<?php

namespace WapplerSystems\Meilisearch\Domain\Site;

/***************************************************************
 *  Copyright notice
 *
 *  (c) 2011-2015 Ingo Renner <ingo@typo3.org>
 *  All rights reserved
 *
 *  This script is part of the TYPO3 project. The TYPO3 project is
 *  free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 3 of the License, or
 *  (at your option) any later version.
 *
 *  The GNU General Public License can be found at
 *  http://www.gnu.org/copyleft/gpl.html.
 *
 *  This script is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  This copyright notice MUST APPEAR in all copies of the script!
 ***************************************************************/

use WapplerSystems\Meilisearch\Domain\Index\Queue\RecordMonitor\Helper\ConfigurationAwareRecordService;
use WapplerSystems\Meilisearch\NoSolrConnectionFoundException;
use WapplerSystems\Meilisearch\System\Configuration\TypoScriptConfiguration;
use WapplerSystems\Meilisearch\System\Records\Pages\PagesRepository;
use TYPO3\CMS\Backend\Utility\BackendUtility;
use TYPO3\CMS\Core\Utility\GeneralUtility;

/**
 * Base Clas for Typo3ManagedSite and LegacySite
 */
abstract class Site implements SiteInterface
{
    /**
     * @var TypoScriptConfiguration
     */
    protected $configuration;

    /**
     * Root page record.
     *
     * @var array
     */
    protected $rootPage = [];
    /**
     * @var string
     */
    protected $domain;

    /**
     * @var string
     */
    protected $siteHash;

    /**
     * @var PagesRepository
     */
    protected $pagesRepository;

    /**
     * @var int
     */
    protected $defaultLanguageId = 0;

    /**
     * @var int[] Available language ids
     */
    protected $availableLanguageIds = [];

    /**
     * Takes an pagerecord and checks whether the page is marked as root page.
     *
     * @param array $page pagerecord
     * @return bool true if the page is marked as root page, false otherwise
     * @todo: move to SiteUtility?
     */
    public static function isRootPage($page)
    {
        if ($page['is_siteroot']) {
            return true;
        }

        return false;
    }

    /**
     * Gets the site's root page ID (uid).
     *
     * @return int The site's root page ID.
     */
    public function getRootPageId()
    {
        return (int)$this->rootPage['uid'];
    }

    /**
     * Gets available language id's for this site
     *
     * @return int[] array or language id's
     */
    public function getAvailableLanguageIds(): array {
        return $this->availableLanguageIds;
    }

    /**
     * Gets the site's label. The label is build from the the site title and root
     * page ID (uid).
     *
     * @return string The site's label.
     */
    public function getLabel()
    {
        $rootlineTitles = [];
        $rootLine = BackendUtility::BEgetRootLine($this->rootPage['uid']);
        // Remove last
        array_pop($rootLine);
        $rootLine = array_reverse($rootLine);
        foreach ($rootLine as $rootLineItem) {
            $rootlineTitles[] = $rootLineItem['title'];
        }
        return implode(' - ', $rootlineTitles) . ', Root Page ID: ' . $this->rootPage['uid'];
    }

    /**
     * Gets the site's Solr TypoScript configuration (plugin.tx_meilisearch.*)
     *
     * @return  \WapplerSystems\Meilisearch\System\Configuration\TypoScriptConfiguration The Solr TypoScript configuration
     */
    public function getSolrConfiguration()
    {
        return $this->configuration;
    }

    /**
     * Gets the site's default language as configured in
     * config.sys_language_uid. If sys_language_uid is not set, 0 is assumed to
     * be the default.
     *
     * @return int The site's default language.
     */
    public function getDefaultLanguage()
    {
        return $this->defaultLanguageId;
    }

    /**
     * Generates a list of page IDs in this site. Attention, this includes
     * all page types! Deleted pages are not included.
     *
     * @param int|string $rootPageId Page ID from where to start collection sub pages
     * @param int $maxDepth Maximum depth to descend into the site tree
     * @return array Array of pages (IDs) in this site
     */
    public function getPages($rootPageId = 'SITE_ROOT', $maxDepth = 999)
    {
        $pageIds = [];
        if ($rootPageId === 'SITE_ROOT') {
            $rootPageId = (int)$this->rootPage['uid'];
            $pageIds[] = $rootPageId;
        }

        $configurationAwareRecordService = GeneralUtility::makeInstance(ConfigurationAwareRecordService::class);
        // Fetch configuration in order to be able to read initialPagesAdditionalWhereClause
        $solrConfiguration = $this->getSolrConfiguration();
        $indexQueueConfigurationName = $configurationAwareRecordService->getIndexingConfigurationName('pages', $this->rootPage['uid'], $solrConfiguration);
        if ($indexQueueConfigurationName === null) {
            return $pageIds;
        }
        $initialPagesAdditionalWhereClause = $solrConfiguration->getInitialPagesAdditionalWhereClause($indexQueueConfigurationName);
        return array_merge($pageIds, $this->pagesRepository->findAllSubPageIdsByRootPage($rootPageId, $maxDepth, $initialPagesAdditionalWhereClause));
    }


    /**
     * Generates the site's unique Site Hash.
     *
     * The Site Hash is build from the site's main domain, the system encryption
     * key, and the extension "tx_meilisearch". These components are concatenated and
     * sha1-hashed.
     *
     * @return string Site Hash.
     */
    public function getSiteHash()
    {
        return $this->siteHash;
    }

    /**
     * Gets the site's main domain. More specifically the first domain record in
     * the site tree.
     *
     * @return string The site's main domain.
     */
    public function getDomain()
    {
        return $this->domain;
    }

    /**
     * Gets the site's root page.
     *
     * @return array The site's root page.
     */
    public function getRootPage()
    {
        return $this->rootPage;
    }

    /**
     * Gets the site's root page's title.
     *
     * @return string The site's root page's title
     */
    public function getTitle()
    {
        return $this->rootPage['title'];
    }

    /**
     * Retrieves the rootPageIds as an array from a set of sites.
     *
     * @param array $sites
     * @return array
     * @todo: move to SiteUtility?
     */
    public static function getRootPageIdsFromSites(array $sites): array
    {
        $rootPageIds = [];
        foreach ($sites as $site) {
            $rootPageIds[] = (int)$site->getRootPageId();
        }

        return $rootPageIds;
    }

    /**
     * @return array
     * @throws NoSolrConnectionFoundException
     */
    public function getAllSolrConnectionConfigurations(): array {
        $configs = [];
        foreach ($this->getAvailableLanguageIds() as $languageId) {
            try {
                $configs[$languageId] = $this->getSolrConnectionConfiguration($languageId);
            } catch (NoSolrConnectionFoundException $e) {}
        }
        return $configs;
    }

    public function isEnabled(): bool
    {
        return !empty($this->getAllSolrConnectionConfigurations());
    }

    /**
     * @param int $languageId
     * @return array
     */
    abstract function getSolrConnectionConfiguration(int $language = 0): array;
}