*/ class syntax_plugin_amazonlight extends DokuWiki_Syntax_Plugin { /** @var array what regions to use for the different countries */ const REGIONS = [ 'us' => 'www.amazon.com', 'ca' => 'www.amazon.ca', 'de' => 'www.amazon.de', 'gb' => 'www.amazon.co.uk', 'fr' => 'www.amazon.fr', 'jp' => 'www.amazon.co.jp', ]; /** @inheritDoc */ public function getType() { return 'substition'; } /** @inheritDoc */ public function getPType() { return 'block'; } /** @inheritDoc */ public function getSort() { return 160; } /** * Connect lookup pattern to lexer. * * @param string $mode Parser mode */ public function connectTo($mode) { $this->Lexer->addSpecialPattern('\{\{amazon>[\w:\\- =]+\}\}', $mode, 'plugin_amazonlight'); } /** @inheritDoc */ public function handle($match, $state, $pos, Doku_Handler $handler) { $match = substr($match, 9, -2); list($ctry, $asin) = sexplode(':', $match, 2); // no country given? if (empty($asin)) { $asin = $ctry; $ctry = 'us'; } // default parameters... $params = array( 'imgw' => $this->getConf('imgw'), 'imgh' => $this->getConf('imgh'), 'price' => $this->getConf('showprice'), ); // ...can be overridden list($asin, $more) = sexplode(' ', $asin, 2); $params['asin'] = $asin; if (preg_match('/(\d+)x(\d+)/i', $more, $match)) { $params['imgw'] = $match[1]; $params['imgh'] = $match[2]; } if (preg_match('/noprice/i', $more, $match)) { $params['price'] = false; } elseif (preg_match('/(show)?price/i', $more, $match)) { $params['price'] = true; } // correct country given? if ($ctry === 'uk') $ctry = 'gb'; if (!preg_match('/^(us|gb|jp|de|fr|ca)$/', $ctry)) { $ctry = 'us'; } $params['country'] = $ctry; return $params; } /** @inheritDoc */ public function render($mode, Doku_Renderer $renderer, $data) { if ($mode !== 'xhtml') { return false; } $html = $this->output($data); if (!$html) { if ($data['country'] == 'de') { $renderer->interwikilink('Amazon', 'Amazon.de', 'amazon.de', $data['asin']); } else { $renderer->interwikilink('Amazon', 'Amazon', 'amazon', $data['asin']); } } $renderer->doc .= $html; return true; } /** * @param array $param * @return string */ protected function output($param) { global $conf; try { $data = $this->fetchData($param['asin'], $param['country']); } catch (Exception $e) { msg(hsc($e->getMessage()), -1); return false; } $img = ml($data['img'], array('w' => $param['imgw'], 'h' => $param['imgh'])); ob_start(); echo '

'; echo ''; echo '

'; echo ''; echo hsc($data['title']); echo ''; echo '

'; echo '

'; echo hsc($data['author']); echo '

'; echo '

'; echo hsc($data['isbn']); echo '

'; if ($param['price'] && $data['price']) { echo '

' . hsc($data['price']) . '

'; } echo '

'; return ob_get_clean(); } /** * Fetch the meta data * * @param string $asin * @param string $country * @return array * @throws Exception */ protected function fetchData($asin, $country) { $partner = $this->getConf('partner_' . $country); if (!$partner) $partner = 'none'; $region = self::REGIONS[$country]; $url = 'https://' . $region . '/dp/' . $asin; $http = new DokuHTTPClient(); $http->headers['User-Agent'] = 'User-Agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/138.0.0.0 Safari/537.36'; $html = $http->get($url); if (!$html) { throw new Exception('Failed to fetch data. Status ' . $http->status); } $doc = new Document(); $doc->html($html); $result = [ 'title' => $this->extract($doc, '#productTitle'), 'author' => $this->extract($doc, '#bylineInfo a'), 'rating' => $this->extract($doc, '#averageCustomerReviews span.a-declarative a > span'), 'price' => $this->extract($doc, '.priceToPay'), 'isbn' => $this->extract($doc, '#rpi-attribute-book_details-isbn10 .rpi-attribute-value'), 'img' => $this->extract($doc, '#imgTagWrapperId img', 'src'), 'url' => $url . '?tag=' . $partner, ]; if (!$result['title']) { $result['title'] = $this->extract($doc, 'title'); } if (!$result['title']) { throw new Exception('Could not find title in data'); } return $result; } /** * Extract text or attribute from a selector * * @param Document $doc * @param string $selector * @param string|null $attr attribute to extract, omit for text * @return string */ protected function extract(Document $doc, string $selector, $attr = null): string { $element = $doc->find($selector)->first(); if($element === null) { return ''; } if ($attr) { return $element->attr($attr); } else { return $element->text(); } } }