import pg from "pg";
import dotenv from "dotenv";

dotenv.config();

const { Pool } = pg;

const pool = new Pool(
  process.env.DATABASE_URL
    ? { connectionString: process.env.DATABASE_URL }
    : {
        host: process.env.DB_HOST || "localhost",
        port: process.env.DB_PORT || 5432,
        user: process.env.DB_USER,
        password: process.env.DB_PASSWORD,
        database: process.env.DB_NAME,
        max: 20,
        idleTimeoutMillis: 30000,
        connectionTimeoutMillis: 2000,
      }
);

pool.on("connect", () => {
  console.log("Connected to PostgreSQL database");
});

pool.on("error", (err) => {
  console.error("Unexpected error on idle client", err);
  process.exit(1);
});

export default pool;