<?php
require_once __DIR__ . '/runtime_env.php';

$host     = intranet_env('DB_HOST');
$port     = intranet_env('DB_PORT', '5432');
$dbname   = intranet_env('DB_NAME');
$username = intranet_env('DB_USER');
$password = intranet_env('DB_PASSWORD');

try {
    $pdo = new PDO(
        "pgsql:host={$host};port={$port};dbname={$dbname}",
        $username,
        $password,
        [
            PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
            PDO::ATTR_DEFAULT_FETCH_MODE => PDO::FETCH_ASSOC,
            PDO::ATTR_EMULATE_PREPARES => false,
        ]
    );
} catch (PDOException $e) {
    error_log('Database connection failed: ' . $e->getMessage());
    http_response_code(500);
    exit('Database connection failed.');
}

return $pdo;