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| 1 | <?php |
| 2 | /** |
| 3 | * REST API proxy endpoint for AI-powered content guidelines suggestions. |
| 4 | * |
| 5 | * Proxies requests to the wpcom endpoint that generates guidelines |
| 6 | * using site content analysis. |
| 7 | * |
| 8 | * @package automattic/jetpack |
| 9 | */ |
| 10 | |
| 11 | use Automattic\Jetpack\Connection\Client; |
| 12 | |
| 13 | if ( ! defined( 'ABSPATH' ) ) { |
| 14 | exit( 0 ); |
| 15 | } |
| 16 | |
| 17 | /** |
| 18 | * Class WPCOM_REST_API_V2_Endpoint_Agent_Guidelines_AI |
| 19 | */ |
| 20 | class WPCOM_REST_API_V2_Endpoint_Agent_Guidelines_AI extends WP_REST_Controller { |
| 21 | /** |
| 22 | * Namespace prefix. |
| 23 | * |
| 24 | * @var string |
| 25 | */ |
| 26 | public $namespace = 'wpcom/v2'; |
| 27 | |
| 28 | /** |
| 29 | * Endpoint base route. |
| 30 | * |
| 31 | * @var string |
| 32 | */ |
| 33 | public $rest_base = 'jetpack-ai/suggest-guidelines'; |
| 34 | |
| 35 | /** |
| 36 | * Constructor. |
| 37 | */ |
| 38 | public function __construct() { |
| 39 | $this->is_wpcom = true; |
| 40 | $this->wpcom_is_wpcom_only_endpoint = true; |
| 41 | |
| 42 | add_action( 'rest_api_init', array( $this, 'maybe_register_routes' ) ); |
| 43 | } |
| 44 | |
| 45 | /** |
| 46 | * Register routes on `rest_api_init`, gating on the AI feature state. |
| 47 | * |
| 48 | * The Jetpack_AI_Helper check (which loads the helper and instantiates |
| 49 | * Status/Host classes) runs here rather than in the constructor so that code |
| 50 | * is only loaded when the REST API is actually in use, not on every |
| 51 | * front-end, cron, or login request. |
| 52 | */ |
| 53 | public function maybe_register_routes() { |
| 54 | if ( ! class_exists( 'Jetpack_AI_Helper' ) ) { |
| 55 | require_once JETPACK__PLUGIN_DIR . '_inc/lib/class-jetpack-ai-helper.php'; |
| 56 | } |
| 57 | |
| 58 | // Intentionally gated to Simple and Atomic sites only. |
| 59 | // Self-hosted Jetpack support is deferred — we want to roll out |
| 60 | // on WordPress.com platforms first before opening to all connected sites. |
| 61 | if ( ! \Jetpack_AI_Helper::is_enabled() ) { |
| 62 | return; |
| 63 | } |
| 64 | |
| 65 | $this->register_routes(); |
| 66 | } |
| 67 | |
| 68 | /** |
| 69 | * Register routes. |
| 70 | */ |
| 71 | public function register_routes() { |
| 72 | register_rest_route( |
| 73 | $this->namespace, |
| 74 | '/' . $this->rest_base, |
| 75 | array( |
| 76 | 'methods' => WP_REST_Server::CREATABLE, |
| 77 | 'callback' => array( $this, 'suggest_guidelines' ), |
| 78 | 'permission_callback' => array( $this, 'permission_callback' ), |
| 79 | 'args' => array( |
| 80 | 'categories' => array( |
| 81 | 'description' => __( 'Categories to generate guidelines for.', 'jetpack' ), |
| 82 | 'type' => 'object', |
| 83 | 'required' => true, |
| 84 | ), |
| 85 | ), |
| 86 | ) |
| 87 | ); |
| 88 | } |
| 89 | |
| 90 | /** |
| 91 | * Permission check — require manage_options. |
| 92 | * |
| 93 | * @return bool |
| 94 | */ |
| 95 | public function permission_callback() { |
| 96 | return current_user_can( 'manage_options' ); |
| 97 | } |
| 98 | |
| 99 | /** |
| 100 | * Proxy the suggest-guidelines request to wpcom. |
| 101 | * |
| 102 | * @param WP_REST_Request $request The request object. |
| 103 | * @return mixed|WP_Error |
| 104 | */ |
| 105 | public function suggest_guidelines( $request ) { |
| 106 | $blog_id = \Jetpack_Options::get_option( 'id' ); |
| 107 | |
| 108 | $body = array( |
| 109 | 'categories' => $request->get_param( 'categories' ), |
| 110 | ); |
| 111 | |
| 112 | $response = Client::wpcom_json_api_request_as_blog( |
| 113 | sprintf( '/sites/%d/jetpack-ai/suggest-guidelines', $blog_id ) . '?force=wpcom', |
| 114 | '2', |
| 115 | array( |
| 116 | 'method' => 'POST', |
| 117 | 'headers' => array( 'content-type' => 'application/json' ), |
| 118 | 'timeout' => 90, |
| 119 | ), |
| 120 | wp_json_encode( $body, JSON_UNESCAPED_SLASHES ), |
| 121 | 'wpcom' |
| 122 | ); |
| 123 | |
| 124 | if ( is_wp_error( $response ) ) { |
| 125 | return $response; |
| 126 | } |
| 127 | |
| 128 | $status_code = wp_remote_retrieve_response_code( $response ); |
| 129 | $body_str = wp_remote_retrieve_body( $response ); |
| 130 | $data = json_decode( $body_str, true ); |
| 131 | |
| 132 | if ( $status_code !== 200 ) { |
| 133 | $message = is_array( $data ) && isset( $data['message'] ) ? $data['message'] : __( 'Failed to generate guidelines.', 'jetpack' ); |
| 134 | $code = is_array( $data ) && isset( $data['code'] ) ? $data['code'] : 'upstream_error'; |
| 135 | return new WP_Error( $code, $message, array( 'status' => $status_code ) ); |
| 136 | } |
| 137 | |
| 138 | if ( JSON_ERROR_NONE !== json_last_error() ) { |
| 139 | return new WP_Error( |
| 140 | 'invalid_response', |
| 141 | __( 'The guidelines service returned a malformed response.', 'jetpack' ), |
| 142 | array( 'status' => 502 ) |
| 143 | ); |
| 144 | } |
| 145 | |
| 146 | return $data; |
| 147 | } |
| 148 | } |
| 149 | |
| 150 | wpcom_rest_api_v2_load_plugin( 'WPCOM_REST_API_V2_Endpoint_Agent_Guidelines_AI' ); |