<?php
/**
* WP Async Request
*
* @package WP-Background-Processing
*/
/*
Library URI: https://github.com/deliciousbrains/wp-background-processing/blob/fbbc56f2480910d7959972ec9ec0819a13c6150a/classes/wp-async-request.php
Author: Delicious Brains Inc.
Author URI: https://deliciousbrains.com/
License: GNU General Public License v2.0
License URI: https://github.com/deliciousbrains/wp-background-processing/commit/126d7945dd3d39f39cb6488ca08fe1fb66cb351a
*/
if ( ! class_exists( 'WP_Async_Request' ) ) {
/**
* Abstract WP_Async_Request class.
*
* @abstract
*/
abstract class WP_Async_Request {
/**
* Prefix
*
* (default value: 'wp')
*
* @var string
* @access protected
*/
protected $prefix = 'wp';
/**
* Action
*
* (default value: 'async_request')
*
* @var string
* @access protected
*/
protected $action = 'async_request';
/**
* Identifier
*
* @var mixed
* @access protected
*/
protected $identifier;
/**
* Data
*
* (default value: array())
*
* @var array
* @access protected
*/
protected $data = array();
/**
* Initiate new async request
*/
public function __construct() {
$this->identifier = $this->prefix . '_' . $this->action;
add_action( 'wp_ajax_' . $this->identifier, array( $this, 'maybe_handle' ) );
add_action( 'wp_ajax_nopriv_' . $this->identifier, array( $this, 'maybe_handle' ) );
}
/**
* Set data used during the request
*
* @param array $data Data.
*
* @return $this
*/
public function data( $data ) {
$this->data = $data;
return $this;
}
/**
* Dispatch the async request
*
* @return array|WP_Error
*/
public function dispatch() {
$url = add_query_arg( $this->get_query_args(), $this->get_query_url() );
$args = $this->get_post_args();
return wp_remote_post( esc_url_raw( $url ), $args );
}
/**
* Get query args
*
* @return array
*/
protected function get_query_args() {
if ( property_exists( $this, 'query_args' ) ) {
return $this->query_args;
}
return array(
'action' => $this->identifier,
'nonce' => wp_create_nonce( $this->identifier ),
);
}
/**
* Get query URL
*
* @return string
*/
protected function get_query_url() {
if ( property_exists( $this, 'query_url' ) ) {
return $this->query_url;
}
return admin_url( 'admin-ajax.php' );
}
/**
* Get post args
*
* @return array
*/
protected function get_post_args() {
if ( property_exists( $this, 'post_args' ) ) {
return $this->post_args;
}
return array(
'timeout' => 0.01,
'blocking' => false,
'body' => $this->data,
'cookies' => $_COOKIE,
'sslverify' => apply_filters( 'https_local_ssl_verify', false ),
);
}
/**
* Maybe handle
*
* Check for correct nonce and pass to handler.
*/
public function maybe_handle() {
// Don't lock up other requests while processing
session_write_close();
check_ajax_referer( $this->identifier, 'nonce' );
$this->handle();
wp_die();
}
/**
* Handle
*
* Override this method to perform any actions required
* during the async request.
*/
abstract protected function handle();
}
}