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class-jetpack-ai-helper.php
530 lines
| 1 | <?php |
| 2 | /** |
| 3 | * API helper for the AI blocks. |
| 4 | * |
| 5 | * @package automattic/jetpack |
| 6 | * @since 11.8 |
| 7 | */ |
| 8 | |
| 9 | use Automattic\Jetpack\Connection\Client; |
| 10 | use Automattic\Jetpack\Connection\Manager; |
| 11 | use Automattic\Jetpack\Search\Plan as Search_Plan; |
| 12 | use Automattic\Jetpack\Status; |
| 13 | use Automattic\Jetpack\Status\Visitor; |
| 14 | |
| 15 | // Required directly rather than relying on the plugin bootstrap: on |
| 16 | // WordPress.com Simple this helper is loaded outside load-jetpack.php |
| 17 | // (see the GUIDELINES_BANNER_DISMISSED_META_KEY note below). |
| 18 | require_once __DIR__ . '/class-jetpack-ai-settings.php'; |
| 19 | |
| 20 | /** |
| 21 | * Class Jetpack_AI_Helper |
| 22 | * |
| 23 | * @since 11.8 |
| 24 | */ |
| 25 | class Jetpack_AI_Helper { |
| 26 | /** |
| 27 | * User meta key storing whether the user dismissed the Content Guidelines |
| 28 | * AI empty-state banner. Written by the guidelines-banner-dismissed REST |
| 29 | * endpoint and read by the Content Guidelines admin-page preload. |
| 30 | * |
| 31 | * Lives here rather than on the endpoint class because on WordPress.com |
| 32 | * Simple the wpcom-endpoints classes are only loaded in REST requests, |
| 33 | * while the preload needs the key during admin page loads. |
| 34 | * |
| 35 | * @since 16.1 |
| 36 | * |
| 37 | * @var string |
| 38 | */ |
| 39 | const GUIDELINES_BANNER_DISMISSED_META_KEY = 'jetpack_content_guidelines_ai_banner_dismissed'; |
| 40 | |
| 41 | /** |
| 42 | * Allow new completion every X seconds. Will return cached result otherwise. |
| 43 | * |
| 44 | * @var int |
| 45 | */ |
| 46 | public static $text_completion_cooldown_seconds = 15; |
| 47 | |
| 48 | /** |
| 49 | * Cache images for a prompt for a month. |
| 50 | * |
| 51 | * @var int |
| 52 | */ |
| 53 | public static $image_generation_cache_timeout = MONTH_IN_SECONDS; |
| 54 | |
| 55 | /** |
| 56 | * Cache AI-assistant feature for 60 seconds. |
| 57 | * |
| 58 | * @var int |
| 59 | */ |
| 60 | public static $ai_assistant_feature_cache_timeout = 60; |
| 61 | |
| 62 | /** |
| 63 | * Cache AI-assistant errors for ten seconds. |
| 64 | * |
| 65 | * @var int |
| 66 | */ |
| 67 | public static $ai_assistant_feature_error_cache_timeout = 10; |
| 68 | |
| 69 | /** |
| 70 | * Stores the number of JetpackAI calls in case we want to mark AI-assisted posts some way. |
| 71 | * |
| 72 | * @var int |
| 73 | */ |
| 74 | public static $post_meta_with_ai_generation_number = '_jetpack_ai_calls'; |
| 75 | |
| 76 | /** |
| 77 | * Storing the error to prevent repeated requests to WPCOM after failure. |
| 78 | * |
| 79 | * @var null|WP_Error |
| 80 | */ |
| 81 | private static $ai_assistant_failed_request = null; |
| 82 | |
| 83 | /** |
| 84 | * Checks if a given request is allowed to get AI data from WordPress.com. |
| 85 | * |
| 86 | * @param WP_REST_Request $request Full details about the request. |
| 87 | * |
| 88 | * @return true|WP_Error True if the request has access, WP_Error object otherwise. |
| 89 | */ |
| 90 | public static function get_status_permission_check( $request ) { // phpcs:ignore Generic.CodeAnalysis.UnusedFunctionParameter, VariableAnalysis.CodeAnalysis.VariableAnalysis.UnusedVariable |
| 91 | |
| 92 | /* |
| 93 | * This may need to be updated |
| 94 | * to take into account the different ways we can make requests |
| 95 | * (from a WordPress.com site, from a Jetpack site). |
| 96 | */ |
| 97 | if ( ! current_user_can( 'edit_posts' ) ) { |
| 98 | return new WP_Error( |
| 99 | 'rest_forbidden', |
| 100 | __( 'Sorry, you are not allowed to access Jetpack AI help on this site.', 'jetpack' ), |
| 101 | array( 'status' => rest_authorization_required_code() ) |
| 102 | ); |
| 103 | } |
| 104 | |
| 105 | return true; |
| 106 | } |
| 107 | |
| 108 | /** |
| 109 | * Return true if these features should be active on the current site. |
| 110 | * Currently, it's limited to WPCOM Simple and Atomic. |
| 111 | */ |
| 112 | public static function is_enabled() { |
| 113 | $default = false; |
| 114 | |
| 115 | if ( defined( 'IS_WPCOM' ) && IS_WPCOM ) { |
| 116 | $default = true; |
| 117 | } elseif ( ( new Automattic\Jetpack\Status\Host() )->is_woa_site() ) { |
| 118 | $default = true; |
| 119 | } |
| 120 | |
| 121 | // The jetpack_ai_enabled filter runs inside the helper; the host and |
| 122 | // master gates apply after the chain and cannot be filtered back on. |
| 123 | return Jetpack_AI_Settings::is_ai_enabled( $default ); |
| 124 | } |
| 125 | |
| 126 | /** |
| 127 | * Return true if the Content Guidelines AI surfaces should be active on the |
| 128 | * current site. |
| 129 | * |
| 130 | * Same platforms as is_enabled() (WPCOM Simple and Atomic), plus WordPress |
| 131 | * VIP sites. Kept separate from is_enabled() so widening Content Guidelines |
| 132 | * to VIP does not also open the general AI proxy endpoint there. |
| 133 | * |
| 134 | * @since 16.2 |
| 135 | * |
| 136 | * @return bool |
| 137 | */ |
| 138 | public static function is_enabled_for_content_guidelines() { |
| 139 | $default = false; |
| 140 | |
| 141 | if ( defined( 'IS_WPCOM' ) && IS_WPCOM ) { |
| 142 | $default = true; |
| 143 | } else { |
| 144 | $host = new Automattic\Jetpack\Status\Host(); |
| 145 | if ( $host->is_woa_site() || $host->is_vip_site() ) { |
| 146 | $default = true; |
| 147 | } |
| 148 | } |
| 149 | |
| 150 | // The jetpack_ai_enabled filter runs inside the helper; the host and |
| 151 | // master gates apply after the chain and cannot be filtered back on. |
| 152 | return Jetpack_AI_Settings::is_ai_enabled( $default ); |
| 153 | } |
| 154 | |
| 155 | /** |
| 156 | * Whether the current user has dismissed the Content Guidelines AI |
| 157 | * empty-state banner. |
| 158 | * |
| 159 | * @since 16.1 |
| 160 | * |
| 161 | * @return bool |
| 162 | */ |
| 163 | public static function is_guidelines_banner_dismissed() { |
| 164 | return (bool) get_user_meta( get_current_user_id(), self::GUIDELINES_BANNER_DISMISSED_META_KEY, true ); |
| 165 | } |
| 166 | |
| 167 | /** |
| 168 | * Return true if the AI chat feature should be active on the current site. |
| 169 | * |
| 170 | * @todo IS_WPCOM (the endpoints need to be updated too). |
| 171 | * |
| 172 | * @return bool |
| 173 | */ |
| 174 | public static function is_ai_chat_enabled() { |
| 175 | $default = false; |
| 176 | |
| 177 | $connection = new Manager(); |
| 178 | $plan = new Search_Plan(); |
| 179 | if ( $connection->is_connected() && $plan->supports_search() ) { |
| 180 | $default = true; |
| 181 | } |
| 182 | |
| 183 | /** |
| 184 | * Filter whether the AI chat feature is enabled in the Jetpack plugin. |
| 185 | * |
| 186 | * @since 12.6 |
| 187 | * |
| 188 | * @param bool $default Is AI chat enabled? Defaults to false. |
| 189 | */ |
| 190 | return apply_filters( 'jetpack_ai_chat_enabled', $default ); |
| 191 | } |
| 192 | |
| 193 | /** |
| 194 | * Get the name of the transient for image generation. Unique per prompt and allows for reuse of results for the same prompt across entire WPCOM. |
| 195 | * I expext "puppy" to always be from cache. |
| 196 | * |
| 197 | * @param string $prompt - Supplied prompt. |
| 198 | */ |
| 199 | public static function transient_name_for_image_generation( $prompt ) { |
| 200 | return 'jetpack_openai_image_' . md5( $prompt ); |
| 201 | } |
| 202 | |
| 203 | /** |
| 204 | * Get the name of the transient for text completion. Unique per user, but not per text. Serves more as a cooldown. |
| 205 | */ |
| 206 | public static function transient_name_for_completion() { |
| 207 | return 'jetpack_openai_completion_' . get_current_user_id(); // Cache for each user, so that other users dont get weird cached version from somebody else. |
| 208 | } |
| 209 | |
| 210 | /** |
| 211 | * Get the name of the transient for AI assistance feature. Unique per user. |
| 212 | * |
| 213 | * @param int $blog_id - Blog ID to get the transient name for. |
| 214 | * @return string |
| 215 | */ |
| 216 | public static function transient_name_for_ai_assistance_feature( $blog_id ) { |
| 217 | return 'jetpack_openai_ai_assistance_feature_' . $blog_id; |
| 218 | } |
| 219 | |
| 220 | /** |
| 221 | * Mark the edited post as "touched" by AI stuff. |
| 222 | * |
| 223 | * @param int $post_id Post ID for which the content is being generated. |
| 224 | * @return void |
| 225 | */ |
| 226 | private static function mark_post_as_ai_assisted( $post_id ) { |
| 227 | if ( ! $post_id ) { |
| 228 | return; |
| 229 | } |
| 230 | $previous = get_post_meta( $post_id, self::$post_meta_with_ai_generation_number, true ); |
| 231 | if ( ! $previous ) { |
| 232 | $previous = 0; |
| 233 | } elseif ( ! is_numeric( $previous ) ) { |
| 234 | // Data corrupted, nothing to do. |
| 235 | return; |
| 236 | } |
| 237 | $new_value = intval( $previous ) + 1; |
| 238 | update_post_meta( $post_id, self::$post_meta_with_ai_generation_number, $new_value ); |
| 239 | } |
| 240 | |
| 241 | /** |
| 242 | * Get text back from WordPress.com based off a starting text. |
| 243 | * |
| 244 | * @param string $content The content provided to send to the AI. |
| 245 | * @param int $post_id Post ID for which the content is being generated. |
| 246 | * @param bool $skip_cache Skip cache and force a new request. |
| 247 | * @return mixed |
| 248 | */ |
| 249 | public static function get_gpt_completion( $content, $post_id, $skip_cache = false ) { |
| 250 | $content = wp_strip_all_tags( $content ); |
| 251 | $cache = get_transient( self::transient_name_for_completion() ); |
| 252 | if ( $cache && ! $skip_cache ) { |
| 253 | return $cache; |
| 254 | } |
| 255 | |
| 256 | if ( ( new Status() )->is_offline_mode() ) { |
| 257 | return new WP_Error( |
| 258 | 'dev_mode', |
| 259 | __( 'Jetpack AI is not available in offline mode.', 'jetpack' ) |
| 260 | ); |
| 261 | } |
| 262 | |
| 263 | $site_id = Manager::get_site_id(); |
| 264 | if ( is_wp_error( $site_id ) ) { |
| 265 | return $site_id; |
| 266 | } |
| 267 | |
| 268 | if ( defined( 'IS_WPCOM' ) && IS_WPCOM ) { |
| 269 | if ( ! class_exists( 'OpenAI' ) ) { |
| 270 | \require_lib( 'openai' ); |
| 271 | } |
| 272 | |
| 273 | // Set the content for chatGPT endpoint |
| 274 | $data = array( |
| 275 | array( |
| 276 | 'role' => 'user', |
| 277 | 'content' => $content, |
| 278 | ), |
| 279 | ); |
| 280 | |
| 281 | $openai = new OpenAI( 'openai', array( 'post_id' => $post_id ) ); |
| 282 | $moderation_result = $openai->moderate( |
| 283 | implode( |
| 284 | ' ', |
| 285 | array_map( |
| 286 | function ( $msg ) { |
| 287 | return $msg['role'] === 'user' ? $msg['content'] : ''; |
| 288 | }, |
| 289 | $data |
| 290 | ) |
| 291 | ) |
| 292 | ); |
| 293 | |
| 294 | if ( is_wp_error( $moderation_result ) ) { |
| 295 | return $moderation_result; |
| 296 | } |
| 297 | |
| 298 | $max_tokens = 480; // Default |
| 299 | $result = $openai->request_chat_completion( $data, $max_tokens ); |
| 300 | |
| 301 | if ( is_wp_error( $result ) ) { |
| 302 | return $result; |
| 303 | } |
| 304 | |
| 305 | $response = $result->choices[0]->message->content; |
| 306 | |
| 307 | // In case of Jetpack we are setting a transient on the WPCOM and not the remote site. I think the 'get_current_user_id' may default for the connection owner at this point but we'll deal with this later. |
| 308 | set_transient( self::transient_name_for_completion(), $response, self::$text_completion_cooldown_seconds ); |
| 309 | self::mark_post_as_ai_assisted( $post_id ); |
| 310 | return $response; |
| 311 | } |
| 312 | |
| 313 | $response = Client::wpcom_json_api_request_as_user( |
| 314 | sprintf( '/sites/%d/jetpack-ai/completions', $site_id ), |
| 315 | 2, |
| 316 | array( |
| 317 | 'method' => 'post', |
| 318 | 'headers' => array( 'content-type' => 'application/json' ), |
| 319 | ), |
| 320 | wp_json_encode( |
| 321 | array( |
| 322 | 'content' => $content, |
| 323 | ), |
| 324 | JSON_UNESCAPED_SLASHES |
| 325 | ), |
| 326 | 'wpcom' |
| 327 | ); |
| 328 | |
| 329 | if ( is_wp_error( $response ) ) { |
| 330 | return $response; |
| 331 | } |
| 332 | |
| 333 | $data = json_decode( wp_remote_retrieve_body( $response ) ); |
| 334 | |
| 335 | if ( wp_remote_retrieve_response_code( $response ) >= 400 ) { |
| 336 | return new WP_Error( $data->code, $data->message, $data->data ); |
| 337 | } |
| 338 | |
| 339 | // Do not cache if it should be skipped. |
| 340 | if ( ! $skip_cache ) { |
| 341 | set_transient( self::transient_name_for_completion(), $data, self::$text_completion_cooldown_seconds ); |
| 342 | } |
| 343 | self::mark_post_as_ai_assisted( $post_id ); |
| 344 | |
| 345 | return $data; |
| 346 | } |
| 347 | |
| 348 | /** |
| 349 | * Get an array of image objects back from WordPress.com based off a prompt. |
| 350 | * |
| 351 | * @param string $prompt The prompt to generate images for. |
| 352 | * @param int $post_id Post ID for which the content is being generated. |
| 353 | * @return mixed |
| 354 | */ |
| 355 | public static function get_dalle_generation( $prompt, $post_id ) { |
| 356 | $cache = get_transient( self::transient_name_for_image_generation( $prompt ) ); |
| 357 | if ( $cache ) { |
| 358 | self::mark_post_as_ai_assisted( $post_id ); |
| 359 | return $cache; |
| 360 | } |
| 361 | |
| 362 | if ( ( new Status() )->is_offline_mode() ) { |
| 363 | return new WP_Error( |
| 364 | 'dev_mode', |
| 365 | __( 'Jetpack AI is not available in offline mode.', 'jetpack' ) |
| 366 | ); |
| 367 | } |
| 368 | |
| 369 | $site_id = Manager::get_site_id(); |
| 370 | if ( is_wp_error( $site_id ) ) { |
| 371 | return $site_id; |
| 372 | } |
| 373 | |
| 374 | if ( defined( 'IS_WPCOM' ) && IS_WPCOM ) { |
| 375 | if ( ! class_exists( 'OpenAI' ) ) { |
| 376 | \require_lib( 'openai' ); |
| 377 | } |
| 378 | |
| 379 | $result = ( new OpenAI( 'openai', array( 'post_id' => $post_id ) ) )->request_dalle_generation( $prompt ); |
| 380 | if ( is_wp_error( $result ) ) { |
| 381 | return $result; |
| 382 | } |
| 383 | set_transient( self::transient_name_for_image_generation( $prompt ), $result, self::$image_generation_cache_timeout ); |
| 384 | self::mark_post_as_ai_assisted( $post_id ); |
| 385 | return $result; |
| 386 | } |
| 387 | |
| 388 | $response = Client::wpcom_json_api_request_as_user( |
| 389 | sprintf( '/sites/%d/jetpack-ai/images/generations', $site_id ), |
| 390 | 2, |
| 391 | array( |
| 392 | 'method' => 'post', |
| 393 | 'headers' => array( 'content-type' => 'application/json' ), |
| 394 | ), |
| 395 | wp_json_encode( |
| 396 | array( |
| 397 | 'prompt' => $prompt, |
| 398 | ), |
| 399 | JSON_UNESCAPED_SLASHES |
| 400 | ), |
| 401 | 'wpcom' |
| 402 | ); |
| 403 | |
| 404 | if ( is_wp_error( $response ) ) { |
| 405 | return $response; |
| 406 | } |
| 407 | |
| 408 | $data = json_decode( wp_remote_retrieve_body( $response ) ); |
| 409 | |
| 410 | if ( wp_remote_retrieve_response_code( $response ) >= 400 ) { |
| 411 | return new WP_Error( $data->code, $data->message, $data->data ); |
| 412 | } |
| 413 | set_transient( self::transient_name_for_image_generation( $prompt ), $data, self::$image_generation_cache_timeout ); |
| 414 | self::mark_post_as_ai_assisted( $post_id ); |
| 415 | |
| 416 | return $data; |
| 417 | } |
| 418 | |
| 419 | /** |
| 420 | * Get an object with useful data about the requests made to the AI. |
| 421 | * |
| 422 | * @return mixed |
| 423 | */ |
| 424 | public static function get_ai_assistance_feature() { |
| 425 | if ( defined( 'IS_WPCOM' ) && IS_WPCOM ) { |
| 426 | // On WPCOM, we can get the ID from the site. |
| 427 | $blog_id = get_current_blog_id(); |
| 428 | $has_ai_assistant_feature = \wpcom_site_has_feature( 'ai-assistant', $blog_id ); |
| 429 | |
| 430 | if ( ! class_exists( 'WPCOM\Jetpack_AI\Usage\Helper' ) ) { |
| 431 | if ( is_readable( WP_CONTENT_DIR . '/lib/jetpack-ai/usage/helper.php' ) ) { |
| 432 | require_once WP_CONTENT_DIR . '/lib/jetpack-ai/usage/helper.php'; |
| 433 | } else { |
| 434 | return new WP_Error( |
| 435 | 'jetpack_ai_usage_helper_not_found', |
| 436 | __( 'WPCOM\Jetpack_AI\Usage\Helper class not found.', 'jetpack' ) |
| 437 | ); |
| 438 | } |
| 439 | } |
| 440 | |
| 441 | if ( ! class_exists( 'WPCOM\Jetpack_AI\Feature_Control' ) ) { |
| 442 | if ( is_readable( WP_CONTENT_DIR . '/lib/jetpack-ai/feature-control.php' ) ) { |
| 443 | require_once WP_CONTENT_DIR . '/lib/jetpack-ai/feature-control.php'; |
| 444 | } else { |
| 445 | return new WP_Error( |
| 446 | 'jetpack_ai_feature_control_not_found', |
| 447 | __( 'WPCOM\Jetpack_AI\Feature_Control class not found.', 'jetpack' ) |
| 448 | ); |
| 449 | } |
| 450 | } |
| 451 | |
| 452 | // Determine the upgrade type |
| 453 | $upgrade_type = wpcom_is_vip( $blog_id ) ? 'vip' : 'default'; |
| 454 | |
| 455 | return array( |
| 456 | 'has-feature' => $has_ai_assistant_feature, |
| 457 | 'is-over-limit' => WPCOM\Jetpack_AI\Usage\Helper::is_over_limit( $blog_id ), |
| 458 | 'requests-count' => WPCOM\Jetpack_AI\Usage\Helper::get_all_time_requests_count( $blog_id ), |
| 459 | 'requests-limit' => WPCOM\Jetpack_AI\Usage\Helper::get_free_requests_limit( $blog_id ), |
| 460 | 'usage-period' => WPCOM\Jetpack_AI\Usage\Helper::get_period_data( $blog_id ), |
| 461 | 'site-require-upgrade' => WPCOM\Jetpack_AI\Usage\Helper::site_requires_upgrade( $blog_id ), |
| 462 | 'upgrade-type' => $upgrade_type, |
| 463 | 'upgrade-url' => WPCOM\Jetpack_AI\Usage\Helper::get_upgrade_url( $blog_id ), |
| 464 | 'current-tier' => WPCOM\Jetpack_AI\Usage\Helper::get_current_tier( $blog_id ), |
| 465 | 'next-tier' => WPCOM\Jetpack_AI\Usage\Helper::get_next_tier( $blog_id ), |
| 466 | 'tier-plans' => WPCOM\Jetpack_AI\Usage\Helper::get_tier_plans_list(), |
| 467 | 'tier-plans-enabled' => WPCOM\Jetpack_AI\Usage\Helper::ai_tier_plans_enabled(), |
| 468 | 'costs' => WPCOM\Jetpack_AI\Usage\Helper::get_costs(), |
| 469 | 'features-control' => WPCOM\Jetpack_AI\Feature_Control::get_features(), |
| 470 | ); |
| 471 | } |
| 472 | |
| 473 | // Outside of WPCOM, we need to fetch the data from the site. |
| 474 | $blog_id = Jetpack_Options::get_option( 'id' ); |
| 475 | |
| 476 | // Try to pick the AI Assistant feature from cache. |
| 477 | $transient_name = self::transient_name_for_ai_assistance_feature( $blog_id ); |
| 478 | $cache = get_transient( $transient_name ); |
| 479 | if ( $cache ) { |
| 480 | return $cache; |
| 481 | } |
| 482 | |
| 483 | if ( null !== static::$ai_assistant_failed_request ) { |
| 484 | return static::$ai_assistant_failed_request; |
| 485 | } |
| 486 | |
| 487 | $request_path = sprintf( '/sites/%d/jetpack-ai/ai-assistant-feature', $blog_id ); |
| 488 | |
| 489 | $wpcom_request = Client::wpcom_json_api_request_as_user( |
| 490 | $request_path, |
| 491 | 'v2', |
| 492 | array( |
| 493 | 'method' => 'GET', |
| 494 | 'headers' => array( |
| 495 | 'X-Forwarded-For' => ( new Visitor() )->get_ip( true ), |
| 496 | ), |
| 497 | 'timeout' => 30, |
| 498 | ), |
| 499 | null, |
| 500 | 'wpcom' |
| 501 | ); |
| 502 | |
| 503 | $response_code = wp_remote_retrieve_response_code( $wpcom_request ); |
| 504 | if ( 200 === $response_code ) { |
| 505 | $ai_assistant_feature_data = json_decode( wp_remote_retrieve_body( $wpcom_request ), true ); |
| 506 | |
| 507 | // Cache the AI Assistant feature, for Jetpack sites. |
| 508 | set_transient( $transient_name, $ai_assistant_feature_data, self::$ai_assistant_feature_cache_timeout ); |
| 509 | |
| 510 | return $ai_assistant_feature_data; |
| 511 | } else { |
| 512 | $error = new WP_Error( |
| 513 | 'failed_to_fetch_data', |
| 514 | esc_html__( 'Unable to fetch the requested data.', 'jetpack' ), |
| 515 | array( |
| 516 | 'status' => $response_code, |
| 517 | 'ts' => time(), |
| 518 | ) |
| 519 | ); |
| 520 | |
| 521 | // Cache the AI Assistant feature error, for Jetpack sites, avoid API hammering. |
| 522 | set_transient( $transient_name, $error, self::$ai_assistant_feature_error_cache_timeout ); |
| 523 | |
| 524 | static::$ai_assistant_failed_request = $error; |
| 525 | |
| 526 | return $error; |
| 527 | } |
| 528 | } |
| 529 | } |
| 530 |