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<?php
namespace Elementor\Data\Base;
use Elementor\Data\Manager;
use WP_REST_Server;
abstract class Endpoint {
const AVAILABLE_METHODS = [
WP_REST_Server::READABLE,
WP_REST_Server::CREATABLE,
WP_REST_Server::EDITABLE,
WP_REST_Server::DELETABLE,
WP_REST_Server::ALLMETHODS,
];
/**
* Controller of current endpoint.
*
* @var \Elementor\Data\Base\Controller
*/
protected $controller;
/**
* Loaded sub endpoint(s).
*
* @var \Elementor\Data\Base\SubEndpoint[]
*/
private $sub_endpoints = [];
/**
* Get format suffix.
*
* Examples:
* '{one_parameter_name}'.
* '{one_parameter_name}/{two_parameter_name}/'.
* '{one_parameter_name}/whatever/anything/{two_parameter_name}/' and so on for each endpoint or sub-endpoint.
*
* @return string current location will later be added automatically.
*/
public static function get_format() {
return '';
}
/**
* Endpoint constructor.
*
* @param \Elementor\Data\Base\Controller $controller
*
* @throws \Exception If invalid controller.
*/
public function __construct( $controller ) {
if ( ! ( $controller instanceof Controller ) ) {
throw new \Exception( 'Invalid controller.' );
}
$this->controller = $controller;
$this->register();
}
/**
* Get endpoint name.
*
* @return string
*/
abstract public function get_name();
/**
* Get base route.
*
* Removing 'index' from endpoint.
*
* @return string
*/
public function get_base_route() {
$endpoint_name = $this->get_name();
// TODO: Allow this only for internal routes.
// TODO: Make difference between internal and external endpoints.
if ( 'index' === $endpoint_name ) {
$endpoint_name = '';
}
return '/' . $this->controller->get_rest_base() . '/' . $endpoint_name;
}
/**
* Register the endpoint.
*
* By default: register get items route.
*
* @throws \Exception If invalid endpoint registered.
*/
protected function register() {
$this->register_items_route();
}
/**
* Register sub endpoint.
*
* @param string $route
* @param string $endpoint_class
*
* @return \Elementor\Data\Base\SubEndpoint
* @throws \Exception If invalid sub endpoint registered.
*/
protected function register_sub_endpoint( $route, $endpoint_class ) {
$endpoint_instance = new $endpoint_class( $route, $this );
if ( ! ( $endpoint_instance instanceof SubEndpoint ) ) {
throw new \Exception( 'Invalid endpoint instance.' );
}
$endpoint_route = $route . '/' . $endpoint_instance->get_name();
$this->sub_endpoints[ $endpoint_route ] = $endpoint_instance;
$component_name = $endpoint_instance->controller->get_rest_base();
$parent_instance = $endpoint_instance->get_parent();
$parent_name = $endpoint_instance->get_name();
$parent_format_suffix = $parent_instance::get_format();
$current_format_suffix = $endpoint_instance::get_format();
$command = $component_name . '/' . $parent_name;
$format = $component_name . '/' . $parent_format_suffix . '/' . $parent_name . '/' . $current_format_suffix;
Manager::instance()->register_endpoint_format( $command, $format );
return $endpoint_instance;
}
/**
* Base callback.
*
* All reset requests from the client should pass this function.
*
* @param string $methods
* @param \WP_REST_Request $request
* @param bool $is_multi
*
* @return mixed|\WP_Error|\WP_HTTP_Response|\WP_REST_Response
* @throws \Exception If invalid method.
*/
public function base_callback( $methods, $request, $is_multi = false ) {
// TODO: Find better solution.
$json_params = $request->get_json_params();
if ( $json_params ) {
$request->set_body_params( $json_params );
}
// TODO: Handle permission callback.
switch ( $methods ) {
case WP_REST_Server::READABLE:
$result = $is_multi ? $this->get_items( $request ) : $this->get_item( $request->get_param( 'id' ), $request );
break;
case WP_REST_Server::CREATABLE:
$result = $is_multi ? $this->create_items( $request ) : $this->create_item( $request->get_param( 'id' ), $request );
break;
case WP_REST_Server::EDITABLE:
$result = $is_multi ? $this->update_items( $request ) : $this->update_item( $request->get_param( 'id' ), $request );
break;
case WP_REST_Server::DELETABLE:
$result = $is_multi ? $this->delete_items( $request ) : $this->delete_item( $request->get_param( 'id' ), $request );
break;
default:
throw new \Exception( 'Invalid method.' );
}
return rest_ensure_response( $result );
}
/**
* Retrieves a collection of items.
*
* @param \WP_REST_Request $request Full data about the request.
*
* @return \WP_Error|\WP_REST_Response Response object on success, or WP_Error object on failure.
*/
public function get_items( $request ) {
return $this->controller->get_items( $request );
}
/**
* Retrieves one item from the collection.
*
* @param string $id
* @param \WP_REST_Request $request Full data about the request.
*
* @return \WP_Error|\WP_REST_Response Response object on success, or WP_Error object on failure.
*/
public function get_item( $id, $request ) {
return $this->controller->get_item( $request );
}
/**
* Get permission callback.
*
* By default get permission callback from the controller.
*
* @param \WP_REST_Request $request Full data about the request.
*
* @return boolean
*/
public function get_permission_callback( $request ) {
return $this->controller->get_permission_callback( $request );
}
/**
* Creates one item.
*
* @param string $id id of request item.
* @param \WP_REST_Request $request Full data about the request.
*
* @return \WP_Error|\WP_REST_Response Response object on success, or WP_Error object on failure.
*/
public function create_item( $id, $request ) {
return $this->controller->create_item( $request );
}
/**
* Creates multiple items.
*
* @param \WP_REST_Request $request Full data about the request.
*
* @return \WP_Error|\WP_REST_Response Response object on success, or WP_Error object on failure.
*/
public function create_items( $request ) {
return $this->controller->create_items( $request );
}
/**
* Updates one item.
*
* @param string $id id of request item.
* @param \WP_REST_Request $request Full data about the request.
*
* @return \WP_Error|\WP_REST_Response Response object on success, or WP_Error object on failure.
*/
public function update_item( $id, $request ) {
return $this->controller->update_item( $request );
}
/**
* Updates multiple items.
*
* @param \WP_REST_Request $request Full data about the request.
*
* @return \WP_Error|\WP_REST_Response Response object on success, or WP_Error object on failure.
*/
public function update_items( $request ) {
return $this->controller->update_items( $request );
}
/**
* Delete one item.
*
* @param string $id id of request item.
* @param \WP_REST_Request $request Full data about the request.
*
* @return \WP_Error|\WP_REST_Response Response object on success, or WP_Error object on failure.
*/
public function delete_item( $id, $request ) {
return $this->controller->delete_item( $request );
}
/**
* Delete multiple items.
*
* @param \WP_REST_Request $request Full data about the request.
*
* @return \WP_Error|\WP_REST_Response Response object on success, or WP_Error object on failure.
*/
public function delete_items( $request ) {
return $this->controller->delete_items( $request );
}
/**
* Register item route.
*
* @param string $methods
* @param array $args
* @param string $route
*
* @throws \Exception If invalid method.
*/
public function register_item_route( $methods = WP_REST_Server::READABLE, $args = [], $route = '/' ) {
$args = array_merge( [
'id' => [
'description' => 'Unique identifier for the object.',
'type' => 'string',
],
], $args );
if ( isset( $args['id'] ) && $args['id'] ) {
$route .= '(?P<id>[\w]+)/';
}
$this->register_route( $route, $methods, function ( $request ) use ( $methods ) {
return $this->base_callback( $methods, $request );
}, $args );
}
/**
* Register items route.
*
* @param string $methods
*
* @throws \Exception If invalid method.
*/
public function register_items_route( $methods = WP_REST_Server::READABLE ) {
$this->register_route( '', $methods, function ( $request ) use ( $methods ) {
return $this->base_callback( $methods, $request, true );
} );
}
/**
* Register route.
*
* @param string $route
* @param string $methods
* @param null $callback
* @param array $args
*
* @return bool
* @throws \Exception If invalid method.
*/
public function register_route( $route = '', $methods = WP_REST_Server::READABLE, $callback = null, $args = [] ) {
if ( ! in_array( $methods, self::AVAILABLE_METHODS, true ) ) {
throw new \Exception( 'Invalid method.' );
}
$route = $this->get_base_route() . $route;
return register_rest_route( $this->controller->get_namespace(), $route, [
[
'args' => $args,
'methods' => $methods,
'callback' => $callback,
'permission_callback' => function ( $request ) {
return $this->get_permission_callback( $request );
},
],
] );
}
}