Book metadata support

Book.php

@@ -0,0 +1,143 @@
+<?php
+/**
+ * GoogleRichCards
+ * Google Rich Cards metadata generator for Books
+ *
+ * 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 Book {
+  /**
+   * @var static Book instance for Signleton pattern
+   */
+  public static $instance;
+
+  /**
+   * Singleon pattern getter
+   *
+   * @return Book
+   */
+  public static function getInstance() {
+    if(!isset(self::$instance)) {
+      self::$instance = new Book();
+    }
+
+    return self::$instance;
+  }
+
+  public function parse($text, $params = [], Parser $parser, PPFrame $frame) {
+    $o = array();
+    foreach($params as $k => $v) {
+      $o[$k] = $parser->recursiveTagParse($v, $frame);
+    }
+    return '<!-- BookData:'.json_encode($o).' -->';
+  }
+
+  public function render(OutputPage &$out) {
+    if($out->isArticle()) {
+      foreach($this->getData($out->mBodytext) as $book) {
+        $e = json_decode($book);
+
+        $book = array(
+           '@context'    => 'http://schema.org',
+           '@type'       => 'book',
+           'name'        => $this->getMetadataField($e, 'name', 'name'),
+           'publisher' => $e->{'publisher'},
+           'numberOfPages' => $e->{'numberOfPages'},
+           'isbn' => $e->{'isbn'},
+           'bookEdition' => $e->{'bookEdition'},
+           'description' => $this->getMetadataField($e, 'description', 'description'),
+           'image'       => $this->getRawURL($e->{'image'}),
+        );
+
+
+
+        if($e->{'author'}) {
+          $book['author'] = array(
+            '@type'   => 'PerformingGroup',
+            'name'    => $this->getMetadataField($e, 'author', 'author'),
+          );
+
+          if($e->{'offer'}) {
+            $book['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'),
+            );
+          }
+        }
+
+        $out->addHeadItem(
+          'GoogleRichCardsBook_'.$e->{'name'},
+          '<script type="application/ld+json">'.json_encode($book).'</script>'
+        );
+      }
+    }
+  }
+
+  private function getData($pageText) {
+		$matches = preg_match_all('/<!-- BookData:(\{(.*)\}) -->/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 ($value) {
+      case "Discontinued":
+        return "http://schema.org/Discontinued";
+      case "InStock":
+        return "http://schema.org/InStock";
+      case "InStoreOnly":
+        return "http://schema.org/InStoreOnly";
+      case "LimitedAvailability":
+        return "http://schema.org/LimitedAvailability";
+      case "OnlineOnly":
+        return "http://schema.org/OnlineOnly";
+      case "OutOfStock":
+        return "http://schema.org/OutOfStock";
+      case "PreOrder":
+        return "http://schema.org/PreOrder";
+      case "PreSale":
+        return "http://schema.org/PreSale";
+      case "SoldOut":
+        return "http://schema.org/SoldOut";
+    }
+    return "";
+  }
+
+  private function getMetadataField($obj, $field, $name) {
+    $value = $obj->{$name};
+    if ($value == '{{{'.$field.'}}}') {
+      return "";
+    }
+    return $value;
+  }
+}
+
+?>

Hooks.php

@@ -27,7 +27,7 @@ class Hooks {
 	 * @return bool
 	 */
   public static function onBeforePageDisplay(OutputPage &$out, Skin &$skin) {
-    global $wgGoogleRichCardsAnnotateArticles, $wgGoogleRichCardsAnnotateEvents, $wgGoogleRichCardsAnnotateWebSite;
+    global $wgGoogleRichCardsAnnotateArticles, $wgGoogleRichCardsAnnotateEvents, $wgGoogleRichCardsAnnotateBooks, $wgGoogleRichCardsAnnotateWebSite;
 
     if($wgGoogleRichCardsAnnotateArticles) {
       $article = Article::getInstance();
@@ -38,6 +38,12 @@ public static function onBeforePageDisplay(OutputPage &$out, Skin &$skin) {
       $event = Event::getInstance();
       $event->render($out);
     }
+
+    if($wgGoogleRichCardsAnnotateBooks) {
+      $book = Event::getInstance();
+      $book->render($out);
+
+    }
 
     if($wgGoogleRichCardsAnnotateWebSite) {
       $website = WebSite::getInstance();
@@ -60,7 +66,16 @@ public static function onParserFirstCallInit(Parser &$parser) {
       $event = Event::getInstance();
       $parser->setHook('event', [$event, 'parse']);
     }
-  }
+
+
+  /*  public static function onParserFirstCallInit(Parser &$parser) {*/
+        global $wgGoogleRichCardsAnnotateBooks;
+
+        if($wgGoogleRichCardsAnnotateBooks) {
+            $book = Event::getInstance();
+            $parser->setHook('book', [$book, 'parse']);
+        }
+    }
 
 }
 

README.md

@@ -29,6 +29,9 @@ $wgGoogleRichCardsAnnotateArticles = true;
 // Enable annotations for events
 $wgGoogleRichCardsAnnotateEvents = true;
 
+// Enable annotations for books
+$wgGoogleRichCardsAnnotateBooks = true;
+
 // Enable WebSite annotations
 $wgGoogleRichCardsAnnotateWebSite = true;
 ```
@@ -55,7 +58,22 @@ Performer: {{{performer}}}
 
 Please note, you're free to update this template in order to setup events publishing in your own flavour
 
-### Usage of Event template
+### Template:Book
+```
+
+### Usage of book template
+
+== Livre ==
+=== {{{name}}} ===
+
+{{{description}}}
+
+
+
+auteur: {{{author}}}
+
+
+<book name="{{{name}}}" place="{{{place}}}" description="{{{description}}}" postalCode="{{{postalCode}}}" locality="{{{locality}}}" region="{{{region}}}" country="{{{country}}}" author="{{{author}}}" streetaddress="{{{streetAddress}}}" offer="{{{offer}}}" offerURL="{{{offerURL}}}" offerPrice="{{{offerPrice}}}" offerCurrency="{{{offerCurrency}}}" offerAvailability="{{{offerAvailability}}}" validFrom="{{{validFrom}}}" image="{{{image}}} />
 
 ```
 {{Event
@@ -78,3 +96,23 @@ Please note, you're free to update this template in order to setup events publis
 |validFrom=2018-06-01T10:00+03:00
 }}
 ```
+
+### Usage of Event template
+```
+{{Book
+|name=La reconstruction de la ville de Valenciennes (1940-1959)
+|place=Valenciennes
+|description=Après l'incendie du 22 mai 1940, Valenciennes située en zone interdite est sous la tutelle de l'Autorité administrative allemande. André Muffang, Commissaire à la Reconstruction, désigne Valenciennes comme l'une des premières villes sinistrées à reconstruire. Le plan de reconstruction de la ville et l'aménagement de son agglomération est établi sous Vichy par l'éminent architecte-urbaniste Albert Laprade. Il est reconnu d'utilité publique le 24 juin 1943 et vise à consacrer la ville comme capitale du Hainaut afin d'en faire, à terme le centre d'un nouveau département. Ce plan ne sera pas remis en question après guerre.
+|postalCode=000000
+|locality=Valenciennes
+|region=Haut de France
+|country=Fr
+|offerAvailability=InStock
+|author=Jean-Marie Richez
+|offerPrice=26
+|offerCurrency=EUR
+|offerURL=http://www.histoire-valenciennes-cahv.fr/index.php?title=La_reconstruction_de_la_ville_de_Valenciennes_(1940-1959)
+|image=http://www.histoire-valenciennes-cahv.fr/Memoires/public/journals/1/cover_issue_60_fr_CA.jpg
+|validFrom=2018-06-01T10:00+03:00
+}}
+```

extension.json

@@ -16,6 +16,7 @@
 		"MediaWiki\\Extension\\GoogleRichCards\\Hooks": "Hooks.php",
 		"MediaWiki\\Extension\\GoogleRichCards\\Article": "Article.php",
 		"MediaWiki\\Extension\\GoogleRichCards\\Event": "Event.php",
+        "MediaWiki\\Extension\\GoogleRichCards\\Book": "Book.php",
 		"MediaWiki\\Extension\\GoogleRichCards\\WebSite": "WebSite.php"
 	},
 	"Hooks": {