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Filename : helper.php
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<?php
/**
 * @version    2.8.x
 * @package    K2
 * @author     JoomlaWorks http://www.joomlaworks.net
 * @copyright  Copyright (c) 2006 - 2017 JoomlaWorks Ltd. All rights reserved.
 * @license    GNU/GPL license: http://www.gnu.org/copyleft/gpl.html
 */

// no direct access
defined('_JEXEC') or die;

require_once(JPATH_SITE.'/components/com_k2/helpers/route.php');
require_once(JPATH_SITE.'/components/com_k2/helpers/utilities.php');

class modK2ContentHelper
{

	public static function getItems(&$params, $format = 'html')
	{

		jimport('joomla.filesystem.file');
		$application = JFactory::getApplication();
		$limit = $params->get('itemCount', 5);
		$cid = $params->get('category_id', NULL);
		$ordering = $params->get('itemsOrdering', '');
		$componentParams = JComponentHelper::getParams('com_k2');
		$limitstart = JRequest::getInt('limitstart');

		$user = JFactory::getUser();
		$aid = $user->get('aid');
		$db = JFactory::getDbo();

		$jnow = JFactory::getDate();
		$now = K2_JVERSION == '15' ? $jnow->toMySQL() : $jnow->toSql();
		$nullDate = $db->getNullDate();

		if ($params->get('source') == 'specific')
		{

			$value = $params->get('items');
			$current = array();
			if (is_string($value) && !empty($value))
				$current[] = $value;
			if (is_array($value))
				$current = $value;

			$items = array();

			foreach ($current as $id)
			{

				$query = "SELECT i.*, c.name AS categoryname,c.id AS categoryid, c.alias AS categoryalias, c.params AS categoryparams 
				FROM #__k2_items as i 
				LEFT JOIN #__k2_categories c ON c.id = i.catid 
				WHERE i.published = 1 ";
				if (K2_JVERSION != '15')
				{
					$query .= " AND i.access IN(".implode(',', $user->getAuthorisedViewLevels()).") ";
				}
				else
				{
					$query .= " AND i.access<={$aid} ";
				}
				$query .= " AND i.trash = 0 AND c.published = 1 ";
				if (K2_JVERSION != '15')
				{
					$query .= " AND c.access IN(".implode(',', $user->getAuthorisedViewLevels()).") ";
				}
				else
				{
					$query .= " AND c.access<={$aid} ";
				}
				$query .= " AND c.trash = 0 
				AND ( i.publish_up = ".$db->Quote($nullDate)." OR i.publish_up <= ".$db->Quote($now)." ) 
				AND ( i.publish_down = ".$db->Quote($nullDate)." OR i.publish_down >= ".$db->Quote($now)." ) 
				AND i.id={$id}";
				if (K2_JVERSION != '15')
				{
					if ($application->getLanguageFilter())
					{
						$languageTag = JFactory::getLanguage()->getTag();
						$query .= " AND c.language IN (".$db->Quote($languageTag).", ".$db->Quote('*').") AND i.language IN (".$db->Quote($languageTag).", ".$db->Quote('*').")";
					}
				}
				$db->setQuery($query);
				$item = $db->loadObject();
				if ($item)
					$items[] = $item;

			}
		}

		else
		{
			$query = "SELECT DISTINCT i.*,";

			if ($ordering == 'modified')
			{
				$query .= " CASE WHEN i.modified = 0 THEN i.created ELSE i.modified END as lastChanged,";
			}

			$query .= "c.name AS categoryname,c.id AS categoryid, c.alias AS categoryalias, c.params AS categoryparams";

			if ($ordering == 'best')
				$query .= ", (r.rating_sum/r.rating_count) AS rating";

			if ($ordering == 'comments')
				$query .= ", COUNT(comments.id) AS numOfComments";

			$query .= " FROM #__k2_items as i RIGHT JOIN #__k2_categories c ON c.id = i.catid";

			if ($ordering == 'best')
				$query .= " LEFT JOIN #__k2_rating r ON r.itemID = i.id";

			if ($ordering == 'comments')
				$query .= " LEFT JOIN #__k2_comments comments ON comments.itemID = i.id";
			
			$tagsFilter = $params->get('tags');
			if($tagsFilter && is_array($tagsFilter) && count($tagsFilter))
			{
				$query .= " INNER JOIN #__k2_tags_xref tags_xref ON tags_xref.itemID = i.id";
			}

			if (K2_JVERSION != '15')
			{
				$query .= " WHERE i.published = 1 AND i.access IN(".implode(',', $user->getAuthorisedViewLevels()).") AND i.trash = 0 AND c.published = 1 AND c.access IN(".implode(',', $user->getAuthorisedViewLevels()).")  AND c.trash = 0";
			}
			else
			{
				$query .= " WHERE i.published = 1 AND i.access <= {$aid} AND i.trash = 0 AND c.published = 1 AND c.access <= {$aid} AND c.trash = 0";
			}

			$query .= " AND ( i.publish_up = ".$db->Quote($nullDate)." OR i.publish_up <= ".$db->Quote($now)." )";
			$query .= " AND ( i.publish_down = ".$db->Quote($nullDate)." OR i.publish_down >= ".$db->Quote($now)." )";

			if ($params->get('catfilter'))
			{
				if (!is_null($cid))
				{
					if (is_array($cid))
					{
						if ($params->get('getChildren'))
						{
							$itemListModel = K2Model::getInstance('Itemlist', 'K2Model');
							$categories = $itemListModel->getCategoryTree($cid);
							$sql = @implode(',', $categories);
							$query .= " AND i.catid IN ({$sql})";

						}
						else
						{
							JArrayHelper::toInteger($cid);
							$query .= " AND i.catid IN(".implode(',', $cid).")";
						}

					}
					else
					{
						if ($params->get('getChildren'))
						{
							$itemListModel = K2Model::getInstance('Itemlist', 'K2Model');
							$categories = $itemListModel->getCategoryTree($cid);
							$sql = @implode(',', $categories);
							$query .= " AND i.catid IN ({$sql})";
						}
						else
						{
							$query .= " AND i.catid=".(int)$cid;
						}

					}
				}
			}
			
			$tagsFilter = $params->get('tags');
			if($tagsFilter && is_array($tagsFilter) && count($tagsFilter))
			{
				$query .= " AND tags_xref.tagID IN(".implode(',', $tagsFilter).")";
			}
			
			$usersFilter = $params->get('users');
			if($usersFilter && is_array($usersFilter) && count($usersFilter))
			{
				$query .= " AND i.created_by IN(".implode(',', $usersFilter).") AND i.created_by_alias = ''";
			}

			if ($params->get('FeaturedItems') == '0')
				$query .= " AND i.featured != 1";

			if ($params->get('FeaturedItems') == '2')
				$query .= " AND i.featured = 1";

			if ($params->get('videosOnly'))
				$query .= " AND (i.video IS NOT NULL AND i.video!='')";

			if ($ordering == 'comments')
				$query .= " AND comments.published = 1";

			if (K2_JVERSION != '15')
			{
				if ($application->getLanguageFilter())
				{
					$languageTag = JFactory::getLanguage()->getTag();
					$query .= " AND c.language IN (".$db->Quote($languageTag).", ".$db->Quote('*').") AND i.language IN (".$db->Quote($languageTag).", ".$db->Quote('*').")";
				}
			}

			switch ($ordering)
			{

				case 'date' :
					$orderby = 'i.created ASC';
					break;

				case 'rdate' :
					$orderby = 'i.created DESC';
					break;

				case 'alpha' :
					$orderby = 'i.title';
					break;

				case 'ralpha' :
					$orderby = 'i.title DESC';
					break;

				case 'order' :
					if ($params->get('FeaturedItems') == '2')
						$orderby = 'i.featured_ordering';
					else
						$orderby = 'i.ordering';
					break;

				case 'rorder' :
					if ($params->get('FeaturedItems') == '2')
						$orderby = 'i.featured_ordering DESC';
					else
						$orderby = 'i.ordering DESC';
					break;

				case 'hits' :
					if ($params->get('popularityRange'))
					{
						$datenow = JFactory::getDate();
						$date = K2_JVERSION == '15' ? $datenow->toMySQL() : $datenow->toSql();
						$query .= " AND i.created > DATE_SUB('{$date}',INTERVAL ".$params->get('popularityRange')." DAY) ";
					}
					$orderby = 'i.hits DESC';
					break;

				case 'rand' :
					$orderby = 'RAND()';
					break;

				case 'best' :
					$orderby = 'rating DESC';
					break;

				case 'comments' :
					if ($params->get('popularityRange'))
					{
						$datenow = JFactory::getDate();
						$date = K2_JVERSION == '15' ? $datenow->toMySQL() : $datenow->toSql();
						$query .= " AND i.created > DATE_SUB('{$date}',INTERVAL ".$params->get('popularityRange')." DAY) ";
					}
					$query .= " GROUP BY i.id ";
					$orderby = 'numOfComments DESC';
					break;

				case 'modified' :
					$orderby = 'lastChanged DESC';
					break;

				case 'publishUp' :
					$orderby = 'i.publish_up DESC';
					break;

				default :
					$orderby = 'i.id DESC';
					break;
			}

			$query .= " ORDER BY ".$orderby;
			$db->setQuery($query, 0, $limit);
			$items = $db->loadObjectList();
		}

		$model = K2Model::getInstance('Item', 'K2Model');

		if (count($items))
		{

			foreach ($items as $item)
			{
				$item->event = new stdClass;

				//Clean title
				$item->title = JFilterOutput::ampReplace($item->title);

				//Images
				if ($params->get('itemImage'))
				{

					$date = JFactory::getDate($item->modified);
					$timestamp = '?t='.$date->toUnix();

					if (JFile::exists(JPATH_SITE.'/media/k2/items/cache/'.md5("Image".$item->id).'_XS.jpg'))
					{
						$item->imageXSmall = JURI::base(true).'/media/k2/items/cache/'.md5("Image".$item->id).'_XS.jpg';
						if ($componentParams->get('imageTimestamp'))
						{
							$item->imageXSmall .= $timestamp;
						}
					}

					if (JFile::exists(JPATH_SITE.'/media/k2/items/cache/'.md5("Image".$item->id).'_S.jpg'))
					{
						$item->imageSmall = JURI::base(true).'/media/k2/items/cache/'.md5("Image".$item->id).'_S.jpg';
						if ($componentParams->get('imageTimestamp'))
						{
							$item->imageSmall .= $timestamp;
						}
					}

					if (JFile::exists(JPATH_SITE.'/media/k2/items/cache/'.md5("Image".$item->id).'_M.jpg'))
					{
						$item->imageMedium = JURI::base(true).'/media/k2/items/cache/'.md5("Image".$item->id).'_M.jpg';
						if ($componentParams->get('imageTimestamp'))
						{
							$item->imageMedium .= $timestamp;
						}
					}

					if (JFile::exists(JPATH_SITE.'/media/k2/items/cache/'.md5("Image".$item->id).'_L.jpg'))
					{
						$item->imageLarge = JURI::base(true).'/media/k2/items/cache/'.md5("Image".$item->id).'_L.jpg';
						if ($componentParams->get('imageTimestamp'))
						{
							$item->imageLarge .= $timestamp;
						}
					}

					if (JFile::exists(JPATH_SITE.'/media/k2/items/cache/'.md5("Image".$item->id).'_XL.jpg'))
					{
						$item->imageXLarge = JURI::base(true).'/media/k2/items/cache/'.md5("Image".$item->id).'_XL.jpg';
						if ($componentParams->get('imageTimestamp'))
						{
							$item->imageXLarge .= $timestamp;
						}
					}

					if (JFile::exists(JPATH_SITE.'/media/k2/items/cache/'.md5("Image".$item->id).'_Generic.jpg'))
					{
						$item->imageGeneric = JURI::base(true).'/media/k2/items/cache/'.md5("Image".$item->id).'_Generic.jpg';
						if ($componentParams->get('imageTimestamp'))
						{
							$item->imageGeneric .= $timestamp;
						}
					}

					$image = 'image'.$params->get('itemImgSize', 'Small');
					if (isset($item->$image))
						$item->image = $item->$image;

				}

				//Read more link
				$item->link = urldecode(JRoute::_(K2HelperRoute::getItemRoute($item->id.':'.urlencode($item->alias), $item->catid.':'.urlencode($item->categoryalias))));

				//Tags
				if ($params->get('itemTags'))
				{
					$tags = $model->getItemTags($item->id);
					for ($i = 0; $i < sizeof($tags); $i++)
					{
						$tags[$i]->link = JRoute::_(K2HelperRoute::getTagRoute($tags[$i]->name));
					}
					$item->tags = $tags;
				}

				//Category link
				if ($params->get('itemCategory'))
					$item->categoryLink = urldecode(JRoute::_(K2HelperRoute::getCategoryRoute($item->catid.':'.urlencode($item->categoryalias))));

				//Extra fields
				if ($params->get('itemExtraFields'))
				{
					$item->extra_fields = $model->getItemExtraFields($item->extra_fields, $item);
				}

				//Comments counter
				if ($params->get('itemCommentsCounter'))
					$item->numOfComments = $model->countItemComments($item->id);

				//Attachments
				if ($params->get('itemAttachments'))
					$item->attachments = $model->getItemAttachments($item->id);

				//Import plugins
				if ($format != 'feed')
				{
					$dispatcher = JDispatcher::getInstance();
					JPluginHelper::importPlugin('content');
				}

				//Video
				if ($params->get('itemVideo') && $format != 'feed')
				{
					$params->set('vfolder', 'media/k2/videos');
					$params->set('afolder', 'media/k2/audio');
					$item->text = $item->video;
					if (K2_JVERSION == '15')
					{
						$dispatcher->trigger('onPrepareContent', array(&$item, &$params, $limitstart));
					}
					else
					{
						$dispatcher->trigger('onContentPrepare', array('mod_k2_content.', &$item, &$params, $limitstart));
					}
					$item->video = $item->text;
				}

				// Introtext
				$item->text = '';
				if ($params->get('itemIntroText'))
				{
					// Word limit
					if ($params->get('itemIntroTextWordLimit'))
					{
						$item->text .= K2HelperUtilities::wordLimit($item->introtext, $params->get('itemIntroTextWordLimit'));
					}
					else
					{
						$item->text .= $item->introtext;
					}
				}

				if ($format != 'feed')
				{

					$params->set('parsedInModule', 1);
					// for plugins to know when they are parsed inside this module

					$item->event = new stdClass;
					$item->event->BeforeDisplay = '';
					$item->event->AfterDisplay = '';
					$item->event->AfterDisplayTitle = '';
					$item->event->BeforeDisplayContent = '';
					$item->event->AfterDisplayContent = '';

					if ($params->get('JPlugins', 1))
					{
						//Plugins
						if (K2_JVERSION != '15')
						{

							$item->event->BeforeDisplay = '';
							$item->event->AfterDisplay = '';

							$dispatcher->trigger('onContentPrepare', array('mod_k2_content', &$item, &$params, $limitstart));

							$results = $dispatcher->trigger('onContentAfterTitle', array('mod_k2_content', &$item, &$params, $limitstart));
							$item->event->AfterDisplayTitle = trim(implode("\n", $results));

							$results = $dispatcher->trigger('onContentBeforeDisplay', array('mod_k2_content', &$item, &$params, $limitstart));
							$item->event->BeforeDisplayContent = trim(implode("\n", $results));

							$results = $dispatcher->trigger('onContentAfterDisplay', array('mod_k2_content', &$item, &$params, $limitstart));
							$item->event->AfterDisplayContent = trim(implode("\n", $results));
						}
						else
						{
							$results = $dispatcher->trigger('onBeforeDisplay', array(&$item, &$params, $limitstart));
							$item->event->BeforeDisplay = trim(implode("\n", $results));

							$results = $dispatcher->trigger('onAfterDisplay', array(&$item, &$params, $limitstart));
							$item->event->AfterDisplay = trim(implode("\n", $results));

							$results = $dispatcher->trigger('onAfterDisplayTitle', array(&$item, &$params, $limitstart));
							$item->event->AfterDisplayTitle = trim(implode("\n", $results));

							$results = $dispatcher->trigger('onBeforeDisplayContent', array(&$item, &$params, $limitstart));
							$item->event->BeforeDisplayContent = trim(implode("\n", $results));

							$results = $dispatcher->trigger('onAfterDisplayContent', array(&$item, &$params, $limitstart));
							$item->event->AfterDisplayContent = trim(implode("\n", $results));

							$dispatcher->trigger('onPrepareContent', array(&$item, &$params, $limitstart));
						}

					}
					//Init K2 plugin events
					$item->event->K2BeforeDisplay = '';
					$item->event->K2AfterDisplay = '';
					$item->event->K2AfterDisplayTitle = '';
					$item->event->K2BeforeDisplayContent = '';
					$item->event->K2AfterDisplayContent = '';
					$item->event->K2CommentsCounter = '';

					if ($params->get('K2Plugins', 1))
					{
						//K2 plugins
						JPluginHelper::importPlugin('k2');
						$results = $dispatcher->trigger('onK2BeforeDisplay', array(&$item, &$params, $limitstart));
						$item->event->K2BeforeDisplay = trim(implode("\n", $results));

						$results = $dispatcher->trigger('onK2AfterDisplay', array(&$item, &$params, $limitstart));
						$item->event->K2AfterDisplay = trim(implode("\n", $results));

						$results = $dispatcher->trigger('onK2AfterDisplayTitle', array(&$item, &$params, $limitstart));
						$item->event->K2AfterDisplayTitle = trim(implode("\n", $results));

						$results = $dispatcher->trigger('onK2BeforeDisplayContent', array(&$item, &$params, $limitstart));
						$item->event->K2BeforeDisplayContent = trim(implode("\n", $results));

						$results = $dispatcher->trigger('onK2AfterDisplayContent', array(&$item, &$params, $limitstart));
						$item->event->K2AfterDisplayContent = trim(implode("\n", $results));

						$dispatcher->trigger('onK2PrepareContent', array(&$item, &$params, $limitstart));

						if ($params->get('itemCommentsCounter'))
						{
							$results = $dispatcher->trigger('onK2CommentsCounter', array(&$item, &$params, $limitstart));
							$item->event->K2CommentsCounter = trim(implode("\n", $results));
						}

					}

				}

				// Restore the intotext variable after plugins execution
				$item->introtext = $item->text;

				//Clean the plugin tags
				$item->introtext = preg_replace("#{(.*?)}(.*?){/(.*?)}#s", '', $item->introtext);

				//Author
				if ($params->get('itemAuthor'))
				{
					if (!empty($item->created_by_alias))
					{
						$item->author = $item->created_by_alias;
						$item->authorGender = NULL;
						$item->authorDescription = NULL;
						if ($params->get('itemAuthorAvatar'))
							$item->authorAvatar = K2HelperUtilities::getAvatar('alias');
						$item->authorLink = Juri::root(true);
					}
					else
					{
						$author = JFactory::getUser($item->created_by);
						$item->author = $author->name;

						$query = "SELECT `description`, `gender` FROM #__k2_users WHERE userID=".(int)$author->id;
						$db->setQuery($query, 0, 1);
						$result = $db->loadObject();
						if ($result)
						{
							$item->authorGender = $result->gender;
							$item->authorDescription = $result->description;
						}
						else
						{
							$item->authorGender = NULL;
							$item->authorDescription = NULL;
						}

						if ($params->get('itemAuthorAvatar'))
						{
							$item->authorAvatar = K2HelperUtilities::getAvatar($author->id, $author->email, $componentParams->get('userImageWidth'));
						}
						//Author Link
						$item->authorLink = JRoute::_(K2HelperRoute::getUserRoute($item->created_by));
					}
				}

				// Author avatar
				if ($params->get('itemAuthorAvatar') && !isset($item->authorAvatar))
				{
					if (!empty($item->created_by_alias))
					{
						$item->authorAvatar = K2HelperUtilities::getAvatar('alias');
						$item->authorLink = Juri::root(true);
					}
					else
					{
						$jAuthor = JFactory::getUser($item->created_by);
						$item->authorAvatar = K2HelperUtilities::getAvatar($jAuthor->id, $jAuthor->email, $componentParams->get('userImageWidth'));
						$item->authorLink = JRoute::_(K2HelperRoute::getUserRoute($item->created_by));
					}
				}

				// Extra fields plugins
				if (is_array($item->extra_fields))
				{
					foreach ($item->extra_fields as $key => $extraField)
					{
						if ($extraField->type == 'textarea' || $extraField->type == 'textfield')
						{
							$tmp = new JObject();
							$tmp->text = $extraField->value;
							if ($params->get('JPlugins', 1))
							{
								if (K2_JVERSION != '15')
								{
									$dispatcher->trigger('onContentPrepare', array('mod_k2_content', &$tmp, &$params, $limitstart));
								}
								else
								{
									$dispatcher->trigger('onPrepareContent', array(&$tmp, &$params, $limitstart));
								}
							}
							if ($params->get('K2Plugins', 1))
							{
								$dispatcher->trigger('onK2PrepareContent', array(&$tmp, &$params, $limitstart));
							}
							$extraField->value = $tmp->text;
						}
					}
				}

				$rows[] = $item;
			}

			return $rows;

		}

	}

}