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✏️ Editing: AbstractPreload.php

<?php

namespace WP_Rocket\Engine\Preload;

/**
 * Abstract preload class
 *
 * @since 3.2
 * @author Remy Perona
 */
abstract class AbstractPreload {

/**
	 * Suffix used to identify "mobile items" to preload.
	 *
	 * @since  3.5
	 * @author Grégory Viguier
	 *
	 * @var string
	 */
	const MOBILE_SUFFIX = '##wpm-mobile##';

/**
	 * Background Process instance
	 *
	 * @since 3.2
	 * @var FullProcess
	 */
	protected $preload_process;

/**
	 * Cache processing that use get_rocket_cache_query_string().
	 *
	 * @since  3.5
	 * @author Grégory Viguier
	 *
	 * @var array
	 */
	protected $cache_query_strings;

/**
	 * Constructor
	 *
	 * @since 3.2
	 * @author Remy Perona
	 *
	 * @param FullProcess $preload_process Background Process instance.
	 */
	public function __construct( FullProcess $preload_process ) {
		$this->preload_process = $preload_process;
	}

/**
	 * Cancels any preload process running
	 *
	 * @since 3.2
	 * @author Remy Perona
	 *
	 * @return void
	 */
	public function cancel_preload() {
		delete_transient( $this->get_running_transient_name() );

$this->preload_process->cancel_process();
	}

/**
	 * Checks if a process is already running
	 *
	 * @since 3.2.1.1
	 * @author Remy Perona
	 *
	 * @return boolean
	 */
	public function is_process_running() {
		return $this->preload_process->is_process_running();
	}

/**
	 * Tell if mobile preload is enabled.
	 *
	 * @since  3.5
	 * @author Grégory Viguier
	 *
	 * @return bool
	 */
	public function is_mobile_preload_enabled() {
		return $this->preload_process->is_mobile_preload_enabled();
	}

/**
	 * Get the prefix to prepend to the user agent used for preload to make a HTTP request detected as a mobile device.
	 *
	 * @since  3.5.0.2
	 * @author Grégory Viguier
	 *
	 * @return string
	 */
	public function get_mobile_user_agent_prefix() {
		return $this->preload_process->get_mobile_user_agent_prefix();
	}

/**
	 * Get the number of preloaded URLs.
	 *
	 * @since  3.5
	 * @author Grégory Viguier
	 *
	 * @return int|bool The number of preloaded URLs. False if the process is not running.
	 */
	public function get_number_of_preloaded_items() {
		$nbr = get_transient( $this->get_running_transient_name() );

if ( false === $nbr ) {
			return false;
		}

return absint( $nbr );
	}

/**
	 * Create a unique identifier for a given URL.
	 * This is used for the "mobile items"
	 *
	 * @since  3.5
	 * @author Grégory Viguier
	 *
	 * @param  string $url A URL.
	 * @return string
	 */
	protected function get_url_identifier( $url ) {
		if ( ! isset( $this->cache_query_strings ) ) {
			$this->cache_query_strings = array_fill_keys( get_rocket_cache_query_string(), '' );

ksort( $this->cache_query_strings );
		}

$path  = (array) wp_parse_url( $url );
		$query = isset( $path['query'] ) ? $path['query'] : '';
		$path  = isset( $path['path'] ) ? $path['path'] : '';
		$path  = strtolower( trailingslashit( $path ) );

if ( ! $this->cache_query_strings ) {
			return $path;
		}

parse_str( $query, $query_array );

$query_array = array_intersect_key( $query_array, $this->cache_query_strings );
		$query_array = array_merge( $this->cache_query_strings, $query_array );

return $path . '?' . http_build_query( $query_array );
	}

/**
	 * Get the name of the transient that stores the number of preloaded URLs.
	 *
	 * @since  3.5
	 * @author Grégory Viguier
	 *
	 * @return string
	 */
	protected function get_running_transient_name() {
		return sprintf( 'rocket_%s_preload_running', static::PRELOAD_ID );
	}
}

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