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<?php
namespace Yoast\WP\Lib;
use Exception;
use WPSEO_Utils;
use Yoast\WP\Lib\Dependency_Injection\Container_Registry;
use Yoast\WP\SEO\Exceptions\Forbidden_Property_Mutation_Exception;
use Yoast\WP\SEO\Loader;
use YoastSEO_Vendor\Symfony\Component\DependencyInjection\ContainerInterface;
/**
* Abstract class to extend for the main class in a plugin.
*/
abstract class Abstract_Main {
/**
* The DI container.
*
* @var ContainerInterface|null
*/
protected $container;
/**
* A cache for previously requested and constructed surfaces.
*
* @var mixed[]
*/
private $cached_surfaces = [];
/**
* Loads the plugin.
*
* @return void
*
* @throws Exception If loading fails and YOAST_ENVIRONMENT is development.
*/
public function load() {
if ( $this->container ) {
return;
}
try {
$this->container = $this->get_container();
Container_Registry::register( $this->get_name(), $this->container );
if ( ! $this->container ) {
return;
}
if ( ! $this->container->has( Loader::class ) ) {
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.
}
}
/**
* Magic getter for retrieving a property from a surface.
*
* @param string $property The property to retrieve.
*
* @return mixed The value of the property.
*
* @throws Exception When the property doesn't exist.
*/
public function __get( $property ) {
if ( \array_key_exists( $property, $this->cached_surfaces ) ) {
return $this->cached_surfaces[ $property ];
}
$surfaces = $this->get_surfaces();
if ( isset( $surfaces[ $property ] ) ) {
$this->cached_surfaces[ $property ] = $this->container->get( $surfaces[ $property ] );
return $this->cached_surfaces[ $property ];
}
throw new Exception( \sprintf( 'Property $%s does not exist.', $property ) );
}
/**
* 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 ) {
if ( \array_key_exists( $property, $this->cached_surfaces ) ) {
return true;
}
$surfaces = $this->get_surfaces();
if ( ! isset( $surfaces[ $property ] ) ) {
return false;
}
return $this->container->has( $surfaces[ $property ] );
}
/**
* Prevents setting dynamic properties and unsetting 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 );
}
/**
* Loads the DI container.
*
* @return ContainerInterface|null The DI container.
*
* @throws Exception If something goes wrong generating the DI container.
*/
abstract protected function get_container();
/**
* Gets the name of the plugin.
*
* @return string The name.
*/
abstract protected function get_name();
/**
* Gets the surfaces of this plugin.
*
* @return array A mapping of surface name to the responsible class.
*/
abstract protected function get_surfaces();
/**
* Returns whether or not we're in an environment for Yoast development.
*
* @return bool Whether or not to load in development mode.
*/
protected function is_development() {
try {
return WPSEO_Utils::is_development_mode();
} catch ( Exception $exception ) {
// E.g. when WordPress and/or WordPress SEO are not loaded.
return \defined( 'YOAST_ENVIRONMENT' ) && \YOAST_ENVIRONMENT === 'development';
}
}
}