<?php

/**
 * Database configuration - credentials loaded from environment variables
 */

$getEnvOrThrow = function(string $name): string {
    $value = getenv($name);
    if ($value === false || $value === '') {
        throw new \RuntimeException("Environment variable {$name} is not set");
    }
    return $value;
};

return array('db_req' =>
    array(
        'driver_class' => '\PDO',
        'dsn' => $getEnvOrThrow('DB_DSN'),
        'driver_params' => array(
            'username' => $getEnvOrThrow('DB_USER'),
            'password' => $getEnvOrThrow('DB_PASSWORD'),
        ),
    )
);