ever-compare / includes / classes / Ajax.php

Ajax.php in Ever Compare – Products Compare Plugin for WooCommerce trunk, at includes/classes/Ajax.php

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1	<?php
2	namespace EverCompare;
3
4	defined( 'ABSPATH' ) \|\| exit;
5	/**
6	* Ajax handlers class
7	*/
8	class Ajax {
9
10	/**
11	* [$_instance]
12	* @var null
13	*/
14	private static $_instance = null;
15
16	/**
17	* [instance] Initializes a singleton instance
18	* @return [Ajax]
19	*/
20	public static function instance() {
21	if ( is_null( self::$_instance ) ) {
22	self::$_instance = new self();
23	}
24	return self::$_instance;
25	}
26
27	/**
28	* Initialize the class
29	*/
30	private function __construct() {
31
32	// Add Ajax Callback
33	add_action( 'wp_ajax_ever_compare_add_to_compare', [ $this, 'add_to_compare' ] );
34	add_action( 'wp_ajax_nopriv_ever_compare_add_to_compare', [ $this, 'add_to_compare' ] );
35
36	// Remove Ajax Callback
37	add_action( 'wp_ajax_ever_compare_remove_from_compare', [ $this, 'remove_from_compare' ] );
38	add_action( 'wp_ajax_nopriv_ever_compare_remove_from_compare', [ $this,'remove_from_compare' ] );
39
40	// Get Nonce endpoint (no nonce verification needed)
41	add_action( 'wp_ajax_ever_compare_get_nonce', [ $this, 'get_nonce' ] );
42	add_action( 'wp_ajax_nopriv_ever_compare_get_nonce', [ $this, 'get_nonce' ] );
43
44	// Get Table endpoint
45	add_action( 'wp_ajax_ever_compare_get_table', [ $this, 'get_table' ] );
46	add_action( 'wp_ajax_nopriv_ever_compare_get_table', [ $this, 'get_table' ] );
47
48	}
49
50	/**
51	* [add_to_compare] Product add ajax callback
52	*/
53	public function add_to_compare(){
54	check_ajax_referer('ever_compare_nonce', 'nonce');
55	if(!empty($_GET['id'])) {
56	$id = absint( $_GET['id'] );
57	\EverCompare\Frontend\Manage_Compare::instance()->add_to_compare( $id );
58	}
59	}
60
61	/**
62	* [remove_from_compare] Product delete ajax callback
63	* @return [void]
64	*/
65	public function remove_from_compare(){
66	check_ajax_referer('ever_compare_nonce', 'nonce');
67	if(!empty($_GET['id'])) {
68	$id = absint( $_GET['id'] );
69	\EverCompare\Frontend\Manage_Compare::instance()->remove_from_compare( $id );
70	}
71	}
72
73	/**
74	* [get_nonce] Return a fresh nonce for AJAX operations
75	* @return [void]
76	*/
77	public function get_nonce(){
78	wp_send_json( array(
79	'nonce' => wp_create_nonce( 'ever_compare_nonce' ),
80	) );
81	}
82
83	/**
84	* [get_table] Return compare table HTML for given product IDs
85	* @return [void]
86	*/
87	public function get_table(){
88	$ids = array();
89	if ( ! empty( $_GET['ids'] ) ) {
90	$raw_ids = sanitize_text_field( wp_unslash( $_GET['ids'] ) );
91	$ids = array_filter( array_map( 'absint', explode( ',', $raw_ids ) ) );
92	$ids = array_slice( $ids, 0, \EverCompare\Frontend\Manage_Compare::instance()->max_limit );
93	}
94
95	if ( empty( $ids ) ) {
96	wp_send_json( array(
97	'table' => '',
98	'count' => 0,
99	) );
100	}
101
102	$cookie_name = \EverCompare\Frontend\Manage_Compare::instance()->get_cookie_name();
103	$_COOKIE[ $cookie_name ] = wp_json_encode( $ids );
104
105	ob_start();
106	\EverCompare\Frontend\Manage_Compare::instance()->get_response_html();
107	$table_html = ob_get_clean();
108
109	wp_send_json( array(
110	'table' => $table_html,
111	'count' => count( $ids ),
112	'products' => $ids,
113	) );
114	}
115
116	}