// Integration: javascript_database blueprint
import { Pool as NeonPool, neonConfig } from '@neondatabase/serverless';
import { drizzle as drizzleNeon } from 'drizzle-orm/neon-serverless';
import { drizzle as drizzlePg } from 'drizzle-orm/node-postgres';
import { Pool as PgPool } from 'pg';
import ws from "ws";
import * as schema from "@shared/schema";

if (!process.env.DATABASE_URL) {
  throw new Error(
    "DATABASE_URL must be set. Did you forget to provision a database?",
  );
}

// Usa driver standard PostgreSQL per server locale, Neon per cloud
const isLocalDb = process.env.DATABASE_URL.includes('localhost') || 
                  process.env.DATABASE_URL.includes('127.0.0.1') ||
                  process.env.DOMAIN === 'vt.alfacom.it';

let pool: NeonPool | PgPool;
let db: any; // Type unification per drizzle

if (isLocalDb) {
  console.log("🗄️  Usando driver PostgreSQL standard (locale)");
  pool = new PgPool({ connectionString: process.env.DATABASE_URL });
  db = drizzlePg(pool, { schema });
} else {
  console.log("🗄️  Usando driver Neon serverless (cloud)");
  neonConfig.webSocketConstructor = ws;
  pool = new NeonPool({ connectionString: process.env.DATABASE_URL });
  db = drizzleNeon({ client: pool, schema });
}

export { pool, db };