chatbot / includes / class-wpwbot-search.php

class-wpwbot-search.php in WPBot – AI ChatBot for Live Support, Lead Generation, WordPress Automation, AI Services 8.6.0, at includes/class-wpwbot-search.php

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1	<?php
2	if ( ! defined( 'ABSPATH' ) ) {
3	exit;
4	}
5	if ( ! class_exists( 'wpwBot_Search' ) ) :
6	/**
7	* Class for plugin search
8	*/
9	class wpwBot_Search {
10	/**
11	* @var AWS_Search Array of all plugin data $data
12	*/
13	private $data = array();
14	/**
15	* Return a singleton instance of the current class
16	*
17	* @return object
18	*/
19	public static function factory() {
20	static $instance = false;
21	if ( ! $instance ) {
22	$instance = new self();
23	}
24	return $instance;
25	}
26	/**
27	* Constructor
28	*/
29	public function __construct() {}
30	/*
31	* Search
32	*/
33	public function search( $keyword = '' ) {
34	global $wpdb;
35	$special_chars = $this->get_special_chars();
36	$s = $keyword ? esc_attr( $keyword ) : esc_attr(wp_unslash($_POST['keyword']));
37	$s = stripslashes( $s );
38	$s = str_replace( array( "\r", "\n" ), '', $s );
39	$s = str_replace( $special_chars, '', $s );
40	$show_cats = 'true';
41	$show_tags = 'true';
42	$search_in = 'true';
43	$outofstock = 'true';
44	$search_in_arr = explode( ',', 'title,content,category,excerpt,tag,sku');
45	// Search in title if all options is disabled
46	if ( ! $search_in ) {
47	$search_in_arr = array( 'title' );
48	}
49	$categories_array = array();
50	$tags_array = array();
51	$this->data['s'] = $s;
52	$this->data['results_num'] = 50;//This static before setting option on wpwbot admin panel.
53	$this->data['search_terms'] = array();
54	$this->data['search_terms'] = array_unique( explode( ' ', $s ) );
55	$this->data['search_in'] = $search_in_arr;
56	$this->data['outofstock'] = $outofstock;
57	$posts_ids = $this->query_index_table();
58	$products_array = $this->get_products( $posts_ids );
59	return $products_array;
60	}
61	/*
62	* Get special characters that must be striped
63	*/
64	public function get_special_chars() {
65	$chars = array(
66	'-',
67	'_',
68	'\|',
69	'+',
70	'`',
71	'~',
72	'!',
73	'@',
74	'#',
75	'$',
76	'%',
77	'^',
78	'&',
79	'*',
80	'(',
81	')',
82	'\\',
83	'?',
84	';',
85	':',
86	"'",
87	'"',
88	".",
89	",",
90	"<",
91	">",
92	"{",
93	"}",
94	"/",
95	"[",
96	"]",
97	);
98	return apply_filters( 'aws_special_chars', $chars );
99	}
100	/*
101	* Query in index table
102	*/
103	private function query_index_table() {
104	global $wpdb;
105	$table_name = $wpdb->prefix . QCLD_wpCHATBOT_INDEX_TABLE;
106	$search_in_arr = $this->data['search_in'];
107	$results_num = $this->data['results_num'];
108	$outofstock = $this->data['outofstock'];
109	$reindex_version = get_option( 'aws_reindex_version' );
110	$query = array();
111	$query['search'] = '';
112	$query['source'] = '';
113	$query['relevance'] = '';
114	$query['stock'] = '';
115	$query['visibility'] = '';
116	$query['lang'] = '';
117	$search_array = array();
118	$source_array = array();
119	$relevance_array = array();
120	$new_relevance_array = array();
121	foreach ( $this->data['search_terms'] as $search_term ) {
122	$search_term_len = strlen( $search_term );
123	$relevance_title = 200 + 20 * $search_term_len;
124	$relevance_content = 35 + 4 * $search_term_len;
125	$relevance_title_like = 40 + 2 * $search_term_len;
126	$relevance_content_like = 35 + 1 * $search_term_len;
127	$search_term_like = preg_replace( '/(s\|es\|ies)$/i', '', $search_term );
128	$like = '%' . $wpdb->esc_like( $search_term_like ) . '%';
129	if ( $search_term_len > 1 ) {
130	$search_array[] = $wpdb->prepare( '( term LIKE %s )', $like );
131	} else {
132	$search_array[] = $wpdb->prepare( '( term = "%s" )', $search_term );
133	}
134	foreach ( $search_in_arr as $search_in_term ) {
135	switch ( $search_in_term ) {
136	case 'title':
137	$relevance_array['title'][] = $wpdb->prepare( "( case when ( term_source = 'title' AND term = '%s' ) then {$relevance_title} * count else 0 end )", $search_term );
138	$relevance_array['title'][] = $wpdb->prepare( "( case when ( term_source = 'title' AND term LIKE %s ) then {$relevance_title_like} * count else 0 end )", $like );
139	break;
140	case 'content':
141	$relevance_array['content'][] = $wpdb->prepare( "( case when ( term_source = 'content' AND term = '%s' ) then {$relevance_content} * count else 0 end )", $search_term );
142	$relevance_array['content'][] = $wpdb->prepare( "( case when ( term_source = 'content' AND term LIKE %s ) then {$relevance_content_like} * count else 0 end )", $like );
143	break;
144	case 'excerpt':
145	$relevance_array['content'][] = $wpdb->prepare( "( case when ( term_source = 'excerpt' AND term = '%s' ) then {$relevance_content} * count else 0 end )", $search_term );
146	$relevance_array['content'][] = $wpdb->prepare( "( case when ( term_source = 'excerpt' AND term LIKE %s ) then {$relevance_content_like} * count else 0 end )", $like );
147	break;
148	case 'category':
149	$relevance_array['category'][] = $wpdb->prepare( "( case when ( term_source = 'category' AND term = '%s' ) then 35 else 0 end )", $search_term );
150	$relevance_array['category'][] = $wpdb->prepare( "( case when ( term_source = 'category' AND term LIKE %s ) then 5 else 0 end )", $like );
151	break;
152	case 'tag':
153	$relevance_array['tag'][] = $wpdb->prepare( "( case when ( term_source = 'tag' AND term = '%s' ) then 35 else 0 end )", $search_term );
154	$relevance_array['tag'][] = $wpdb->prepare( "( case when ( term_source = 'tag' AND term LIKE %s ) then 5 else 0 end )", $like );
155	break;
156	case 'sku':
157	$relevance_array['sku'][] = $wpdb->prepare( "( case when ( term_source = 'sku' AND term = '%s' ) then 300 else 0 end )", $search_term );
158	$relevance_array['sku'][] = $wpdb->prepare( "( case when ( term_source = 'sku' AND term LIKE %s ) then 50 else 0 end )", $like );
159	break;
160	}
161	}
162	}
163	// Sort 'relevance' queries in the array by search priority
164	foreach ( $search_in_arr as $search_in_item ) {
165	if ( isset( $relevance_array[$search_in_item] ) ) {
166	$new_relevance_array[$search_in_item] = implode( ' + ', $relevance_array[$search_in_item] );
167	}
168	}
169	foreach ( $search_in_arr as $search_in_term ) {
170	$source_array[] = "term_source = '{$search_in_term}'";
171	}
172	$query['relevance'] .= sprintf( ' (SUM( %s )) ', implode( ' + ', $new_relevance_array ) );
173	$query['search'] .= sprintf( ' AND ( %s )', implode( ' OR ', $search_array ) );
174	$query['source'] .= sprintf( ' AND ( %s )', implode( ' OR ', $source_array ) );
175	if ( $reindex_version && version_compare( $reindex_version, '1.16', '>=' ) ) {
176	if ( $outofstock !== 'true' ) {
177	$query['stock'] .= " AND in_stock = 1";
178	}
179	$query['visibility'] .= " AND NOT visibility LIKE '%hidden%'";
180	}
181	if ( ( defined( 'ICL_SITEPRESS_VERSION' ) \|\| function_exists( 'pll_current_language' ) ) && $reindex_version && version_compare( $reindex_version, '1.20', '>=' ) ) {
182	$current_lang = false;
183	if ( has_filter('wpml_current_language') ) {
184	$current_lang = apply_filters( 'wpml_current_language', NULL );
185	} elseif ( function_exists( 'pll_current_language' ) ) {
186	$current_lang = pll_current_language();
187	}
188	if ( $current_lang ) {
189	$query['lang'] .= $wpdb->prepare( " AND ( lang LIKE %s OR lang = '' )", $current_lang );
190	}
191	} elseif( function_exists( 'qtranxf_getLanguage' ) ) {
192	$current_lang = qtranxf_getLanguage();
193	if ( $current_lang ) {
194	$query['lang'] .= $wpdb->prepare( " AND ( lang LIKE %s OR lang = '' )", $current_lang );
195	}
196	}
197
198	$sql = $wpdb->prepare("SELECT
199	distinct ID,
200	{$query['relevance']} as relevance
201	FROM
202	{$table_name}
203	WHERE
204	type = 'product'
205	{$query['source']}
206	{$query['search']}
207	{$query['stock']}
208	{$query['visibility']}
209	{$query['lang']}
210	GROUP BY ID
211	ORDER BY
212	relevance DESC
213	LIMIT 0, %d
214	", $results_num);
215
216	//SQL was processed through $wpdb->prepare() in many steps.
217	$posts_ids = $this->get_posts_ids( $sql ); //DB Call OK, No Caching OK
218
219	return $posts_ids;
220
221	}
222	/*
223	* Get array of included to search result posts ids
224	*/
225	private function get_posts_ids( $sql ) {
226
227	global $wpdb;
228
229	$posts_ids = array();
230
231	/*Passed SQL was processed using $wpdb->prepare() in line 198 and above/
232	// phpcs:ignore
233	$search_results = $wpdb->get_results( $sql ); //DB Call OK, No Caching OK
234
235	if ( !empty( $search_results ) && !is_wp_error( $search_results ) && is_array( $search_results ) ) {
236	foreach ( $search_results as $search_result ) {
237	$post_id = intval( $search_result->ID );
238	if ( ! in_array( $post_id, $posts_ids ) ) {
239	$posts_ids[] = $post_id;
240	}
241	}
242	}
243
244	unset( $search_results );
245
246	return $posts_ids;
247
248	}
249	/**
250	* @param $posts_ids
251	* @return array
252	*/
253	public function get_load_more_products($posts_ids){
254	return $this->get_products($posts_ids);
255	}
256	/*
257	* Get products info
258	*/
259	private function get_products( $posts_ids ) {
260	$product_per_page = get_option('qlcd_wp_chatbot_ppp') != '' ? get_option('qlcd_wp_chatbot_ppp') : 10;
261	$products_array = array();
262	$more_product_ids=array();
263	$products_num =count( $posts_ids );
264	if ( $products_num > 0 ) {
265	//if result products ids are more than per_page then keep remaing ids as load more option.
266	if($products_num >$product_per_page){
267	$more_product_ids=array_slice($posts_ids,$product_per_page);
268	$current_product_ids=array_slice($posts_ids,0,$product_per_page);
269	}else{
270	$current_product_ids=$posts_ids;
271	}
272	foreach ( $current_product_ids as $post_id ) {
273	$product = wc_get_product( $post_id );
274	$products_array[] = $product;
275	}
276	}
277	return array('products'=>$products_array,'more_ids'=>$more_product_ids,'total_products'=>$products_num);
278	}
279	}
280	endif;