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

/**
 * Lists available labels
 * 
 * @author	Alexander Ebert
 * @copyright	2001-2018 WoltLab GmbH
 * @license	GNU Lesser General Public License <http://opensource.org/licenses/lgpl-license.php>
 * @package	WoltLabSuite\Core\Acp\Page
 * 
 * @property	LabelList	$objectList
 */
class LabelListPage extends SortablePage {
	/**
	 * @inheritDoc
	 */
	public $activeMenuItem = 'wcf.acp.menu.link.label.list';
	
	/**
	 * @inheritDoc
	 */
	public $defaultSortField = 'label';
	
	/**
	 * @inheritDoc
	 */
	public $validSortFields = ['labelID', 'label', 'groupName', 'showOrder'];
	
	/**
	 * @inheritDoc
	 */
	public $neededPermissions = ['admin.content.label.canManageLabel'];
	
	/**
	 * @inheritDoc
	 */
	public $objectListClassName = LabelList::class;
	
	/**
	 * filter for css class name
	 * @var	string
	 */
	public $cssClassName = '';
	
	/**
	 * if of the label group to which the displayed labels belong
	 * @var	integer
	 */
	public $groupID = 0;
	
	/**
	 * filter for label name
	 * @var	string
	 */
	public $label = '';
	
	/**
	 * label group to which the displayed labels belong
	 * @var	LabelGroup
	 */
	public $labelGroup;
	
	/**
	 * list with available label groups
	 * @var	LabelGroupList
	 */
	public $labelGroupList;
	
	/**
	 * @inheritDoc
	 */
	public function assignVariables() {
		parent::assignVariables();
		
		WCF::getTPL()->assign([
			'cssClassName' => $this->cssClassName,
			'groupID' => $this->groupID,
			'labelSearch' => $this->label,
			'labelGroup' => $this->labelGroup,
			'labelGroupList' => $this->labelGroupList
		]);
	}
	
	/**
	 * @inheritDoc
	 */
	protected function initObjectList() {
		parent::initObjectList();
		
		$this->objectList->sqlSelects = "label_group.groupName, label_group.groupDescription";
		$this->objectList->sqlJoins = "LEFT JOIN wcf".WCF_N."_label_group label_group ON (label_group.groupID = label.groupID)";
		if ($this->labelGroup) {
			$this->objectList->getConditionBuilder()->add('label.groupID = ?', [$this->labelGroup->groupID]);
			
			// Ramp up the limit to display all labels at once for easier
			// drag & drop sorting. This isn't exactly infinite, but if
			// you have a label group with more than 1k labels, being able
			// to sort them is the least of your problems.
			$this->itemsPerPage = 1000;
		}
		if ($this->cssClassName) {
			$this->objectList->getConditionBuilder()->add('label.cssClassName LIKE ?', ['%'.addcslashes($this->cssClassName, '_%').'%']);
		}
		
		if ($this->label) {
			$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.label%']);
			$languageItemList->getConditionBuilder()->add('languageItemValue LIKE ?', ['%'.addcslashes($this->label, '_%').'%']);
			$languageItemList->readObjects();
			
			$labelIDs = [];
			foreach ($languageItemList as $languageItem) {
				$labelIDs[] = str_replace('wcf.acp.label.label', '', $languageItem->languageItem);
			}
			
			if (!empty($labelIDs)) {
				$this->objectList->getConditionBuilder()->add('(label LIKE ? OR labelID IN (?))', ['%'.addcslashes($this->label, '_%').'%', $labelIDs]);
			}
			else {
				$this->objectList->getConditionBuilder()->add('label LIKE ?', ['%'.addcslashes($this->label, '_%').'%']);
			}
		}
	}
	
	/**
	 * @inheritDoc
	 */
	public function readData() {
		parent::readData();
		
		$this->labelGroupList = new LabelGroupList();
		$this->labelGroupList->readObjects();
	}
	
	/**
	 * @inheritDoc
	 */
	public function readParameters() {
		parent::readParameters();
		
		if (!empty($_POST)) {
			$parameters = [];
			if (!empty($_POST['groupID'])) $parameters['id'] = intval($_POST['groupID']);
			if (!empty($_POST['label'])) $parameters['label'] = StringUtil::trim($_POST['label']);
			if (!empty($_POST['cssClassName'])) $parameters['cssClassName'] = StringUtil::trim($_POST['cssClassName']);
			
			if (!empty($parameters)) {
				HeaderUtil::redirect(LinkHandler::getInstance()->getLink('LabelList', $parameters));
				exit;
			}
		}
		
		if (isset($_REQUEST['id'])) $this->groupID = intval($_REQUEST['id']);
		if (isset($_REQUEST['label'])) $this->label = StringUtil::trim($_REQUEST['label']);
		if (isset($_REQUEST['cssClassName'])) $this->cssClassName = StringUtil::trim($_REQUEST['cssClassName']);
		
		if ($this->groupID) {
			$this->labelGroup = new LabelGroup($this->groupID);
			if (!$this->labelGroup->groupID) {
				throw new IllegalLinkException();
			}
			
			$this->defaultSortField = 'showOrder';
		}
	}
}