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<?php
namespace Yoast\WP\SEO\Surfaces\Values;
use WPSEO_Replace_Vars;
use Yoast\WP\SEO\Context\Meta_Tags_Context;
use Yoast\WP\SEO\Exceptions\Forbidden_Property_Mutation_Exception;
use Yoast\WP\SEO\Integrations\Front_End_Integration;
use Yoast\WP\SEO\Models\Indexable;
use Yoast\WP\SEO\Presenters\Abstract_Indexable_Presenter;
use Yoast\WP\SEO\Presenters\Rel_Next_Presenter;
use Yoast\WP\SEO\Presenters\Rel_Prev_Presenter;
use Yoast\WP\SEO\Surfaces\Helpers_Surface;
use YoastSEO_Vendor\Symfony\Component\DependencyInjection\ContainerInterface;
/**
* Meta value object.
*
* @property array $breadcrumbs The breadcrumbs array for the current page.
* @property string $canonical The canonical URL for the current page.
* @property string $company_name The company name from the Knowledge graph settings.
* @property int $company_logo_id The attachment ID for the company logo.
* @property string $description The meta description for the current page, if set.
* @property int $estimated_reading_time_minutes The estimated reading time in minutes for posts.
* @property Indexable $indexable The indexable object.
* @property string $main_schema_id Schema ID that points to the main Schema thing on the page, usually the webpage or article Schema piece.
* @property string $meta_description The meta description for the current page, if set.
* @property string $open_graph_article_author The article:author value.
* @property string $open_graph_article_modified_time The article:modified_time value.
* @property string $open_graph_article_published_time The article:published_time value.
* @property string $open_graph_article_publisher The article:publisher value.
* @property string $open_graph_description The og:description.
* @property bool $open_graph_enabled Whether OpenGraph is enabled on this site.
* @property string $open_graph_fb_app_id The Facebook App ID.
* @property array $open_graph_images The array of images we have for this page.
* @property string $open_graph_locale The og:locale for the current page.
* @property string $open_graph_publisher The OpenGraph publisher reference.
* @property string $open_graph_site_name The og:site_name.
* @property string $open_graph_title The og:title.
* @property string $open_graph_type The og:type.
* @property string $open_graph_url The og:url.
* @property string $page_type The Schema page type.
* @property array $robots An array of the robots values set for the current page.
* @property string $rel_next The next page in the series, if any.
* @property string $rel_prev The previous page in the series, if any.
* @property array $schema The entire Schema array for the current page.
* @property string $schema_page_type The Schema page type.
* @property string $site_name The site name from the Yoast SEO settings.
* @property string $site_represents Whether the site represents a 'person' or a 'company'.
* @property array|false $site_represents_reference The schema reference ID for what this site represents.
* @property string $site_url The site's main URL.
* @property int $site_user_id If the site represents a 'person', this is the ID of the accompanying user profile.
* @property string $title The SEO title for the current page.
* @property string $twitter_card The Twitter card type for the current page.
* @property string $twitter_creator The Twitter card author for the current page.
* @property string $twitter_description The Twitter card description for the current page.
* @property string $twitter_image The Twitter card image for the current page.
* @property string $twitter_site The Twitter card site reference for the current page.
* @property string $twitter_title The Twitter card title for the current page.
* @property string $wordpress_site_name The site name from the WordPress settings.
*/
class Meta {
/**
* The container.
*
* @var ContainerInterface
*/
protected $container;
/**
* The meta tags context.
*
* @var Meta_Tags_Context
*/
protected $context;
/**
* The front end integration.
*
* @var Front_End_Integration
*/
protected $front_end;
/**
* The helpers surface.
*
* @var Helpers_Surface
*/
protected $helpers;
/**
* The replace vars helper
*
* @var WPSEO_Replace_Vars
*/
protected $replace_vars;
/**
* Collection of properties dynamically set via the magic __get() method.
*
* @var array<string, mixed> Key is the property name.
*/
private $properties_bin = [];
/**
* Create a meta value object.
*
* @param Meta_Tags_Context $context The indexable presentation.
* @param ContainerInterface $container The DI container.
*/
public function __construct(
Meta_Tags_Context $context,
ContainerInterface $container
) {
$this->container = $container;
$this->context = $context;
$this->helpers = $this->container->get( Helpers_Surface::class );
$this->replace_vars = $this->container->get( WPSEO_Replace_Vars::class );
$this->front_end = $this->container->get( Front_End_Integration::class );
}
/**
* Returns the output as would be presented in the head.
*
* @return object The HTML and JSON presentation of the head metadata.
*/
public function get_head() {
$presenters = $this->get_presenters();
/** This filter is documented in src/integrations/front-end-integration.php */
$presentation = \apply_filters( 'wpseo_frontend_presentation', $this->context->presentation, $this->context );
$html_output = '';
$json_head_fields = [];
foreach ( $presenters as $presenter ) {
$presenter->presentation = $presentation;
$presenter->replace_vars = $this->replace_vars;
$presenter->helpers = $this->helpers;
$html_output .= $this->create_html_presentation( $presenter );
$json_field = $this->create_json_field( $presenter );
// Only use the output of presenters that could successfully present their data.
if ( $json_field !== null && ! empty( $json_field->key ) ) {
$json_head_fields[ $json_field->key ] = $json_field->value;
}
}
$html_output = \trim( $html_output );
return (object) [
'html' => $html_output,
'json' => $json_head_fields,
];
}
/**
* Magic getter for presenting values through the appropriate presenter, if it exists.
*
* @param string $name The property to get.
*
* @return mixed The value, as presented by the appropriate presenter.
*/
public function __get( $name ) {
if ( \array_key_exists( $name, $this->properties_bin ) ) {
return $this->properties_bin[ $name ];
}
/** This filter is documented in src/integrations/front-end-integration.php */
$presentation = \apply_filters( 'wpseo_frontend_presentation', $this->context->presentation, $this->context );
if ( ! isset( $presentation->{$name} ) ) {
if ( isset( $this->context->{$name} ) ) {
$this->properties_bin[ $name ] = $this->context->{$name};
return $this->properties_bin[ $name ];
}
return null;
}
$presenter_namespace = 'Yoast\WP\SEO\Presenters\\';
$parts = \explode( '_', $name );
if ( $parts[0] === 'twitter' ) {
$presenter_namespace .= 'Twitter\\';
$parts = \array_slice( $parts, 1 );
}
elseif ( $parts[0] === 'open' && $parts[1] === 'graph' ) {
$presenter_namespace .= 'Open_Graph\\';
$parts = \array_slice( $parts, 2 );
}
$presenter_class = $presenter_namespace . \implode( '_', \array_map( 'ucfirst', $parts ) ) . '_Presenter';
if ( \class_exists( $presenter_class ) ) {
/**
* The indexable presenter.
*
* @var Abstract_Indexable_Presenter
*/
$presenter = new $presenter_class();
$presenter->presentation = $presentation;
$presenter->helpers = $this->helpers;
$presenter->replace_vars = $this->replace_vars;
$value = $presenter->get();
}
else {
$value = $presentation->{$name};
}
$this->properties_bin[ $name ] = $value;
return $this->properties_bin[ $name ];
}
/**
* Magic isset for ensuring properties on the presentation are recognised.
*
* @param string $name The property to get.
*
* @return bool Whether or not the requested property exists.
*/
public function __isset( $name ) {
if ( \array_key_exists( $name, $this->properties_bin ) ) {
return true;
}
return isset( $this->context->presentation->{$name} );
}
/**
* Prevents setting dynamic properties and overwriting the value of declared properties
* from an inaccessible context.
*
* @param string $name The property name.
* @param mixed $value The property value.
*
* @return void
*
* @throws Forbidden_Property_Mutation_Exception Set is never meant to be called.
*/
public function __set( $name, $value ) { // @phpcs:ignore Generic.CodeAnalysis.UnusedFunctionParameter.FoundAfterLastUsed -- __set must have a name and value - PHPCS #3715.
throw Forbidden_Property_Mutation_Exception::cannot_set_because_property_is_immutable( $name );
}
/**
* Prevents unsetting dynamic properties and unsetting declared properties
* from an inaccessible context.
*
* @param string $name The property name.
*
* @return void
*
* @throws Forbidden_Property_Mutation_Exception Unset is never meant to be called.
*/
public function __unset( $name ) {
throw Forbidden_Property_Mutation_Exception::cannot_unset_because_property_is_immutable( $name );
}
/**
* Strips all nested dependencies from the debug info.
*
* @return array
*/
public function __debugInfo() {
return [ 'context' => $this->context ];
}
/**
* Returns all presenters.
*
* @return Abstract_Indexable_Presenter[]
*/
protected function get_presenters() {
$presenters = $this->front_end->get_presenters( $this->context->page_type, $this->context );
if ( $this->context->page_type === 'Date_Archive' ) {
/**
* Define a filter that removes objects of type Rel_Next_Presenter or Rel_Prev_Presenter from a list.
*
* @param object $presenter The presenter to verify.
*
* @return bool True if the presenter is not a Rel_Next or Rel_Prev presenter.
*/
$callback = static function ( $presenter ) {
return ! \is_a( $presenter, Rel_Next_Presenter::class )
&& ! \is_a( $presenter, Rel_Prev_Presenter::class );
};
$presenters = \array_filter( $presenters, $callback );
}
return $presenters;
}
/**
* Uses the presenter to create a line of HTML.
*
* @param Abstract_Indexable_Presenter $presenter The presenter.
*
* @return string
*/
protected function create_html_presentation( $presenter ) {
$presenter_output = $presenter->present();
if ( ! empty( $presenter_output ) ) {
return $presenter_output . \PHP_EOL;
}
return '';
}
/**
* Converts a presenter's key and value to JSON.
*
* @param Abstract_Indexable_Presenter $presenter The presenter whose key and value are to be converted to JSON.
*
* @return object|null
*/
protected function create_json_field( $presenter ) {
if ( $presenter->get_key() === 'NO KEY PROVIDED' ) {
return null;
}
$value = $presenter->get();
if ( empty( $value ) ) {
return null;
}
return (object) [
'key' => $presenter->escape_key(),
'value' => $value,
];
}
}