class-services.php
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<?php
namespace HM\BackUpWordPress;
/**
* A singleton to handle the registering, de-registering
* and storage of services
*/
class Services {
/**
* Store the current instance
*
* @access private
* @var object Services
* @static
*/
private static $instance;
/**
* The array of services
*
* Should be of the format array( __FILE__ => __CLASS__ );
*
* @access private
* @var array
* @static
*/
private $services = array();
/**
* The current schedule object
*
* @access private
* @var object Scheduled_Backup
*/
private $schedule;
/**
* Get the current instance
*
* @static
*/
public static function instance() {
if ( ! isset( self::$instance ) ) {
self::$instance = new Services;
}
return self::$instance;
}
/**
* Get the array of registered services
*
* @param Scheduled_Backup $schedule
* @return Service[]
*/
public static function get_services( Scheduled_Backup $schedule = null ) {
if ( is_null( $schedule ) ) {
return self::instance()->services;
}
self::instance()->schedule = $schedule;
return array_map( array( self::instance(), 'instantiate' ), self::instance()->services );
}
/**
* Register a new service
*
* @param $filepath
* @param $classname
* @return \WP_Error|boolean
*/
public static function register( $filepath, $classname ) {
if ( ! file_exists( $filepath ) ) {
return new \WP_Error( 'hmbkp_invalid_path_error', sprintf( __( 'Argument 1 for %s must be a valid filepath', 'backupwordpress' ), __METHOD__ ) );
}
self::instance()->services[ $filepath ] = $classname;
return true;
}
/**
* De-register an existing service
* @param string $filepath
* @return \WP_Error|boolean
*/
public static function unregister( $filepath ) {
if ( ! isset( self::instance()->services[ $filepath ] ) ) {
return new \WP_Error( 'hmbkp_unrecognized_service_error', sprintf( __( 'Argument 1 for %s must be a registered service', 'backupwordpress' ), __METHOD__ ) );
}
unset( self::instance()->services[ $filepath ] );
return true;
}
/**
* Instantiate the individual service classes
*
* @param string $classname
*
* @return array An array of instantiated classes
*/
private static function instantiate( $classname ) {
if ( ! class_exists( $classname ) ) {
return new \WP_Error( 'hmbkp_invalid_type_error', sprintf( __( 'Argument 1 for %s must be a valid class', 'backupwordpress' ), __METHOD__ ) );
}
/**
* @var Service
*/
$class = new $classname( self::instance()->schedule );
return $class;
}
}