<?php

namespace App\EventSubscriber;

use Symfony\Component\EventDispatcher\EventSubscriberInterface;
use Symfony\Component\HttpKernel\Event\RequestEvent;
use Symfony\Component\HttpKernel\KernelEvents;
use Symfony\Component\HttpFoundation\RedirectResponse;

class WikiRedirectSubscriber implements EventSubscriberInterface
{
    private const WIKI_PATH_PREFIX = '/wiki';
    private const REDIRECT_BASE_URL = 'https://qualiwiki.cipherbliss.com/wiki';

    public function onKernelRequest(RequestEvent $event): void
    {
        // Don't do anything if it's not the master request
        if (!$event->isMainRequest()) {
            return;
        }

        $request = $event->getRequest();
        $path = $request->getPathInfo();

        // Check if the path starts with /wiki
        if (str_starts_with($path, self::WIKI_PATH_PREFIX)) {
            // Extract the part after /wiki
            $subPath = substr($path, strlen(self::WIKI_PATH_PREFIX));
            
            // If subPath is empty or just a slash, redirect to the base URL
            if (empty($subPath) || $subPath === '/') {
                $redirectUrl = self::REDIRECT_BASE_URL;
            } else {
                // Otherwise, append the subPath to the redirect URL
                $redirectUrl = self::REDIRECT_BASE_URL . $subPath;
            }

            // Create a redirect response
            $response = new RedirectResponse($redirectUrl, 301); // 301 is permanent redirect
            $event->setResponse($response);
        }
    }

    public static function getSubscribedEvents(): array
    {
        // Use a high priority to intercept the request before the router
        return [
            KernelEvents::REQUEST => ['onKernelRequest', 256],
        ];
    }
}