jetpack / _inc / lib / core-api / wpcom-endpoints / class-wpcom-rest-api-v2-endpoint-agent-guidelines-ai.php

class-wpcom-rest-api-v2-endpoint-agent-guidelines-ai.php in Jetpack – WP Security, Backup, Speed, & Growth 16.3-a.7, at _inc/lib/core-api/wpcom-endpoints/class-wpcom-rest-api-v2-endpoint-agent-guidelines-ai.php

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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	use Automattic\Jetpack\Connection\Manager;
13	use Automattic\Jetpack\Status\Host;
14
15	if ( ! defined( 'ABSPATH' ) ) {
16	exit( 0 );
17	}
18
19	/**
20	* Class WPCOM_REST_API_V2_Endpoint_Agent_Guidelines_AI
21	*/
22	class WPCOM_REST_API_V2_Endpoint_Agent_Guidelines_AI extends WP_REST_Controller {
23	/**
24	* Namespace prefix.
25	*
26	* @var string
27	*/
28	public $namespace = 'wpcom/v2';
29
30	/**
31	* Endpoint base route.
32	*
33	* @var string
34	*/
35	public $rest_base = 'jetpack-ai/suggest-guidelines';
36
37	/**
38	* Constructor.
39	*/
40	public function __construct() {
41	$this->is_wpcom = true;
42	$this->wpcom_is_wpcom_only_endpoint = true;
43
44	add_action( 'rest_api_init', array( $this, 'maybe_register_routes' ) );
45	}
46
47	/**
48	* Register routes on `rest_api_init`, gating on the AI feature state.
49	*
50	* The Jetpack_AI_Helper check (which loads the helper and instantiates
51	* Status/Host classes) runs here rather than in the constructor so that code
52	* is only loaded when the REST API is actually in use, not on every
53	* front-end, cron, or login request.
54	*/
55	public function maybe_register_routes() {
56	if ( ! class_exists( 'Jetpack_AI_Helper' ) ) {
57	require_once JETPACK__PLUGIN_DIR . '_inc/lib/class-jetpack-ai-helper.php';
58	}
59
60	// Intentionally gated to Simple, Atomic, and WordPress VIP sites only.
61	// Broader self-hosted Jetpack support is deferred — we want to roll out
62	// on these platforms first before opening to all connected sites.
63	if ( ! \Jetpack_AI_Helper::is_enabled_for_content_guidelines() ) {
64	return;
65	}
66
67	$this->register_routes();
68	}
69
70	/**
71	* Register routes.
72	*/
73	public function register_routes() {
74	register_rest_route(
75	$this->namespace,
76	'/' . $this->rest_base,
77	array(
78	'methods' => WP_REST_Server::CREATABLE,
79	'callback' => array( $this, 'suggest_guidelines' ),
80	'permission_callback' => array( $this, 'permission_callback' ),
81	'args' => array(
82	'categories' => array(
83	'description' => __( 'Categories to generate guidelines for.', 'jetpack' ),
84	'type' => 'object',
85	'required' => true,
86	),
87	),
88	)
89	);
90	}
91
92	/**
93	* Permission check — require manage_options, plus a connected user account
94	* on sites that proxy the request to WordPress.com over the connection.
95	*
96	* @return bool\|WP_Error
97	*/
98	public function permission_callback() {
99	if ( ! current_user_can( 'manage_options' ) ) {
100	return false;
101	}
102
103	// suggest_guidelines() signs with the user token off Simple, so without a
104	// user connection there is no identity to present and WordPress.com rejects
105	// the request on private sites.
106	if ( ! ( new Host() )->is_wpcom_simple() && ! ( new Manager() )->is_user_connected() ) {
107	return new WP_Error(
108	'rest_cannot_suggest_guidelines',
109	__( 'Please connect your user account to WordPress.com', 'jetpack' ),
110	array( 'status' => rest_authorization_required_code() )
111	);
112	}
113
114	return true;
115	}
116
117	/**
118	* Proxy the suggest-guidelines request to wpcom.
119	*
120	* @param WP_REST_Request $request The request object.
121	* @return mixed\|WP_Error
122	*/
123	public function suggest_guidelines( $request ) {
124	$blog_id = \Jetpack_Options::get_option( 'id' );
125
126	$body = array(
127	'categories' => $request->get_param( 'categories' ),
128	);
129
130	$path = sprintf( '/sites/%d/jetpack-ai/suggest-guidelines', $blog_id ) . '?force=wpcom';
131	$args = array(
132	'method' => 'POST',
133	'headers' => array( 'content-type' => 'application/json' ),
134	'timeout' => 90,
135	);
136
137	// On a private site WordPress.com resolves access from the requesting user,
138	// and a blog token carries no user_id — so the request is rejected before
139	// the endpoint runs, and again on the internal AI proxy dispatch. Signing
140	// as the user clears both, because the identity holds for the whole request.
141	// permission_callback() has already established that a user token exists.
142	//
143	// Simple sites keep the blog-token call: it short-circuits to an in-process
144	// WPCOM_API_Direct dispatch that never leaves the request, so the logged-in
145	// user is already present and there is no connection to authenticate against.
146	if ( ( new Host() )->is_wpcom_simple() ) {
147	$response = Client::wpcom_json_api_request_as_blog(
148	$path,
149	'2',
150	$args,
151	wp_json_encode( $body, JSON_UNESCAPED_SLASHES ),
152	'wpcom'
153	);
154	} else {
155	$response = Client::wpcom_json_api_request_as_user(
156	$path,
157	'2',
158	$args,
159	wp_json_encode( $body, JSON_UNESCAPED_SLASHES ),
160	'wpcom'
161	);
162	}
163
164	if ( is_wp_error( $response ) ) {
165	return $response;
166	}
167
168	$status_code = wp_remote_retrieve_response_code( $response );
169	$body_str = wp_remote_retrieve_body( $response );
170	$data = json_decode( $body_str, true );
171
172	if ( $status_code !== 200 ) {
173	$message = is_array( $data ) && isset( $data['message'] ) ? $data['message'] : __( 'Failed to generate guidelines.', 'jetpack' );
174	$code = is_array( $data ) && isset( $data['code'] ) ? $data['code'] : 'upstream_error';
175	return new WP_Error( $code, $message, array( 'status' => $status_code ) );
176	}
177
178	if ( JSON_ERROR_NONE !== json_last_error() ) {
179	return new WP_Error(
180	'invalid_response',
181	__( 'The guidelines service returned a malformed response.', 'jetpack' ),
182	array( 'status' => 502 )
183	);
184	}
185
186	return $data;
187	}
188	}
189
190	wpcom_rest_api_v2_load_plugin( 'WPCOM_REST_API_V2_Endpoint_Agent_Guidelines_AI' );
191