<?php
namespace Awaki;

use Index\Data\IDbConnection;
use Index\Http\Routing\IRouter;
use Syokuhou\IConfig;

final class RedirectorRoutes {
    private IDbConnection $dbConn;
    private IConfig $urls;

    public function __construct(IRouter $router, IDbConnection $dbConn, IConfig $urls) {
        $this->dbConn = $dbConn;
        $this->urls = $urls;

        $router->get('/', [$this, 'index']);

        // profile
        $router->get('/u([0-9]+)', [$this, 'redirectProfile']);
        $router->get('/p([0-9]+)', [$this, 'redirectProfile']);
        $router->get('/u/([A-Za-z0-9\-_]+)', [$this, 'redirectProfile']);
        $router->get('/p/([A-Za-z0-9\-_]+)', [$this, 'redirectProfile']);

        // forum categories
        $router->get('/f/?([0-9]+)', [$this, 'redirectForumCategory']);
        $router->get('/fc/?([0-9]+)', [$this, 'redirectForumCategory']);

        // forum topic
        $router->get('/ft/?([0-9]+)', [$this, 'redirectForumTopic']);

        // forum post
        $router->get('/fp/?([0-9]+)', [$this, 'redirectForumPost']);

        // databased, registered last cuz it matches everything otherwise!
        $router->get('/([A-Za-z0-9\-_]+)', [$this, 'redirectDatabase']);
    }

    public function index($response): void {
        $response->accelRedirect('/index.html');
        $response->setTypeHTML();
    }

    private function redirect($response, $request, $url) {
        $params = $request->getParamString();
        if(!empty($params))
            $url .= (strpos($url, '?') === false ? '?' : '&') . $params;

        $response->redirect($url, true);
    }

    public function redirectDatabase($response, $request, $id) {
        $getInfo = $this->dbConn->prepare('SELECT redir_id, redir_url FROM awk_redirects WHERE redir_id = ? OR redir_vanity = ?');
        $getInfo->addParameter(1, $id);
        $getInfo->addParameter(2, $id);
        $getInfo->execute();
        $info = $getInfo->getResult();

        if(!$info->next())
            return 404;

        $incClicks = $this->dbConn->prepare('UPDATE awk_redirects SET redir_clicks = redir_clicks + 1 WHERE redir_id = ?');
        $incClicks->addParameter(1, $info->getInteger(0));
        $incClicks->execute();

        $this->redirect($response, $request, $info->getString(1));
    }

    private function redirectSimple($response, $request, string $format, string $argument) {
        $scheme = empty($_SERVER['HTTPS']) ? 'http' : 'https';
        $argument = rawurlencode($argument);
        $url = sprintf($format, $scheme, $argument);

        $this->redirect($response, $request, $url);
    }

    public function redirectProfile($response, $request, string $userId) {
        $this->redirectSimple($response, $request, $this->urls->getString('user_profile'), $userId);
    }

    public function redirectForumCategory($response, $request, string $categoryId) {
        $this->redirectSimple($response, $request, $this->urls->getString('forum_category'), $categoryId);
    }

    public function redirectForumTopic($response, $request, string $topicId) {
        $this->redirectSimple($response, $request, $this->urls->getString('forum_topic'), $topicId);
    }

    public function redirectForumPost($response, $request, string $postId) {
        $this->redirectSimple($response, $request, $this->urls->getString('forum_post'), $postId);
    }
}