<?php


class RateLimitRule implements RuleInterface
{
    const MAX_404_REQUESTS = 20; // Allow a maximum of 20 dead links...
    const TIME_WINDOW = 300;     // ...within 300 seconds (5 minutes)

    public function execute()
    {
        $ip = BotLogger::getRealIp();
        if (BotLogger::isWhitelisted($ip)) {
            return true;
        }
        $context = Context::getContext();

        // 1. Instantly skip if this is NOT a 404 error page.
        // During the hookActionFrontControllerInitBefore hook, PrestaShop has already 
        // resolved the route. If it failed, the controller is set to PageNotFoundController.
        if (!($context->controller instanceof PageNotFoundController)) {
            return true;
        }

        if (RateLimiter::checkIsRateLimited($ip, '404_spam', self::MAX_404_REQUESTS, self::TIME_WINDOW)) {
            BotLogger::logBan($ip, '404_RATE_LIMIT_EXCEEDED');
            header('HTTP/1.1 429 Too Many Requests');
            die('429 Too Many Requests - Stop Scanning');
        }

        return true;
    }
}