assistants.php
3 years ago
chatbot.php
3 years ago
chatbot_legacy.php
3 years ago
discussions.php
3 years ago
security.php
3 years ago
chatbot.php
458 lines
| 1 | <?php |
| 2 | |
| 3 | // Params for the chatbot (front and server) |
| 4 | |
| 5 | define( 'MWAI_CHATBOT_FRONT_PARAMS', [ 'aiName', 'userName', 'guestName', 'textSend', 'textClear', |
| 6 | 'textInputPlaceholder', 'textInputMaxLength', 'textCompliance', 'startSentence', 'localMemory', |
| 7 | 'themeId', 'window', 'icon', 'iconText', 'iconAlt', 'iconPosition', 'fullscreen', 'copyButton' |
| 8 | ] ); |
| 9 | define( 'MWAI_CHATBOT_SERVER_PARAMS', [ 'id', 'env', 'mode', 'contentAware', 'embeddingsIndex', 'context', |
| 10 | 'casuallyFineTuned', 'promptEnding', 'completionEnding', 'model', 'temperature', 'maxTokens', |
| 11 | 'maxResults', 'apiKey', 'service' |
| 12 | ] ); |
| 13 | |
| 14 | // Params for the discussions (front and server) |
| 15 | |
| 16 | define( 'MWAI_DISCUSSIONS_FRONT_PARAMS', [ 'themeId' ] ); |
| 17 | define( 'MWAI_DISCUSSIONS_SERVER_PARAMS', [] ); |
| 18 | |
| 19 | class Meow_MWAI_Modules_Chatbot { |
| 20 | private $core = null; |
| 21 | private $namespace = 'mwai-ui/v1'; |
| 22 | private $siteWideChatId = null; |
| 23 | |
| 24 | public function __construct() { |
| 25 | global $mwai_core; |
| 26 | $this->core = $mwai_core; |
| 27 | add_shortcode( 'mwai_chatbot_v2', array( $this, 'chat_shortcode' ) ); |
| 28 | add_action( 'rest_api_init', array( $this, 'rest_api_init' ) ); |
| 29 | $this->siteWideChatId = $this->core->get_option( 'botId' ); |
| 30 | add_action( 'wp_enqueue_scripts', array( $this, 'register_scripts' ) ); |
| 31 | |
| 32 | if ( $this->core->get_option( 'shortcode_chat_discussions' ) ) { |
| 33 | add_shortcode( 'mwai_discussions', [ $this, 'shortcode_chat_discussions' ] ); |
| 34 | } |
| 35 | } |
| 36 | |
| 37 | public function register_scripts() { |
| 38 | wp_register_script( 'mwai_highlight', MWAI_URL . 'vendor/highlightjs/highlight.min.js', [], '11.7', false ); |
| 39 | $physical_file = trailingslashit( MWAI_PATH ) . 'app/chatbot.js'; |
| 40 | $cache_buster = file_exists( $physical_file ) ? filemtime( $physical_file ) : MWAI_VERSION; |
| 41 | wp_register_script( 'mwai_chatbot', trailingslashit( MWAI_URL ) . 'app/chatbot.js', |
| 42 | [ 'wp-element' ], $cache_buster, false ); |
| 43 | if ( !empty( $this->siteWideChatId ) && $this->siteWideChatId !== 'none' ) { |
| 44 | $this->enqueue_scripts(); |
| 45 | add_action( 'wp_footer', array( $this, 'inject_chat' ) ); |
| 46 | } |
| 47 | } |
| 48 | |
| 49 | public function enqueue_scripts() { |
| 50 | wp_enqueue_script( "mwai_chatbot" ); |
| 51 | if ( $this->core->get_option( 'shortcode_chat_syntax_highlighting' ) ) { |
| 52 | wp_enqueue_script( "mwai_highlight" ); |
| 53 | } |
| 54 | } |
| 55 | |
| 56 | public function rest_api_init() { |
| 57 | register_rest_route( $this->namespace, '/chats/submit', array( |
| 58 | 'methods' => 'POST', |
| 59 | 'callback' => array( $this, 'rest_chat' ), |
| 60 | 'permission_callback' => '__return_true' |
| 61 | ) ); |
| 62 | } |
| 63 | |
| 64 | public function basics_security_check( $id, $botId, $newMessage ) { |
| 65 | if ( empty( $newMessage ) ) { |
| 66 | error_log("AI Engine: The query was rejected - message was empty."); |
| 67 | return false; |
| 68 | } |
| 69 | if ( !$botId && !$id ) { |
| 70 | error_log("AI Engine: The query was rejected - no botId nor id was specified."); |
| 71 | return false; |
| 72 | } |
| 73 | $length = strlen( $newMessage ); |
| 74 | if ( $length < 1 || $length > ( 4096 - 512 ) ) { |
| 75 | error_log("AI Engine: The query was rejected - message was too short or too long."); |
| 76 | return false; |
| 77 | } |
| 78 | return true; |
| 79 | } |
| 80 | |
| 81 | public function rest_chat( $request ) { |
| 82 | try { |
| 83 | $params = $request->get_json_params(); |
| 84 | $id = $params['id'] ?? null; |
| 85 | $botId = $params['botId'] ?? null; |
| 86 | $stream = $params['stream'] ?? false; |
| 87 | $newMessage = trim( $params['newMessage'] ?? '' ); |
| 88 | $chatbot = null; |
| 89 | |
| 90 | if ( !$this->basics_security_check( $id, $botId, $newMessage )) { |
| 91 | return new WP_REST_Response( [ |
| 92 | 'success' => false, |
| 93 | 'message' => 'Sorry, your query has been rejected.' ], 403 |
| 94 | ); |
| 95 | } |
| 96 | |
| 97 | // Custom Chatbot |
| 98 | if ( $id ) { |
| 99 | $chatbot = get_transient( 'mwai_custom_chatbot_' . $id ); |
| 100 | } |
| 101 | // Registered Chatbot |
| 102 | if ( !$chatbot && $botId ) { |
| 103 | $chatbot = $this->core->getChatbot( $botId ); |
| 104 | } |
| 105 | |
| 106 | if ( !$chatbot ) { |
| 107 | error_log("AI Engine: No chatbot was found for this query."); |
| 108 | return new WP_REST_Response( [ |
| 109 | 'success' => false, |
| 110 | 'message' => 'Sorry, your query has been rejected.' ], 403 |
| 111 | ); |
| 112 | } |
| 113 | |
| 114 | // Create QueryText |
| 115 | $context = null; |
| 116 | $mode = $chatbot['mode'] ?? 'chat'; |
| 117 | |
| 118 | if ( $mode === 'images' ) { |
| 119 | $query = new Meow_MWAI_Query_Image( $newMessage ); |
| 120 | |
| 121 | // Handle Params |
| 122 | $newParams = []; |
| 123 | foreach ( $chatbot as $key => $value ) { |
| 124 | $newParams[$key] = $value; |
| 125 | } |
| 126 | foreach ( $params as $key => $value ) { |
| 127 | $newParams[$key] = $value; |
| 128 | } |
| 129 | $params = apply_filters( 'mwai_chatbot_params', $newParams ); |
| 130 | $params['env'] = empty( $params['env'] ) ? 'chatbot' : $params['env']; |
| 131 | $query->injectParams( $params ); |
| 132 | } |
| 133 | else { |
| 134 | $query = new Meow_MWAI_Query_Text( $newMessage, 1024 ); |
| 135 | //$query->setIsChat( true ); |
| 136 | $streamCallback = null; |
| 137 | |
| 138 | // Handle Params |
| 139 | $newParams = []; |
| 140 | foreach ( $chatbot as $key => $value ) { |
| 141 | $newParams[$key] = $value; |
| 142 | } |
| 143 | foreach ( $params as $key => $value ) { |
| 144 | $newParams[$key] = $value; |
| 145 | } |
| 146 | $params = apply_filters( 'mwai_chatbot_params', $newParams ); |
| 147 | $params['env'] = empty( $params['env'] ) ? 'chatbot' : $params['env']; |
| 148 | $query->injectParams( $params ); |
| 149 | |
| 150 | // Takeover |
| 151 | $takeoverAnswer = apply_filters( 'mwai_chatbot_takeover', null, $query, $params ); |
| 152 | if ( !empty( $takeoverAnswer ) ) { |
| 153 | return new WP_REST_Response( [ |
| 154 | 'success' => true, |
| 155 | 'reply' => $takeoverAnswer, |
| 156 | 'usage' => null |
| 157 | ], 200 ); |
| 158 | } |
| 159 | |
| 160 | // Moderation |
| 161 | if ( $this->core->get_option( 'shortcode_chat_moderation' ) ) { |
| 162 | global $mwai; |
| 163 | $isFlagged = $mwai->moderationCheck( $query->prompt ); |
| 164 | if ( $isFlagged ) { |
| 165 | return new WP_REST_Response( [ |
| 166 | 'success' => false, |
| 167 | 'message' => 'Sorry, your message has been rejected by moderation.' ], 403 |
| 168 | ); |
| 169 | } |
| 170 | } |
| 171 | |
| 172 | // Awareness & Embeddings |
| 173 | // TODO: This is same in Chatbot Legacy and Forms, maybe we should move it to the core? |
| 174 | $embeddingsIndex = $params['embeddingsIndex'] ?? null; |
| 175 | if ( $query->mode === 'chat' ) { |
| 176 | $context = apply_filters( 'mwai_context_search', $context, $query, [ 'embeddingsIndex' => $embeddingsIndex ] ); |
| 177 | if ( !empty( $context ) ) { |
| 178 | if ( isset( $context['content'] ) ) { |
| 179 | $content = $this->core->cleanSentences( $context['content'] ); |
| 180 | $query->injectContext( $content ); |
| 181 | } |
| 182 | else { |
| 183 | error_log("AI Engine: A context without content was returned."); |
| 184 | } |
| 185 | } |
| 186 | } |
| 187 | } |
| 188 | |
| 189 | // Process Query |
| 190 | if ( $stream ) { |
| 191 | $streamCallback = function( $reply ) { |
| 192 | //$raw = _wp_specialchars( $reply, ENT_NOQUOTES, 'UTF-8', true ); |
| 193 | $raw = $reply; |
| 194 | $this->stream_push( [ 'type' => 'live', 'data' => $raw ] ); |
| 195 | if ( ob_get_level() > 0 ) { |
| 196 | ob_flush(); |
| 197 | } |
| 198 | flush(); |
| 199 | }; |
| 200 | header( 'Cache-Control: no-cache' ); |
| 201 | header( 'Content-Type: text/event-stream' ); |
| 202 | header( 'X-Accel-Buffering: no' ); // This is useful to disable buffering in nginx through headers. |
| 203 | ob_implicit_flush( true ); |
| 204 | ob_end_flush(); |
| 205 | } |
| 206 | |
| 207 | $reply = $this->core->ai->run( $query, $streamCallback ); |
| 208 | $rawText = $reply->result; |
| 209 | $extra = []; |
| 210 | if ( $context ) { |
| 211 | $extra = [ 'embeddings' => $context['embeddings'] ]; |
| 212 | } |
| 213 | |
| 214 | $rawText = apply_filters( 'mwai_chatbot_reply', $rawText, $query, $params, $extra ); |
| 215 | // TODO: There is no need for the shortcode_chat_formatting sice Markdown is handled on the client side. |
| 216 | // if ( $this->core->get_option( 'shortcode_chat_formatting' ) ) { |
| 217 | // $html = $this->core->markdown_to_html( $rawText ); |
| 218 | // } |
| 219 | |
| 220 | $restRes = [ |
| 221 | 'success' => true, |
| 222 | 'reply' => $rawText, |
| 223 | 'images' => $reply->getType() === 'images' ? $reply->results : null, |
| 224 | 'usage' => $reply->usage |
| 225 | ]; |
| 226 | |
| 227 | // Process Reply |
| 228 | if ( $stream ) { |
| 229 | $this->stream_push( [ 'type' => 'end', 'data' => json_encode( $restRes ) ] ); |
| 230 | die(); |
| 231 | } |
| 232 | else { |
| 233 | return new WP_REST_Response( $restRes, 200 ); |
| 234 | } |
| 235 | |
| 236 | } |
| 237 | catch ( Exception $e ) { |
| 238 | $message = apply_filters( 'mwai_ai_exception', $e->getMessage() ); |
| 239 | if ( $stream ) { |
| 240 | $this->stream_push( [ 'type' => 'error', 'data' => $message ] ); |
| 241 | } |
| 242 | else { |
| 243 | return new WP_REST_Response([ 'success' => false, 'message' => $message ], 500 ); |
| 244 | } |
| 245 | } |
| 246 | } |
| 247 | |
| 248 | public function stream_push( $data ) { |
| 249 | $out = "data: " . json_encode( $data ); |
| 250 | echo $out; |
| 251 | echo "\n\n"; |
| 252 | ob_end_flush(); |
| 253 | flush(); |
| 254 | } |
| 255 | |
| 256 | public function inject_chat() { |
| 257 | $params = $this->core->getChatbot( $this->siteWideChatId ); |
| 258 | $cleanParams = []; |
| 259 | if ( !empty( $params ) ) { |
| 260 | $cleanParams['window'] = true; |
| 261 | $cleanParams['id'] = $this->siteWideChatId; |
| 262 | echo $this->chat_shortcode( $cleanParams ); |
| 263 | } |
| 264 | return null; |
| 265 | } |
| 266 | |
| 267 | public function build_front_params( $id, $botId ) { |
| 268 | $frontSystem = [ |
| 269 | 'id' => $id, |
| 270 | 'botId' => $botId, |
| 271 | 'userData' => $this->core->getUserData(), |
| 272 | 'sessionId' => $this->core->get_session_id(), |
| 273 | 'restNonce' => $this->core->get_nonce(), |
| 274 | 'contextId' => get_the_ID(), |
| 275 | 'pluginUrl' => MWAI_URL, |
| 276 | 'restUrl' => untrailingslashit( rest_url() ), |
| 277 | 'debugMode' => $this->core->get_option( 'debug_mode' ), |
| 278 | 'typewriter' => $this->core->get_option( 'shortcode_chat_typewriter' ), |
| 279 | 'speech_recognition' => $this->core->get_option( 'speech_recognition' ), |
| 280 | 'speech_synthesis' => $this->core->get_option( 'speech_synthesis' ), |
| 281 | 'stream' => $this->core->get_option( 'shortcode_chat_stream' ), |
| 282 | ]; |
| 283 | return $frontSystem; |
| 284 | } |
| 285 | |
| 286 | public function chat_shortcode( $atts ) { |
| 287 | $atts = empty($atts) ? [] : $atts; |
| 288 | |
| 289 | // Properly handle the id, botId, and chatbot |
| 290 | // We have the same in discussions.php |
| 291 | $chatbot = null; |
| 292 | $botId = $atts['chat_id'] ?? null; |
| 293 | $id = $atts['id'] ?? null; |
| 294 | unset( $atts['chat_id'], $atts['id'] ); |
| 295 | if ( $botId ) { |
| 296 | $chatbot = $this->core->getChatbot( $botId ); |
| 297 | if ( !$chatbot ) { |
| 298 | return "AI Engine: Chatbot not found."; |
| 299 | } |
| 300 | } |
| 301 | if ( $id && !$chatbot ) { |
| 302 | $chatbot = $this->core->getChatbot( $id ); |
| 303 | $botId = $chatbot ? $id : 'default'; |
| 304 | } |
| 305 | $chatbot = $chatbot ?: $this->core->getChatbot( 'default' ); |
| 306 | $botId = $botId ?: 'default'; |
| 307 | $isCustom = $botId == 'default' && isset( $atts['id'] ); |
| 308 | |
| 309 | // Rename the keys of the atts into camelCase to match the internal params system. |
| 310 | $atts = array_map( function( $key, $value ) { |
| 311 | $key = str_replace( '_', ' ', $key ); |
| 312 | $key = ucwords( $key ); |
| 313 | $key = str_replace( ' ', '', $key ); |
| 314 | $key = lcfirst( $key ); |
| 315 | return [ $key => $value ]; |
| 316 | }, array_keys( $atts ), $atts ); |
| 317 | $atts = array_merge( ...$atts ); |
| 318 | |
| 319 | $frontParams = []; |
| 320 | foreach ( MWAI_CHATBOT_FRONT_PARAMS as $param ) { |
| 321 | if ( isset( $atts[$param] ) ) { |
| 322 | if ( $param === 'localMemory' ) { |
| 323 | $frontParams[$param] = $atts[$param] === 'true'; |
| 324 | } |
| 325 | else { |
| 326 | $frontParams[$param] = $atts[$param]; |
| 327 | } |
| 328 | } |
| 329 | else if ( isset( $chatbot[$param] ) ) { |
| 330 | $frontParams[$param] = $chatbot[$param]; |
| 331 | } |
| 332 | } |
| 333 | |
| 334 | // Server Params |
| 335 | $serverParams = []; |
| 336 | foreach ( MWAI_CHATBOT_SERVER_PARAMS as $param ) { |
| 337 | if ( isset( $atts[$param] ) ) { |
| 338 | $serverParams[$param] = $atts[$param]; |
| 339 | } |
| 340 | } |
| 341 | |
| 342 | // Front Params |
| 343 | $frontSystem = $this->build_front_params( $id, $botId ); |
| 344 | |
| 345 | // Clean Params |
| 346 | $frontParams = $this->cleanParams( $frontParams ); |
| 347 | $frontSystem = $this->cleanParams( $frontSystem ); |
| 348 | $serverParams = $this->cleanParams( $serverParams ); |
| 349 | |
| 350 | // Server-side: Keep the System Params |
| 351 | if ( count( $serverParams ) > 0 ) { |
| 352 | if ( !$isCustom ) { |
| 353 | $id = md5( json_encode( $serverParams ) ); |
| 354 | $botId = null; |
| 355 | $frontSystem['id'] = $id; |
| 356 | $frontSystem['botId'] = $botId; |
| 357 | } |
| 358 | set_transient( 'mwai_custom_chatbot_' . $id, $serverParams, 60 * 60 * 24 ); |
| 359 | } |
| 360 | |
| 361 | // Client-side: Prepare JSON for Front Params and System Params |
| 362 | $theme = isset( $frontParams['themeId'] ) ? $this->core->getTheme( $frontParams['themeId'] ) : null; |
| 363 | $jsonFrontParams = htmlspecialchars( json_encode( $frontParams ), ENT_QUOTES, 'UTF-8' ); |
| 364 | $jsonFrontSystem = htmlspecialchars( json_encode( $frontSystem ), ENT_QUOTES, 'UTF-8' ); |
| 365 | $jsonFrontTheme = htmlspecialchars( json_encode( $theme ), ENT_QUOTES, 'UTF-8' ); |
| 366 | //$jsonAttributes = htmlspecialchars(json_encode($atts), ENT_QUOTES, 'UTF-8'); |
| 367 | |
| 368 | $this->enqueue_scripts(); |
| 369 | return "<div class='mwai-chatbot-container' data-params='{$jsonFrontParams}' data-system='{$jsonFrontSystem}' data-theme='{$jsonFrontTheme}'></div>"; |
| 370 | } |
| 371 | |
| 372 | function shortcode_chat_discussions( $atts ) { |
| 373 | $atts = empty($atts) ? [] : $atts; |
| 374 | |
| 375 | // Properly handle the id, botId, and chatbot |
| 376 | // We have the same in chatbot.php |
| 377 | $chatbot = null; |
| 378 | $botId = $atts['chat_id'] ?? null; |
| 379 | $id = $atts['id'] ?? null; |
| 380 | unset( $atts['chat_id'], $atts['id'] ); |
| 381 | if ( $botId ) { |
| 382 | $chatbot = $this->core->getChatbot( $botId ); |
| 383 | if ( !$chatbot ) { |
| 384 | return "AI Engine: Chatbot not found."; |
| 385 | } |
| 386 | } |
| 387 | if ( $id && !$chatbot ) { |
| 388 | $chatbot = $this->core->getChatbot( $id ); |
| 389 | $botId = $chatbot ? $id : 'default'; |
| 390 | } |
| 391 | $chatbot = $chatbot ?: $this->core->getChatbot( 'default' ); |
| 392 | $botId = $botId ?: 'default'; |
| 393 | $isCustom = $botId == 'default' && isset( $atts['id'] ); |
| 394 | |
| 395 | // Rename the keys of the atts into camelCase to match the internal params system. |
| 396 | $atts = array_map( function( $key, $value ) { |
| 397 | $key = str_replace( '_', ' ', $key ); |
| 398 | $key = ucwords( $key ); |
| 399 | $key = str_replace( ' ', '', $key ); |
| 400 | $key = lcfirst( $key ); |
| 401 | return [ $key => $value ]; |
| 402 | }, array_keys( $atts ), $atts ); |
| 403 | $atts = array_merge( ...$atts ); |
| 404 | |
| 405 | // Front Params |
| 406 | $frontParams = []; |
| 407 | foreach ( MWAI_DISCUSSIONS_FRONT_PARAMS as $param ) { |
| 408 | if ( isset( $atts[$param] ) ) { |
| 409 | $frontParams[$param] = $atts[$param]; |
| 410 | } |
| 411 | else if ( isset( $chatbot[$param] ) ) { |
| 412 | $frontParams[$param] = $chatbot[$param]; |
| 413 | } |
| 414 | } |
| 415 | |
| 416 | // Server Params |
| 417 | $serverParams = []; |
| 418 | foreach ( MWAI_DISCUSSIONS_SERVER_PARAMS as $param ) { |
| 419 | if ( isset( $atts[$param] ) ) { |
| 420 | $serverParams[$param] = $atts[$param]; |
| 421 | } |
| 422 | } |
| 423 | |
| 424 | |
| 425 | // Front System |
| 426 | $frontSystem = $this->build_front_params( $id, $botId ); |
| 427 | |
| 428 | // Clean Params |
| 429 | $frontParams = $this->cleanParams( $frontParams ); |
| 430 | $frontSystem = $this->cleanParams( $frontSystem ); |
| 431 | $serverParams = $this->cleanParams( $serverParams ); |
| 432 | |
| 433 | $theme = isset( $frontParams['themeId'] ) ? $this->core->getTheme( $frontParams['themeId'] ) : null; |
| 434 | $jsonFrontParams = htmlspecialchars( json_encode( $frontParams ), ENT_QUOTES, 'UTF-8' ); |
| 435 | $jsonFrontSystem = htmlspecialchars( json_encode( $frontSystem ), ENT_QUOTES, 'UTF-8' ); |
| 436 | $jsonFrontTheme = htmlspecialchars( json_encode( $theme ), ENT_QUOTES, 'UTF-8' ); |
| 437 | |
| 438 | return "<div class='mwai-discussions-container' data-params='{$jsonFrontParams}' data-system='{$jsonFrontSystem}' data-theme='{$jsonFrontTheme}'></div>"; |
| 439 | } |
| 440 | |
| 441 | function cleanParams( &$params ) { |
| 442 | foreach ( $params as $param => $value ) { |
| 443 | if ( empty( $value ) || is_array( $value ) ) { |
| 444 | continue; |
| 445 | } |
| 446 | $lowerCaseValue = strtolower( $value ); |
| 447 | if ( $lowerCaseValue === 'true' || $lowerCaseValue === 'false' || is_bool( $value ) ) { |
| 448 | $params[$param] = filter_var( $value, FILTER_VALIDATE_BOOLEAN ); |
| 449 | } |
| 450 | else if ( is_numeric( $value ) ) { |
| 451 | $params[$param] = filter_var( $value, FILTER_VALIDATE_FLOAT ); |
| 452 | } |
| 453 | } |
| 454 | return $params; |
| 455 | } |
| 456 | |
| 457 | } |
| 458 |