<?php

namespace Opentalent\OtRouter\Routing;

use Opentalent\OtCore\Page\OtPageRepository;
use Opentalent\OtRouter\Utility\RouteNormalizer;
use TYPO3\CMS\Core\Database\ConnectionPool;

/**
 * Provides methods to index the Typo3 pages and populate the routing db table
 *
 * @package Opentalent\OtRouter\Routing
 */
class Indexer
{
    const INDEX_TABLENAME = 'tx_opentalent_router';

    /**
     * @var ConnectionPool
     */
    private ConnectionPool $connectionPool;

    public function injectConnectionPool(ConnectionPool $connectionPool)
    {
        $this->connectionPool = $connectionPool;
    }

    /**
     * @var OtPageRepository
     */
    protected OtPageRepository $otPageRepository;

    public function injectOtPageRepository(OtPageRepository $otPageRepository) {
        $this->otPageRepository = $otPageRepository;
    }

    /**
     * Clear then repopulate the whole index
     */
    public function indexAllRoutes() {
        $queryBuilder = $this->connectionPool->getQueryBuilderForTable('pages');
        $rootPages = $queryBuilder
            ->select('uid')
            ->from('pages')
            ->where($queryBuilder->expr()->eq('is_siteroot', 1))
            ->execute()
            ->fetchAll();

        foreach ($rootPages as $rootPage) {
            $this->indexRoutesForWebsite($rootPage);
        }
    }

    /**
     * Clear and recreate the index entry for the target website
     *
     * @param int $rootUid
     */
    public function indexRoutesForWebsite(int $rootUid) {
        foreach ($this->otPageRepository->getAllSitePages($rootUid) as $page) {
            $this->registerIndexEntry(
                $page['uid'],
                $page['tx_opentalent_structure_domain'],
                $page['slug'],
                $rootUid
            );
        }
    }

    public function indexRouteForPage(int $pageUid) {
        $page = $this->otPageRepository->getPage($pageUid);
        $rootPage = $this->otPageRepository->getRootPageFor($pageUid);

        $this->registerIndexEntry(
            $page['uid'],
            $page['tx_opentalent_structure_domain'],
            $page['slug'],
            $rootPage['uid']
        );
    }

    private function registerIndexEntry(int $pageUid,
                                      string $domain,
                                      string $slug,
                                      ?int $rootUid = null) {
        $queryBuilder = $this->connectionPool->getQueryBuilderForTable(self::INDEX_TABLENAME);
        $queryBuilder
            ->delete(self::INDEX_TABLENAME)
            ->where($queryBuilder->expr()->eq('page_uid', $pageUid))
            ->execute();

        $entry = [
            'domain' => RouteNormalizer::normalizeDomain($domain),
            'root_uid' => $rootUid,
            'slug' => RouteNormalizer::normalizeSlug($slug),
            'page_uid' => $pageUid,
            'last_update' => date('Y-m-d H:i:s')
        ];

        $queryBuilder = $this->connectionPool->getQueryBuilderForTable(self::INDEX_TABLENAME);
        $queryBuilder
            ->insert(self::INDEX_TABLENAME)
            ->values($entry)
            ->execute();
    }
}