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<?php

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namespace Yoast\WP\SEO\Generators\Schema;

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use Yoast\WP\SEO\Config\Schema_IDs;

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/**

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* Returns ImageObject schema data.

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class Main_Image extends Abstract_Schema_Piece {

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/**

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* Determines whether or not a piece should be added to the graph.

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* @return bool

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public function is_needed() {

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return true;

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}

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/**

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* Adds a main image for the current URL to the schema if there is one.

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* This can be either the featured image or the first image in the content of the page.

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* @return false|array Image Schema.

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public function generate() {

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$image_id = $this->context->canonical . Schema_IDs::PRIMARY_IMAGE_HASH;

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// The featured image.

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if ( $this->context->main_image_id ) {

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$generated_schema = $this->helpers->schema->image->generate_from_attachment_id( $image_id, $this->context->main_image_id );

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$this->context->main_image_url = $generated_schema['url'];

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return $generated_schema;

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}

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// The first image in the content.

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if ( $this->context->main_image_url ) {

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return $this->helpers->schema->image->generate_from_url( $image_id, $this->context->main_image_url );

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}

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return false;

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}

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}

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