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<?php
/**
* Yoast SEO Plugin File.
*
* @package Yoast\WP\SEO
*/
namespace Yoast\WP\SEO;
use Exception;
use Yoast\WP\SEO\Dependency_Injection\Container_Compiler;
use Yoast\WP\SEO\Generated\Cached_Container;
use Yoast\WP\SEO\Surfaces\Classes_Surface;
use Yoast\WP\SEO\Surfaces\Helpers_Surface;
use Yoast\WP\SEO\Surfaces\Meta_Surface;
if ( ! \defined( 'WPSEO_VERSION' ) ) {
\header( 'Status: 403 Forbidden' );
\header( 'HTTP/1.1 403 Forbidden' );
exit();
}
/**
* Class Main
*
* @property Classes_Surface $classes The classes surface.
* @property Meta_Surface $meta The meta surface.
* @property Helpers_Surface $helpers The helpers surface.
*/
class Main {
/**
* The API namespace constant.
*
* @var string
*/
const API_V1_NAMESPACE = 'yoast/v1';
/**
* The WP CLI namespace constant.
*
* @var string
*/
const WP_CLI_NAMESPACE = 'yoast';
/**
* The DI container.
*
* @var Cached_Container|null
*/
private $container;
/**
* Surface classes that provide our external interface.
*
* @var string[]
*/
private $surfaces = [
'classes' => Classes_Surface::class,
'meta' => Meta_Surface::class,
'helpers' => Helpers_Surface::class,
];
/**
* Loads the plugin.
*
* @throws Exception If loading fails and YOAST_ENVIRONMENT is development.
*/
public function load() {
if ( $this->container ) {
return;
}
try {
$this->container = $this->get_container();
if ( ! $this->container ) {
return;
}
$this->container->get( Loader::class )->load();
} catch ( Exception $e ) {
if ( $this->is_development() ) {
throw $e;
}
// Don't crash the entire site, simply don't load.
// TODO: Add error notifications here.
}
}
/**
* Magic getter for retrieving a property.
*
* @param string $property The property to retrieve.
*
* @throws Exception When the property doesn't exist.
*
* @return string The value of the property.
*/
public function __get( $property ) {
if ( isset( $this->{$property} ) ) {
$this->{$property} = $this->container->get( $this->surfaces[ $property ] );
return $this->{$property};
}
throw new Exception( "Property $property does not exist." );
}
/**
* Checks if the given property exists as a surface.
*
* @param string $property The property to retrieve.
*
* @return bool True when property is set.
*/
public function __isset( $property ) {
return isset( $this->surfaces[ $property ] );
}
/**
* Loads the DI container.
*
* @throws Exception If something goes wrong generating the DI container.
*
* @return null|Cached_Container The DI container.
*/
private function get_container() {
if ( $this->is_development() && \class_exists( '\Yoast\WP\SEO\Dependency_Injection\Container_Compiler' ) ) {
// Exception here is unhandled as it will only occur in development.
Container_Compiler::compile( $this->is_development() );
}
if ( \file_exists( __DIR__ . '/generated/container.php' ) ) {
require_once __DIR__ . '/generated/container.php';
return new Cached_Container();
}
return null;
}
/**
* Returns whether or not we're in an environment for Yoast development.
*
* @return bool Whether or not to load in development mode.
*/
private function is_development() {
return \defined( 'YOAST_ENVIRONMENT' ) && \YOAST_ENVIRONMENT === 'development';
}
}