<?php
/**
 * @package    JLSitemap - Content Plugin
 * @version    1.12.0
 * @author     Joomline - joomline.ru
 * @copyright  Copyright (c) 2010 - 2022 Joomline. All rights reserved.
 * @license    GNU/GPL license: http://www.gnu.org/copyleft/gpl.html
 * @link       https://joomline.ru/
 */

defined('_JEXEC') or die;

use Joomla\CMS\Factory;
use Joomla\CMS\Language\Text;
use Joomla\CMS\Plugin\CMSPlugin;
use Joomla\Registry\Registry;
use Joomla\CMS\Uri\Uri;

class plgJLSitemapContent extends CMSPlugin
{
	/**
	 * Affects constructor behavior. If true, language files will be loaded automatically.
	 *
	 * @var  boolean
	 *
	 * @since  0.0.1
	 */
	protected $autoloadLanguage = true;

	/**
	 * Method to get urls array
	 *
	 * @param   array     $urls    Urls array
	 * @param   Registry  $config  Component config
	 *
	 * @return  array Urls array with attributes
	 *
	 * @since  0.0.1
	 */
	public function onGetUrls(&$urls, $config)
	{
		$categoryExcludeStates = array(
			0  => Text::_('PLG_JLSITEMAP_CONTENT_EXCLUDE_CATEGORY_UNPUBLISH'),
			-2 => Text::_('PLG_JLSITEMAP_CONTENT_EXCLUDE_CATEGORY_TRASH'),
			2  => Text::_('PLG_JLSITEMAP_CONTENT_EXCLUDE_CATEGORY_ARCHIVE'));

		$articleExcludeStates = array(
			0  => Text::_('PLG_JLSITEMAP_CONTENT_EXCLUDE_ARTICLE_UNPUBLISH'),
			-2 => Text::_('PLG_JLSITEMAP_CONTENT_EXCLUDE_ARTICLE_TRASH'),
			2  => Text::_('PLG_JLSITEMAP_CONTENT_EXCLUDE_ARTICLE_ARCHIVE'));

		$multilanguage = $config->get('multilanguage');

		// Categories
		if ($this->params->get('categories_enable', false))
		{
			$db    = Factory::getDbo();
			$query = $db->getQuery(true)
				->select(array('c.id', 'c.title', 'c.published', 'c.access', 'c.metadata', 'c.language', 'MAX(a.modified) as modified', 'c.params'))
				->from($db->quoteName('#__categories', 'c'))
				->join('LEFT', '#__content AS a ON a.catid = c.id')
				->where($db->quoteName('c.extension') . ' = ' . $db->quote('com_content'))
				->group('c.id')
				->order($db->escape('c.lft') . ' ' . $db->escape('asc'));

			// Join over associations
			if ($multilanguage)
			{
				$query->select('assoc.key as association')
					->join('LEFT', '#__associations AS assoc ON assoc.id = c.id AND assoc.context = ' .
						$db->quote('com_categories.item'));
			}

			$db->setQuery($query);
			$rows = $db->loadObjectList();

			$nullDate   = $db->getNullDate();
			$changefreq = $this->params->get('categories_changefreq', $config->get('changefreq', 'weekly'));
			$priority   = $this->params->get('categories_priority', $config->get('priority', '0.5'));

			$categories_images_enable = $this->params->get('categories_images_enable', 1);

			// Add categories to arrays
			$categories = array();
			$alternates = array();
			foreach ($rows as $row)
			{
				// Prepare loc attribute
				$loc = 'index.php?option=com_content&view=category&id=' . $row->id;
				if (!empty($row->language) && $row->language !== '*' && $multilanguage)
				{
					$loc .= '&lang=' . $row->language;
				}

				// Prepare exclude attribute
				$metadata = new Registry($row->metadata);
				$exclude  = array();
				if (preg_match('/noindex/', $metadata->get('robots', $config->get('siteRobots'))))
				{
					$exclude[] = array('type' => Text::_('PLG_JLSITEMAP_CONTENT_EXCLUDE_CATEGORY'),
					                   'msg'  => Text::_('PLG_JLSITEMAP_CONTENT_EXCLUDE_CATEGORY_ROBOTS'));
				}

				if (isset($categoryExcludeStates[$row->published]))
				{
					$exclude[] = array('type' => Text::_('PLG_JLSITEMAP_CONTENT_EXCLUDE_CATEGORY'),
					                   'msg'  => $categoryExcludeStates[$row->published]);
				}

				if (!in_array($row->access, $config->get('guestAccess', array())))
				{
					$exclude[] = array('type' => Text::_('PLG_JLSITEMAP_CONTENT_EXCLUDE_CATEGORY'),
					                   'msg'  => Text::_('PLG_JLSITEMAP_CONTENT_EXCLUDE_CATEGORY_ACCESS'));
				}

				// Prepare lastmod attribute
				$lastmod = (!empty($row->modified) && $row->modified != $nullDate) ? $row->modified : false;

				// Prepare category object
				$category             = new stdClass();
				$category->type       = Text::_('PLG_JLSITEMAP_CONTENT_TYPES_CATEGORY');
				$category->title      = $row->title;
				$category->loc        = $loc;
				$category->changefreq = $changefreq;
				$category->priority   = $priority;
				$category->lastmod    = $lastmod;
				$category->exclude    = (!empty($exclude)) ? $exclude : false;
				$category->alternates = ($multilanguage && !empty($row->association)) ? $row->association : false;

				if ($categories_images_enable)
				{
					$category_params = json_decode($row->params);
					if (is_object($category_params) && !empty($category_params->image))
					{
						$category->images = array(Uri::root() . $category_params->image);
					}
				}

				// Add category to array
				$categories[] = $category;

				// Add category to alternates array
				if ($multilanguage && !empty($row->association) && empty($exclude))
				{
					if (!isset($alternates[$row->association]))
					{
						$alternates[$row->association] = array();
					}

					$alternates[$row->association][$row->language] = $loc;
				};
			}

			// Add alternates to categories
			if (!empty($alternates))
			{
				foreach ($categories as &$category)
				{
					$category->alternates = ($category->alternates) ? $alternates[$category->alternates] : false;
				}
			}

			// Add categories to urls
			$urls = array_merge($urls, $categories);
		}

		// Articles
		if ($this->params->get('articles_enable', false))
		{
			$db    = Factory::getDbo();
			$query = $db->getQuery(true)
				->select(array('a.id', 'a.title', 'a.alias', 'a.state', 'a.modified', 'a.publish_up', 'a.publish_down', 'a.access',
					'a.metadata', 'a.language', 'c.id as category_id', 'c.published as category_published',
					'c.access as category_access', 'a.images'))
				->from($db->quoteName('#__content', 'a'))
				->join('LEFT', '#__categories AS c ON c.id = a.catid')
				->group('a.id')
				->order($db->escape('a.ordering') . ' ' . $db->escape('asc'));

			// Join over associations
			if ($multilanguage)
			{
				$query->select('assoc.key as association')
					->join('LEFT', '#__associations AS assoc ON assoc.id = a.id AND assoc.context = ' .
						$db->quote('com_content.item'));
			}

			$db->setQuery($query);
			$rows = $db->loadObjectList();

			$nullDate   = $db->getNullDate();
			$nowDate    = Factory::getDate()->toUnix();
			$changefreq = $this->params->get('articles_changefreq', $config->get('changefreq', 'weekly'));
			$priority   = $this->params->get('articles_priority', $config->get('priority', '0.5'));

			$articles_images_enable = $this->params->get('articles_images_enable', 1);

			// Add articles to urls arrays
			$articles   = array();
			$alternates = array();
			foreach ($rows as $row)
			{
				// Prepare loc attribute
				$slug = ($row->alias) ? ($row->id . ':' . $row->alias) : $row->id;
				$loc  = 'index.php?option=com_content&view=article&id=' . $slug . '&catid=' . $row->category_id;
				if (!empty($row->language) && $row->language !== '*' && $multilanguage)
				{
					$loc .= '&lang=' . $row->language;
				}

				// Prepare exclude attribute
				$metadata = new Registry($row->metadata);
				$exclude  = array();
				if (preg_match('/noindex/', $metadata->get('robots', $config->get('siteRobots'))))
				{
					$exclude[] = array('type' => Text::_('PLG_JLSITEMAP_CONTENT_EXCLUDE_ARTICLE'),
					                   'msg'  => Text::_('PLG_JLSITEMAP_CONTENT_EXCLUDE_ARTICLE_ROBOTS'));
				}

				if (isset($articleExcludeStates[$row->state]))
				{
					$exclude[] = array('type' => Text::_('PLG_JLSITEMAP_CONTENT_EXCLUDE_ARTICLE'),
					                   'msg'  => $articleExcludeStates[$row->state]);
				}

				if ($row->publish_up == $nullDate || Factory::getDate($row->publish_up)->toUnix() > $nowDate)
				{
					$exclude[] = array('type' => Text::_('PLG_JLSITEMAP_CONTENT_EXCLUDE_ARTICLE'),
					                   'msg'  => Text::_('PLG_JLSITEMAP_CONTENT_EXCLUDE_ARTICLE_PUBLISH_UP'));
				}

				if ($row->publish_down != $nullDate && Factory::getDate($row->publish_down)->toUnix() < $nowDate)
				{
					$exclude[] = array('type' => Text::_('PLG_JLSITEMAP_CONTENT_EXCLUDE_ARTICLE'),
					                   'msg'  => Text::_('PLG_JLSITEMAP_CONTENT_EXCLUDE_ARTICLE_PUBLISH_DOWN'));
				}

				if (!in_array($row->access, $config->get('guestAccess', array())))
				{
					$exclude[] = array('type' => Text::_('PLG_JLSITEMAP_CONTENT_EXCLUDE_ARTICLE'),
					                   'msg'  => Text::_('PLG_JLSITEMAP_CONTENT_EXCLUDE_ARTICLE_ACCESS'));
				}

				if (isset($categoryExcludeStates[$row->category_published]))
				{
					$exclude[] = array('type' => Text::_('PLG_JLSITEMAP_CONTENT_EXCLUDE_CATEGORY'),
					                   'msg'  => $categoryExcludeStates[$row->category_published]);
				}

				if (!in_array($row->category_access, $config->get('guestAccess', array())))
				{
					$exclude[] = array('type' => Text::_('PLG_JLSITEMAP_CONTENT_EXCLUDE_CATEGORY'),
					                   'msg'  => Text::_('PLG_JLSITEMAP_CONTENT_EXCLUDE_CATEGORY_ACCESS'));
				}

				// Prepare lastmod attribute
				$lastmod = (!empty($row->modified) && $row->modified != $nullDate) ? $row->modified : false;

				// Prepare article object
				$article             = new stdClass();
				$article->type       = Text::_('PLG_JLSITEMAP_CONTENT_TYPES_ARTICLE');
				$article->title      = $row->title;
				$article->loc        = $loc;
				$article->changefreq = $changefreq;
				$article->priority   = $priority;
				$article->lastmod    = $lastmod;
				$article->exclude    = (!empty($exclude)) ? $exclude : false;
				$article->alternates = ($multilanguage && !empty($row->association)) ? $row->association : false;

				if ($articles_images_enable)
				{
					$article_images = json_decode($row->images);
					if (is_object($article_images) && !empty($article_images->image_fulltext))
					{
						$article->images = array(Uri::root() . $article_images->image_fulltext); 
					}
				}

				// Add article to array
				$articles[] = $article;

				// Add article to alternates array
				if ($multilanguage && !empty($row->association) && empty($exclude))
				{
					if (!isset($alternates[$row->association]))
					{
						$alternates[$row->association] = array();
					}

					$alternates[$row->association][$row->language] = $loc;
				};
			}

			// Add alternates to articles
			if (!empty($alternates))
			{
				foreach ($articles as &$article)
				{
					$article->alternates = ($article->alternates) ? $alternates[$article->alternates] : false;
				}
			}

			// Add articles to urls
			$urls = array_merge($urls, $articles);
		}

		return $urls;
	}
}