← All changes | includes/class-mxchat-utils.php +104 -42 2.0.6 → 2.1.0 View file →

		@@ -4,70 +4,132 @@
4	4	}
5	5
6	6	class MxChat_Utils {
7	7
8		- /**
9		- * Submit or update content (and its embedding) in the database.
10		- *
11		- * If the source_url already exists, update that row.
12		- * Otherwise, insert a new row.
13		- *
14		- * @param string $content The content to be embedded.
15		- * @param string $source_url The source URL of the content.
16		- * @param string $api_key The API key used for generating embeddings.
17		- */
18		- public static function submit_content_to_db($content, $source_url, $api_key) {
19		- global $wpdb;
20		- $table_name = $wpdb->prefix . 'mxchat_system_prompt_content';
21		-
22		- // Sanitize the source URL
23		- $source_url = esc_url_raw($source_url);
24		-
25		- // Generate the embedding using the API key
26		- $embedding_vector = self::generate_embedding($content, $api_key);
27		-
28		- if (is_array($embedding_vector)) {
29		- $embedding_vector_serialized = maybe_serialize($embedding_vector);
30		-
31		- // Check if a row already exists for this URL
32		- $existing_id = $wpdb->get_var(
33		- $wpdb->prepare(
34		- "SELECT id FROM {$table_name} WHERE source_url = %s LIMIT 1",
35		- $source_url
36		- )
37		- );
38		-
	8	+/**
	9	+ * Submit or update content (and its embedding) in the database.
	10	+ *
	11	+ * If the source_url already exists, update that row.
	12	+ * Otherwise, insert a new row.
	13	+ *
	14	+ * @param string $content The content to be embedded.
	15	+ * @param string $source_url The source URL of the content.
	16	+ * @param string $api_key The API key used for generating embeddings.
	17	+ * @return bool|string True on success, error message on failure
	18	+ */
	19	+public static function submit_content_to_db($content, $source_url, $api_key) {
	20	+ global $wpdb;
	21	+ $table_name = $wpdb->prefix . 'mxchat_system_prompt_content';
	22	+
	23	+ error_log('[MXCHAT-DB] Starting database submission for URL: ' . $source_url);
	24	+ error_log('[MXCHAT-DB] Content length: ' . strlen($content) . ' bytes');
	25	+
	26	+ // Sanitize the source URL
	27	+ $source_url = esc_url_raw($source_url);
	28	+
	29	+ // Use wpdb's prepare to ensure content is properly escaped for database
	30	+ $prepared_content = $wpdb->prepare('%s', $content);
	31	+ // Remove the quotes that wpdb->prepare adds
	32	+ $safe_content = substr($prepared_content, 1, -1);
	33	+
	34	+ // Additional content safety measures
	35	+ $safe_content = wp_check_invalid_utf8($safe_content);
	36	+ $safe_content = preg_replace('/[\x00-\x08\x0B\x0C\x0E-\x1F\x7F]/u', '', $safe_content);
	37	+
	38	+ // Generate the embedding using the API key
	39	+ $embedding_vector = self::generate_embedding($content, $api_key);
	40	+
	41	+ if (!is_array($embedding_vector)) {
	42	+ error_log('[MXCHAT-DB] Error: Embedding generation failed');
	43	+ return false;
	44	+ }
	45	+
	46	+ error_log('[MXCHAT-DB] Embedding generated successfully');
	47	+
	48	+ $embedding_vector_serialized = maybe_serialize($embedding_vector);
	49	+ error_log('[MXCHAT-DB] Serialized embedding length: ' . strlen($embedding_vector_serialized) . ' bytes');
	50	+
	51	+ // Check if a row already exists for this URL
	52	+ $existing_id = $wpdb->get_var(
	53	+ $wpdb->prepare(
	54	+ "SELECT id FROM {$table_name} WHERE source_url = %s LIMIT 1",
	55	+ $source_url
	56	+ )
	57	+ );
	58	+
	59	+ // Progressive fallback mechanism for problematic content
	60	+ $attempt = 1;
	61	+ $max_attempts = 3;
	62	+ $current_content = $safe_content;
	63	+ $result = false;
	64	+
	65	+ while ($attempt <= $max_attempts && $result === false) {
	66	+ try {
39	67	if ($existing_id) {
	68	+ error_log('[MXCHAT-DB] Found existing entry (ID: ' . $existing_id . '). Updating... (Attempt ' . $attempt . ')');
	69	+
40	70	// Update the existing row
41		- $wpdb->update(
	71	+ $result = $wpdb->update(
42	72	$table_name,
43	73	array(
44		- 'article_content' => $content,
	74	+ 'url' => $source_url,
	75	+ 'article_content' => $current_content,
45	76	'embedding_vector' => $embedding_vector_serialized,
46		- 'timestamp' => current_time('mysql'), // Remove if your table doesn't have a timestamp column
	77	+ 'source_url' => $source_url,
	78	+ 'timestamp' => current_time('mysql'),
47	79	),
48	80	array('id' => $existing_id),
49		- array('%s','%s','%s'),
	81	+ array('%s','%s','%s','%s','%s'),
50	82	array('%d')
51	83	);
52	84	} else {
	85	+ error_log('[MXCHAT-DB] No existing entry found. Inserting new row... (Attempt ' . $attempt . ')');
	86	+ error_log('[MXCHAT-DB] Content sample: ' . substr($current_content, 0, 1000));
	87	+
53	88	// Insert a new row
54		- $wpdb->insert(
	89	+ $result = $wpdb->insert(
55	90	$table_name,
56	91	array(
57		- 'article_content' => $content,
	92	+ 'url' => $source_url,
	93	+ 'article_content' => $current_content,
58	94	'embedding_vector' => $embedding_vector_serialized,
59	95	'source_url' => $source_url,
60		- 'timestamp' => current_time('mysql'), // Remove if your table doesn't have a timestamp column
	96	+ 'timestamp' => current_time('mysql'),
61	97	),
62		- array('%s','%s','%s','%s')
	98	+ array('%s','%s','%s','%s','%s')
63	99	);
64	100	}
65		- } else {
66		- // If embedding generation failed, you could log or handle it here
67		- // error_log('Embedding generation failed for content from ' . $source_url);
	101	+
	102	+ if ($result === false) {
	103	+ error_log('[MXCHAT-DB] Database operation failed (Attempt ' . $attempt . '): ' . $wpdb->last_error);
	104	+
	105	+ // Progressively apply more aggressive sanitization on failure
	106	+ if ($attempt === 1) {
	107	+ // First fallback: Use a more aggressive character filter and shorten
	108	+ $current_content = preg_replace('/[^\p{L}\p{N}\s.,;:!?()-]/u', '', $current_content);
	109	+ $current_content = substr($current_content, 0, 50000);
	110	+ } else if ($attempt === 2) {
	111	+ // Second fallback: Keep only alphanumeric and basic punctuation, shorten further
	112	+ $current_content = preg_replace('/[^a-zA-Z0-9\s.,;:!?()-]/u', '', $current_content);
	113	+ $current_content = substr($current_content, 0, 30000);
	114	+ }
	115	+
	116	+ $attempt++;
	117	+ }
	118	+ } catch (Exception $e) {
	119	+ error_log('[MXCHAT-DB] Exception during database operation: ' . $e->getMessage());
	120	+ $attempt++;
68	121	}
69	122	}
	123	+
	124	+ if ($result === false) {
	125	+ error_log('[MXCHAT-DB] All database operation attempts failed');
	126	+ return false;
	127	+ }
	128	+
	129	+ error_log('[MXCHAT-DB] Database operation completed successfully (Attempt ' . ($attempt - 1) . ')');
	130	+ return true;
	131	+}
70	132
71	133	/**
72	134	* Generate an embedding for the given text using the specified API key.
73	135	*