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