| @@ -5,153 +5,8 @@ | ||
| 5 | 5 | |
| 6 | 6 | class MxChat_Utils { |
| 7 | 7 | |
| 8 | 8 | /** |
| 9 | - * Validate a client-supplied session id (plan-mxchat-20260731-d42bec). | |
| 10 | - * | |
| 11 | - * sanitize_text_field() — which every session_id read site used before this — | |
| 12 | - * preserves '/' and '..'. Harmless where the value is only an option or | |
| 13 | - * transient key suffix, but mxchat_send_delayed_transcript() interpolates it | |
| 14 | - * into a filesystem path, so '../../../../path/x' wrote, emailed and deleted a | |
| 15 | - * file outside the uploads dir. | |
| 16 | - * | |
| 17 | - * REJECTS rather than rewrites: a silently-stripped id would orphan the | |
| 18 | - * conversation it belongs to, which is harder to diagnose than a clean refusal. | |
| 19 | - * Returns '' for anything malformed, so call sites fall into the empty-session | |
| 20 | - * error paths they already have. | |
| 21 | - * | |
| 22 | - * The generator only ever emits 'mxchat_chat_' + 32 hex chars | |
| 23 | - * (class-mxchat-integrator.php, js/chat-script.js), so this is not restrictive | |
| 24 | - * in practice. Length ceiling is deliberate — session ids are also used as | |
| 25 | - * option-name suffixes, and WP option names cap at 191 chars. | |
| 26 | - * | |
| 27 | - * @param mixed $raw Raw request value. | |
| 28 | - * @return string The id if well-formed, '' otherwise. | |
| 29 | - */ | |
| 30 | -public static function sanitize_session_id($raw) { | |
| 31 | - if (!is_scalar($raw)) { | |
| 32 | - return ''; | |
| 33 | - } | |
| 34 | - $val = trim((string) $raw); | |
| 35 | - if ($val === '') { | |
| 36 | - return ''; | |
| 37 | - } | |
| 38 | - return preg_match('/\A[A-Za-z0-9_-]{1,128}\z/', $val) ? $val : ''; | |
| 39 | -} | |
| 40 | - | |
| 41 | -/** | |
| 42 | - * Centralized embedding model registry. Single source of truth for dimensions | |
| 43 | - * and provider, so model-switch protection logic doesn't drift across files. | |
| 44 | - */ | |
| 45 | -public static function embedding_model_registry() { | |
| 46 | - return array( | |
| 47 | - 'text-embedding-ada-002' => array('dims' => 1536, 'provider' => 'openai', 'label' => 'Ada 2'), | |
| 48 | - 'text-embedding-3-small' => array('dims' => 1536, 'provider' => 'openai', 'label' => 'TE3 Small'), | |
| 49 | - 'text-embedding-3-large' => array('dims' => 3072, 'provider' => 'openai', 'label' => 'TE3 Large'), | |
| 50 | - 'voyage-3-large' => array('dims' => 2048, 'provider' => 'voyage', 'label' => 'Voyage-3 Large'), | |
| 51 | - 'gemini-embedding-001' => array('dims' => 1536, 'provider' => 'gemini', 'label' => 'Gemini Embedding'), | |
| 52 | - ); | |
| 53 | -} | |
| 54 | - | |
| 55 | -public static function embedding_model_dimensions($model) { | |
| 56 | - $registry = self::embedding_model_registry(); | |
| 57 | - return isset($registry[$model]) ? (int) $registry[$model]['dims'] : 0; | |
| 58 | -} | |
| 59 | - | |
| 60 | -public static function embedding_model_label($model) { | |
| 61 | - if (is_string($model) && strpos($model, 'custom:') === 0) { | |
| 62 | - /* translators: %s: the embedding model name configured on the custom provider */ | |
| 63 | - return sprintf(__('%s (custom provider)', 'mxchat'), substr($model, 7)); | |
| 64 | - } | |
| 65 | - $registry = self::embedding_model_registry(); | |
| 66 | - return isset($registry[$model]) ? $registry[$model]['label'] : $model; | |
| 67 | -} | |
| 68 | - | |
| 69 | -/** | |
| 70 | - * Returns the model that was last used to actually write embeddings into the | |
| 71 | - * KB. Differs from the user-selected setting once a switch has happened but | |
| 72 | - * no re-embed has occurred yet — that's the mismatch state we warn about. | |
| 73 | - */ | |
| 74 | -public static function get_active_embedding_model() { | |
| 75 | - return get_option('mxchat_active_embedding_model', ''); | |
| 76 | -} | |
| 77 | - | |
| 78 | -/** | |
| 79 | - * Stamp the model that produced the most recent successful embedding. Called | |
| 80 | - * from generate_embedding() right after the API responds with a valid vector. | |
| 81 | - */ | |
| 82 | -public static function stamp_active_embedding_model($model) { | |
| 83 | - if (!empty($model) && $model !== self::get_active_embedding_model()) { | |
| 84 | - update_option('mxchat_active_embedding_model', $model, false); | |
| 85 | - } | |
| 86 | -} | |
| 87 | - | |
| 88 | -/** | |
| 89 | - * The model name the custom-provider embedding path will send, mirroring the | |
| 90 | - * fallback chain the request itself uses: dedicated custom embedding model, | |
| 91 | - * else the custom chat model, else 'default'. Single source shared by | |
| 92 | - * generate_embedding_custom() and the mismatch-warning "selected" side so the | |
| 93 | - * two can never drift (plan ae02cb). | |
| 94 | - */ | |
| 95 | -public static function resolve_custom_embedding_model($options) { | |
| 96 | - if (isset($options['custom_provider_embedding_model']) && trim((string) $options['custom_provider_embedding_model']) !== '') { | |
| 97 | - return trim((string) $options['custom_provider_embedding_model']); | |
| 98 | - } | |
| 99 | - if (isset($options['custom_provider_model']) && trim((string) $options['custom_provider_model']) !== '') { | |
| 100 | - return trim((string) $options['custom_provider_model']); | |
| 101 | - } | |
| 102 | - return 'default'; | |
| 103 | -} | |
| 104 | - | |
| 105 | -/** | |
| 106 | - * The EFFECTIVE selected embedding model — what the next embed will actually | |
| 107 | - * use. With custom-provider embeddings on this is the custom identity in the | |
| 108 | - * same 'custom:<model>' form stamp_active_embedding_model() records, not the | |
| 109 | - * inert standard dropdown value. Mismatch-warning comparisons must read this, | |
| 110 | - * never $options['embedding_model'] directly — the dropdown cannot be | |
| 111 | - * deselected, so reading it raw flags every correctly-configured custom setup. | |
| 112 | - */ | |
| 113 | -public static function get_selected_embedding_model($options = null) { | |
| 114 | - if (!is_array($options)) { | |
| 115 | - $options = get_option('mxchat_options', array()); | |
| 116 | - } | |
| 117 | - if (isset($options['custom_provider_for_embeddings']) && $options['custom_provider_for_embeddings'] === 'on') { | |
| 118 | - return 'custom:' . self::resolve_custom_embedding_model($options); | |
| 119 | - } | |
| 120 | - return $options['embedding_model'] ?? ''; | |
| 121 | -} | |
| 122 | - | |
| 123 | -/** | |
| 124 | - * Extract the 11-character YouTube video ID from a URL, or '' if the URL is | |
| 125 | - * not a single-video YouTube link. Single source of truth for both the KB | |
| 126 | - * ingestion side and the chat render side — do not duplicate this parsing. | |
| 127 | - * Channel, playlist, and search URLs deliberately return '' (only a URL that | |
| 128 | - * identifies one video can be embedded). | |
| 129 | - */ | |
| 130 | -public static function parse_youtube_id($url) { | |
| 131 | - if (!is_string($url) || $url === '' || !preg_match('#^https?://#i', $url)) { | |
| 132 | - return ''; | |
| 133 | - } | |
| 134 | - $host = strtolower((string) wp_parse_url($url, PHP_URL_HOST)); | |
| 135 | - $host = preg_replace('/^(www|m)\./', '', $host); | |
| 136 | - $path = (string) wp_parse_url($url, PHP_URL_PATH); | |
| 137 | - $id = ''; | |
| 138 | - if ($host === 'youtu.be') { | |
| 139 | - $segments = explode('/', ltrim($path, '/')); | |
| 140 | - $id = $segments[0] ?? ''; | |
| 141 | - } elseif (in_array($host, array('youtube.com', 'youtube-nocookie.com'), true)) { | |
| 142 | - if (preg_match('#^/(?:shorts|embed|live|v)/([A-Za-z0-9_-]+)#', $path, $m)) { | |
| 143 | - $id = $m[1]; | |
| 144 | - } elseif ($path === '/watch') { | |
| 145 | - parse_str((string) wp_parse_url($url, PHP_URL_QUERY), $query_vars); | |
| 146 | - $id = isset($query_vars['v']) ? (string) $query_vars['v'] : ''; | |
| 147 | - } | |
| 148 | - } | |
| 149 | - $id = preg_replace('/[^A-Za-z0-9_-]/', '', (string) $id); | |
| 150 | - return (strlen($id) === 11) ? $id : ''; | |
| 151 | -} | |
| 152 | - | |
| 153 | -/** | |
| 154 | 9 | * UPDATED: Submit or update content (and its embedding) in the database. |
| 155 | 10 | * Stores in Pinecone if enabled, otherwise stores in WordPress DB. |
| 156 | 11 | * |
| 157 | 12 | * @param string $content The content to be embedded. |
| @@ -193,13 +48,10 @@ | ||
| 193 | 48 | // UPDATED: Generate the embedding using bot-specific configuration |
| 194 | 49 | $embedding_vector = self::generate_embedding($content, $api_key, $bot_id); |
| 195 | 50 | |
| 196 | 51 | if (!is_array($embedding_vector)) { |
| 197 | - // Surface the provider's real reason instead of a fixed string (4a7c0a). | |
| 198 | - $reason = is_wp_error($embedding_vector) | |
| 199 | - ? $embedding_vector->get_error_message() | |
| 200 | - : 'Failed to generate embedding for content'; | |
| 201 | - return new WP_Error('embedding_failed', $reason); | |
| 52 | + //error_log('[MXCHAT-DB] Error: Embedding generation failed'); | |
| 53 | + return new WP_Error('embedding_failed', 'Failed to generate embedding for content'); | |
| 202 | 54 | } |
| 203 | 55 | |
| 204 | 56 | //error_log('[MXCHAT-DB] Embedding generated successfully'); |
| 205 | 57 | |
| @@ -519,9 +371,9 @@ | ||
| 519 | 371 | 'source_url' => $url, // Can be empty for manual content |
| 520 | 372 | 'type' => $content_type, // Now supports: post, page, pdf, url, manual, product, etc. |
| 521 | 373 | 'last_updated' => time(), |
| 522 | 374 | 'created_at' => time(), // Add creation timestamp |
| 523 | - 'bot_id' => $bot_id, // Add bot identification | |
| 375 | + 'bot_id' => $bot_id // Add bot identification | |
| 524 | 376 | ); |
| 525 | 377 | |
| 526 | 378 | $vector_data = array( |
| 527 | 379 | 'id' => $vector_id, |
| @@ -578,87 +430,8 @@ | ||
| 578 | 430 | return true; |
| 579 | 431 | } |
| 580 | 432 | |
| 581 | 433 | /** |
| 582 | - * Caller-side pre-flight for KB ingestion: can an embedding request be made | |
| 583 | - * with these options, and which API key should travel downstream? | |
| 584 | - * | |
| 585 | - * Custom-provider-aware — generate_embedding() below routes to the custom | |
| 586 | - * endpoint FIRST and ignores the passed cloud key entirely when | |
| 587 | - * custom_provider_for_embeddings is on, so on that branch the only real | |
| 588 | - * requirement is a Base URL. Ingestion callers that gated on a cloud API key | |
| 589 | - * were killing keyless custom-embeddings sites (local Ollama / LM Studio | |
| 590 | - * class) before the embed layer could route (plan cbd5fd). | |
| 591 | - * | |
| 592 | - * NOTE: reads $options['embedding_model'] raw on purpose — this mirrors | |
| 593 | - * generate_embedding()'s own routing read, NOT the mismatch-banner's | |
| 594 | - * "selected" chain (get_selected_embedding_model). The helper must predict | |
| 595 | - * what the very next embed call will do, byte-for-byte. | |
| 596 | - * | |
| 597 | - * Decision only — callers keep their own error-surfacing shape (admin-notice | |
| 598 | - * transient + redirect, wp_send_json_error, WP_Error, silent return). | |
| 599 | - * | |
| 600 | - * @param array|null $options Resolved options (bot-specific where the caller | |
| 601 | - * has them); null loads the default bot's options. | |
| 602 | - * @return array { | |
| 603 | - * @type bool $ok Whether ingestion can proceed. | |
| 604 | - * @type string $api_key Key to pass downstream ('' on the custom branch — | |
| 605 | - * generate_embedding() ignores it there). | |
| 606 | - * @type string $reason Human-readable blocker; '' when $ok. | |
| 607 | - * @type string $provider Short provider label ('OpenAI', 'Voyage AI', | |
| 608 | - * 'Google Gemini', 'Custom Provider'). | |
| 609 | - * } | |
| 610 | - */ | |
| 611 | -public static function embedding_preflight($options = null) { | |
| 612 | - if (!is_array($options)) { | |
| 613 | - $options = get_option('mxchat_options'); | |
| 614 | - $options = is_array($options) ? $options : array(); | |
| 615 | - } | |
| 616 | - | |
| 617 | - // Custom branch mirrors generate_embedding()'s routing order (custom first). | |
| 618 | - if (isset($options['custom_provider_for_embeddings']) && $options['custom_provider_for_embeddings'] === 'on') { | |
| 619 | - $base_url = isset($options['custom_provider_base_url']) ? rtrim(trim((string) $options['custom_provider_base_url']), '/') : ''; | |
| 620 | - if ($base_url === '') { | |
| 621 | - return array( | |
| 622 | - 'ok' => false, | |
| 623 | - 'api_key' => '', | |
| 624 | - // Same string generate_embedding_custom() returns for this state. | |
| 625 | - 'reason' => __('Custom provider Base URL is not configured.', 'mxchat'), | |
| 626 | - 'provider' => 'Custom Provider', | |
| 627 | - ); | |
| 628 | - } | |
| 629 | - return array('ok' => true, 'api_key' => '', 'reason' => '', 'provider' => 'Custom Provider'); | |
| 630 | - } | |
| 631 | - | |
| 632 | - $selected_model = $options['embedding_model'] ?? 'text-embedding-ada-002'; | |
| 633 | - if (strpos($selected_model, 'voyage') === 0) { | |
| 634 | - $api_key = $options['voyage_api_key'] ?? ''; | |
| 635 | - $provider = 'Voyage AI'; | |
| 636 | - } elseif (strpos($selected_model, 'gemini-embedding') === 0) { | |
| 637 | - $api_key = $options['gemini_api_key'] ?? ''; | |
| 638 | - $provider = 'Google Gemini'; | |
| 639 | - } else { | |
| 640 | - $api_key = $options['api_key'] ?? ''; | |
| 641 | - $provider = 'OpenAI'; | |
| 642 | - } | |
| 643 | - | |
| 644 | - if (empty($api_key)) { | |
| 645 | - return array( | |
| 646 | - 'ok' => false, | |
| 647 | - 'api_key' => '', | |
| 648 | - 'reason' => sprintf( | |
| 649 | - /* translators: %s: embedding provider name */ | |
| 650 | - __('%s API key is not configured. Please add your API key in the settings before submitting content.', 'mxchat'), | |
| 651 | - $provider | |
| 652 | - ), | |
| 653 | - 'provider' => $provider, | |
| 654 | - ); | |
| 655 | - } | |
| 656 | - | |
| 657 | - return array('ok' => true, 'api_key' => $api_key, 'reason' => '', 'provider' => $provider); | |
| 658 | -} | |
| 659 | - | |
| 660 | -/** | |
| 661 | 434 | * UPDATED: Generate an embedding for the given text using bot-specific configuration. |
| 662 | 435 | * |
| 663 | 436 | * @param string $text The text to be embedded. |
| 664 | 437 | * @param string $api_key The API key used for generating embeddings. |
| @@ -672,22 +445,11 @@ | ||
| 672 | 445 | } else { |
| 673 | 446 | $bot_options = apply_filters('mxchat_get_bot_options', array(), $bot_id); |
| 674 | 447 | $options = !empty($bot_options) ? $bot_options : get_option('mxchat_options'); |
| 675 | 448 | } |
| 676 | - | |
| 677 | - // Opt-in: when the custom provider is selected for embeddings, route the KB | |
| 678 | - // INDEX side through the same custom endpoint the query side uses, so stored | |
| 679 | - // vectors and query vectors come from the same model. Default-off behavior | |
| 680 | - // below is untouched. | |
| 681 | - if (isset($options['custom_provider_for_embeddings']) && $options['custom_provider_for_embeddings'] === 'on') { | |
| 682 | - $custom = self::generate_embedding_custom($text, $options); | |
| 683 | - // The custom path already returns a human-readable error string — | |
| 684 | - // carry it instead of collapsing to null (plan 4a7c0a). | |
| 685 | - return is_array($custom) ? $custom : new WP_Error('embedding_failed', (string) $custom); | |
| 686 | - } | |
| 687 | - | |
| 449 | + | |
| 688 | 450 | $selected_model = $options['embedding_model'] ?? 'text-embedding-ada-002'; |
| 689 | - | |
| 451 | + | |
| 690 | 452 | // Determine endpoint and API key based on model |
| 691 | 453 | if (strpos($selected_model, 'voyage') === 0) { |
| 692 | 454 | $endpoint = 'https://api.voyageai.com/v1/embeddings'; |
| 693 | 455 | $api_key = $options['voyage_api_key'] ?? ''; |
| @@ -749,155 +511,35 @@ | ||
| 749 | 511 | |
| 750 | 512 | $response = wp_remote_post($endpoint, $args); |
| 751 | 513 | |
| 752 | 514 | if (is_wp_error($response)) { |
| 753 | - $message = 'Embedding request failed (connection): ' . $response->get_error_message(); | |
| 754 | - if (class_exists('MxChat_Admin')) { | |
| 755 | - MxChat_Admin::mxchat_log_debug('embedding_error', $message, array('model' => $selected_model, 'bot_id' => $bot_id)); | |
| 756 | - } | |
| 757 | - return new WP_Error('embedding_failed', $message); | |
| 515 | + //error_log('Error generating embedding for bot ' . $bot_id . ': ' . $response->get_error_message()); | |
| 516 | + return null; | |
| 758 | 517 | } |
| 759 | - | |
| 518 | + | |
| 760 | 519 | $response_body = json_decode(wp_remote_retrieve_body($response), true); |
| 761 | - | |
| 520 | + | |
| 762 | 521 | // Handle different response formats based on provider |
| 763 | 522 | if (strpos($selected_model, 'gemini-embedding') === 0) { |
| 764 | 523 | // Gemini API response format |
| 765 | 524 | if (isset($response_body['embedding']['values']) && is_array($response_body['embedding']['values'])) { |
| 766 | - self::stamp_active_embedding_model($selected_model); | |
| 767 | 525 | return $response_body['embedding']['values']; |
| 768 | 526 | } else { |
| 769 | - return self::embedding_failure_error($response, $selected_model, $api_key, $bot_id); | |
| 527 | + //error_log('Invalid response received from Gemini embedding API for bot ' . $bot_id . ': ' . wp_json_encode($response_body)); | |
| 528 | + return null; | |
| 770 | 529 | } |
| 771 | 530 | } else { |
| 772 | 531 | // OpenAI/Voyage API response format |
| 773 | 532 | if (isset($response_body['data'][0]['embedding']) && is_array($response_body['data'][0]['embedding'])) { |
| 774 | - self::stamp_active_embedding_model($selected_model); | |
| 775 | 533 | return $response_body['data'][0]['embedding']; |
| 776 | 534 | } else { |
| 777 | - return self::embedding_failure_error($response, $selected_model, $api_key, $bot_id); | |
| 535 | + //error_log('Invalid response received from embedding API for bot ' . $bot_id . ': ' . wp_json_encode($response_body)); | |
| 536 | + return null; | |
| 778 | 537 | } |
| 779 | 538 | } |
| 780 | 539 | } |
| 781 | 540 | |
| 782 | 541 | /** |
| 783 | - * Build a WP_Error carrying the embedding provider's REAL failure reason, | |
| 784 | - * and record it in the Debug Mode log. Previously every failure path | |
| 785 | - * returned bare null, so customers saw only "Failed to generate embedding | |
| 786 | - * for content" / "Failed to store any chunks" with no cause (plan 4a7c0a). | |
| 787 | - * | |
| 788 | - * The API key never appears in provider response bodies (it travels in the | |
| 789 | - * request headers), but the reason is scrubbed for it anyway before it can | |
| 790 | - * reach a notice or the debug log. | |
| 791 | - */ | |
| 792 | -private static function embedding_failure_error($response, $selected_model, $api_key, $bot_id) { | |
| 793 | - $status = (int) wp_remote_retrieve_response_code($response); | |
| 794 | - $raw = (string) wp_remote_retrieve_body($response); | |
| 795 | - $decoded = json_decode($raw, true); | |
| 796 | - | |
| 797 | - // Provider error shapes: OpenAI + Gemini use {"error":{"message":…}}; | |
| 798 | - // Voyage uses {"detail":…}. | |
| 799 | - $reason = ''; | |
| 800 | - if (is_array($decoded)) { | |
| 801 | - if (isset($decoded['error']['message']) && is_string($decoded['error']['message'])) { | |
| 802 | - $reason = $decoded['error']['message']; | |
| 803 | - } elseif (isset($decoded['detail']) && is_string($decoded['detail'])) { | |
| 804 | - $reason = $decoded['detail']; | |
| 805 | - } | |
| 806 | - } | |
| 807 | - if ($reason === '') { | |
| 808 | - $reason = ($raw !== '') ? substr($raw, 0, 200) : 'empty or malformed response'; | |
| 809 | - } | |
| 810 | - if (is_string($api_key) && $api_key !== '') { | |
| 811 | - $reason = str_replace($api_key, '[redacted]', $reason); | |
| 812 | - } | |
| 813 | - $reason = substr($reason, 0, 300); | |
| 814 | - $message = sprintf('Embedding failed (%s, HTTP %d): %s', $selected_model, $status, $reason); | |
| 815 | - | |
| 816 | - if (class_exists('MxChat_Admin')) { | |
| 817 | - MxChat_Admin::mxchat_log_debug('embedding_error', $message, array( | |
| 818 | - 'model' => $selected_model, | |
| 819 | - 'status' => $status, | |
| 820 | - 'bot_id' => $bot_id, | |
| 821 | - )); | |
| 822 | - } | |
| 823 | - | |
| 824 | - return new WP_Error('embedding_failed', $message); | |
| 825 | -} | |
| 826 | - | |
| 827 | -/** | |
| 828 | - * Generate an embedding via a Custom (OpenAI-compatible) provider's /embeddings route. | |
| 829 | - * Shared by every embedding entry point so the KNOWLEDGE-BASE INDEX side and the | |
| 830 | - * QUERY side route through the same model when the opt-in | |
| 831 | - * 'custom_provider_for_embeddings' setting is on. Mirrors the query-path logic in | |
| 832 | - * MxChat_Integrator::mxchat_generate_embedding_custom() but takes an explicit | |
| 833 | - * $options array so it is callable statically from utils + knowledge-manager. | |
| 834 | - * | |
| 835 | - * Returns a numeric array (the embedding vector) on success, or a human-readable | |
| 836 | - * error string on failure (so callers expecting a string error, like the | |
| 837 | - * knowledge-manager, can surface it directly; callers expecting array|null wrap it). | |
| 838 | - * | |
| 839 | - * @param string $text Text to embed. | |
| 840 | - * @param array $options The resolved mxchat options (must contain the custom_provider_* keys). | |
| 841 | - * @return array|string Embedding vector on success; error string on failure. | |
| 842 | - */ | |
| 843 | -public static function generate_embedding_custom($text, $options) { | |
| 844 | - if (empty($text)) { | |
| 845 | - return 'No text provided for embedding generation'; | |
| 846 | - } | |
| 847 | - | |
| 848 | - $base_url = isset($options['custom_provider_base_url']) ? rtrim(trim((string) $options['custom_provider_base_url']), '/') : ''; | |
| 849 | - if (empty($base_url)) { | |
| 850 | - return 'Custom provider Base URL is not configured.'; | |
| 851 | - } | |
| 852 | - | |
| 853 | - $api_key = isset($options['custom_provider_api_key']) ? trim((string) $options['custom_provider_api_key']) : ''; | |
| 854 | - $auth_scheme = isset($options['custom_provider_auth_scheme']) ? $options['custom_provider_auth_scheme'] : 'bearer'; | |
| 855 | - $api_version = isset($options['custom_provider_api_version']) ? trim((string) $options['custom_provider_api_version']) : ''; | |
| 856 | - | |
| 857 | - // Embedding model: shared resolver (dedicated embedding model -> chat model | |
| 858 | - // -> 'default') — the mismatch warning's "selected" side reads the same chain. | |
| 859 | - $model = self::resolve_custom_embedding_model($options); | |
| 860 | - | |
| 861 | - $embed_url = $base_url . '/embeddings'; | |
| 862 | - if (!empty($api_version)) { | |
| 863 | - $embed_url .= (strpos($embed_url, '?') === false ? '?' : '&') . 'api-version=' . rawurlencode($api_version); | |
| 864 | - } | |
| 865 | - | |
| 866 | - $headers = ['Content-Type' => 'application/json']; | |
| 867 | - if (!empty($api_key)) { | |
| 868 | - if ($auth_scheme === 'api-key') { | |
| 869 | - $headers['api-key'] = $api_key; | |
| 870 | - } else { | |
| 871 | - $headers['Authorization'] = 'Bearer ' . $api_key; | |
| 872 | - } | |
| 873 | - } | |
| 874 | - | |
| 875 | - $response = wp_remote_post($embed_url, [ | |
| 876 | - 'headers' => $headers, | |
| 877 | - 'body' => wp_json_encode(['input' => $text, 'model' => $model]), | |
| 878 | - 'timeout' => 60, | |
| 879 | - ]); | |
| 880 | - if (is_wp_error($response)) { | |
| 881 | - return 'Connection error when generating embeddings (custom provider): ' . $response->get_error_message(); | |
| 882 | - } | |
| 883 | - | |
| 884 | - $status = wp_remote_retrieve_response_code($response); | |
| 885 | - $body = json_decode(wp_remote_retrieve_body($response), true); | |
| 886 | - if ($status !== 200) { | |
| 887 | - $msg = isset($body['error']['message']) ? $body['error']['message'] : 'HTTP ' . $status; | |
| 888 | - return 'Custom embedding endpoint error: ' . $msg; | |
| 889 | - } | |
| 890 | - if (isset($body['data'][0]['embedding']) && is_array($body['data'][0]['embedding'])) { | |
| 891 | - // Stamp the custom model identity so the active-embedding-model mismatch | |
| 892 | - // warning reflects the real (custom) model rather than the built-in setting. | |
| 893 | - self::stamp_active_embedding_model('custom:' . $model); | |
| 894 | - return $body['data'][0]['embedding']; | |
| 895 | - } | |
| 896 | - return 'Invalid embedding response from custom provider.'; | |
| 897 | -} | |
| 898 | - | |
| 899 | -/** | |
| 900 | 542 | * Submit content as multiple chunks |
| 901 | 543 | * |
| 902 | 544 | * Splits large content into chunks, generates embeddings for each, |
| 903 | 545 | * and stores them with chunk metadata for later reassembly. |
| @@ -939,44 +581,13 @@ | ||
| 939 | 581 | return new WP_Error('chunking_failed', 'Content could not be split into chunks'); |
| 940 | 582 | } |
| 941 | 583 | |
| 942 | 584 | $errors = array(); |
| 943 | - $embed_failures = 0; | |
| 944 | - $first_embed_reason = ''; | |
| 945 | - $first_store_reason = ''; | |
| 946 | 585 | $is_pinecone = self::is_pinecone_enabled_for_bot($bot_id); |
| 947 | 586 | |
| 948 | 587 | foreach ($chunks as $index => $chunk_text) { |
| 949 | 588 | // Generate chunk metadata |
| 950 | 589 | $chunk_metadata = MxChat_Chunker::create_chunk_metadata($index, $total_chunks, $source_url); |
| 951 | - | |
| 952 | - // AI-Engine-style aliases so external consumers (Pinecone/Qdrant/Chroma) can rely on | |
| 953 | - // a stable shorthand ('source'/'part_index'/'part_total') without parsing our internal names. | |
| 954 | - $chunk_metadata['source'] = $source_url; | |
| 955 | - $chunk_metadata['part_index'] = (int) $index; | |
| 956 | - $chunk_metadata['part_total'] = (int) $total_chunks; | |
| 957 | - | |
| 958 | - /** | |
| 959 | - * Filter the per-chunk metadata blob before it's written to the KB store. | |
| 960 | - * | |
| 961 | - * @param array $chunk_metadata Metadata array (source, part_index, part_total, chunk_index, total_chunks, source_url, parent_url_hash, document_type, ...). | |
| 962 | - * @param string $chunk_text The chunk text being stored. | |
| 963 | - * @param array $context ['bot_id' => string, 'content_type' => string, 'source_url' => string, 'part_index' => int, 'part_total' => int] | |
| 964 | - * @return array Updated metadata array. | |
| 965 | - */ | |
| 966 | - $chunk_metadata = apply_filters( | |
| 967 | - 'mxchat_embedding_chunk_metadata', | |
| 968 | - $chunk_metadata, | |
| 969 | - $chunk_text, | |
| 970 | - array( | |
| 971 | - 'bot_id' => $bot_id, | |
| 972 | - 'content_type' => $content_type, | |
| 973 | - 'source_url' => $source_url, | |
| 974 | - 'part_index' => (int) $index, | |
| 975 | - 'part_total' => (int) $total_chunks, | |
| 976 | - ) | |
| 977 | - ); | |
| 978 | - | |
| 979 | 590 | $chunk_vector_id = MxChat_Chunker::generate_chunk_vector_id($source_url, $index); |
| 980 | 591 | |
| 981 | 592 | //error_log('[MXCHAT-CHUNK] Processing chunk ' . ($index + 1) . '/' . $total_chunks . ' (ID: ' . $chunk_vector_id . ')'); |
| 982 | 593 | |
| @@ -983,17 +594,10 @@ | ||
| 983 | 594 | // Generate embedding for this chunk |
| 984 | 595 | $embedding_vector = self::generate_embedding($chunk_text, $api_key, $bot_id); |
| 985 | 596 | |
| 986 | 597 | if (!is_array($embedding_vector)) { |
| 987 | - // Track embedding failures separately from storage failures, and | |
| 988 | - // keep the first provider reason seen — the two failure classes | |
| 989 | - // have opposite remedies (API key vs Pinecone/DB) (plan 4a7c0a). | |
| 990 | - $embed_failures++; | |
| 991 | - $reason = is_wp_error($embedding_vector) ? $embedding_vector->get_error_message() : ''; | |
| 992 | - if ($reason !== '' && $first_embed_reason === '') { | |
| 993 | - $first_embed_reason = $reason; | |
| 994 | - } | |
| 995 | - $errors[] = new WP_Error('embedding_failed', 'Failed to generate embedding for chunk ' . $index . ($reason !== '' ? ' — ' . $reason : '')); | |
| 598 | + $errors[] = new WP_Error('embedding_failed', 'Failed to generate embedding for chunk ' . $index); | |
| 599 | + //error_log('[MXCHAT-CHUNK] Failed to generate embedding for chunk ' . $index); | |
| 996 | 600 | continue; |
| 997 | 601 | } |
| 998 | 602 | |
| 999 | 603 | if ($is_pinecone) { |
| @@ -1023,44 +627,20 @@ | ||
| 1023 | 627 | } |
| 1024 | 628 | |
| 1025 | 629 | if (is_wp_error($result)) { |
| 1026 | 630 | $errors[] = $result; |
| 1027 | - if ($first_store_reason === '') { | |
| 1028 | - $first_store_reason = $result->get_error_message(); | |
| 1029 | - } | |
| 631 | + //error_log('[MXCHAT-CHUNK] Failed to store chunk ' . $index . ': ' . $result->get_error_message()); | |
| 1030 | 632 | } |
| 1031 | 633 | } |
| 1032 | 634 | |
| 1033 | 635 | if (count($errors) === $total_chunks) { |
| 1034 | - // Say WHICH stage failed — "failed to store" used to cover pure | |
| 1035 | - // embedding failures too, sending customers to debug Pinecone when | |
| 1036 | - // the problem was their embedding API key (plan 4a7c0a). | |
| 1037 | - if ($embed_failures === $total_chunks) { | |
| 1038 | - return new WP_Error('chunking_failed', | |
| 1039 | - 'Failed to store any chunks — every chunk failed to embed' | |
| 1040 | - . ($first_embed_reason !== '' ? ': ' . $first_embed_reason : '') | |
| 1041 | - . ' Check the embedding provider API key and model under MxChat Settings.'); | |
| 1042 | - } | |
| 1043 | - if ($embed_failures === 0) { | |
| 1044 | - return new WP_Error('chunking_failed', | |
| 1045 | - 'Failed to store any chunks — embeddings generated but storage failed' | |
| 1046 | - . ($first_store_reason !== '' ? ': ' . $first_store_reason : '') | |
| 1047 | - . ' Check the knowledge base storage (Pinecone index or database).'); | |
| 1048 | - } | |
| 1049 | - return new WP_Error('chunking_failed', sprintf( | |
| 1050 | - 'Failed to store any chunks — %d failed to embed%s and %d failed to store%s', | |
| 1051 | - $embed_failures, | |
| 1052 | - $first_embed_reason !== '' ? ' (' . $first_embed_reason . ')' : '', | |
| 1053 | - $total_chunks - $embed_failures, | |
| 1054 | - $first_store_reason !== '' ? ' (' . $first_store_reason . ')' : '' | |
| 1055 | - )); | |
| 636 | + return new WP_Error('chunking_failed', 'Failed to store any chunks'); | |
| 1056 | 637 | } |
| 1057 | 638 | |
| 1058 | 639 | if (!empty($errors)) { |
| 1059 | - $detail = $first_embed_reason !== '' ? $first_embed_reason : $first_store_reason; | |
| 640 | + //error_log('[MXCHAT-CHUNK] Completed with ' . count($errors) . ' errors out of ' . $total_chunks . ' chunks'); | |
| 1060 | 641 | return new WP_Error('chunking_partial_failure', |
| 1061 | - sprintf('Failed to store %d of %d chunks', count($errors), $total_chunks) | |
| 1062 | - . ($detail !== '' ? ' — first error: ' . $detail : '')); | |
| 642 | + sprintf('Failed to store %d of %d chunks', count($errors), $total_chunks)); | |
| 1063 | 643 | } |
| 1064 | 644 | |
| 1065 | 645 | //error_log('[MXCHAT-CHUNK] Successfully stored all ' . $total_chunks . ' chunks'); |
| 1066 | 646 | return true; |
| @@ -1106,9 +686,9 @@ | ||
| 1106 | 686 | 'total_chunks' => $chunk_metadata['total_chunks'], |
| 1107 | 687 | 'parent_url_hash' => $chunk_metadata['parent_url_hash'], |
| 1108 | 688 | 'last_updated' => time(), |
| 1109 | 689 | 'created_at' => time(), |
| 1110 | - 'bot_id' => $bot_id, | |
| 690 | + 'bot_id' => $bot_id | |
| 1111 | 691 | ); |
| 1112 | 692 | |
| 1113 | 693 | $vector_data = array( |
| 1114 | 694 | 'id' => $vector_id, |
| @@ -1224,34 +804,31 @@ | ||
| 1224 | 804 | |
| 1225 | 805 | // Add the original single-vector ID (for non-chunked content) |
| 1226 | 806 | $vectors_to_delete[] = $base_vector_id; |
| 1227 | 807 | |
| 1228 | - // Pinecone /vectors/list is a GET endpoint with query-string parameters; a POST here returns a | |
| 1229 | - // non-200 silently and we end up only deleting the base vector, leaving chunks orphaned. | |
| 1230 | - $query_params = array( | |
| 808 | + // Use Pinecone list API to find all chunk vectors with this prefix | |
| 809 | + $list_url = "https://{$host}/vectors/list"; | |
| 810 | + | |
| 811 | + $list_body = array( | |
| 1231 | 812 | 'prefix' => $base_vector_id . '_chunk_', |
| 1232 | - 'limit' => 100, | |
| 813 | + 'limit' => 100 | |
| 1233 | 814 | ); |
| 815 | + | |
| 1234 | 816 | if (!empty($namespace)) { |
| 1235 | - $query_params['namespace'] = $namespace; | |
| 817 | + $list_body['namespace'] = $namespace; | |
| 1236 | 818 | } |
| 1237 | 819 | |
| 1238 | - $list_url = "https://{$host}/vectors/list?" . http_build_query($query_params); | |
| 820 | + $list_response = wp_remote_post($list_url, array( | |
| 821 | + 'headers' => array( | |
| 822 | + 'Api-Key' => $api_key, | |
| 823 | + 'accept' => 'application/json', | |
| 824 | + 'content-type' => 'application/json' | |
| 825 | + ), | |
| 826 | + 'body' => wp_json_encode($list_body), | |
| 827 | + 'timeout' => 30 | |
| 828 | + )); | |
| 1239 | 829 | |
| 1240 | - // Paginate in case a URL has more than 100 chunks. | |
| 1241 | - do { | |
| 1242 | - $list_response = wp_remote_get($list_url, array( | |
| 1243 | - 'headers' => array( | |
| 1244 | - 'Api-Key' => $api_key, | |
| 1245 | - 'accept' => 'application/json', | |
| 1246 | - ), | |
| 1247 | - 'timeout' => 30, | |
| 1248 | - )); | |
| 1249 | - | |
| 1250 | - if (is_wp_error($list_response) || wp_remote_retrieve_response_code($list_response) !== 200) { | |
| 1251 | - break; | |
| 1252 | - } | |
| 1253 | - | |
| 830 | + if (!is_wp_error($list_response)) { | |
| 1254 | 831 | $list_data = json_decode(wp_remote_retrieve_body($list_response), true); |
| 1255 | 832 | if (!empty($list_data['vectors'])) { |
| 1256 | 833 | foreach ($list_data['vectors'] as $vector) { |
| 1257 | 834 | if (isset($vector['id'])) { |
| @@ -1258,18 +835,10 @@ | ||
| 1258 | 835 | $vectors_to_delete[] = $vector['id']; |
| 1259 | 836 | } |
| 1260 | 837 | } |
| 1261 | 838 | } |
| 839 | + } | |
| 1262 | 840 | |
| 1263 | - $next_token = $list_data['pagination']['next'] ?? ''; | |
| 1264 | - if (empty($next_token)) { | |
| 1265 | - break; | |
| 1266 | - } | |
| 1267 | - | |
| 1268 | - $query_params['paginationToken'] = $next_token; | |
| 1269 | - $list_url = "https://{$host}/vectors/list?" . http_build_query($query_params); | |
| 1270 | - } while (true); | |
| 1271 | - | |
| 1272 | 841 | if (empty($vectors_to_delete)) { |
| 1273 | 842 | //error_log('[MXCHAT-CHUNK-DELETE] No vectors found to delete'); |
| 1274 | 843 | return true; |
| 1275 | 844 | } |
| @@ -1328,42 +897,6 @@ | ||
| 1328 | 897 | } |
| 1329 | 898 | |
| 1330 | 899 | //error_log('[MXCHAT-CHUNK-DELETE] Deleted ' . $result . ' rows from WordPress DB'); |
| 1331 | 900 | return true; |
| 1332 | -} | |
| 1333 | - | |
| 1334 | -/** | |
| 1335 | - * Hybrid keyword boost (plan-38ffa1): detect whether the WP-DB knowledge | |
| 1336 | - * table can serve the keyword leg via a MySQL FULLTEXT index, creating the | |
| 1337 | - * index if needed. Detection runs once and caches the answer in the | |
| 1338 | - * mxchat_hybrid_keyword_capability option ('fulltext' | 'like'); pass | |
| 1339 | - * $force to re-detect. LIKE is the graceful fallback for shared hosts | |
| 1340 | - * whose ALTER fails — the feature works either way, FULLTEXT just ranks | |
| 1341 | - * better and scales. | |
| 1342 | - * | |
| 1343 | - * @param bool $force Re-run detection even if a cached answer exists. | |
| 1344 | - * @return string 'fulltext' or 'like' | |
| 1345 | - */ | |
| 1346 | -public static function mxchat_hybrid_detect_capability($force = false) { | |
| 1347 | - $cached = get_option('mxchat_hybrid_keyword_capability', ''); | |
| 1348 | - if (!$force && in_array($cached, array('fulltext', 'like'), true)) { | |
| 1349 | - return $cached; | |
| 1350 | - } | |
| 1351 | - | |
| 1352 | - global $wpdb; | |
| 1353 | - $table = $wpdb->prefix . 'mxchat_system_prompt_content'; | |
| 1354 | - | |
| 1355 | - $index_exists = $wpdb->get_var("SHOW INDEX FROM {$table} WHERE Key_name = 'mxchat_content_ft'"); | |
| 1356 | - if (!$index_exists) { | |
| 1357 | - // Suppress the visible error on hosts where this is not permitted — | |
| 1358 | - // failure is an expected, handled outcome (LIKE fallback). | |
| 1359 | - $suppress = $wpdb->suppress_errors(true); | |
| 1360 | - $wpdb->query("ALTER TABLE {$table} ADD FULLTEXT INDEX mxchat_content_ft (article_content)"); | |
| 1361 | - $wpdb->suppress_errors($suppress); | |
| 1362 | - $index_exists = $wpdb->get_var("SHOW INDEX FROM {$table} WHERE Key_name = 'mxchat_content_ft'"); | |
| 1363 | - } | |
| 1364 | - | |
| 1365 | - $capability = $index_exists ? 'fulltext' : 'like'; | |
| 1366 | - update_option('mxchat_hybrid_keyword_capability', $capability); | |
| 1367 | - return $capability; | |
| 1368 | 901 | } |
| 1369 | 902 | } |
