/**
 * Postgres connection pool shared across server-side retrieval calls.
 *
 * Reads DATABASE_URL (or SUPABASE_DB_URL). Direct pg client — bypasses the
 * Supabase REST/RLS layer so our service-role queries are first-class.
 */
import { Pool } from "pg";

const url = process.env.DATABASE_URL || process.env.SUPABASE_DB_URL;

let _pool: Pool | null = null;

export function getPool(): Pool {
  if (_pool) return _pool;
  if (!url) {
    throw new Error("DATABASE_URL (or SUPABASE_DB_URL) is not set");
  }
  _pool = new Pool({
    connectionString: url,
    max: Number(process.env.PG_POOL_MAX || 5),
    idleTimeoutMillis: 30_000,
  });
  return _pool;
}

export async function pgQuery<T = Record<string, unknown>>(
  text: string,
  params: unknown[] = [],
): Promise<T[]> {
  const pool = getPool();
  const res = await pool.query(text, params);
  return res.rows as T[];
}