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<?php

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use AMPforWP\AMPVendor\AMP_Base_Sanitizer;

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use AMPforWP\AMPVendor\AMP_DOM_Utils;

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if ( ! defined( 'ABSPATH' ) ) {

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exit;

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}

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/**

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* Converts embedly-cards to <amp-embedly-card>

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class AMPforWP_Embedly_Sanitizer extends AMP_Base_Sanitizer {

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private $embedly_cards = array();

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private static $script_slug = 'amp-embedly-card';

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private static $script_src = 'https://cdn.ampproject.org/v0/amp-embedly-card-0.1.js';

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public function sanitize() {

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$body = $this->get_body_node();

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$xpath = new DOMXPath($this->dom);

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$class_name = 'embedly-card';

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$blockquotes = $xpath->query("//*[contains(@class,'$class_name')]");

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foreach($blockquotes as $embedly_card){

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$this->replace_with_amp_embedly_card($embedly_card);

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}

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if(count($this->embedly_cards) > 0){

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$this->did_convert_elements = true;

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}

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}

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function replace_with_amp_embedly_card ($embedly_card){

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$medias = $embedly_card->getElementsByTagName('a');

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if($medias->length > 0){

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$media = $medias->item(0);

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$href = $media->getAttribute('href');

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$tag = $this->create_amp_embedly_card($href);

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$this->embedly_cards[] = $tag; // add it to array

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$embedly_card->parentNode->replaceChild( $tag, $embedly_card);

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}

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}

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function create_amp_embedly_card($href){

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$attrs = array(

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'data-url' => $href,

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'width' => 100,

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'height'=> 50,

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'layout' => 'responsive'

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);

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$attrs = ampforwp_amp_consent_check( $attrs );

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return AMP_DOM_Utils::create_node($this->dom, 'amp-embedly-card', $attrs);

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}

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public function get_scripts() {

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if ( ! $this->did_convert_elements ) {

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return array();

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}

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return array( self::$script_slug => self::$script_src );

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}

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}

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