<?php
namespace wcf\acp\page;
use wcf\data\label\group\LabelGroupList;
use wcf\data\language\item\LanguageItemList;
use wcf\page\SortablePage;
use wcf\system\language\LanguageFactory;
use wcf\system\request\LinkHandler;
use wcf\system\WCF;
use wcf\util\HeaderUtil;
use wcf\util\StringUtil;

/**
 * Lists available label groups.
 * 
 * @author	Alexander Ebert
 * @copyright	2001-2019 WoltLab GmbH
 * @license	GNU Lesser General Public License <http://opensource.org/licenses/lgpl-license.php>
 * @package	WoltLabSuite\Core\Acp\Page
 * 
 * @property	LabelGroupList		$objectList
 */
class LabelGroupListPage extends SortablePage {
	/**
	 * @inheritDoc
	 */
	public $activeMenuItem = 'wcf.acp.menu.link.label.group.list';
	
	/**
	 * @inheritDoc
	 */
	public $defaultSortField = 'showOrder';
	
	/**
	 * @inheritDoc
	 */
	public $itemsPerPage = 50;
	
	/**
	 * @inheritDoc
	 */
	public $validSortFields = ['groupID', 'groupName', 'groupDescription', 'showOrder', 'labels'];
	
	/**
	 * @inheritDoc
	 */
	public $neededPermissions = ['admin.content.label.canManageLabel'];
	
	/**
	 * @inheritDoc
	 */
	public $objectListClassName = LabelGroupList::class;
	
	/**
	 * @var string
	 */
	public $groupName = '';
	
	/**
	 * @var string
	 */
	public $groupDescription = '';
	
	/**
	 * @inheritDoc
	 */
	public function readParameters() {
		parent::readParameters();
		
		if (!empty($_POST)) {
			$parameters = [];
			if (!empty($_POST['groupName'])) $parameters['groupName'] = StringUtil::trim($_POST['groupName']);
			if (!empty($_POST['groupDescription'])) $parameters['groupDescription'] = StringUtil::trim($_POST['groupDescription']);
			
			if (!empty($parameters)) {
				HeaderUtil::redirect(LinkHandler::getInstance()->getLink('LabelGroupList', $parameters));
				exit;
			}
		}
		
		if (isset($_REQUEST['groupName'])) $this->groupName = StringUtil::trim($_REQUEST['groupName']);
		if (isset($_REQUEST['groupDescription'])) $this->groupDescription = StringUtil::trim($_REQUEST['groupDescription']);
	}
	
	/**
	 * @inheritDoc
	 */
	protected function initObjectList() {
		parent::initObjectList();
		
		$this->objectList->sqlSelects .= '(SELECT COUNT(*) FROM wcf'.WCF_N.'_label WHERE groupID = label_group.groupID) AS labels';
		
		if ($this->groupName) {
			$languageItemList = new LanguageItemList();
			$languageItemList->getConditionBuilder()->add('languageCategoryID = ?', [LanguageFactory::getInstance()->getCategory('wcf.acp.label')->languageCategoryID]);
			$languageItemList->getConditionBuilder()->add('languageID = ?', [WCF::getLanguage()->languageID]);
			$languageItemList->getConditionBuilder()->add('languageItem LIKE ?', ['wcf.acp.label.group%']);
			$languageItemList->getConditionBuilder()->add('languageItemValue LIKE ?', ['%'.addcslashes($this->groupName, '_%').'%']);
			$languageItemList->readObjects();
			
			$labelIDs = [];
			foreach ($languageItemList as $languageItem) {
				$labelIDs[] = str_replace('wcf.acp.label.group', '', $languageItem->languageItem);
			}
			
			if (!empty($labelIDs)) {
				$this->objectList->getConditionBuilder()->add('(groupName LIKE ? OR groupID IN (?))', ['%'.addcslashes($this->groupName, '_%').'%', $labelIDs]);
			}
			else {
				$this->objectList->getConditionBuilder()->add('groupName LIKE ?', ['%'.addcslashes($this->groupName, '_%').'%']);
			}
		}
		
		if ($this->groupDescription) {
			$this->objectList->getConditionBuilder()->add('label_group.groupDescription LIKE ?', ['%'.addcslashes($this->groupDescription, '_%').'%']);
		}
	}
		
	/**
	 * @inheritDoc
	 */
	public function assignVariables() {
		parent::assignVariables();
		
		WCF::getTPL()->assign([
			'groupName' => $this->groupName,
			'groupDescription' => $this->groupDescription,
		]);
	}
}