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Event.php
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Event.php
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<?php
/**
* GoogleRichCards
* Google Rich Cards metadata generator for Events
*
* PHP version 5.4
*
* @category Extension
* @package GoogleRichCards
* @author Igor Shishkin <me@teran.ru>
* @license GPL http://www.gnu.org/licenses/gpl.html
* @link https://github.com/teran/mediawiki-GoogleRichCards
*/
namespace MediaWiki\Extension\GoogleRichCards;
use OutputPage;
use Parser;
use PPFrame;
if (!defined('MEDIAWIKI')) {
echo("This is a Mediawiki extension and doesn't provide standalone functionality\n");
die(1);
}
class Event {
/**
* @var static Event instance for Signleton pattern
*/
public static $instance;
/**
* Singleon pattern getter
*
* @return Event
*/
public static function getInstance() {
if(!isset(self::$instance)) {
self::$instance = new Event();
}
return self::$instance;
}
public function parse($text, $params = [], Parser $parser, PPFrame $frame) {
$o = array();
foreach($params as $k => $v) {
$o[$k] = $parser->recursiveTagParse($v, $frame);
}
return '<!-- EventData:'.json_encode($o).' -->';
}
public function render(OutputPage &$out) {
if($out->isArticle()) {
foreach($this->getData($out->mBodytext) as $event) {
$e = json_decode($event);
$event = array(
'@context' => 'http://schema.org',
'@type' => 'Event',
'name' => $this->getMetadataField($e, 'name', 'name'),
'startDate' => $this->getMetadataField($e, 'startDate', 'startdate'),
'endDate' => $this->getMetadataField($e, 'endDate', 'enddate'),
'description' => $this->getMetadataField($e, 'description', 'description'),
'image' => $this->getRawURL($e->{'image'}),
'eventAttendanceMode' => $this->getItemAvailability($e->{'attendancemode'}),
'eventStatus' => $this->getItemAvailability($e->{'eventstatus'}),
);
switch ($e->{'attendancemode'}) {
case "MixedEventAttendanceMode":
if($e->{'place'}) {
$event['location'] = array(
$v['online'] = array(
'@type' => "VirtualLocation",
'url' => $this->getRawURL($e->{'virtualvendorurl'}),
),
$p['offline'] = array(
'@type' => 'Place',
'name' => $e->{'place'},
'address' => array(
'streetAddress' => $this->getMetadataField($e, 'streetAddress', 'streetaddress'),
'addressLocality' => $this->getMetadataField($e, 'addressLocality', 'locality'),
'postalCode' => $this->getMetadataField($e, 'postalCode', 'postalcode'),
'addressRegion' => $this->getMetadataField($e, 'addressRegion', 'region'),
'addressCountry' => $this->getMetadataField($e, 'addressCountry', 'country'),
),
),
);
};
break;
case "OfflineEventAttendanceMode":
if($e->{'place'}) {
$event['location'] = array(
'@type' => 'Place',
'name' => $e->{'place'},
'address' => array(
'streetAddress' => $this->getMetadataField($e, 'streetAddress', 'streetaddress'),
'addressLocality' => $this->getMetadataField($e, 'addressLocality', 'locality'),
'postalCode' => $this->getMetadataField($e, 'postalCode', 'postalcode'),
'addressRegion' => $this->getMetadataField($e, 'addressRegion', 'region'),
'addressCountry' => $this->getMetadataField($e, 'addressCountry', 'country'),
),
);
};
break;
case "OnlineEventAttendanceMode":
if($e->{'virtualvendorurl'}) {
$event['location'] = array(
'@type' => "VirtualLocation",
'url' => $this->getRawURL($e->{'virtualvendorurl'}),
);
};
break;
default:
echo "Error, attendence mode not set";
}
if($e->{'contributor'}) {
$event['contributor'] = array(
'@type' => 'Person',
'name' => $this->getMetadataField($e, 'name', 'contributor'),
'url' => $this->getRawURL($e->{'contributor_url'}),
'sameAs' => $this->getRawURL($e->{'contributor_sameas'}),
'award' => $this->getMetadataField($e, 'award', 'contributor_award'),
);
}
if($e->{'organizer'}) {
$event['organizer'] = array(
'@type' => 'Organization',
'name' => $this->getMetadataField($e, 'organizer', 'organizer'),
'url' => $this->getRawURL($e->{'organizer_url'}),
);
}
if($e->{'performer'}) {
$event['performer'] = array(
'@type' => 'PerformingGroup',
'name' => $this->getMetadataField($e, 'performer', 'performer'),
'url' => $this->getRawURL($e->{'performer_url'}),
'sameAs' => $this->getRawURL($e->{'performer_sameas'}),
);
}
if($e->{'offer'}) {
$event['offers'] = array(
'@type' => 'Offer',
'url' => $this->getRawURL($e->{'offerurl'}),
'price' => $this->getMetadataField($e, 'offerPrice', 'offerprice'),
'priceCurrency' => $this->getMetadataField($e, 'offerCurrency', 'offercurrency'),
'availability' => $this->getItemAvailability($e->{'offeravailability'}),
'validFrom' => $this->getMetadataField($e, 'validFrom', 'validfrom'),
);
}
$out->addHeadItem(
'GoogleRichCardsEvent_'.$e->{'name'},
'<script type="application/ld+json">'.json_encode($event).'</script>'
);
}
}
}
private function getData($pageText) {
$matches = preg_match_all('/<!-- EventData:(\{(.*)\}) -->/m', $pageText, $extracted);
return $extracted[1];
}
private function getRawURL($htmlLink) {
$matches = preg_match_all('/((https?:\\/\\/)([a-z0-9\.\/_-]+))/i', $htmlLink, $extracted);
return $extracted[0][0];
}
private function getItemAvailability($value) {
switch ($value) {
/*offer availability enumerations */
case "Discontinued":
return "http://schema.org/Discontinued";
case "InStock":
return "http://schema.org/InStock";
case "InStoreOnly":
return "http://schema.org/InStoreOnly";
case "LimitedAvailability":
return "http://schema.org/LimitedAvailability";
case "OnlineOnly":
return "http://schema.org/OnlineOnly";
case "OutOfStock":
return "http://schema.org/OutOfStock";
case "PreOrder":
return "http://schema.org/PreOrder";
case "PreSale":
return "http://schema.org/PreSale";
case "SoldOut":
return "http://schema.org/SoldOut";
/* eventAttendanceMode enumerations */
case "MixedEventAttendanceMode":
return "http://schema.org/MixedEventAttendanceMode";
case "OfflineEventAttendanceMode":
return "http://schema.org/OfflineEventAttendanceMode";
case "OnlineEventAttendanceMode":
return "http://schema.org/OnlineEventAttendanceMode";
/* eventStatus enumerations */
case "EventCancelled":
return "http://schema.org/EventCancelled";
case "EventMovedOnline":
return "http://schema.org/EventMovedOnline";
case "EventPostponed":
return "http://schema.org/EventPostponed";
case "EventRescheduled":
return "http://schema.org/EventRescheduled";
case "EventScheduled":
return "http://schema.org/EventScheduled";
}
return "";
}
private function getMetadataField($obj, $field, $name) {
$value = $obj->{$name};
if ($value == '{{{'.$field.'}}}') {
return "";
}
return $value;
}
}
?>