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<?php
/* @package Joomla
* @copyright Copyright (C) Open Source Matters. All rights reserved.
* @license http://www.gnu.org/copyleft/gpl.html GNU/GPL, see LICENSE.php
* @extension Phoca Extension
* @copyright Copyright (C) Jan Pavelka www.phoca.cz
* @license http://www.gnu.org/copyleft/gpl.html GNU/GPL
*/
defined( '_JEXEC' ) or die( 'Restricted access' );
jimport( 'joomla.plugin.plugin' );
class plgContentPhocaOpenGraph extends JPlugin
{
public $pluginNr = 0;
public $twitterEnable = 0;
public function __construct(& $subject, $config) {
parent::__construct($subject, $config);
$this->loadLanguage();
}
public function setImage($image) {
$change_svg_to_png = $this->params->get('change_svg_to_png', 0);
$linkImg = $image;
$absU = 0;
// Test if this link is absolute http:// then do not change it
$pos1 = strpos($image, 'http://');
if ($pos1 === false) {
} else {
$absU = 1;
}
// Test if this link is absolute https:// then do not change it
$pos2 = strpos($image, 'https://');
if ($pos2 === false) {
} else {
$absU = 1;
}
if ($absU == 1) {
$linkImg = $image;
} else {
$linkImg = JURI::base(false).$image;
if ($image[0] == '/') {
$myURI = new \Joomla\Uri\Uri(JURI::base(false));
$myURI->setPath($image);
$linkImg = $myURI->toString();
} else {
$linkImg = JURI::base(false).$image;
}
if ($change_svg_to_png == 1) {
$pathInfo = pathinfo($linkImg);
if (isset($pathInfo['extension']) && $pathInfo['extension'] == 'svg') {
$linkImg = $pathInfo['dirname'] .'/'. $pathInfo['filename'] . '.png';
}
}
}
return $linkImg;
}
public function renderTag($name, $value, $type = 1) {
$document = JFactory::getDocument();
// Encoded html tags can still be rendered, decode and strip tags first.
$value = strip_tags(html_entity_decode($value));
// OG
if ($type == 1) {
$document->setMetadata(htmlspecialchars($name, ENT_COMPAT, 'UTF-8'), htmlspecialchars($value, ENT_COMPAT, 'UTF-8'));
} else {
$document->addCustomTag('<meta property="'.htmlspecialchars($name, ENT_COMPAT, 'UTF-8').'" content="' . htmlspecialchars($value, ENT_COMPAT, 'UTF-8') . '" />');
}
// Tweet with cards
if ($this->twitterEnable == 1) {
if ($name == 'og:title') {
$document->setMetadata('twitter:title', htmlspecialchars($value, ENT_COMPAT , 'UTF-8'));
}
if ($name == 'og:description') {
$document->setMetadata('twitter:description', htmlspecialchars($value, ENT_COMPAT, 'UTF-8'));
}
if ($name == 'og:image') {
$document->setMetadata('twitter:image', htmlspecialchars($value, ENT_COMPAT, 'UTF-8'));
}
}
}
public function onContentAfterDisplay($context, &$row, &$params, $page=0) {
$app = JFactory::getApplication();
$view = $app->input->get('view');// article, category, featured
$option = $app->input->get('option');// article, category, featured
$itemid = $app->input->get('Itemid');
/*if ($view == 'article' && $app->input->get('id') != $row->id) {
// Page displays article so we want to set metadata for main content article only
return;
}*/
if ($app->getName() != 'site') { return;}
if ($view == 'tag') { return; }
if ($view == 'featured' && $this->params->get('displayf', 1) == 0) { return; }
if ($view == 'category' && $this->params->get('displayc', 1) == 0) { return; }
if ((int)$this->pluginNr > 0) { return; } // Second instance in featured view or category view
$itemids = $this->params->get('disable_menu_items', '');
$options = $this->params->get('disable_options', '');
$views = $this->params->get('disable_views', '');
$rSD = $this->params->get('remove_strings_description', '');
$parameterImage = $this->params->get('parameter_image', 1);
$this->twitterEnable = $this->params->get('twitter_enable', 0);
$twitterCard = $this->params->get('twitter_card', 'summary_large_image');
if ($this->twitterEnable == 1) {
$this->renderTag('twitter:card', $twitterCard, 1);
if ($this->params->get('twitter_site', '') != '') {
$this->renderTag('twitter:site', $this->params->get('twitter_site', ''), 1);
}
if ($this->params->get('twitter_site', '') != '') {
$this->renderTag('twitter:creator', $this->params->get('twitter_creator', ''), 1);
}
}
if ($itemids != '') {
$itemidsA = explode(',', $itemids);
if (!empty($itemidsA)) {
foreach ($itemidsA as $k => $v) {
if ($itemid == $v) {
return;// don't apply it in this view
}
}
}
}
if ($options != '') {
$optionsA = explode(',', $options);
if (!empty($optionsA)) {
foreach ($optionsA as $k => $v) {
if ($option == $v) {
return;// don't apply it in this view
}
}
}
}
if ($views != '') {
$viewsA = explode(',', $views);
if (!empty($viewsA)) {
foreach ($viewsA as $k => $v) {
if ($view == $v) {
return;// don't apply it in this view
}
}
}
}
$document = JFactory::getDocument();
$config = JFactory::getConfig();
$type = $this->params->get('render_type', 1);
$desc_intro = $this->params->get('desc_intro', 0);
$title_type = $this->params->get('title_type', 1);
$title_type_featured = $this->params->get('title_type_featured', 3);
$title_type_category = $this->params->get('title_type_category', 1);
$desc_type_featured = $this->params->get('desc_type_featured', 3);
$desc_type_category = $this->params->get('desc_type_category', 1);
$active = $app->getMenu()->getActive();
// We need help variables as we cannot change the $row variable - such then will influence global settings
$thisDesc = '';
$thisTitle = '';
$thisKey = '';
$thisImg = '';
// Attributes
$attribs = '';
if (isset($row->attribs)) {
//$attribs = json_decode($row->attribs);
$attribs = (is_string($row->attribs) ? json_decode($row->attribs) : $row->attribs);
}
// will be set for each type
/*if (isset($row->metadesc)) {
$thisDesc = $row->metadesc;
}*/
if (isset($row->metakey)) {
$thisKey = $row->metakey;
}
// ARTICLE, FEATURED, CATEGORY
if ($view == 'featured' && $this->pluginNr == 0) {
// FEATURED
// 3 MENU LINK TITLE
// 2 NOTHING
// 1 FIRST ARTICLE TITLE
if ($title_type_featured == 2) {
$thisTitle = '';
} else if ($title_type_featured == 1) {
if (isset($row->title)) {
$thisTitle = $row->title;
}
} else if ($title_type_featured == 3) {
if (isset($document->title) && $document->title != '') {
$thisTitle = $document->title;
}
}
if ($desc_type_featured == 2) {
$thisDesc = -1;
} else if ($desc_type_featured == 1) {
if (isset($row->metadesc)) {
$thisDesc = $row->metadesc;
}
} else if ($desc_type_featured == 3) {
if (isset($active->params) && !empty($active->params->get('menu-meta_description')) && $active->params->get('menu-meta_description') != '') {
$thisDesc = $active->params->get('menu-meta_description');
}
}
$suffix = 'f';// Data from first article will be set
$this->pluginNr = 1;
} else if ($view == 'category' && $this->pluginNr == 0) {
$suffix = 'c';// Data from first article will be set
if (isset($row->catid) && (int)$row->catid > 0) {
$db = JFactory::getDBO();
$query = ' SELECT c.metadesc, c.metakey, c.params, c.title FROM #__categories AS c'
.' WHERE c.id = '.(int) $row->catid . ' LIMIT 1';
$db->setQuery($query);
$cItem = $db->loadObjectList();
if (!empty($cItem[0]->params)) {
$registry = new JRegistry;
$registry->loadString($cItem[0]->params);
$pC = $registry->toArray();
if (isset($pC['image']) && $pC['image'] != '') {
$thisImg = $pC['image'];
}
}
if (isset($cItem[0]->metadesc) && $cItem[0]->metadesc != '') {
//$row->metadesc = $cItem[0]->metadesc; We cannot influence global variable
$thisDesc = $cItem[0]->metadesc;
}
if (isset($cItem[0]->title) && $cItem[0]->title != '') {
//$row->title = $cItem[0]->title; We cannot influence global variable
$thisTitle = $cItem[0]->title;
}
if (isset($cItem[0]->metakey) && $cItem[0]->metakey != '') {
//$row->title = $cItem[0]->title; We cannot influence global variable
$thisKey = $cItem[0]->metakey;
}
}
// C A T E G O R Y
// 3 MENU LINK TITLE
// 2 CATEGORY PAGE TITLE NOT EXIST
// 1 IF NOT 3 THEN CATEGORY TITLE
if ($title_type_category == 3 || $thisTitle == '') {
if (isset($document->title) && $document->title != '') {
$thisTitle = $document->title;
}
}
if ($desc_type_category == 3 || $thisDesc == '') {
if (isset($active->params) && !empty($active->params->get('menu-meta_description')) && $active->params->get('menu-meta_description') != '') {
$thisDesc = $active->params->get('menu-meta_description');
}
}
$this->pluginNr = 1;
} else {
// A R T I C L E
// 3 MENU LINK TITLE
// 2 ARTICLE PAGE TITLE
// 1 ARTICLE TITLE
if ($title_type == 3) {
if (isset($document->title) && $document->title != '') {
$thisTitle = $document->title;
} else {
// Fallback to standard title
if (isset($row->title)) {
$thisTitle = $row->title;
}
}
} else if ($title_type == 2) {
if (isset($attribs->article_page_title) && $attribs->article_page_title != '') {
$thisTitle = $attribs->article_page_title;
} else {
// Fallback to standard title
if (isset($row->title)) {
$thisTitle = $row->title;
}
}
} else {
if (isset($row->title)) {
$thisTitle = $row->title;
}
}
$suffix = '';
if (isset($row->metadesc)) {
$thisDesc = $row->metadesc;
}
}
// TITLE
if ($this->params->get('title'.$suffix, '') != '') {
$this->renderTag('og:title', $this->params->get('title'.$suffix, ''), $type);
} else if (isset($thisTitle) && (int)$thisTitle == -1) {
// FORCE NOTHING - FEATURED VIEW
} else if (isset($thisTitle) && $thisTitle != '') {
$this->renderTag('og:title', $thisTitle, $type);
}
// Type
$this->renderTag('og:type', $this->params->get('type'.$suffix, 'article'), $type);
// Image
$pictures = '';
if (isset($row->images)) {
//$pictures = json_decode($row->images);
$pictures = (is_string($row->images) ? json_decode($row->images) : $row->images);
}
$imgSet = 0;
if ($this->params->get('image'.$suffix, '') != '' && $parameterImage == 1) {
$this->renderTag('og:image', $this->setImage($this->params->get('image'.$suffix, '')), $type);
$imgSet = 1;
} else if ($thisImg != ''){
$this->renderTag('og:image', $this->setImage($thisImg), $type);
$imgSet = 1;
} else if (isset($pictures->{'image_intro'}) && $pictures->{'image_intro'} != '') {
$this->renderTag('og:image', $this->setImage($pictures->{'image_intro'}), $type);
$imgSet = 1;
} else if (isset($pictures->{'image_fulltext'}) && $pictures->{'image_fulltext'} != '') {
$this->renderTag('og:image', $this->setImage($pictures->{'image_fulltext'}), $type);
$imgSet = 1;
} else {
// Try to find image in article
$fulltext = '';
if (isset($row->fulltext) && $row->fulltext != '') {
$fulltext = $row->fulltext;
}
$introtext = '';
if (isset($row->introtext) && $row->introtext != '') {
$introtext = $row->introtext;
}
$content = $introtext . $fulltext;
preg_match('/< *img[^>]*src *= *["\']?([^"\']*)/i', $content, $src);
if (isset($src[1]) && $src[1] != '') {
$this->renderTag('og:image', $this->setImage($src[1]), $type);
//$this->renderTag('og:image', JURI::base(false).$src[1], $type);
$imgSet = 1;
}
// Try to find image in images/phocaopengraph folder
if ($imgSet == 0) {
if (isset($row->id) && (int)$row->id > 0) {
jimport( 'joomla.filesystem.file' );
$imgPath = '';
$path = JPATH_ROOT . '/images/phocaopengraph/';
if (JFile::exists($path . '/' . (int)$row->id.'.jpg')) {
$imgPath = 'images/phocaopengraph/'.(int)$row->id.'.jpg';
} else if (JFile::exists($path . '/' . (int)$row->id.'.png')) {
$imgPath = 'images/phocaopengraph/'.(int)$row->id.'.png';
} else if (JFile::exists($path . '/' . (int)$row->id.'.gif')) {
$imgPath = 'images/phocaopengraph/'.(int)$row->id.'.gif';
}
if ($imgPath != '') {
$this->renderTag('og:image', $this->setImage($imgPath), $type);
$imgSet = 1;
}
}
}
}
// If still image not set and parameter Image is set as last, then try to add the parameter image
if ($imgSet == 0 && $this->params->get('image'.$suffix, '') != '' && $parameterImage == 0) {
$this->renderTag('og:image', $this->setImage($this->params->get('image'.$suffix, '')), $type);
}
// END IMAGE
//URL
if ($this->params->get('url'.$suffix, '') != '') {
$this->renderTag('og:url', $this->params->get('url'.$suffix, ''), $type);
} else {
//} else if ((int)$row->id > 0) {
//$url = ContentHelperRoute::getArticleRoute($row->id);
//$document->setMetadata('og:url', JRoute::_($url));
$uri = JFactory::getURI();
$this->renderTag('og:url', $uri->toString(), $type);
}
// Site Name
if ($this->params->get('site_name'.$suffix, '') != '') {
$this->renderTag('og:site_name', $this->params->get('site_name'.$suffix, ''), $type);
} else if ($thisTitle != '') {
$this->renderTag('og:site_name', $config->get('sitename'), $type);
}
// Description - works for article only (category and featured includes $thisDesc by conditions set previously)
if ($this->params->get('description'.$suffix, '') != '') { // description in params
$this->renderTag('og:description', $this->params->get('description'.$suffix, ''), $type);
} else if (isset($thisDesc) && (int)$thisDesc == -1) {
// FORCE NOTHING - FEATURED VIEW
} else if (isset($thisDesc) && $thisDesc != '') { // article meta description
$this->renderTag('og:description', $thisDesc, $type);
} else if (isset($active->params) && !empty($active->params->get('menu-meta_description')) && $active->params->get('menu-meta_description') != '') {// menu link meta description
$this->renderTag('og:description', $active->params->get('menu-meta_description'), $type);
} else if (isset($row->introtext) && $row->introtext != '' && $desc_intro == 1) { // artcle introtext
$iTD = $row->introtext;
$iTD = preg_replace('#(<code.*?>).*?(</code>)#', '$1$2', $iTD);
$iTD = preg_replace('#(<pre.*?>).*?(</pre>)#', '$1$2', $iTD);
$iTD = preg_replace('#<br.*?>#', ' ', $iTD);
$iTD = strip_tags($iTD);
$iTD = str_replace("\r\n", ' ', $iTD);
$iTD = str_replace("\n", ' ', $iTD);
$iTD = str_replace("\n", ' ', $iTD);
// Remove every possible plugin code
$iTD = preg_replace("/\{[^}]+\}/","",$iTD);
$iTD = preg_replace("/\[[^]]+\]/","",$iTD);
$iTD = preg_replace("/\([^)]+\)/","",$iTD);
if ($rSD != '') {
$rSDA = explode(',', $rSD);
if (!empty($rSDA)) {
foreach ($rSDA as $k => $v) {
$iTD = str_replace($v, "", $iTD);
}
}
}
$this->renderTag('og:description', $iTD, $type);
} else if ($config->get('MetaDesc') != '') { // site meta desc
$this->renderTag('og:description', $config->get('MetaDesc'), $type);
}
// FB App ID - COMMON
if ($this->params->get('app_id', '') != '') {
$this->renderTag('fb:app_id', $this->params->get('app_id', ''), $type);
}
// Other
if ($this->params->get('other', '') != '') {
$other = explode (';', $this->params->get('other', ''));
if (!empty($other)) {
foreach ($other as $v) {
if ($v != '') {
$vother = explode ('=', $v);
if(!empty($vother)) {
if (isset($vother[0]) && isset($vother[1])) {
$this->renderTag(strip_tags($vother[0]), $vother[1], $type);
}
}
}
}
}
}
}
/*
* Extra features
*/
public function onContentBeforeDisplay($context, &$row, &$params, $page=0) {
$article_display_category_image = $this->params->get('article_display_category_image', 0);
if ((int)$article_display_category_image > 0) {
$app = JFactory::getApplication();
if ($app->isClient('site')) {
$categoryImage = '';
$categoryImageAlt = '';
if (isset($row->catid) && (int)$row->catid > 0) {
$db = JFactory::getDBO();
$query = ' SELECT c.params FROM #__categories AS c'
. ' WHERE c.id = ' . (int)$row->catid . ' LIMIT 1';
$db->setQuery($query);
$cItem = $db->loadObjectList();
if (!empty($cItem[0]->params)) {
//$registry = new JRegistry;
//$registry->loadString($cItem[0]->params);
//$pC = $registry->toArray();
$pC = json_decode($cItem[0]->params);
if (isset($pC->image) && $pC->image != '') {
$categoryImage = $pC->image;
if (isset($pC->image_alt) && $pC->image_alt != '') {
$categoryImageAlt = $pC->image_alt;
}
}
}
}
if (isset($row->images)) {
$images = json_decode($row->images);
} else {
$images = new stdClass();
}
if ((int)$article_display_category_image == 1 || (int)$article_display_category_image == 3) {
if ((!isset($images->image_fulltext) || (isset($images->image_fulltext) && $images->image_fulltext == '')) && $categoryImage != '') {
$images->image_fulltext = $categoryImage;
$images->image_fulltext_alt = $categoryImageAlt;
$row->images = json_encode($images);
}
}
if ((int)$article_display_category_image == 2 || (int)$article_display_category_image == 3) {
if ((!isset($images->image_intro) || (isset($images->image_intro) && $images->image_intro == '')) && $categoryImage != '') {
$images->image_intro = $categoryImage;
$images->image_intro_alt = $categoryImageAlt;
$row->images = json_encode($images);
}
}
}
}
}
}
?>