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<?php
namespace Yoast\WP\SEO\Values;
use Yoast\WP\SEO\Helpers\Image_Helper;
use Yoast\WP\SEO\Helpers\Url_Helper;
/**
* Class Images
*
* Value object for the Images.
*/
class Images {
/**
* The image size.
*
* @var string
*/
public $image_size = 'full';
/**
* Holds the images that have been put out as image.
*
* @var array
*/
protected $images = [];
/**
* The image helper.
*
* @var Image_Helper
*/
protected $image;
/**
* The URL helper.
*
* @var Url_Helper
*/
protected $url;
/**
* Images constructor.
*
* @codeCoverageIgnore
*
* @param Image_Helper $image The image helper.
* @param Url_Helper $url The url helper.
*/
public function __construct( Image_Helper $image, Url_Helper $url ) {
$this->image = $image;
$this->url = $url;
}
/**
* Adds an image to the list by image ID.
*
* @param int $image_id The image ID to add.
*
* @return void
*/
public function add_image_by_id( $image_id ) {
$image = $this->image->get_attachment_image_source( $image_id, $this->image_size );
if ( $image ) {
$this->add_image( $image );
}
}
/**
* Adds an image to the list by image ID.
*
* @param string $image_meta JSON encoded image meta.
*
* @return void
*/
public function add_image_by_meta( $image_meta ) {
$this->add_image( (array) \json_decode( $image_meta ) );
}
/**
* Return the images array.
*
* @return array The images.
*/
public function get_images() {
return $this->images;
}
/**
* Check whether we have images or not.
*
* @return bool True if we have images, false if we don't.
*/
public function has_images() {
return ! empty( $this->images );
}
/**
* Adds an image based on a given URL.
*
* @param string $url The given URL.
*
* @return number|null Returns the found image ID if it exists. Otherwise -1.
* If the URL is empty we return null.
*/
public function add_image_by_url( $url ) {
if ( empty( $url ) ) {
return null;
}
$image_id = $this->image->get_attachment_by_url( $url );
if ( $image_id ) {
$this->add_image_by_id( $image_id );
return $image_id;
}
$this->add_image( $url );
return -1;
}
/**
* Adds an image to the list of images.
*
* @param string|array $image Image array.
*
* @return void
*/
public function add_image( $image ) {
if ( \is_string( $image ) ) {
$image = [ 'url' => $image ];
}
if ( ! \is_array( $image ) || empty( $image['url'] ) || ! \is_string( $image['url'] ) ) {
return;
}
if ( $this->url->is_relative( $image['url'] ) && $image['url'][0] === '/' ) {
$image['url'] = $this->url->build_absolute_url( $image['url'] );
}
if ( \array_key_exists( $image['url'], $this->images ) ) {
return;
}
$this->images[ $image['url'] ] = $image;
}
}