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MxChat – AI Chatbot & Content Generation for WordPress / 3.0.9
MxChat – AI Chatbot & Content Generation for WordPress v3.0.9
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mxchat-basic / admin / class-pinecone-manager.php

class-pinecone-manager.php in MxChat – AI Chatbot & Content Generation for WordPress 3.0.9, at admin/class-pinecone-manager.php

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1 <?php
2 /**
3 * File: admin/class-pinecone-manager.php
4 *
5 * Handles all Pinecone vector database operations for MxChat
6 */
7
8 if (!defined('ABSPATH')) {
9 exit; // Exit if accessed directly
10 }
11
12 class MxChat_Pinecone_Manager {
13
14 /**
15 * Constructor
16 */
17 public function __construct() {
18 // Hook into WordPress actions if needed
19 add_action('mxchat_delete_content', array($this, 'mxchat_delete_from_pinecone_by_url'), 10, 1);
20 }
21
22 // ========================================
23 // PINECONE FETCH OPERATIONS
24 // ========================================
25
26
27 /**
28 * Fetches records from Pinecone with bot-specific filtering
29 * UPDATED 2.6.1: Optimized for large datasets - uses server-side pagination
30 */
31 public function mxchat_fetch_pinecone_records($pinecone_options, $search_query = '', $page = 1, $per_page = 20, $bot_id = 'default', $content_type = '') {
32 $api_key = $pinecone_options['mxchat_pinecone_api_key'] ?? '';
33 $host = $pinecone_options['mxchat_pinecone_host'] ?? '';
34 $namespace = $pinecone_options['mxchat_pinecone_namespace'] ?? '';
35
36 if (empty($api_key) || empty($host)) {
37 return array('data' => array(), 'total' => 0, 'total_in_database' => 0, 'showing_recent_only' => false);
38 }
39
40 try {
41 // Get total count for the banner message (bot-specific) - lightweight call
42 $total_in_database = $this->mxchat_get_pinecone_total_count($pinecone_options, $bot_id);
43
44 // For large databases, use optimized paginated fetching
45 // Only fetch what we need for the current page, not all 1K records
46 if ($total_in_database > 500) {
47 $result = $this->mxchat_fetch_pinecone_page_optimized($pinecone_options, $search_query, $page, $per_page, $bot_id, $content_type);
48 $result['total_in_database'] = $total_in_database;
49 $result['showing_recent_only'] = true; // Always show banner when we're limiting results
50 return $result;
51 }
52
53 // For smaller databases, use the existing approach but with safety limits
54 $all_records = $this->mxchat_get_recent_entries_safe($pinecone_options, $bot_id, 500);
55
56 // Filter by content type if provided
57 if (!empty($content_type)) {
58 $all_records = array_filter($all_records, function($record) use ($content_type) {
59 $record_type = $record->type ?? 'content';
60 return $record_type === $content_type;
61 });
62 $all_records = array_values($all_records); // Re-index array
63 }
64
65 // Filter by search query if provided
66 if (!empty($search_query)) {
67 $all_records = array_filter($all_records, function($record) use ($search_query) {
68 $content = $record->article_content ?? '';
69 $source_url = $record->source_url ?? '';
70 return stripos($content, $search_query) !== false || stripos($source_url, $search_query) !== false;
71 });
72 $all_records = array_values($all_records); // Re-index array
73 }
74
75 // UPDATED 2.6.3: Group records by source_url for chunk-aware pagination
76 // This ensures pagination shows X entries per page, not X chunks
77 $grouped_by_url = array();
78 $empty_url_records = array();
79
80 foreach ($all_records as $record) {
81 $source_url = $record->source_url ?? '';
82 if (empty($source_url)) {
83 $empty_url_records[] = $record;
84 } else {
85 if (!isset($grouped_by_url[$source_url])) {
86 $grouped_by_url[$source_url] = array();
87 }
88 $grouped_by_url[$source_url][] = $record;
89 }
90 }
91
92 // Count unique entries (unique URLs + individual empty-URL records)
93 $total_unique_entries = count($grouped_by_url) + count($empty_url_records);
94
95 // Paginate by unique entries
96 $offset = ($page - 1) * $per_page;
97
98 // Build ordered list of URL groups (newest first based on first record)
99 $url_groups_ordered = array_keys($grouped_by_url);
100
101 // Get the URLs for this page
102 $page_urls = array_slice($url_groups_ordered, $offset, $per_page);
103
104 // Collect all records for this page's URLs
105 $paged_records = array();
106 foreach ($page_urls as $url) {
107 foreach ($grouped_by_url[$url] as $record) {
108 $paged_records[] = $record;
109 }
110 }
111
112 // Add empty-URL records if they fall within this page's range
113 $remaining_slots = $per_page - count($page_urls);
114 $empty_offset = max(0, $offset - count($grouped_by_url));
115 if ($remaining_slots > 0 && $empty_offset < count($empty_url_records)) {
116 $empty_page_records = array_slice($empty_url_records, $empty_offset, $remaining_slots);
117 $paged_records = array_merge($paged_records, $empty_page_records);
118 }
119
120 return array(
121 'data' => $paged_records,
122 'total' => $total_unique_entries,
123 'total_in_database' => $total_in_database,
124 'showing_recent_only' => ($total_in_database > 500)
125 );
126
127 } catch (Exception $e) {
128 error_log('MxChat Pinecone fetch error: ' . $e->getMessage());
129 MxChat_Admin::mxchat_log_debug('pinecone_error', 'Pinecone fetch error: ' . $e->getMessage());
130 return array('data' => array(), 'total' => 0, 'total_in_database' => 0, 'showing_recent_only' => false);
131 }
132 }
133
134 /**
135 * Optimized fetch for large Pinecone databases
136 * ADDED 2.6.1: Prevents crashes with large datasets
137 * UPDATED 2.6.1: When searching, uses semantic search with embedded query for accurate results across all 13K+ records
138 */
139 private function mxchat_fetch_pinecone_page_optimized($pinecone_options, $search_query = '', $page = 1, $per_page = 20, $bot_id = 'default', $content_type = '') {
140 $api_key = $pinecone_options['mxchat_pinecone_api_key'] ?? '';
141 $host = $pinecone_options['mxchat_pinecone_host'] ?? '';
142 $namespace = $pinecone_options['mxchat_pinecone_namespace'] ?? '';
143
144 try {
145 // If user is searching, use semantic search with embedded query
146 // This searches ALL records in Pinecone, not just fetched ones
147 if (!empty($search_query)) {
148 return $this->mxchat_semantic_search_pinecone($pinecone_options, $search_query, $page, $per_page, $bot_id, $content_type);
149 }
150
151 // For browsing (no search), use Pinecone's list endpoint for true pagination
152 return $this->mxchat_list_pinecone_records($pinecone_options, $page, $per_page, $bot_id, $content_type);
153
154 } catch (Exception $e) {
155 error_log('MxChat optimized fetch exception: ' . $e->getMessage());
156 MxChat_Admin::mxchat_log_debug('pinecone_error', 'Pinecone optimized fetch error: ' . $e->getMessage());
157 return array('data' => array(), 'total' => 0);
158 }
159 }
160
161 /**
162 * Semantic search across ALL Pinecone records using embedded search query
163 * This allows users to find any of their 13K+ products by searching
164 * ADDED 2.6.1
165 */
166 private function mxchat_semantic_search_pinecone($pinecone_options, $search_query, $page = 1, $per_page = 20, $bot_id = 'default', $content_type = '') {
167 $api_key = $pinecone_options['mxchat_pinecone_api_key'] ?? '';
168 $host = $pinecone_options['mxchat_pinecone_host'] ?? '';
169 $namespace = $pinecone_options['mxchat_pinecone_namespace'] ?? '';
170
171 // Get embedding for the search query
172 $query_embedding = $this->mxchat_get_search_embedding($search_query);
173
174 if (empty($query_embedding)) {
175 // Fallback to text-based search if embedding fails
176 return $this->mxchat_text_search_fallback($pinecone_options, $search_query, $page, $per_page, $bot_id, $content_type);
177 }
178
179 $query_url = "https://{$host}/query";
180
181 // Fetch more results to allow for filtering and pagination
182 $fetch_limit = min(($page * $per_page) + 100, 500);
183
184 $query_data = array(
185 'includeMetadata' => true,
186 'includeValues' => false,
187 'topK' => $fetch_limit,
188 'vector' => $query_embedding
189 );
190
191 if (!empty($namespace)) {
192 $query_data['namespace'] = $namespace;
193 }
194
195 // Add metadata filter for content type if specified
196 if (!empty($content_type)) {
197 $query_data['filter'] = array(
198 'type' => array('$eq' => $content_type)
199 );
200 }
201
202 $response = wp_remote_post($query_url, array(
203 'headers' => array(
204 'Api-Key' => $api_key,
205 'Content-Type' => 'application/json'
206 ),
207 'body' => json_encode($query_data),
208 'timeout' => 20
209 ));
210
211 if (is_wp_error($response) || wp_remote_retrieve_response_code($response) !== 200) {
212 return $this->mxchat_text_search_fallback($pinecone_options, $search_query, $page, $per_page, $bot_id, $content_type);
213 }
214
215 $body = wp_remote_retrieve_body($response);
216 $data = json_decode($body, true);
217
218 $records = array();
219 if (isset($data['matches'])) {
220 foreach ($data['matches'] as $match) {
221 $metadata = $match['metadata'] ?? array();
222 $created_at = $metadata['created_at'] ?? $metadata['last_updated'] ?? $metadata['timestamp'] ?? time();
223 if (!is_numeric($created_at)) {
224 $created_at = strtotime($created_at) ?: time();
225 }
226
227 $records[] = (object) array(
228 'id' => $match['id'] ?? '',
229 'article_content' => $metadata['text'] ?? '',
230 'source_url' => $metadata['source_url'] ?? '',
231 'role_restriction' => $metadata['role_restriction'] ?? 'public',
232 'type' => $metadata['type'] ?? 'content',
233 'bot_id' => $bot_id,
234 'created_at' => $created_at,
235 'data_source' => 'pinecone',
236 'relevance_score' => $match['score'] ?? 0,
237 'chunk_index' => isset($metadata['chunk_index']) ? intval($metadata['chunk_index']) : null,
238 'total_chunks' => isset($metadata['total_chunks']) ? intval($metadata['total_chunks']) : null,
239 'is_chunked' => isset($metadata['is_chunked']) ? (bool) $metadata['is_chunked'] : false
240 );
241 }
242 }
243
244 // For semantic search, results are already sorted by relevance (score)
245 // No need to re-sort by date
246
247 $total = count($records);
248 $offset = ($page - 1) * $per_page;
249 $paged_records = array_slice($records, $offset, $per_page);
250
251 $this->mxchat_batch_fetch_role_restrictions($paged_records, $bot_id);
252
253 return array(
254 'data' => $paged_records,
255 'total' => $total
256 );
257 }
258
259 /**
260 * Get embedding vector for a search query
261 * Uses the same embedding model configured for the knowledge base
262 * ADDED 2.6.1
263 */
264 private function mxchat_get_search_embedding($search_query) {
265 $options = get_option('mxchat_options', array());
266 $embedding_model = $options['embedding_model'] ?? 'text-embedding-ada-002';
267
268 // Determine which API to use based on model
269 if (strpos($embedding_model, 'voyage-') === 0) {
270 return $this->mxchat_get_voyage_embedding($search_query, $options, $embedding_model);
271 } elseif (strpos($embedding_model, 'gemini-') === 0) {
272 return $this->mxchat_get_gemini_embedding($search_query, $options, $embedding_model);
273 } else {
274 return $this->mxchat_get_openai_embedding($search_query, $options, $embedding_model);
275 }
276 }
277
278 /**
279 * Get OpenAI embedding for search query
280 */
281 private function mxchat_get_openai_embedding($text, $options, $model) {
282 $api_key = $options['api_key'] ?? '';
283 if (empty($api_key)) {
284 return null;
285 }
286
287 $response = wp_remote_post('https://api.openai.com/v1/embeddings', array(
288 'headers' => array(
289 'Authorization' => 'Bearer ' . $api_key,
290 'Content-Type' => 'application/json'
291 ),
292 'body' => json_encode(array(
293 'model' => $model,
294 'input' => $text
295 )),
296 'timeout' => 15
297 ));
298
299 if (is_wp_error($response) || wp_remote_retrieve_response_code($response) !== 200) {
300 return null;
301 }
302
303 $body = json_decode(wp_remote_retrieve_body($response), true);
304 return $body['data'][0]['embedding'] ?? null;
305 }
306
307 /**
308 * Get Voyage AI embedding for search query
309 */
310 private function mxchat_get_voyage_embedding($text, $options, $model) {
311 $api_key = $options['voyage_api_key'] ?? '';
312 if (empty($api_key)) {
313 return null;
314 }
315
316 $request_body = array(
317 'model' => $model,
318 'input' => $text,
319 'input_type' => 'query'
320 );
321
322 // Add output dimensions for voyage-3-large if configured
323 if (strpos($model, 'voyage-3-large') === 0 && !empty($options['voyage_output_dimension'])) {
324 $request_body['output_dimension'] = intval($options['voyage_output_dimension']);
325 }
326
327 $response = wp_remote_post('https://api.voyageai.com/v1/embeddings', array(
328 'headers' => array(
329 'Authorization' => 'Bearer ' . $api_key,
330 'Content-Type' => 'application/json'
331 ),
332 'body' => json_encode($request_body),
333 'timeout' => 15
334 ));
335
336 if (is_wp_error($response) || wp_remote_retrieve_response_code($response) !== 200) {
337 return null;
338 }
339
340 $body = json_decode(wp_remote_retrieve_body($response), true);
341 return $body['data'][0]['embedding'] ?? null;
342 }
343
344 /**
345 * Get Google Gemini embedding for search query
346 */
347 private function mxchat_get_gemini_embedding($text, $options, $model) {
348 $api_key = $options['gemini_api_key'] ?? '';
349 if (empty($api_key)) {
350 return null;
351 }
352
353 $url = "https://generativelanguage.googleapis.com/v1beta/models/{$model}:embedContent?key={$api_key}";
354
355 $request_body = array(
356 'model' => "models/{$model}",
357 'content' => array(
358 'parts' => array(
359 array('text' => $text)
360 )
361 ),
362 'taskType' => 'RETRIEVAL_QUERY'
363 );
364
365 // Add output dimensions if configured
366 if (!empty($options['gemini_output_dimension'])) {
367 $request_body['outputDimensionality'] = intval($options['gemini_output_dimension']);
368 }
369
370 $response = wp_remote_post($url, array(
371 'headers' => array(
372 'Content-Type' => 'application/json'
373 ),
374 'body' => json_encode($request_body),
375 'timeout' => 15
376 ));
377
378 if (is_wp_error($response) || wp_remote_retrieve_response_code($response) !== 200) {
379 return null;
380 }
381
382 $body = json_decode(wp_remote_retrieve_body($response), true);
383 return $body['embedding']['values'] ?? null;
384 }
385
386 /**
387 * Fallback text search when embedding fails
388 * Fetches more records and filters by text match
389 * ADDED 2.6.1
390 */
391 private function mxchat_text_search_fallback($pinecone_options, $search_query, $page, $per_page, $bot_id, $content_type) {
392 $api_key = $pinecone_options['mxchat_pinecone_api_key'] ?? '';
393 $host = $pinecone_options['mxchat_pinecone_host'] ?? '';
394 $namespace = $pinecone_options['mxchat_pinecone_namespace'] ?? '';
395
396 $query_url = "https://{$host}/query";
397 $query_vector = $this->mxchat_generate_optimized_query_vector();
398
399 // Fetch more records to search through
400 $query_data = array(
401 'includeMetadata' => true,
402 'includeValues' => false,
403 'topK' => 1000, // Fetch more for text search
404 'vector' => $query_vector
405 );
406
407 if (!empty($namespace)) {
408 $query_data['namespace'] = $namespace;
409 }
410
411 $response = wp_remote_post($query_url, array(
412 'headers' => array(
413 'Api-Key' => $api_key,
414 'Content-Type' => 'application/json'
415 ),
416 'body' => json_encode($query_data),
417 'timeout' => 20
418 ));
419
420 if (is_wp_error($response) || wp_remote_retrieve_response_code($response) !== 200) {
421 return array('data' => array(), 'total' => 0);
422 }
423
424 $body = wp_remote_retrieve_body($response);
425 $data = json_decode($body, true);
426
427 $records = array();
428 $search_lower = strtolower($search_query);
429
430 if (isset($data['matches'])) {
431 foreach ($data['matches'] as $match) {
432 $metadata = $match['metadata'] ?? array();
433
434 // Filter by content type
435 if (!empty($content_type)) {
436 $record_type = $metadata['type'] ?? 'content';
437 if ($record_type !== $content_type) {
438 continue;
439 }
440 }
441
442 // Text search filter
443 $content = strtolower($metadata['text'] ?? '');
444 $source_url = strtolower($metadata['source_url'] ?? '');
445 if (strpos($content, $search_lower) === false && strpos($source_url, $search_lower) === false) {
446 continue;
447 }
448
449 $created_at = $metadata['created_at'] ?? $metadata['last_updated'] ?? $metadata['timestamp'] ?? time();
450 if (!is_numeric($created_at)) {
451 $created_at = strtotime($created_at) ?: time();
452 }
453
454 $records[] = (object) array(
455 'id' => $match['id'] ?? '',
456 'article_content' => $metadata['text'] ?? '',
457 'source_url' => $metadata['source_url'] ?? '',
458 'role_restriction' => $metadata['role_restriction'] ?? 'public',
459 'type' => $metadata['type'] ?? 'content',
460 'bot_id' => $bot_id,
461 'created_at' => $created_at,
462 'data_source' => 'pinecone',
463 'chunk_index' => isset($metadata['chunk_index']) ? intval($metadata['chunk_index']) : null,
464 'total_chunks' => isset($metadata['total_chunks']) ? intval($metadata['total_chunks']) : null,
465 'is_chunked' => isset($metadata['is_chunked']) ? (bool) $metadata['is_chunked'] : false
466 );
467 }
468 }
469
470 // Sort by date for text search results
471 usort($records, function($a, $b) {
472 return $b->created_at - $a->created_at;
473 });
474
475 $total = count($records);
476 $offset = ($page - 1) * $per_page;
477 $paged_records = array_slice($records, $offset, $per_page);
478
479 $this->mxchat_batch_fetch_role_restrictions($paged_records, $bot_id);
480
481 return array(
482 'data' => $paged_records,
483 'total' => $total
484 );
485 }
486
487 /**
488 * List Pinecone records using the list endpoint for true pagination (no search)
489 * This allows browsing through all 13K+ records page by page
490 * ADDED 2.6.1
491 */
492 private function mxchat_list_pinecone_records($pinecone_options, $page = 1, $per_page = 20, $bot_id = 'default', $content_type = '') {
493 $api_key = $pinecone_options['mxchat_pinecone_api_key'] ?? '';
494 $host = $pinecone_options['mxchat_pinecone_host'] ?? '';
495 $namespace = $pinecone_options['mxchat_pinecone_namespace'] ?? '';
496
497 // Pinecone's list endpoint returns vector IDs with pagination
498 // We then fetch the metadata for those specific IDs
499 $list_url = "https://{$host}/vectors/list";
500
501 // Calculate pagination token from page number
502 // Pinecone uses cursor-based pagination, so we need to handle this differently
503 $limit = $per_page * 2; // Fetch extra to account for filtering
504
505 $list_params = array(
506 'limit' => $limit
507 );
508
509 if (!empty($namespace)) {
510 $list_params['namespace'] = $namespace;
511 }
512
513 // For pages beyond first, we need to use pagination_token
514 // Store/retrieve pagination tokens in transients
515 $pagination_key = 'mxchat_pinecone_page_' . md5($host . $namespace . $content_type);
516
517 if ($page > 1) {
518 $stored_tokens = get_transient($pagination_key);
519 if ($stored_tokens && isset($stored_tokens[$page])) {
520 $list_params['paginationToken'] = $stored_tokens[$page];
521 }
522 }
523
524 $response = wp_remote_post($list_url, array(
525 'headers' => array(
526 'Api-Key' => $api_key,
527 'Content-Type' => 'application/json'
528 ),
529 'body' => json_encode($list_params),
530 'timeout' => 15
531 ));
532
533 if (is_wp_error($response) || wp_remote_retrieve_response_code($response) !== 200) {
534 // Fallback to query-based approach
535 return $this->mxchat_query_based_list($pinecone_options, $page, $per_page, $bot_id, $content_type);
536 }
537
538 $body = wp_remote_retrieve_body($response);
539 $data = json_decode($body, true);
540
541 // Store pagination token for next page
542 if (!empty($data['pagination']['next'])) {
543 $stored_tokens = get_transient($pagination_key) ?: array();
544 $stored_tokens[$page + 1] = $data['pagination']['next'];
545 set_transient($pagination_key, $stored_tokens, 300); // 5 minute cache
546 }
547
548 $vector_ids = array();
549 if (isset($data['vectors'])) {
550 foreach ($data['vectors'] as $vector) {
551 $vector_ids[] = $vector['id'];
552 }
553 }
554
555 // If list endpoint returned empty, fall back to query-based approach
556 if (empty($vector_ids)) {
557 return $this->mxchat_query_based_list($pinecone_options, $page, $per_page, $bot_id, $content_type);
558 }
559
560 // Fetch metadata for these vector IDs
561 return $this->mxchat_fetch_vectors_by_ids_for_list($pinecone_options, $vector_ids, $page, $per_page, $bot_id, $content_type);
562 }
563
564 /**
565 * Query-based listing fallback when list endpoint fails
566 * ADDED 2.6.1
567 */
568 private function mxchat_query_based_list($pinecone_options, $page, $per_page, $bot_id, $content_type) {
569 $api_key = $pinecone_options['mxchat_pinecone_api_key'] ?? '';
570 $host = $pinecone_options['mxchat_pinecone_host'] ?? '';
571 $namespace = $pinecone_options['mxchat_pinecone_namespace'] ?? '';
572
573 $query_url = "https://{$host}/query";
574 $query_vector = $this->mxchat_generate_optimized_query_vector();
575
576 // Fetch records - use higher limit to cover large databases
577 // Pinecone query API supports up to 10,000 topK
578 // We fetch more than needed to get accurate total count and enable pagination
579 $fetch_limit = 5000;
580
581 $query_data = array(
582 'includeMetadata' => true,
583 'includeValues' => false,
584 'topK' => $fetch_limit,
585 'vector' => $query_vector
586 );
587
588 if (!empty($namespace)) {
589 $query_data['namespace'] = $namespace;
590 }
591
592 // Add content type filter if specified
593 if (!empty($content_type)) {
594 $query_data['filter'] = array(
595 'type' => array('$eq' => $content_type)
596 );
597 }
598
599 $response = wp_remote_post($query_url, array(
600 'headers' => array(
601 'Api-Key' => $api_key,
602 'Content-Type' => 'application/json'
603 ),
604 'body' => json_encode($query_data),
605 'timeout' => 30
606 ));
607
608 if (is_wp_error($response) || wp_remote_retrieve_response_code($response) !== 200) {
609 return array('data' => array(), 'total' => 0);
610 }
611
612 $body = wp_remote_retrieve_body($response);
613 $data = json_decode($body, true);
614
615 $records = array();
616 if (isset($data['matches'])) {
617 foreach ($data['matches'] as $match) {
618 $metadata = $match['metadata'] ?? array();
619
620 $created_at = $metadata['created_at'] ?? $metadata['last_updated'] ?? $metadata['timestamp'] ?? time();
621 if (!is_numeric($created_at)) {
622 $created_at = strtotime($created_at) ?: time();
623 }
624
625 $records[] = (object) array(
626 'id' => $match['id'] ?? '',
627 'article_content' => $metadata['text'] ?? '',
628 'source_url' => $metadata['source_url'] ?? '',
629 'role_restriction' => $metadata['role_restriction'] ?? 'public',
630 'type' => $metadata['type'] ?? 'content',
631 'bot_id' => $bot_id,
632 'created_at' => $created_at,
633 'data_source' => 'pinecone',
634 'chunk_index' => isset($metadata['chunk_index']) ? intval($metadata['chunk_index']) : null,
635 'total_chunks' => isset($metadata['total_chunks']) ? intval($metadata['total_chunks']) : null,
636 'is_chunked' => isset($metadata['is_chunked']) ? (bool) $metadata['is_chunked'] : false
637 );
638 }
639 }
640
641 // Sort by created_at (newest first)
642 usort($records, function($a, $b) {
643 return $b->created_at - $a->created_at;
644 });
645
646 $total = count($records);
647 $offset = ($page - 1) * $per_page;
648 $paged_records = array_slice($records, $offset, $per_page);
649
650 $this->mxchat_batch_fetch_role_restrictions($paged_records, $bot_id);
651
652 return array(
653 'data' => $paged_records,
654 'total' => $total
655 );
656 }
657
658 /**
659 * Fetch specific vectors by their IDs and format for display
660 * ADDED 2.6.1
661 */
662 private function mxchat_fetch_vectors_by_ids_for_list($pinecone_options, $vector_ids, $page, $per_page, $bot_id, $content_type) {
663 $api_key = $pinecone_options['mxchat_pinecone_api_key'] ?? '';
664 $host = $pinecone_options['mxchat_pinecone_host'] ?? '';
665 $namespace = $pinecone_options['mxchat_pinecone_namespace'] ?? '';
666
667 $fetch_url = "https://{$host}/vectors/fetch";
668
669 $fetch_data = array(
670 'ids' => $vector_ids
671 );
672
673 if (!empty($namespace)) {
674 $fetch_data['namespace'] = $namespace;
675 }
676
677 $response = wp_remote_post($fetch_url, array(
678 'headers' => array(
679 'Api-Key' => $api_key,
680 'Content-Type' => 'application/json'
681 ),
682 'body' => json_encode($fetch_data),
683 'timeout' => 15
684 ));
685
686 if (is_wp_error($response) || wp_remote_retrieve_response_code($response) !== 200) {
687 return array('data' => array(), 'total' => 0);
688 }
689
690 $body = wp_remote_retrieve_body($response);
691 $data = json_decode($body, true);
692
693 $records = array();
694 if (isset($data['vectors'])) {
695 foreach ($data['vectors'] as $vector_id => $vector_data) {
696 $metadata = $vector_data['metadata'] ?? array();
697
698 // Filter by content type if specified
699 if (!empty($content_type)) {
700 $record_type = $metadata['type'] ?? 'content';
701 if ($record_type !== $content_type) {
702 continue;
703 }
704 }
705
706 $created_at = $metadata['created_at'] ?? $metadata['last_updated'] ?? $metadata['timestamp'] ?? time();
707 if (!is_numeric($created_at)) {
708 $created_at = strtotime($created_at) ?: time();
709 }
710
711 $records[] = (object) array(
712 'id' => $vector_id,
713 'article_content' => $metadata['text'] ?? '',
714 'source_url' => $metadata['source_url'] ?? '',
715 'role_restriction' => $metadata['role_restriction'] ?? 'public',
716 'type' => $metadata['type'] ?? 'content',
717 'bot_id' => $bot_id,
718 'created_at' => $created_at,
719 'data_source' => 'pinecone',
720 'chunk_index' => isset($metadata['chunk_index']) ? intval($metadata['chunk_index']) : null,
721 'total_chunks' => isset($metadata['total_chunks']) ? intval($metadata['total_chunks']) : null,
722 'is_chunked' => isset($metadata['is_chunked']) ? (bool) $metadata['is_chunked'] : false
723 );
724 }
725 }
726
727 // Sort by date
728 usort($records, function($a, $b) {
729 return $b->created_at - $a->created_at;
730 });
731
732 $total = count($records);
733 $paged_records = array_slice($records, 0, $per_page);
734
735 $this->mxchat_batch_fetch_role_restrictions($paged_records, $bot_id);
736
737 return array(
738 'data' => $paged_records,
739 'total' => $total
740 );
741 }
742
743 /**
744 * Generate a single optimized query vector for fetching records
745 * Uses a center-weighted approach for best coverage
746 */
747 private function mxchat_generate_optimized_query_vector() {
748 $dimensions = $this->mxchat_get_embedding_dimensions();
749 $vector = array();
750
751 // Create a normalized center-weighted vector
752 $center = $dimensions / 2;
753 for ($i = 0; $i < $dimensions; $i++) {
754 $distance = abs($i - $center) / $center;
755 $vector[] = (1 - $distance) * 0.5;
756 }
757
758 // Normalize to unit length
759 $magnitude = sqrt(array_sum(array_map(function($x) { return $x * $x; }, $vector)));
760 if ($magnitude > 0) {
761 $vector = array_map(function($x) use ($magnitude) { return $x / $magnitude; }, $vector);
762 }
763
764 return $vector;
765 }
766
767 /**
768 * Batch fetch role restrictions for a set of records
769 * Uses a single query instead of N queries
770 * ADDED 2.6.1: Prevents N+1 query problem
771 */
772 private function mxchat_batch_fetch_role_restrictions(&$records, $bot_id = 'default') {
773 if (empty($records)) {
774 return;
775 }
776
777 global $wpdb;
778 $roles_table = $wpdb->prefix . 'mxchat_pinecone_roles';
779
780 // Check if table exists
781 $table_exists = $wpdb->get_var("SHOW TABLES LIKE '{$roles_table}'");
782 if (!$table_exists) {
783 return;
784 }
785
786 // Get all vector IDs that need role lookup
787 $vector_ids = array();
788 foreach ($records as $record) {
789 if (empty($record->role_restriction) || $record->role_restriction === 'public') {
790 $vector_ids[] = $record->id;
791 }
792 }
793
794 if (empty($vector_ids)) {
795 return;
796 }
797
798 // Check if bot_id column exists
799 $columns = $wpdb->get_col("SHOW COLUMNS FROM {$roles_table}");
800 $has_bot_id = in_array('bot_id', $columns);
801
802 // Build single query with IN clause
803 $placeholders = implode(',', array_fill(0, count($vector_ids), '%s'));
804
805 if ($has_bot_id) {
806 $query = $wpdb->prepare(
807 "SELECT vector_id, role_restriction FROM {$roles_table} WHERE vector_id IN ({$placeholders}) AND bot_id = %s",
808 array_merge($vector_ids, array($bot_id))
809 );
810 } else {
811 $query = $wpdb->prepare(
812 "SELECT vector_id, role_restriction FROM {$roles_table} WHERE vector_id IN ({$placeholders})",
813 $vector_ids
814 );
815 }
816
817 $results = $wpdb->get_results($query, OBJECT_K);
818
819 // Apply role restrictions to records
820 foreach ($records as &$record) {
821 if (isset($results[$record->id])) {
822 $record->role_restriction = $results[$record->id]->role_restriction;
823 }
824 }
825 }
826
827 /**
828 * Safe version of get_recent_entries with memory limits
829 * ADDED 2.6.1: Prevents memory exhaustion
830 */
831 private function mxchat_get_recent_entries_safe($pinecone_options, $bot_id = 'default', $limit = 500) {
832 global $wpdb;
833
834 $api_key = $pinecone_options['mxchat_pinecone_api_key'] ?? '';
835 $host = $pinecone_options['mxchat_pinecone_host'] ?? '';
836 $namespace = $pinecone_options['mxchat_pinecone_namespace'] ?? '';
837
838 if (empty($api_key) || empty($host)) {
839 return array();
840 }
841
842 try {
843 $all_records = array();
844 $seen_ids = array();
845 $query_url = "https://{$host}/query";
846
847 // Use only 2 query vectors instead of 5 for better performance
848 $fixed_vectors = array_slice($this->mxchat_generate_fixed_query_vectors(), 0, 2);
849
850 foreach ($fixed_vectors as $query_vector) {
851 // Limit topK to prevent memory issues
852 $topK = min(500, $limit);
853
854 $query_data = array(
855 'includeMetadata' => true,
856 'includeValues' => false,
857 'topK' => $topK,
858 'vector' => $query_vector
859 );
860
861 if (!empty($namespace)) {
862 $query_data['namespace'] = $namespace;
863 }
864
865 $response = wp_remote_post($query_url, array(
866 'headers' => array(
867 'Api-Key' => $api_key,
868 'Content-Type' => 'application/json'
869 ),
870 'body' => json_encode($query_data),
871 'timeout' => 15
872 ));
873
874 if (!is_wp_error($response) && wp_remote_retrieve_response_code($response) === 200) {
875 $body = wp_remote_retrieve_body($response);
876 $data = json_decode($body, true);
877
878 if (isset($data['matches'])) {
879 foreach ($data['matches'] as $match) {
880 $match_id = $match['id'] ?? '';
881 if (!empty($match_id) && !isset($seen_ids[$match_id])) {
882 $metadata = $match['metadata'] ?? array();
883
884 $created_at = $metadata['created_at'] ?? $metadata['last_updated'] ?? $metadata['timestamp'] ?? time();
885 if (!is_numeric($created_at)) {
886 $created_at = strtotime($created_at) ?: time();
887 }
888
889 $all_records[] = (object) array(
890 'id' => $match_id,
891 'article_content' => $metadata['text'] ?? '',
892 'source_url' => $metadata['source_url'] ?? '',
893 'role_restriction' => $metadata['role_restriction'] ?? 'public',
894 'type' => $metadata['type'] ?? 'content',
895 'bot_id' => $bot_id,
896 'created_at' => $created_at,
897 'data_source' => 'pinecone',
898 'chunk_index' => isset($metadata['chunk_index']) ? intval($metadata['chunk_index']) : null,
899 'total_chunks' => isset($metadata['total_chunks']) ? intval($metadata['total_chunks']) : null,
900 'is_chunked' => isset($metadata['is_chunked']) ? (bool) $metadata['is_chunked'] : false
901 );
902
903 $seen_ids[$match_id] = true;
904
905 // Stop if we've reached our limit
906 if (count($all_records) >= $limit) {
907 break 2;
908 }
909 }
910 }
911 }
912 }
913
914 // Minimal delay between requests
915 usleep(50000); // 0.05 second delay
916 }
917
918 // Sort by created_at (newest first) and apply limit
919 usort($all_records, function($a, $b) {
920 return $b->created_at - $a->created_at;
921 });
922
923 $limited_records = array_slice($all_records, 0, $limit);
924
925 // Batch fetch role restrictions
926 $this->mxchat_batch_fetch_role_restrictions($limited_records, $bot_id);
927
928 return $limited_records;
929
930 } catch (Exception $e) {
931 error_log('MxChat safe fetch exception: ' . $e->getMessage());
932 MxChat_Admin::mxchat_log_debug('pinecone_error', 'Pinecone safe fetch error: ' . $e->getMessage());
933 return array();
934 }
935 }
936 /**
937 * Get embedding dimensions based on the selected model
938 * ADD THIS NEW FUNCTION
939 */
940 private function mxchat_get_embedding_dimensions() {
941 $options = get_option('mxchat_options', array());
942 $selected_model = $options['embedding_model'] ?? 'text-embedding-ada-002';
943
944 // Define dimensions for different models
945 $model_dimensions = array(
946 'text-embedding-ada-002' => 1536,
947 'text-embedding-3-small' => 1536,
948 'text-embedding-3-large' => 3072,
949 'voyage-2' => 1024,
950 'voyage-large-2' => 1536,
951 'voyage-3-large' => 2048,
952 'gemini-embedding-001' => 1536,
953 );
954
955 // Check if it's a voyage model with custom dimensions
956 if (strpos($selected_model, 'voyage-3-large') === 0) {
957 $custom_dimensions = $options['voyage_output_dimension'] ?? 2048;
958 return intval($custom_dimensions);
959 }
960
961 // Check if it's a gemini model with custom dimensions
962 if (strpos($selected_model, 'gemini-embedding') === 0) {
963 $custom_dimensions = $options['gemini_output_dimension'] ?? 1536;
964 return intval($custom_dimensions);
965 }
966
967 // Return known dimensions or default to 1536
968 return $model_dimensions[$selected_model] ?? 1536;
969 }
970
971 /**
972 * Generate random unit vector with correct dimensions
973 * ADD THIS NEW FUNCTION
974 */
975 private function mxchat_generate_random_vector() {
976 $dimensions = $this->mxchat_get_embedding_dimensions();
977
978 $random_vector = array();
979 for ($i = 0; $i < $dimensions; $i++) {
980 $random_vector[] = (rand(-1000, 1000) / 1000.0);
981 }
982
983 // Normalize the vector to unit length
984 $magnitude = sqrt(array_sum(array_map(function($x) { return $x * $x; }, $random_vector)));
985 if ($magnitude > 0) {
986 $random_vector = array_map(function($x) use ($magnitude) { return $x / $magnitude; }, $random_vector);
987 }
988
989 return $random_vector;
990 }
991
992
993 /**
994 * Get recent entries from Pinecone
995 * UPDATED 2.6.1: Now uses safe version with memory limits to prevent crashes
996 * @deprecated Use mxchat_get_recent_entries_safe() instead for new code
997 */
998 private function mxchat_get_recent_1k_entries($pinecone_options, $bot_id = 'default') {
999 // Delegate to the safe version with a reasonable limit
1000 // This prevents crashes with large datasets (13K+ products)
1001 return $this->mxchat_get_recent_entries_safe($pinecone_options, $bot_id, 500);
1002 }
1003 /**
1004 * Generate fixed query vectors for consistent results
1005 */
1006 private function mxchat_generate_fixed_query_vectors() {
1007 $dimensions = $this->mxchat_get_embedding_dimensions();
1008 $vectors = array();
1009
1010 // Create 5 fixed vectors with different patterns for better coverage
1011 $patterns = array(
1012 'zeros_with_ones' => 0.1, // Mostly zeros with some 1s
1013 'ascending' => 0.2, // Ascending pattern
1014 'descending' => 0.3, // Descending pattern
1015 'alternating' => 0.4, // Alternating positive/negative
1016 'center_weighted' => 0.5 // Higher values in center
1017 );
1018
1019 foreach ($patterns as $pattern_name => $seed) {
1020 $vector = array();
1021
1022 for ($i = 0; $i < $dimensions; $i++) {
1023 switch ($pattern_name) {
1024 case 'zeros_with_ones':
1025 $vector[] = ($i % 10 === 0) ? 1.0 : 0.0;
1026 break;
1027 case 'ascending':
1028 $vector[] = ($i / $dimensions) * 2 - 1; // Range -1 to 1
1029 break;
1030 case 'descending':
1031 $vector[] = (($dimensions - $i) / $dimensions) * 2 - 1;
1032 break;
1033 case 'alternating':
1034 $vector[] = ($i % 2 === 0) ? $seed : -$seed;
1035 break;
1036 case 'center_weighted':
1037 $center = $dimensions / 2;
1038 $distance = abs($i - $center) / $center;
1039 $vector[] = (1 - $distance) * $seed;
1040 break;
1041 }
1042 }
1043
1044 // Normalize the vector to unit length
1045 $magnitude = sqrt(array_sum(array_map(function($x) { return $x * $x; }, $vector)));
1046 if ($magnitude > 0) {
1047 $vector = array_map(function($x) use ($magnitude) { return $x / $magnitude; }, $vector);
1048 }
1049
1050 $vectors[] = $vector;
1051 }
1052
1053 return $vectors;
1054 }
1055
1056
1057 /**
1058 * Scan Pinecone for processed content
1059 * UPDATED 2.6.2: Uses direct ID lookup via fetch API instead of random vector scanning
1060 * This removes the 10K record limit and scales to any database size
1061 *
1062 * @param array $pinecone_options Pinecone configuration options
1063 * @param array $post_ids Optional array of specific post IDs to check (if empty, checks all published posts)
1064 * @return array Processed data keyed by post ID
1065 */
1066 public function mxchat_scan_pinecone_for_processed_content($pinecone_options, $post_ids = array()) {
1067 $api_key = $pinecone_options['mxchat_pinecone_api_key'] ?? '';
1068 $host = $pinecone_options['mxchat_pinecone_host'] ?? '';
1069
1070 if (empty($api_key) || empty($host)) {
1071 return array();
1072 }
1073
1074 try {
1075 // If no specific post IDs provided, get all published posts
1076 if (empty($post_ids)) {
1077 $posts = get_posts(array(
1078 'post_type' => 'any',
1079 'post_status' => 'publish',
1080 'posts_per_page' => -1,
1081 'fields' => 'ids',
1082 'no_found_rows' => true,
1083 'update_post_meta_cache' => false,
1084 'update_post_term_cache' => false,
1085 ));
1086 $post_ids = $posts;
1087 }
1088
1089 if (empty($post_ids)) {
1090 return array();
1091 }
1092
1093 // Build a map of vector_id => post data for lookup
1094 $vector_id_map = array();
1095 foreach ($post_ids as $post_id) {
1096 $permalink = get_permalink($post_id);
1097 if ($permalink) {
1098 $vector_id = md5($permalink);
1099 $vector_id_map[$vector_id] = array(
1100 'post_id' => $post_id,
1101 'url' => $permalink
1102 );
1103 }
1104 }
1105
1106 if (empty($vector_id_map)) {
1107 return array();
1108 }
1109
1110 // Batch check Pinecone using fetch API (max 1000 IDs per request)
1111 $all_vector_ids = array_keys($vector_id_map);
1112 $chunks = array_chunk($all_vector_ids, 1000);
1113 $processed_data = array();
1114
1115 foreach ($chunks as $chunk) {
1116 $fetch_url = "https://{$host}/vectors/fetch";
1117
1118 $response = wp_remote_post($fetch_url, array(
1119 'headers' => array(
1120 'Api-Key' => $api_key,
1121 'Content-Type' => 'application/json'
1122 ),
1123 'body' => json_encode(array('ids' => $chunk)),
1124 'timeout' => 30
1125 ));
1126
1127 if (is_wp_error($response)) {
1128 continue;
1129 }
1130
1131 $response_code = wp_remote_retrieve_response_code($response);
1132 if ($response_code !== 200) {
1133 continue;
1134 }
1135
1136 $body = wp_remote_retrieve_body($response);
1137 $data = json_decode($body, true);
1138
1139 // Process returned vectors
1140 if (isset($data['vectors']) && is_array($data['vectors'])) {
1141 foreach ($data['vectors'] as $vector_id => $vector_data) {
1142 if (isset($vector_id_map[$vector_id])) {
1143 $post_info = $vector_id_map[$vector_id];
1144 $post_id = $post_info['post_id'];
1145 $metadata = $vector_data['metadata'] ?? array();
1146
1147 $created_at = $metadata['created_at'] ?? '';
1148 $processed_date = 'Recently';
1149 $timestamp = current_time('timestamp');
1150
1151 if (!empty($created_at)) {
1152 $ts = is_numeric($created_at) ? $created_at : strtotime($created_at);
1153 if ($ts) {
1154 $timestamp = $ts;
1155 $processed_date = human_time_diff($ts, current_time('timestamp')) . ' ago';
1156 }
1157 }
1158
1159 $processed_data[$post_id] = array(
1160 'db_id' => $vector_id,
1161 'processed_date' => $processed_date,
1162 'url' => $post_info['url'],
1163 'source' => 'pinecone',
1164 'timestamp' => $timestamp
1165 );
1166 }
1167 }
1168 }
1169 }
1170
1171 return $processed_data;
1172
1173 } catch (Exception $e) {
1174 return array();
1175 }
1176 }
1177
1178 /**
1179 * Get total count from Pinecone stats API
1180 * UPDATED: Removed cache fallback reference
1181 */
1182 private function mxchat_get_pinecone_total_count($pinecone_options, $bot_id = 'default') {
1183 $api_key = $pinecone_options['mxchat_pinecone_api_key'] ?? '';
1184 $host = $pinecone_options['mxchat_pinecone_host'] ?? '';
1185 $namespace = $pinecone_options['mxchat_pinecone_namespace'] ?? '';
1186
1187 if (empty($api_key) || empty($host)) {
1188 return 0;
1189 }
1190
1191 try {
1192 $stats_url = "https://{$host}/describe_index_stats";
1193
1194 // describe_index_stats doesn't need a body, just the POST request
1195 $response = wp_remote_post($stats_url, array(
1196 'headers' => array(
1197 'Api-Key' => $api_key,
1198 'Content-Type' => 'application/json'
1199 ),
1200 'body' => '{}',
1201 'timeout' => 15
1202 ));
1203
1204 if (!is_wp_error($response) && wp_remote_retrieve_response_code($response) === 200) {
1205 $body = wp_remote_retrieve_body($response);
1206 $stats_data = json_decode($body, true);
1207
1208 // If namespace is specified, get count from that specific namespace
1209 // Pinecone stats response format: { namespaces: { "ns": { vectorCount: N } }, totalVectorCount: N }
1210 if (!empty($namespace) && isset($stats_data['namespaces'][$namespace]['vectorCount'])) {
1211 $namespace_count = intval($stats_data['namespaces'][$namespace]['vectorCount']);
1212 //error_log('DEBUG: Got namespace-specific count: ' . $namespace_count . ' for namespace: ' . $namespace);
1213 return $namespace_count;
1214 }
1215
1216 // If no namespace specified or namespace not found in response, use total
1217 $total_count = $stats_data['totalVectorCount'] ?? 0;
1218 if ($total_count > 0) {
1219 //error_log('DEBUG: Got total count from stats API: ' . $total_count);
1220 return intval($total_count);
1221 }
1222 }
1223
1224 // If stats API fails, return 0 instead of using cache
1225 return 0;
1226
1227 } catch (Exception $e) {
1228 //error_log('DEBUG: Exception getting total count: ' . $e->getMessage());
1229 return 0;
1230 }
1231 }
1232
1233 /**
1234 * Get bot-specific Pinecone configuration for database operations
1235 */
1236 public function mxchat_get_bot_pinecone_options($bot_id = 'default') {
1237 //error_log('DEBUG: Getting Pinecone options for bot: ' . $bot_id);
1238
1239 // If default bot or multi-bot add-on not active, use default Pinecone config
1240 if ($bot_id === 'default' || !class_exists('MxChat_Multi_Bot_Manager')) {
1241 $addon_options = get_option('mxchat_pinecone_addon_options', array());
1242 //error_log('DEBUG: Using default Pinecone options');
1243 return $addon_options;
1244 }
1245
1246 // Get bot-specific configuration using the filter
1247 $bot_config = apply_filters('mxchat_get_bot_pinecone_config', array(), $bot_id);
1248
1249 //error_log('DEBUG: Bot config from filter: ' . print_r($bot_config, true));
1250
1251 // Check if we got valid bot-specific config
1252 if (!empty($bot_config) && isset($bot_config['use_pinecone']) && $bot_config['use_pinecone']) {
1253 // Convert bot config to the format expected by fetch functions
1254 $pinecone_options = array(
1255 'mxchat_use_pinecone' => '1',
1256 'mxchat_pinecone_api_key' => $bot_config['api_key'] ?? '',
1257 'mxchat_pinecone_host' => $bot_config['host'] ?? '',
1258 'mxchat_pinecone_namespace' => $bot_config['namespace'] ?? '',
1259 'mxchat_pinecone_environment' => '',
1260 'mxchat_pinecone_index' => ''
1261 );
1262
1263 //error_log('DEBUG: Returning bot-specific Pinecone options for bot: ' . $bot_id);
1264 return $pinecone_options;
1265 }
1266
1267 // Fallback to default options if bot-specific config is invalid
1268 //error_log('DEBUG: Bot-specific config invalid, falling back to default');
1269 return get_option('mxchat_pinecone_addon_options', array());
1270 }
1271
1272 /**
1273 * Get bot-specific Pinecone configuration
1274 * Used in the knowledge retrieval functions
1275 */
1276 private function get_bot_pinecone_config($bot_id = 'default') {
1277 //error_log("MXCHAT DEBUG: get_bot_pinecone_config called for bot: " . $bot_id);
1278
1279 // If default bot or multi-bot add-on not active, use default Pinecone config
1280 if ($bot_id === 'default' || !class_exists('MxChat_Multi_Bot_Manager')) {
1281 //error_log("MXCHAT DEBUG: Using default Pinecone config (no multi-bot or bot is 'default')");
1282 $addon_options = get_option('mxchat_pinecone_addon_options', array());
1283 $config = array(
1284 'use_pinecone' => (isset($addon_options['mxchat_use_pinecone']) && $addon_options['mxchat_use_pinecone'] === '1'),
1285 'api_key' => $addon_options['mxchat_pinecone_api_key'] ?? '',
1286 'host' => $addon_options['mxchat_pinecone_host'] ?? '',
1287 'namespace' => $addon_options['mxchat_pinecone_namespace'] ?? ''
1288 );
1289 //error_log("MXCHAT DEBUG: Default config - use_pinecone: " . ($config['use_pinecone'] ? 'true' : 'false'));
1290 return $config;
1291 }
1292
1293 //error_log("MXCHAT DEBUG: Calling filter 'mxchat_get_bot_pinecone_config' for bot: " . $bot_id);
1294
1295 // Hook for multi-bot add-on to provide bot-specific Pinecone config
1296 $bot_pinecone_config = apply_filters('mxchat_get_bot_pinecone_config', array(), $bot_id);
1297
1298 if (!empty($bot_pinecone_config)) {
1299 //error_log("MXCHAT DEBUG: Got bot-specific config from filter");
1300 //error_log(" - use_pinecone: " . (isset($bot_pinecone_config['use_pinecone']) ? ($bot_pinecone_config['use_pinecone'] ? 'true' : 'false') : 'not set'));
1301 //error_log(" - host: " . ($bot_pinecone_config['host'] ?? 'not set'));
1302 //error_log(" - namespace: " . ($bot_pinecone_config['namespace'] ?? 'not set'));
1303 } else {
1304 //error_log("MXCHAT DEBUG: Filter returned empty config!");
1305 }
1306
1307 return is_array($bot_pinecone_config) ? $bot_pinecone_config : array();
1308 }
1309
1310
1311 /**
1312 * Fetches vectors from Pinecone using provided IDs (for content selection feature)
1313 */
1314 public function fetch_pinecone_vectors_by_ids($pinecone_options, $vector_ids) {
1315 $api_key = $pinecone_options['mxchat_pinecone_api_key'] ?? '';
1316 $host = $pinecone_options['mxchat_pinecone_host'] ?? '';
1317
1318 if (empty($api_key) || empty($host) || empty($vector_ids)) {
1319 return array();
1320 }
1321
1322 try {
1323 $fetch_url = "https://{$host}/vectors/fetch";
1324
1325 // Pinecone fetch API allows fetching specific vectors by ID
1326 $fetch_data = array(
1327 'ids' => array_values($vector_ids)
1328 );
1329
1330 $response = wp_remote_post($fetch_url, array(
1331 'headers' => array(
1332 'Api-Key' => $api_key,
1333 'Content-Type' => 'application/json'
1334 ),
1335 'body' => json_encode($fetch_data),
1336 'timeout' => 30
1337 ));
1338
1339 if (is_wp_error($response)) {
1340 return array();
1341 }
1342
1343 $response_code = wp_remote_retrieve_response_code($response);
1344
1345 if ($response_code !== 200) {
1346 return array();
1347 }
1348
1349 $body = wp_remote_retrieve_body($response);
1350 $data = json_decode($body, true);
1351
1352 if (!isset($data['vectors'])) {
1353 return array();
1354 }
1355
1356 $processed_data = array();
1357
1358 foreach ($data['vectors'] as $vector_id => $vector_data) {
1359 $metadata = $vector_data['metadata'] ?? array();
1360 $source_url = $metadata['source_url'] ?? '';
1361
1362 if (!empty($source_url)) {
1363 $post_id = url_to_postid($source_url);
1364 if ($post_id) {
1365 $created_at = $metadata['created_at'] ?? '';
1366 $processed_date = 'Recently'; // Default
1367
1368 if (!empty($created_at)) {
1369 $timestamp = is_numeric($created_at) ? $created_at : strtotime($created_at);
1370 if ($timestamp) {
1371 $processed_date = human_time_diff($timestamp, current_time('timestamp')) . ' ago';
1372 }
1373 }
1374
1375 $processed_data[$post_id] = array(
1376 'db_id' => $vector_id,
1377 'processed_date' => $processed_date,
1378 'url' => $source_url,
1379 'source' => 'pinecone',
1380 'timestamp' => $timestamp ?? current_time('timestamp')
1381 );
1382 }
1383 }
1384 }
1385
1386 return $processed_data;
1387
1388 } catch (Exception $e) {
1389 return array();
1390 }
1391 }
1392 // ========================================
1393 // PINECONE DELETE OPERATIONS
1394 // ========================================
1395
1396 /**
1397 * Delete all vectors from Pinecone
1398 * Loops until all vectors are deleted (handles large databases)
1399 */
1400 public function mxchat_delete_all_from_pinecone($pinecone_options) {
1401 $api_key = $pinecone_options['mxchat_pinecone_api_key'] ?? '';
1402 $host = $pinecone_options['mxchat_pinecone_host'] ?? '';
1403
1404 if (empty($api_key) || empty($host)) {
1405 return array(
1406 'success' => false,
1407 'message' => 'Missing Pinecone API credentials'
1408 );
1409 }
1410
1411 try {
1412 $total_deleted = 0;
1413 $failed_batches = 0;
1414 $max_iterations = 100; // Safety limit to prevent infinite loops
1415 $iteration = 0;
1416
1417 // Loop until no more vectors are found
1418 do {
1419 $iteration++;
1420
1421 // Get a batch of vector IDs from Pinecone
1422 $records = $this->mxchat_get_recent_1k_entries($pinecone_options);
1423 $vector_ids = array();
1424
1425 foreach ($records as $record) {
1426 if (!empty($record->id)) {
1427 $vector_ids[] = $record->id;
1428 }
1429 }
1430
1431 // If no vectors found, we're done
1432 if (empty($vector_ids)) {
1433 break;
1434 }
1435
1436 // Delete vectors in batches (Pinecone has limits on batch operations)
1437 $batch_size = 100;
1438 $batches = array_chunk($vector_ids, $batch_size);
1439
1440 foreach ($batches as $batch) {
1441 $result = $this->mxchat_delete_pinecone_batch($batch, $api_key, $host);
1442 if ($result['success']) {
1443 $total_deleted += count($batch);
1444 } else {
1445 $failed_batches++;
1446 }
1447 }
1448
1449 // Small delay to avoid rate limiting
1450 usleep(100000); // 100ms
1451
1452 } while ($iteration < $max_iterations);
1453
1454 if ($total_deleted === 0) {
1455 return array(
1456 'success' => true,
1457 'message' => 'No vectors found to delete'
1458 );
1459 }
1460
1461 if ($failed_batches > 0) {
1462 return array(
1463 'success' => false,
1464 'message' => sprintf('Deleted %d vectors, but %d batches failed', $total_deleted, $failed_batches)
1465 );
1466 }
1467
1468 return array(
1469 'success' => true,
1470 'message' => "Successfully deleted {$total_deleted} vectors from Pinecone"
1471 );
1472
1473 } catch (Exception $e) {
1474 return array(
1475 'success' => false,
1476 'message' => $e->getMessage()
1477 );
1478 }
1479 }
1480
1481 /**
1482 * Deletes batch of vectors from Pinecone database
1483 */
1484 private function mxchat_delete_pinecone_batch($vector_ids, $api_key, $host) {
1485 // Build the API endpoint
1486 $api_endpoint = "https://{$host}/vectors/delete";
1487
1488 // Prepare the request body with the IDs
1489 $request_body = array(
1490 'ids' => $vector_ids
1491 );
1492
1493 // Make the deletion request
1494 $response = wp_remote_post($api_endpoint, array(
1495 'headers' => array(
1496 'Api-Key' => $api_key,
1497 'accept' => 'application/json',
1498 'content-type' => 'application/json'
1499 ),
1500 'body' => wp_json_encode($request_body),
1501 'timeout' => 60, // Increased timeout for batch operations
1502 'method' => 'POST'
1503 ));
1504
1505 // Handle WordPress HTTP API errors
1506 if (is_wp_error($response)) {
1507 MxChat_Admin::mxchat_log_debug('pinecone_error', 'Pinecone batch deletion failed: ' . $response->get_error_message());
1508 return array(
1509 'success' => false,
1510 'message' => $response->get_error_message()
1511 );
1512 }
1513
1514 // Check response status
1515 $response_code = wp_remote_retrieve_response_code($response);
1516 $response_body = wp_remote_retrieve_body($response);
1517
1518 // Pinecone returns 200 for successful deletion
1519 if ($response_code !== 200) {
1520 MxChat_Admin::mxchat_log_debug('pinecone_error', 'Pinecone batch deletion failed (HTTP ' . $response_code . ')', array('response' => substr($response_body, 0, 200)));
1521 return array(
1522 'success' => false,
1523 'message' => sprintf(
1524 'Pinecone API error (HTTP %d): %s',
1525 $response_code,
1526 $response_body
1527 )
1528 );
1529 }
1530
1531 return array(
1532 'success' => true,
1533 'message' => 'Batch deleted successfully from Pinecone'
1534 );
1535 }
1536
1537
1538 /**
1539 * Deletes vector from Pinecone using API request
1540 */
1541 public function mxchat_delete_from_pinecone_by_vector_id($vector_id, $api_key, $host, $namespace = '') {
1542 //error_log('=== PINECONE DELETE OPERATION ===');
1543 //error_log('Vector ID: ' . $vector_id);
1544 //error_log('Host: ' . $host);
1545 //error_log('API Key: ' . (empty($api_key) ? 'EMPTY' : 'SET'));
1546
1547 // First, let's verify the vector exists before trying to delete
1548 $fetch_url = "https://{$host}/vectors/fetch";
1549
1550 $fetch_params = array(
1551 'ids' => array($vector_id)
1552 );
1553
1554 // Add namespace if provided (though you said you're not using namespaces)
1555 if (!empty($namespace)) {
1556 $fetch_params['namespace'] = $namespace;
1557 }
1558
1559 // Construct URL with query parameters for GET request
1560 $fetch_url_with_params = $fetch_url . '?' . http_build_query($fetch_params);
1561
1562 $fetch_response = wp_remote_get($fetch_url_with_params, array(
1563 'headers' => array(
1564 'Api-Key' => $api_key,
1565 'accept' => 'application/json'
1566 ),
1567 'timeout' => 15
1568 ));
1569
1570 if (!is_wp_error($fetch_response) && wp_remote_retrieve_response_code($fetch_response) === 200) {
1571 $fetch_body = wp_remote_retrieve_body($fetch_response);
1572 $fetch_data = json_decode($fetch_body, true);
1573
1574 //error_log('DEBUG: Fetch response: ' . print_r($fetch_data, true));
1575
1576 if (isset($fetch_data['vectors']) && isset($fetch_data['vectors'][$vector_id])) {
1577 //error_log('DEBUG: Vector EXISTS in this index before deletion');
1578 } else {
1579 //error_log('WARNING: Vector NOT FOUND in this index! It may be in a different bot\'s index');
1580 // You might want to return an error here
1581 }
1582 } else {
1583 //error_log('DEBUG: Could not fetch vector to verify existence');
1584 }
1585
1586 // Now proceed with deletion
1587 $api_endpoint = "https://{$host}/vectors/delete";
1588
1589 // Prepare the request body with the ID
1590 $request_body = array(
1591 'ids' => array($vector_id)
1592 );
1593
1594 // Add namespace if provided
1595 if (!empty($namespace)) {
1596 $request_body['namespace'] = $namespace;
1597 }
1598
1599 //error_log('DEBUG: Delete request body: ' . json_encode($request_body));
1600 //error_log('DEBUG: Delete endpoint: ' . $api_endpoint);
1601
1602 // Make the deletion request
1603 $response = wp_remote_post($api_endpoint, array(
1604 'headers' => array(
1605 'Api-Key' => $api_key,
1606 'accept' => 'application/json',
1607 'content-type' => 'application/json'
1608 ),
1609 'body' => wp_json_encode($request_body),
1610 'timeout' => 30
1611 ));
1612
1613 // Handle WordPress HTTP API errors
1614 if (is_wp_error($response)) {
1615 //error_log('DEBUG: WP Error: ' . $response->get_error_message());
1616 return array(
1617 'success' => false,
1618 'message' => $response->get_error_message()
1619 );
1620 }
1621
1622 // Check response status
1623 $response_code = wp_remote_retrieve_response_code($response);
1624 $response_body = wp_remote_retrieve_body($response);
1625
1626 //error_log('DEBUG: Delete response code: ' . $response_code);
1627 //error_log('DEBUG: Delete response body: ' . $response_body);
1628
1629 // Pinecone returns 200 for successful deletion (even if vector didn't exist)
1630 if ($response_code !== 200) {
1631 //error_log('DEBUG: Non-200 response from Pinecone');
1632 return array(
1633 'success' => false,
1634 'message' => sprintf(
1635 'Pinecone API error (HTTP %d): %s',
1636 $response_code,
1637 $response_body
1638 )
1639 );
1640 }
1641
1642 // After deletion, verify it's actually gone
1643 sleep(1); // Give Pinecone a moment to process
1644
1645 $verify_response = wp_remote_get($fetch_url_with_params, array(
1646 'headers' => array(
1647 'Api-Key' => $api_key,
1648 'accept' => 'application/json'
1649 ),
1650 'timeout' => 15
1651 ));
1652
1653 if (!is_wp_error($verify_response) && wp_remote_retrieve_response_code($verify_response) === 200) {
1654 $verify_body = wp_remote_retrieve_body($verify_response);
1655 $verify_data = json_decode($verify_body, true);
1656
1657 if (isset($verify_data['vectors']) && isset($verify_data['vectors'][$vector_id])) {
1658 //error_log('ERROR: Vector STILL EXISTS after deletion attempt!');
1659 return array(
1660 'success' => false,
1661 'message' => 'Vector still exists after deletion attempt'
1662 );
1663 } else {
1664 //error_log('SUCCESS: Vector confirmed deleted (or never existed)');
1665 }
1666 }
1667
1668 //error_log('=== END PINECONE DELETE OPERATION ===');
1669
1670 return array(
1671 'success' => true,
1672 'message' => 'Vector deleted successfully from Pinecone'
1673 );
1674 }
1675
1676 /**
1677 * Deletes data from Pinecone using a source URL
1678 */
1679 public function mxchat_delete_from_pinecone_by_url($source_url, $pinecone_options) {
1680 $host = $pinecone_options['mxchat_pinecone_host'] ?? '';
1681 $api_key = $pinecone_options['mxchat_pinecone_api_key'] ?? '';
1682
1683 if (empty($host) || empty($api_key)) {
1684 //error_log('MXChat: Pinecone deletion failed - missing configuration');
1685 return false;
1686 }
1687
1688 $api_endpoint = "https://{$host}/vectors/delete";
1689 $vector_id = md5($source_url);
1690
1691 $request_body = array(
1692 'ids' => array($vector_id)
1693 );
1694
1695 $response = wp_remote_post($api_endpoint, array(
1696 'headers' => array(
1697 'Api-Key' => $api_key,
1698 'accept' => 'application/json',
1699 'content-type' => 'application/json'
1700 ),
1701 'body' => wp_json_encode($request_body),
1702 'timeout' => 30
1703 ));
1704
1705 if (is_wp_error($response)) {
1706 //error_log('MXChat: Pinecone deletion error - ' . $response->get_error_message());
1707 return false;
1708 }
1709
1710 $response_code = wp_remote_retrieve_response_code($response);
1711 if ($response_code !== 200) {
1712 //error_log('MXChat: Pinecone deletion failed with status ' . $response_code);
1713 return false;
1714 }
1715
1716 return true;
1717 }
1718
1719
1720 /**
1721 * Deletes data from Pinecone index using API key
1722 */
1723 private function mxchat_delete_from_pinecone($urls, $api_key, $environment, $index_name) {
1724 // Get the Pinecone host from options (matching your store_in_pinecone_main pattern)
1725 $options = get_option('mxchat_pinecone_addon_options');
1726 $host = $options['mxchat_pinecone_host'] ?? '';
1727
1728 if (empty($host)) {
1729 return array(
1730 'success' => false,
1731 'message' => 'Pinecone host is not configured. Please set the host in your settings.'
1732 );
1733 }
1734
1735 // Build API endpoint using the configured host
1736 $api_endpoint = "https://{$host}/vectors/delete";
1737
1738 // Create vector IDs from URLs (matching your store method's ID generation)
1739 $vector_ids = array_map('md5', $urls);
1740
1741 // Prepare the delete request body
1742 $request_body = array(
1743 'ids' => $vector_ids,
1744 'filter' => array(
1745 'source_url' => array(
1746 '$in' => $urls
1747 )
1748 )
1749 );
1750
1751 // Make the deletion request
1752 $response = wp_remote_post($api_endpoint, array(
1753 'headers' => array(
1754 'Api-Key' => $api_key,
1755 'accept' => 'application/json',
1756 'content-type' => 'application/json'
1757 ),
1758 'body' => wp_json_encode($request_body),
1759 'timeout' => 30,
1760 'data_format' => 'body'
1761 ));
1762
1763 // Handle WordPress HTTP API errors
1764 if (is_wp_error($response)) {
1765 return array(
1766 'success' => false,
1767 'message' => $response->get_error_message()
1768 );
1769 }
1770
1771 // Check response status
1772 $response_code = wp_remote_retrieve_response_code($response);
1773 if ($response_code !== 200) {
1774 $body = wp_remote_retrieve_body($response);
1775 return array(
1776 'success' => false,
1777 'message' => sprintf(
1778 'Pinecone API error (HTTP %d): %s',
1779 $response_code,
1780 $body
1781 )
1782 );
1783 }
1784
1785 // Parse response body
1786 $body = wp_remote_retrieve_body($response);
1787 $response_data = json_decode($body, true);
1788
1789 // Final validation of the response
1790 if (json_last_error() !== JSON_ERROR_NONE) {
1791 return array(
1792 'success' => false,
1793 'message' => 'Failed to parse Pinecone response: ' . json_last_error_msg()
1794 );
1795 }
1796
1797 return array(
1798 'success' => true,
1799 'message' => sprintf('Successfully deleted %d vectors from Pinecone', count($vector_ids))
1800 );
1801 }
1802
1803
1804
1805 /**
1806 * Retrieves processed content from Pinecone API
1807 *
1808 * @param array $pinecone_options Pinecone configuration options
1809 * @param array $post_ids Optional array of specific post IDs to check (if empty, checks all)
1810 * @return array Processed data keyed by post ID
1811 */
1812 public function mxchat_get_pinecone_processed_content($pinecone_options, $post_ids = array()) {
1813 $api_key = $pinecone_options['mxchat_pinecone_api_key'] ?? '';
1814 $host = $pinecone_options['mxchat_pinecone_host'] ?? '';
1815
1816 if (empty($api_key) || empty($host)) {
1817 return array();
1818 }
1819
1820 $pinecone_data = array();
1821
1822 try {
1823 // Always get fresh data from Pinecone
1824 $pinecone_data = $this->mxchat_scan_pinecone_for_processed_content($pinecone_options, $post_ids);
1825
1826 // Method 2: Final fallback - try stats endpoint (if available)
1827 if (empty($pinecone_data)) {
1828 $stats_url = "https://{$host}/describe_index_stats";
1829
1830 $response = wp_remote_post($stats_url, array(
1831 'headers' => array(
1832 'Api-Key' => $api_key,
1833 'Content-Type' => 'application/json'
1834 ),
1835 'body' => json_encode(array()),
1836 'timeout' => 30
1837 ));
1838
1839 if (!is_wp_error($response) && wp_remote_retrieve_response_code($response) === 200) {
1840 $body = wp_remote_retrieve_body($response);
1841 $stats_data = json_decode($body, true);
1842 }
1843 }
1844
1845 } catch (Exception $e) {
1846 // Log error but don't return cached data
1847 }
1848
1849 return $pinecone_data;
1850 }
1851 // ========================================
1852 // HELPER METHODS
1853 // ========================================
1854
1855 /**
1856 * Validates Pinecone API credentials
1857 */
1858 private function mxchat_validate_pinecone_credentials($api_key, $host) {
1859 if (empty($api_key) || empty($host)) {
1860 return false;
1861 }
1862 return true;
1863 }
1864
1865 /**
1866 * Get Pinecone API credentials from options
1867 */
1868 private function mxchat_get_pinecone_credentials() {
1869 $options = get_option('mxchat_options', array());
1870 return array(
1871 'api_key' => isset($options['pinecone_api_key']) ? $options['pinecone_api_key'] : '',
1872 'host' => isset($options['pinecone_host']) ? $options['pinecone_host'] : ''
1873 );
1874 }
1875
1876 /**
1877 * Log Pinecone operation errors
1878 */
1879 private function log_pinecone_error($operation, $error_message) {
1880 //error_log("MxChat Pinecone {$operation} Error: " . $error_message);
1881 }
1882
1883 // ========================================
1884 // STATIC ACCESS METHODS (for backward compatibility)
1885 // ========================================
1886
1887 /**
1888 * Get singleton instance
1889 */
1890 public static function get_instance() {
1891 static $instance = null;
1892 if ($instance === null) {
1893 $instance = new self();
1894 }
1895 return $instance;
1896 }
1897 }
1898
1899 // Initialize the Pinecone manager
1900 $mxchat_pinecone_manager = MxChat_Pinecone_Manager::get_instance();
1901