<?php

namespace Config;

use App\Libraries\RateLimitIdentifier;
use App\Services\RateLimitService;
use CodeIgniter\Config\BaseService;

/**
 * Services Configuration file.
 *
 * Services are simply other classes/libraries that the system uses
 * to do its job. This is used by CodeIgniter to allow the core of the
 * framework to be swapped out easily without affecting the usage within
 * the rest of your application.
 *
 * This file holds any application-specific services, or service overrides
 * that you might need. An example has been included with the general
 * method format you should use for your service methods. For more examples,
 * see the core Services file at system/Config/Services.php.
 */
class Services extends BaseService
{
    /*
     * public static function example($getShared = true)
     * {
     *     if ($getShared) {
     *         return static::getSharedInstance('example');
     *     }
     *
     *     return new \CodeIgniter\Example();
     * }
     */

    /**
     * Сервис для проверки прав доступа (RBAC)
     *
     * @param bool $getShared
     * @return \App\Services\AccessService
     */
    public static function access(bool $getShared = true)
    {
        if ($getShared) {
            return static::getSharedInstance('access');
        }

        return new \App\Services\AccessService();
    }

    /**
     * Сервис для идентификации клиентов в rate limiting
     *
     * Использует комбинацию cookie token + IP + User Agent
     * для уникальной идентификации браузера клиента.
     *
     * @param bool $getShared
     * @return \App\Libraries\RateLimitIdentifier
     */
    public static function rateLimitIdentifier(bool $getShared = true)
    {
        if ($getShared) {
            return static::getSharedInstance('rateLimitIdentifier');
        }

        return new RateLimitIdentifier();
    }

    /**
     * Сервис для rate limiting
     *
     * Обеспечивает защиту от брутфорса и ограничение частоты запросов.
     * При недоступности Redis автоматически использует файловый кэш.
     *
     * @param bool $getShared
     * @return \App\Services\RateLimitService|null
     */
    public static function rateLimit(bool $getShared = true)
    {
        if ($getShared) {
            return static::getSharedInstance('rateLimit');
        }

        try {
            return RateLimitService::getInstance();
        } catch (\Exception $e) {
            log_message('warning', 'RateLimitService unavailable: ' . $e->getMessage());
            return null;
        }
    }
}