 import * as schema from './schema';
 
-// Best Practice:
-// In Vercel builds, environment variables might be missing during the "Build" step.
-// We provide a fallback connection string to allow the code to load and type-check.
-// The app will fail fast at runtime if it tries to actually query with this invalid URL.
+// Best Practice for VPS/Self-Hosting:
+// We use 'pg' (node-postgres) which connects via standard TCP.
+// This works for local Postgres, Docker, VPS, and managed clouds (AWS RDS, Neon, etc.).
+
 const connectionString = process.env.DATABASE_URL || 'postgres://placeholder:placeholder@localhost:5432/placeholder';
 
-const sql = neon(connectionString);
+// Create a connection pool
+const pool = new Pool({
+    connectionString,
+    max: 20, // Adjust based on your server capacity
+    idleTimeoutMillis: 30000,
+    connectionTimeoutMillis: 2000,
+});
 
-// Create the Drizzle client with the specific schema type
-export const db = drizzle(sql, { schema });
+// Create the Drizzle client
+export const db = drizzle(pool, { schema });
 
-// Helper to check if DB is configured (useful for UI checks)
+// Helper to check if DB is configured
 export const isDbAvailable = () => !!process.env.DATABASE_URL;
 
 // Export schema for use elsewhere