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<?php
namespace Yoast\WP\SEO\Helpers\Open_Graph;
use Yoast\WP\SEO\Helpers\Image_Helper as Base_Image_Helper;
use Yoast\WP\SEO\Helpers\Url_Helper;
/**
* A helper object for Open Graph images.
*/
class Image_Helper {
/**
* The URL helper.
*
* @var Url_Helper
*/
private $url;
/**
* The base image helper.
*
* @var Base_Image_Helper
*/
private $image;
/**
* Image_Helper constructor.
*
* @codeCoverageIgnore
*
* @param Url_Helper $url The url helper.
* @param Base_Image_Helper $image The image helper.
*/
public function __construct( Url_Helper $url, Base_Image_Helper $image ) {
$this->url = $url;
$this->image = $image;
}
/**
* Determines whether the passed URL is considered valid.
*
* @deprecated 22.4
* @codeCoverageIgnore
*
* @param array<array<string, string|int>> $image The image array.
*
* @return bool Whether or not the URL is a valid image.
*/
public function is_image_url_valid( array $image ) {
\_deprecated_function( __METHOD__, 'Yoast SEO 22.4' );
if ( empty( $image['url'] ) || ! \is_string( $image['url'] ) ) {
return false;
}
$image_extension = $this->url->get_extension_from_url( $image['url'] );
$is_valid = $this->image->is_extension_valid( $image_extension );
/**
* Filter: 'wpseo_opengraph_is_valid_image_url' - Allows extra validation for an image url.
*
* @param bool $is_valid Current validation result.
* @param string $url The image url to validate.
*/
return (bool) \apply_filters( 'wpseo_opengraph_is_valid_image_url', $is_valid, $image['url'] );
}
/**
* Retrieves the overridden image size value.
*
* @return string|null The image size when overriden by filter or null when not.
*/
public function get_override_image_size() {
/**
* Filter: 'wpseo_opengraph_image_size' - Allow overriding the image size used
* for Open Graph sharing. If this filter is used, the defined size will always be
* used for the og:image. The image will still be rejected if it is too small.
*
* Only use this filter if you manually want to determine the best image size
* for the `og:image` tag.
*
* Use the `wpseo_image_sizes` filter if you want to use our logic. That filter
* can be used to add an image size that needs to be taken into consideration
* within our own logic.
*
* @param string|false $size Size string.
*/
return \apply_filters( 'wpseo_opengraph_image_size', null );
}
/**
* Retrieves the image data by a given attachment id.
*
* @param int $attachment_id The attachment id.
*
* @return array<string, string|int>|false The image data when found, `false` when not.
*/
public function get_image_by_id( $attachment_id ) {
if ( ! $this->image->is_valid_attachment( $attachment_id ) ) {
return false;
}
$override_image_size = $this->get_override_image_size();
if ( $override_image_size ) {
return $this->image->get_image( $attachment_id, $override_image_size );
}
return $this->image->get_best_attachment_variation( $attachment_id );
}
}