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File name : class-initializer.php

Content :

<?php
/**
 * Initializer base class.
 *
 * @package    @automattic/jetpack-search
 */

namespace Automattic\Jetpack\Search;

use Automattic\Jetpack\Connection\Manager as Connection_Manager;
use WP_Error;
/**
 * Base class for the initializer pattern.
 */
class Initializer {

/**
	 * Initialize the search package.
	 *
	 * The method is called from the `Config` class.
	 */
	public static function init() {
		// Load compatibility files - at this point all plugins are already loaded.
		static::include_compatibility_files();

// Set up package version hook.
		add_filter( 'jetpack_package_versions', __NAMESPACE__ . '\Package::send_version_to_tracker' );

/**
		 * The filter allows abortion of the Jetpack Search package initialization.
		 *
		 * @since 0.11.2
		 *
		 * @param boolean $init_search_package Default value is true.
		 */
		if ( ! apply_filters( 'jetpack_search_init_search_package', true ) ) {
			/**
			 * Fires when the Jetpack Search fails and would fallback to MySQL.
			 *
			 * @since Jetpack 7.9.0
			 * @param string $reason Reason for Search fallback.
			 * @param mixed  $data   Data associated with the request, such as attempted search parameters.
			 */
			do_action( 'jetpack_search_abort', 'jetpack_search_init_search_package_filter', null );
			return;
		}

static::init_before_connection();

// Check whether Jetpack Search should be initialized in the first place .
		if ( ! static::is_connected() || ! static::is_search_supported() ) {
			/** This filter is documented in search/src/initalizers/class-initalizer.php */
			do_action( 'jetpack_search_abort', 'inactive', null );
			return;
		}

$blog_id = Helper::get_wpcom_site_id();
		if ( ! $blog_id ) {
			/** This filter is documented in search/src/initalizers/class-initalizer.php */
			do_action( 'jetpack_search_abort', 'no_blog_id', null );
			return;
		}

if ( ! ( new Module_Control() )->is_active() ) {
			/** This filter is documented in search/src/initalizers/class-initalizer.php */
			do_action( 'jetpack_search_abort', 'module_inactive', null );
			return;
		}

// Initialize search package.
		if ( ! static::init_search( $blog_id ) ) {
			/** This filter is documented in search/src/initalizers/class-initalizer.php */
			do_action( 'jetpack_search_abort', 'jetpack_search_init_search', null );
			return;
		}

/**
		 * Fires when the Jetpack Search package has been initialized.
		 *
		 * @since 0.11.2
		 */
		do_action( 'jetpack_search_loaded' );
	}

/**
	 * Extra tweaks to make Jetpack Search play well with others.
	 */
	public static function include_compatibility_files() {
		if ( class_exists( 'Jetpack' ) ) {
			require_once Package::get_installed_path() . 'compatibility/jetpack.php';
		}
		require_once Package::get_installed_path() . 'compatibility/search-0.15.2.php';
		require_once Package::get_installed_path() . 'compatibility/search-0.17.0.php';
		require_once Package::get_installed_path() . 'compatibility/unsupported-browsers.php';
	}

/**
	 * Init functionality required for connection.
	 */
	protected static function init_before_connection() {
		// Set up Search API endpoints.
		add_action( 'rest_api_init', array( new REST_Controller(), 'register_rest_routes' ) );
		// The dashboard has to be initialized before connection.
		( new Dashboard() )->init_hooks();
	}

/**
	 * Init the search package.
	 *
	 * @param int $blog_id WPCOM blog ID.
	 */
	protected static function init_search( $blog_id ) {
		// We could provide CLI to enable search/instant search, so init them regardless of whether the module is active or not.
		static::init_cli();

$success                   = false;
		$is_instant_search_enabled = ( new Module_Control() )->is_instant_search_enabled();
		if ( $is_instant_search_enabled ) {
			// Enable Instant search experience.
			$success = static::init_instant_search( $blog_id );
		}
		/**
		 * Filter whether classic search should be enabled. By this stage, search module would be enabled already.
		 *
		 * @since 0.39.6
		 * @param boolean initial value whether classic search is enabled.
		 * @param boolean filtered result whether classic search is enabled.
		 */
		if ( apply_filters( 'jetpack_search_classic_search_enabled', ! $is_instant_search_enabled ) ) {
			// Enable the classic search experience.
			$success = static::init_classic_search( $blog_id );
		}

if ( $success ) {
			// registers Jetpack Search widget.
			add_action( 'widgets_init', array( static::class, 'jetpack_search_widget_init' ) );
		}

return $success;
	}

/**
	 * Init Instant Search and its dependencies.
	 *
	 * @param int $blog_id WPCOM blog ID.
	 */
	protected static function init_instant_search( $blog_id ) {
		/**
		 * The filter allows abortion of the Instant Search initialization.
		 *
		 * @since 0.11.2
		 *
		 * @param boolean $init_instant_search Default value is true.
		 */
		if ( ! apply_filters( 'jetpack_search_init_instant_search', true ) ) {
			return;
		}

// Enable the instant search experience.
		Instant_Search::initialize( $blog_id );
		// Register instant search configurables as WordPress settings.
		new Settings();
		// Instantiate "Customberg", the live search configuration interface.
		Customberg::instance();
		// Enable configuring instant search within the Customizer iff it's not using a block theme.
		if ( ! wp_is_block_theme() ) {
			new Customizer();
		}
		return true;
	}

/**
	 * Init Classic Search.
	 *
	 * @param int $blog_id WPCOM blog ID.
	 */
	protected static function init_classic_search( $blog_id ) {
		/**
		 * The filter allows abortion of the Classic Search initialization.
		 *
		 * @since 0.11.2
		 *
		 * @param boolean $init_instant_search Default value is true.
		 */
		if ( ! apply_filters( 'jetpack_search_init_classic_search', true ) ) {
			return;
		}
		Classic_Search::initialize( $blog_id );
		return true;
	}

/**
	 * Register jetpack-search CLI if `\CLI` exists.
	 *
	 * @return void
	 */
	protected static function init_cli() {
		if ( defined( 'WP_CLI' ) && \WP_CLI ) {
			// @phan-suppress-next-line PhanUndeclaredFunctionInCallable -- https://github.com/phan/phan/issues/4763
			\WP_CLI::add_command( 'jetpack-search', __NAMESPACE__ . '\CLI' );
		}
	}

/**
	 * Register the widget if Jetpack Search is available and enabled.
	 */
	public static function jetpack_search_widget_init() {
		register_widget( 'Automattic\Jetpack\Search\Search_Widget' );
	}

/**
	 * Check if site has been connected.
	 */
	protected static function is_connected() {
		return ( new Connection_Manager( Package::SLUG ) )->is_connected();
	}

/**
	 * Check if search is supported by current plan.
	 */
	protected static function is_search_supported() {
		return ( new Plan() )->supports_search();
	}

/**
	 * Perform necessary initialization steps for classic and instant search in the constructor.
	 *
	 * @deprecated
	 */
	public static function initialize() {
		return new WP_Error(
			'invalid-method',
			/* translators: %s: Method name. */
			sprintf( __( "Method '%s' not implemented. Must be overridden in subclass.", 'jetpack-search-pkg' ), __METHOD__ ),
			array( 'status' => 405 )
		);
	}
}

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