<?php
/**
* @package		Komento
* @copyright	Copyright (C) Stack Ideas Sdn Bhd. All rights reserved.
* @license		GNU/GPL, see LICENSE.php
* Komento is free software. This version may have been modified pursuant
* to the GNU General Public License, and as distributed it includes or
* is derivative of works licensed under the GNU General Public License or
* other free or open source software licenses.
* See COPYRIGHT.php for copyright notices and details.
*/
defined('_JEXEC') or die('Unauthorized Access');

require_once(__DIR__ . '/abstract.php');

class KomentoComk2 extends KomentoExtension
{
	public $_item;
	public $_map = [
		'id' => 'id',
		'title' => 'title',
		'hits' => 'hits',
		'created_by' => 'created_by',
		'catid' => 'catid',
		'state' => 'published'
		];

	private $_currentTrigger = '';

	public function __construct($component)
	{
		$this->addFile(JPATH_ROOT . '/components/com_k2/helpers/route.php');

		if (!class_exists('K2HelperPermissions')) {
			$this->addFile(JPATH_ROOT . '/components/com_k2/helpers/permissions.php');
		}

		parent::__construct($component);
	}

	public function load($cid)
	{
		static $instances = [];

		if (!isset($instances[$cid])) {
			$db	= KT::db();
			$query	= 'SELECT a.*, c.`alias` AS category_alias'
					. ' FROM ' . $db->nameQuote('#__k2_items') . ' AS a'
					. ' LEFT JOIN ' . $db->nameQuote('#__k2_categories')  . ' AS c ON c.`id` = a.`catid`'
					. ' WHERE a.`id`' . '=' . $db->quote($cid);

			$db->setQuery($query);

			if (!$this->_item = $db->loadObject()) {
				return $this->onLoadArticleError($cid);
			}

			$instances[$cid] = $this->_item;
		}

		$this->_item = $instances[$cid];

		return $this;
	}

	public function getContentIds($categories = '')
	{
		$db	= KT::db();
		$query = '';

		if (empty($categories)) {
			$query = 'SELECT `id` FROM ' . $db->nameQuote('#__k2_items') . ' ORDER BY `id`';
		} else {
			if (is_array($categories)) {
				$categories = implode(',', $categories);
			}

			$query = 'SELECT `id` FROM ' . $db->nameQuote('#__k2_items') . ' WHERE `catid` IN (' . $categories . ') ORDER BY `id`';
		}

		$db->setQuery($query);
		return $db->loadResultArray();
	}

	public function getCategories()
	{
		$db	= KT::db();
		$query	= 'SELECT a.`id`, a.`name` AS title, a.`parent` AS parent_id, a.`name`, a.`parent`'
				. ' FROM `#__k2_categories` AS a'
				. ' WHERE a.`trash` = 0'
				. ' ORDER BY a.`ordering`';
		$db->setQuery($query);
		$categories	= $db->loadObjectList();

		$children = [];

		foreach ($categories as $row) {
			$pt = $row->parent_id;
			$list = @$children[$pt] ? $children[$pt] : [];
			$list[] = $row;
			$children[$pt] = $list;
		}

		$categories	= JHTML::_('menu.treerecurse', 0, '', [], $children, 9999, 0, 0);

		return $categories;
	}

	public function isListingView()
	{
		$view = $this->input->get('view');

		return ($this->_currentTrigger === 'onK2CommentsCounter' && ($view === 'latest' || $view === 'itemlist')) ? true : false;
	}

	public function isEntryView()
	{
		return ($this->_currentTrigger === 'onK2CommentsBlock') ? true : false;
	}

	public function onExecute(&$article, $html, $view, $options = [])
	{

		$view = $this->input->get('view');

		if ($options['trigger'] === 'onK2CommentsCounter' && ($view === 'latest' || $view === 'itemlist')) {
			// Try to integrate with K2's comment counter
			$model = KT::model('comments');
			$count = $model->getCount($this->component, $this->getContentId());
			$article->numOfComments = $count;

			return $html;
		}

		if ($options['trigger'] === 'onK2CommentsBlock') {
			$model = KT::model('comments');
			$count = $model->getCount($this->component, $this->getContentId());
			$article->numOfComments = $count;

			return $html;
		}
	}

	private function _getItemId()
	{
		$app = JFactory::getApplication();
		$menus = $app->getMenu('site');
		$component = JComponentHelper::getComponent('com_k2');

		if (K2_JVERSION === '15') {
			$items = $menus->getItems('componentid', $component->id);
		} else {
			$items = $menus->getItems('component_id', $component->id);
		}

		if (count($items) === 1) {
			return '&Itemid=' . $items[0]->id;
		}

		$match = null;

		foreach ($items as $item) {
			if ((@$item->query['task'] === 'category') && (@$item->query['id'] === $this->_item->catid)) {
				$match = $item;
			} else {
				if (!isset($item->K2Categories)) {
					if (K2_JVERSION === '15') {
						$menuparams = explode("\n", $item->params);
						foreach ($menuparams as $param) {
							if (strpos($param, 'categories=') === 0) {
								$array = explode('categories=', $param);
								$item->K2Categories = explode('|', $array[1]);
							}
						}
					} else {
						$menuparams = json_decode($item->params);
						$item->K2Categories = isset($menuparams->categories)? $menuparams->categories: array();
					}
				}
				
				if (isset($item->K2Categories) && is_array($item->K2Categories)) {
					foreach ($item->K2Categories as $catid)	{
						if ((@$item->query['view'] === 'itemlist') && (@$item->query['task'] === '') && (@(int)$catid === $item->id)) {
							$match = $item;
							break;
						}
					}
				}
			}
		}

		if ($match) {
			return '&Itemid=' . $item->id;
		} else {
			return '';
		}
	}

	public function getEventTrigger()
	{
		return ['onK2CommentsCounter', 'onK2CommentsBlock', 'onK2BeforeDisplayContent'];
	}

	public function getContext()
	{
		return ['k2block', 'k2counter'];
	}

	public function getAuthorName()
	{
		return $this->_item->created_by_alias ? $this->_item->created_by_alias : $this->_item->author->name;
	}

	public function getCommentAnchorId()
	{
		return 'itemCommentsAnchor';
	}

	public function onBeforeLoad($eventTrigger, $context, &$article, &$params, &$page, &$options)
	{
		if (!$params instanceof JRegistry) {
			return false;
		}

		$this->_currentTrigger = $eventTrigger;

		return true;
	}

	public function onParameterDisabled($eventTrigger, $context, &$article, &$params, &$page, &$options)
	{
		$params->set('comments', 0);
		return false;
	}

	public function processParameter($context)
	{
		$view = $this->input->get('view');
		
		// To fix issue with {KomentoDisable} appearing on listing #424
		if ($context === 'k2counter' && $view === 'itemlist') {
			return true;
		}

		if ($context === 'k2counter' && !$this->isListingView()) {
			return false;
		}
		
		return true;
	}

	public function getContentPermalink()
	{
		$link = '';

		if (JFactory::getApplication()->isSite()) {
			$link = K2HelperRoute::getItemRoute($this->_item->id.':'.urlencode($this->_item->alias), $this->_item->catid.':'.urlencode($this->_item->category_alias));
			$link = urldecode(JRoute::_($link));
		} else {
			$link = 'index.php?option=com_k2&view=item&id=' . $this->_item->id . $this->_getItemId();
		}

		$link = $this->prepareLink($link);

		return $link;
	}
}