File "class-config.php"

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<?php
/**
 * The base Jetpack configuration class file.
 *
 * @package automattic/jetpack-config
 */

namespace Automattic\Jetpack;

/*
 * The Config package does not require the composer packages that
 * contain the package classes shown below. The consumer plugin
 * must require the corresponding packages to use these features.
 */
use Automattic\Jetpack\Connection\Manager;
use Automattic\Jetpack\Connection\Plugin;
use Automattic\Jetpack\Import\Main as Import_Main;
use Automattic\Jetpack\JITMS\JITM as JITMS_JITM;
use Automattic\Jetpack\Post_List\Post_List;
use Automattic\Jetpack\Publicize\Publicize_Setup;
use Automattic\Jetpack\Search\Initializer as Jetpack_Search_Main;
use Automattic\Jetpack\Stats\Main as Stats_Main;
use Automattic\Jetpack\Stats_Admin\Main as Stats_Admin_Main;
use Automattic\Jetpack\Sync\Main as Sync_Main;
use Automattic\Jetpack\VideoPress\Initializer as VideoPress_Pkg_Initializer;
use Automattic\Jetpack\Waf\Waf_Initializer as Jetpack_Waf_Main;
use Automattic\Jetpack\WordAds\Initializer as Jetpack_WordAds_Main;

/**
 * The configuration class.
 */
class Config {

	const FEATURE_ENSURED         = 1;
	const FEATURE_NOT_AVAILABLE   = 0;
	const FEATURE_ALREADY_ENSURED = -1;

	/**
	 * The initial setting values.
	 *
	 * @var Array
	 */
	protected $config = array(
		'jitm'            => false,
		'connection'      => false,
		'sync'            => false,
		'post_list'       => false,
		'identity_crisis' => false,
		'search'          => false,
		'publicize'       => false,
		'wordads'         => false,
		'waf'             => false,
		'videopress'      => false,
		'stats'           => false,
		'stats_admin'     => false,
		'yoast_promo'     => false,
		'import'          => false,
	);

	/**
	 * Initialization options stored here.
	 *
	 * @var array
	 */
	protected $feature_options = array();

	/**
	 * Creates the configuration class instance.
	 */
	public function __construct() {
		/**
		 * Adding the config handler to run on priority 2 because the class itself is
		 * being constructed on priority 1.
		 */
		add_action( 'plugins_loaded', array( $this, 'on_plugins_loaded' ), 2 );
	}

	/**
	 * Require a feature to be initialized. It's up to the package consumer to actually add
	 * the package to their composer project. Declaring a requirement using this method
	 * instructs the class to initialize it.
	 *
	 * Run the options method (if exists) every time the method is called.
	 *
	 * @param String $feature the feature slug.
	 * @param array  $options Additional options, optional.
	 */
	public function ensure( $feature, array $options = array() ) {
		$this->config[ $feature ] = true;

		$this->set_feature_options( $feature, $options );

		$method_options = 'ensure_options_' . $feature;
		if ( method_exists( $this, $method_options ) ) {
			$this->{ $method_options }();
		}
	}

	/**
	 * Runs on plugins_loaded hook priority with priority 2.
	 *
	 * @action plugins_loaded
	 */
	public function on_plugins_loaded() {
		if ( $this->config['connection'] ) {
			$this->ensure_class( 'Automattic\Jetpack\Connection\Manager' )
				&& $this->ensure_feature( 'connection' );
		}

		if ( $this->config['sync'] ) {
			$this->ensure_class( 'Automattic\Jetpack\Sync\Main' )
				&& $this->ensure_feature( 'sync' );
		}

		if ( $this->config['jitm'] ) {
			// Check for the JITM class in both namespaces. The namespace was changed in jetpack-jitm v1.6.
			( $this->ensure_class( 'Automattic\Jetpack\JITMS\JITM', false )
				|| $this->ensure_class( 'Automattic\Jetpack\JITM' ) )
			&& $this->ensure_feature( 'jitm' );
		}

		if ( $this->config['post_list'] ) {
			$this->ensure_class( 'Automattic\Jetpack\Post_List\Post_List' )
				&& $this->ensure_feature( 'post_list' );
		}

		if ( $this->config['identity_crisis'] ) {
			$this->ensure_class( 'Automattic\Jetpack\Identity_Crisis' )
				&& $this->ensure_feature( 'identity_crisis' );
		}

		if ( $this->config['search'] ) {
			$this->ensure_class( 'Automattic\Jetpack\Search\Initializer' )
				&& $this->ensure_feature( 'search' );
		}

		if ( $this->config['publicize'] ) {
			$this->ensure_class( 'Automattic\Jetpack\Publicize\Publicize_UI' ) && $this->ensure_class( 'Automattic\Jetpack\Publicize\Publicize' )
				&& $this->ensure_feature( 'publicize' );
		}

		if ( $this->config['wordads'] ) {
			$this->ensure_class( 'Automattic\Jetpack\WordAds\Initializer' )
				&& $this->ensure_feature( 'wordads' );
		}

		if ( $this->config['waf'] ) {
			$this->ensure_class( 'Automattic\Jetpack\Waf\Waf_Initializer' )
				&& $this->ensure_feature( 'waf' );
		}

		if ( $this->config['videopress'] ) {
			$this->ensure_class( 'Automattic\Jetpack\VideoPress\Initializer' ) && $this->ensure_feature( 'videopress' );
		}
		if ( $this->config['stats'] ) {
			$this->ensure_class( 'Automattic\Jetpack\Stats\Main' ) && $this->ensure_feature( 'stats' );
		}
		if ( $this->config['stats_admin'] ) {
			$this->ensure_class( 'Automattic\Jetpack\Stats_Admin\Main' ) && $this->ensure_feature( 'stats_admin' );
		}

		if ( $this->config['yoast_promo'] ) {
			$this->ensure_class( 'Automattic\Jetpack\Yoast_Promo' ) && $this->ensure_feature( 'yoast_promo' );
		}

		if ( $this->config['import'] ) {
			$this->ensure_class( 'Automattic\Jetpack\Import\Main' )
				&& $this->ensure_feature( 'import' );
		}
	}

	/**
	 * Returns true if the required class is available and alerts the user if it's not available
	 * in case the site is in debug mode.
	 *
	 * @param String  $classname a fully qualified class name.
	 * @param Boolean $log_notice whether the E_USER_NOTICE should be generated if the class is not found.
	 *
	 * @return Boolean whether the class is available.
	 */
	protected function ensure_class( $classname, $log_notice = true ) {
		$available = class_exists( $classname );

		if ( $log_notice && ! $available && defined( 'WP_DEBUG' ) && WP_DEBUG ) {
			trigger_error( // phpcs:ignore WordPress.PHP.DevelopmentFunctions.error_log_trigger_error
				sprintf(
					/* translators: %1$s is a PHP class name. */
					esc_html__(
						'Unable to load class %1$s. Please add the package that contains it using composer and make sure you are requiring the Jetpack autoloader',
						'jetpack-config'
					),
					esc_html( $classname )
				),
				E_USER_NOTICE
			);
		}

		return $available;
	}

	/**
	 * Ensures a feature is enabled, sets it up if it hasn't already been set up.
	 *
	 * @param String $feature slug of the feature.
	 * @return Integer either FEATURE_ENSURED, FEATURE_ALREADY_ENSURED or FEATURE_NOT_AVAILABLE constants.
	 */
	protected function ensure_feature( $feature ) {
		$method = 'enable_' . $feature;
		if ( ! method_exists( $this, $method ) ) {
			return self::FEATURE_NOT_AVAILABLE;
		}

		if ( did_action( 'jetpack_feature_' . $feature . '_enabled' ) ) {
			return self::FEATURE_ALREADY_ENSURED;
		}

		$this->{ $method }();

		/**
		 * Fires when a specific Jetpack package feature is initalized using the Config package.
		 *
		 * @since 1.1.0
		 */
		do_action( 'jetpack_feature_' . $feature . '_enabled' );

		return self::FEATURE_ENSURED;
	}

	/**
	 * Enables the JITM feature.
	 */
	protected function enable_jitm() {
		if ( class_exists( 'Automattic\Jetpack\JITMS\JITM' ) ) {
			JITMS_JITM::configure();
		} else {
			// Provides compatibility with jetpack-jitm <v1.6.
			JITM::configure();
		}

		return true;
	}

	/**
	 * Enables the Post_List feature.
	 */
	protected function enable_post_list() {
		Post_List::configure();

		return true;
	}

	/**
	 * Enables the Sync feature.
	 */
	protected function enable_sync() {
		Sync_Main::configure();

		return true;
	}

	/**
	 * Enables the Connection feature.
	 */
	protected function enable_connection() {
		Manager::configure();

		return true;
	}

	/**
	 * Enables the identity-crisis feature.
	 */
	protected function enable_identity_crisis() {
		Identity_Crisis::init();
	}

	/**
	 * Enables the search feature.
	 */
	protected function enable_search() {
		Jetpack_Search_Main::init();
	}

	/**
	 * Enables the Publicize feature.
	 */
	protected function enable_publicize() {
		Publicize_Setup::configure();

		return true;
	}

	/**
	 * Handles Publicize options.
	 */
	protected function ensure_options_publicize() {
		$options = $this->get_feature_options( 'publicize' );

		if ( ! empty( $options['force_refresh'] ) ) {
			Publicize_Setup::$refresh_plan_info = true;
		}
	}

	/**
	 * Enables WordAds.
	 */
	protected function enable_wordads() {
		Jetpack_WordAds_Main::init();
	}

	/**
	 * Enables Waf.
	 */
	protected function enable_waf() {
		Jetpack_Waf_Main::init();

		return true;
	}

	/**
	 * Enables VideoPress.
	 */
	protected function enable_videopress() {
		VideoPress_Pkg_Initializer::init();
		return true;
	}

	/**
	 * Enables Stats.
	 */
	protected function enable_stats() {
		Stats_Main::init();
		return true;
	}

	/**
	 * Enables Stats Admin.
	 */
	protected function enable_stats_admin() {
		Stats_Admin_Main::init();
		return true;
	}

	/**
	 * Handles VideoPress options
	 */
	protected function ensure_options_videopress() {
		$options = $this->get_feature_options( 'videopress' );
		if ( ! empty( $options ) ) {
			VideoPress_Pkg_Initializer::update_init_options( $options );
		}
		return true;
	}

	/**
	 * Enables Yoast Promo.
	 */
	protected function enable_yoast_promo() {
		Yoast_Promo::init();
		return true;
	}

	/**
	 * Enables the Import feature.
	 */
	protected function enable_import() {
		Import_Main::configure();

		return true;
	}

	/**
	 * Setup the Connection options.
	 */
	protected function ensure_options_connection() {
		$options = $this->get_feature_options( 'connection' );

		if ( ! empty( $options['slug'] ) ) {
			// The `slug` and `name` are removed from the options because they need to be passed as arguments.
			$slug = $options['slug'];
			unset( $options['slug'] );

			$name = $slug;
			if ( ! empty( $options['name'] ) ) {
				$name = $options['name'];
				unset( $options['name'] );
			}

			( new Plugin( $slug ) )->add( $name, $options );
		}

		return true;
	}

	/**
	 * Setup the Identity Crisis options.
	 *
	 * @return bool
	 */
	protected function ensure_options_identity_crisis() {
		$options = $this->get_feature_options( 'identity_crisis' );

		if ( is_array( $options ) && count( $options ) ) {
			add_filter(
				'jetpack_idc_consumers',
				function ( $consumers ) use ( $options ) {
					$consumers[] = $options;
					return $consumers;
				}
			);
		}

		return true;
	}

	/**
	 * Setup the Sync options.
	 */
	protected function ensure_options_sync() {
		$options = $this->get_feature_options( 'sync' );
		if ( method_exists( 'Automattic\Jetpack\Sync\Main', 'set_sync_data_options' ) ) {
			Sync_Main::set_sync_data_options( $options );
		}

		return true;
	}

	/**
	 * Temporary save initialization options for a feature.
	 *
	 * @param string $feature The feature slug.
	 * @param array  $options The options.
	 *
	 * @return bool
	 */
	protected function set_feature_options( $feature, array $options ) {
		if ( $options ) {
			$this->feature_options[ $feature ] = $options;
		}

		return true;
	}

	/**
	 * Get initialization options for a feature from the temporary storage.
	 *
	 * @param string $feature The feature slug.
	 *
	 * @return array
	 */
	protected function get_feature_options( $feature ) {
		return empty( $this->feature_options[ $feature ] ) ? array() : $this->feature_options[ $feature ];
	}
}