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<?php
/**
* KKART-API endpoint handler.
*
* This handles API related functionality in Kkart.
* - kkart-api endpoint - Commonly used by Payment gateways for callbacks.
* - Legacy REST API - Deprecated in 2.6.0. @see class-kkart-legacy-api.php
* - WP REST API - The main REST API in Kkart which is built on top of the WP REST API.
*
* @package Kkart\RestApi
* @since 2.0.0
*/
defined( 'ABSPATH' ) || exit;
/**
* KKART_API class.
*/
class KKART_API extends KKART_Legacy_API {
/**
* Init the API by setting up action and filter hooks.
*/
public function init() {
parent::init();
add_action( 'init', array( $this, 'add_endpoint' ), 0 );
add_filter( 'query_vars', array( $this, 'add_query_vars' ), 0 );
add_action( 'parse_request', array( $this, 'handle_api_requests' ), 0 );
add_action( 'rest_api_init', array( $this, 'register_wp_admin_settings' ) );
}
/**
* Get the version of the REST API package being ran. Since API package was merged into core, this now follows KKART version.
*
* @since 3.7.0
* @return string|null
*/
public function get_rest_api_package_version() {
if ( ! $this->is_rest_api_loaded() ) {
return null;
}
if ( method_exists( \Automattic\Kkart\RestApi\Server::class, 'get_path' ) ) {
$path = \Automattic\Kkart\RestApi\Server::get_path();
if ( 0 === strpos( $path, __DIR__ ) ) {
// We are loading API from included version.
return KKART()->version;
}
}
// We are loading API from external plugin.
return \Automattic\Kkart\RestApi\Package::get_version();
}
/**
* Get the version of the REST API package being ran.
*
* @since 3.7.0
* @return string
*/
public function get_rest_api_package_path() {
if ( ! $this->is_rest_api_loaded() ) {
return null;
}
if ( method_exists( \Automattic\Kkart\RestApi\Server::class, 'get_path' ) ) {
// We are loading API from included version.
return \Automattic\Kkart\RestApi\Server::get_path();
}
// We are loading API from external plugin.
return \Automattic\Kkart\RestApi\Package::get_path();
}
/**
* Return if the rest API classes were already loaded.
*
* @since 3.7.0
* @return boolean
*/
protected function is_rest_api_loaded() {
return class_exists( '\Automattic\Kkart\RestApi\Server', false );
}
/**
* Get data from a Kkart API endpoint.
*
* @since 3.7.0
* @param string $endpoint Endpoint.
* @param array $params Params to passwith request.
* @return array|\WP_Error
*/
public function get_endpoint_data( $endpoint, $params = array() ) {
if ( ! $this->is_rest_api_loaded() ) {
return new WP_Error( 'rest_api_unavailable', __( 'The Rest API is unavailable.', 'kkart' ) );
}
$request = new \WP_REST_Request( 'GET', $endpoint );
if ( $params ) {
$request->set_query_params( $params );
}
$response = rest_do_request( $request );
$server = rest_get_server();
$json = wp_json_encode( $server->response_to_data( $response, false ) );
return json_decode( $json, true );
}
/**
* Add new query vars.
*
* @since 2.0
* @param array $vars Query vars.
* @return string[]
*/
public function add_query_vars( $vars ) {
$vars = parent::add_query_vars( $vars );
$vars[] = 'kkart-api';
return $vars;
}
/**
* KKART API for payment gateway IPNs, etc.
*
* @since 2.0
*/
public static function add_endpoint() {
parent::add_endpoint();
add_rewrite_endpoint( 'kkart-api', EP_ALL );
}
/**
* API request - Trigger any API requests.
*
* @since 2.0
* @version 2.4
*/
public function handle_api_requests() {
global $wp;
if ( ! empty( $_GET['kkart-api'] ) ) { // WPCS: input var okay, CSRF ok.
$wp->query_vars['kkart-api'] = sanitize_key( wp_unslash( $_GET['kkart-api'] ) ); // WPCS: input var okay, CSRF ok.
}
// kkart-api endpoint requests.
if ( ! empty( $wp->query_vars['kkart-api'] ) ) {
// Buffer, we won't want any output here.
ob_start();
// No cache headers.
kkart_nocache_headers();
// Clean the API request.
$api_request = strtolower( kkart_clean( $wp->query_vars['kkart-api'] ) );
// Make sure gateways are available for request.
KKART()->payment_gateways();
// Trigger generic action before request hook.
do_action( 'kkart_api_request', $api_request );
// Is there actually something hooked into this API request? If not trigger 400 - Bad request.
status_header( has_action( 'kkart_api_' . $api_request ) ? 200 : 400 );
// Trigger an action which plugins can hook into to fulfill the request.
do_action( 'kkart_api_' . $api_request );
// Done, clear buffer and exit.
ob_end_clean();
die( '-1' );
}
}
/**
* Register KKART settings from WP-API to the REST API.
*
* @since 3.0.0
*/
public function register_wp_admin_settings() {
$pages = KKART_Admin_Settings::get_settings_pages();
foreach ( $pages as $page ) {
new KKART_Register_WP_Admin_Settings( $page, 'page' );
}
$emails = KKART_Emails::instance();
foreach ( $emails->get_emails() as $email ) {
new KKART_Register_WP_Admin_Settings( $email, 'email' );
}
}
}